Merge branch 'dev' into rabbitnew100mw

2026-05-12 13:58:36 -07:00 · 2023-07-21 23:58:03 +02:00
parent 8052dfd52c dd42b70c34
commit a39e547fc2
258 changed files with 10741 additions and 3542 deletions
--- a/applications/debug/unit_tests/nfc/nfc_test.c
+++ b/applications/debug/unit_tests/nfc/nfc_test.c
@@ -1,12 +1,10 @@
 #include <furi.h>
 #include <furi_hal.h>
-#include <stm32wbxx_ll_tim.h>
 #include <storage/storage.h>
 #include <lib/flipper_format/flipper_format.h>
 #include <lib/nfc/protocols/nfca.h>
 #include <lib/nfc/helpers/mf_classic_dict.h>
 #include <lib/digital_signal/digital_signal.h>
-#include <lib/pulse_reader/pulse_reader.h>
 #include <lib/nfc/nfc_device.h>
 #include <lib/nfc/helpers/nfc_generators.h>

@@ -224,153 +222,6 @@ MU_TEST(nfc_digital_signal_test) {
        "NFC long digital signal test failed\r\n");
 }

-static bool nfc_test_pulse_reader_toggle(
-    uint32_t usec_low,
-    uint32_t usec_high,
-    uint32_t period_count,
-    uint32_t tolerance) {
-    furi_assert(nfc_test);
-
-    bool success = false;
-    uint32_t pulses = 0;
-    const GpioPin* gpio_in = &gpio_ext_pa6;
-    const GpioPin* gpio_out = &gpio_ext_pa7;
-    PulseReader* reader = NULL;
-
-    do {
-        reader = pulse_reader_alloc(gpio_in, 512);
-
-        if(!reader) {
-            FURI_LOG_E(TAG, "failed to allocate pulse reader");
-            break;
-        }
-
-        /* use TIM1 to create a specific number of pulses with defined duty cycle 
-           but first set the IO to high, so the low/high pulse can get detected */
-        furi_hal_gpio_init(gpio_out, GpioModeOutputPushPull, GpioPullNo, GpioSpeedVeryHigh);
-        furi_hal_gpio_write(gpio_out, true);
-
-        LL_TIM_DeInit(TIM1);
-
-        LL_TIM_SetCounterMode(TIM1, LL_TIM_COUNTERMODE_UP);
-        LL_TIM_SetRepetitionCounter(TIM1, 0);
-        LL_TIM_SetClockDivision(TIM1, LL_TIM_CLOCKDIVISION_DIV1);
-        LL_TIM_SetClockSource(TIM1, LL_TIM_CLOCKSOURCE_INTERNAL);
-        LL_TIM_DisableARRPreload(TIM1);
-
-        LL_TIM_OC_DisablePreload(TIM1, LL_TIM_CHANNEL_CH1);
-        LL_TIM_OC_SetMode(TIM1, LL_TIM_CHANNEL_CH1, LL_TIM_OCMODE_PWM2);
-        LL_TIM_OC_SetPolarity(TIM1, LL_TIM_CHANNEL_CH1N, LL_TIM_OCPOLARITY_HIGH);
-        LL_TIM_OC_DisableFast(TIM1, LL_TIM_CHANNEL_CH1);
-        LL_TIM_CC_EnableChannel(TIM1, LL_TIM_CHANNEL_CH1N);
-
-        LL_TIM_EnableAllOutputs(TIM1);
-
-        /* now calculate the TIM1 period and compare values */
-        uint32_t freq_div = 64 * (usec_low + usec_high);
-        uint32_t prescaler = freq_div / 0x10000LU;
-        uint32_t period = freq_div / (prescaler + 1);
-        uint32_t compare = 64 * usec_low / (prescaler + 1);
-
-        LL_TIM_SetPrescaler(TIM1, prescaler);
-        LL_TIM_SetAutoReload(TIM1, period - 1);
-        LL_TIM_SetCounter(TIM1, period - 1);
-        LL_TIM_OC_SetCompareCH1(TIM1, compare);
-
-        /* timer is ready to launch, now start the pulse reader */
-        pulse_reader_set_timebase(reader, PulseReaderUnitMicrosecond);
-        pulse_reader_start(reader);
-
-        /* and quickly enable and switch over the GPIO to the generated signal */
-        LL_TIM_EnableCounter(TIM1);
-        furi_hal_gpio_init_ex(
-            gpio_out, GpioModeAltFunctionPushPull, GpioPullNo, GpioSpeedVeryHigh, GpioAltFn1TIM1);
-
-        /* now it's time to parse the pulses received by the reader */
-        uint32_t timer_pulses = period_count;
-        uint32_t prev_cnt = 0;
-
-        while(timer_pulses > 0) {
-            /* whenever the counter gets reset, we went through a full period */
-            uint32_t cur_cnt = LL_TIM_GetCounter(TIM1);
-            if(cur_cnt < prev_cnt) {
-                timer_pulses--;
-            }
-            prev_cnt = cur_cnt;
-        }
-        /* quickly halt the counter to keep a static signal */
-        LL_TIM_DisableCounter(TIM1);
-
-        do {
-            /* as all edges were sampled asynchronously, the timeout can be zero */
-            uint32_t length = pulse_reader_receive(reader, 0);
-
-            /* in the last pulse, we expect a "no edge" return value. if seen that, test succeeded. */
-            if(pulses > period_count * 2) {
-                if(length != PULSE_READER_NO_EDGE) {
-                    FURI_LOG_E(
-                        TAG,
-                        "last pulse expected to be PULSE_READER_NO_EDGE, but was %lu.",
-                        length);
-                    break;
-                }
-                success = true;
-                break;
-            }
-
-            /* else we shall never see "no edge" or "lost edge" */
-            if(length == PULSE_READER_NO_EDGE) {
-                FURI_LOG_E(TAG, "%lu. pulse not expected to be PULSE_READER_NO_EDGE", pulses);
-                break;
-            }
-            if(length == PULSE_READER_LOST_EDGE) {
-                FURI_LOG_E(TAG, "%lu. pulse not expected to be PULSE_READER_LOST_EDGE", pulses);
-                break;
-            }
-
-            if(pulses > 0) {
-                /* throw away the first pulse, which is the 1->0 from the first start and will be irrelevant for our test */
-                bool phase = ((pulses - 1) % 2) == 1;
-                uint32_t expected = phase ? usec_high : usec_low;
-                uint32_t deviation = abs((int32_t)length - (int32_t)expected);
-
-                if(deviation > tolerance) {
-                    FURI_LOG_E(
-                        TAG,
-                        "%lu. pulse expected %lu, but pulse was %lu.",
-                        pulses,
-                        expected,
-                        length);
-                    break;
-                }
-            }
-            pulses++;
-        } while(true);
-    } while(false);
-
-    if(reader != NULL) {
-        pulse_reader_stop(reader);
-        pulse_reader_free(reader);
-    }
-
-    LL_TIM_DeInit(TIM1);
-    furi_hal_gpio_init_simple(gpio_in, GpioModeAnalog);
-    furi_hal_gpio_init_simple(gpio_out, GpioModeAnalog);
-
-    return success;
-}
-
-MU_TEST(nfc_pulse_reader_test) {
-    mu_assert(nfc_test_pulse_reader_toggle(1500, 2500, 50, 10), "1 ms signal failed\r\n");
-    mu_assert(nfc_test_pulse_reader_toggle(10000, 10000, 10, 10), "10 ms signal failed\r\n");
-    mu_assert(nfc_test_pulse_reader_toggle(100000, 100000, 5, 50), "100 ms signal failed\r\n");
-    mu_assert(nfc_test_pulse_reader_toggle(100, 900, 50, 10), "1 ms asymmetric signal failed\r\n");
-    mu_assert(
-        nfc_test_pulse_reader_toggle(3333, 6666, 10, 10), "10 ms asymmetric signal failed\r\n");
-    mu_assert(
-        nfc_test_pulse_reader_toggle(25000, 75000, 5, 10), "100 ms asymmetric signal failed\r\n");
-}
-
 MU_TEST(mf_classic_dict_test) {
    MfClassicDict* instance = NULL;
    uint64_t key = 0;
@@ -705,7 +556,6 @@ MU_TEST(mf_classic_4k_7b_file_test) {
 MU_TEST_SUITE(nfc) {
    nfc_test_alloc();

-    MU_RUN_TEST(nfc_pulse_reader_test);
    MU_RUN_TEST(nfca_file_test);
    MU_RUN_TEST(mf_mini_file_test);
    MU_RUN_TEST(mf_classic_1k_4b_file_test);
--- a/applications/drivers/subghz/application.fam
+++ b/applications/drivers/subghz/application.fam
@@ -4,5 +4,6 @@ App(
    targets=["f7"],
    entry_point="subghz_device_cc1101_ext_ep",
    requires=["subghz"],
+    sdk_headers=["cc1101_ext/cc1101_ext_interconnect.h"],
    fap_libs=["hwdrivers"],
 )
--- a/applications/examples/example_thermo/README.md
+++ b/applications/examples/example_thermo/README.md
@@ -18,7 +18,7 @@ Before launching the application, connect the sensor to Flipper's external GPIO
 In order to launch this demo, follow the steps below:
 1. Make sure your Flipper has an SD card installed.
 2. Connect your Flipper to the computer via a USB cable.
-3. Run `./fbt launch_app APPSRC=example_thermo` in your terminal emulator of choice.
+3. Run `./fbt launch APPSRC=example_thermo` in your terminal emulator of choice.

 ## Changing the data pin
 It is possible to use other GPIO pin as a 1-Wire data pin. In order to change it, set the `THERMO_GPIO_PIN` macro to any of the options listed below:
--- a/applications/external/asteroids/app.c
+++ b/applications/external/asteroids/app.c
@@ -28,9 +28,7 @@
 #define MAXPOWERUPS 3 /* Max powerups allowed on screen */
 #define POWERUPSTTL 400 /* Max powerup time to live, in ticks. */
 #define SHIP_HIT_ANIMATION_LEN 15
-// Tick runs in thread, cant use APP_DATA_PATH()
-#define SAVING_DIRECTORY EXT_PATH("apps_data/asteroids")
-#define SAVING_FILENAME SAVING_DIRECTORY "/game_asteroids.save"
+#define SAVING_FILENAME APP_DATA_PATH("game_asteroids.save")
 #ifndef PI
 #define PI 3.14159265358979f
 #endif
@@ -1147,7 +1145,6 @@ void game_tick(void* ctx) {

 bool load_game(AsteroidsApp* app) {
    Storage* storage = furi_record_open(RECORD_STORAGE);
-    storage_common_mkdir(storage, SAVING_DIRECTORY);
    storage_common_migrate(storage, EXT_PATH("apps/Games/game_asteroids.save"), SAVING_FILENAME);

    File* file = storage_file_alloc(storage);
--- a/applications/external/barcode_gen/application.fam
+++ b/applications/external/barcode_gen/application.fam
@@ -8,9 +8,9 @@ App(
    fap_category="Tools",
    fap_icon="images/barcode_10.png",
    fap_icon_assets="images",
-    fap_icon_assets_symbol="barcode_app",
+    fap_file_assets="barcode_encoding_files",
    fap_author="@Kingal1337",
    fap_weburl="https://github.com/Kingal1337/flipper-barcode-generator",
-    fap_version="1.0",
+    fap_version="1.1",
    fap_description="App allows you to display various barcodes on flipper screen",
 )
--- a/applications/external/barcode_gen/barcode_app.h
+++ b/applications/external/barcode_gen/barcode_app.h
@@ -23,20 +23,17 @@
 #define BARCODE_HEIGHT 50
 #define BARCODE_Y_START 3

-//the folder where the encodings are located
-#define BARCODE_DATA_FILE_DIR_PATH EXT_PATH("apps_data/barcode_data")
-
 //the folder where the codabar encoding table is located
-#define CODABAR_DICT_FILE_PATH BARCODE_DATA_FILE_DIR_PATH "/codabar_encodings.txt"
+#define CODABAR_DICT_FILE_PATH APP_ASSETS_PATH("codabar_encodings.txt")

 //the folder where the code 39 encoding table is located
-#define CODE39_DICT_FILE_PATH BARCODE_DATA_FILE_DIR_PATH "/code39_encodings.txt"
+#define CODE39_DICT_FILE_PATH APP_ASSETS_PATH("code39_encodings.txt")

 //the folder where the code 128 encoding table is located
-#define CODE128_DICT_FILE_PATH BARCODE_DATA_FILE_DIR_PATH "/code128_encodings.txt"
+#define CODE128_DICT_FILE_PATH APP_ASSETS_PATH("code128_encodings.txt")

 //the folder where the code 128 C encoding table is located
-#define CODE128C_DICT_FILE_PATH BARCODE_DATA_FILE_DIR_PATH "/code128c_encodings.txt"
+#define CODE128C_DICT_FILE_PATH APP_ASSETS_PATH("code128c_encodings.txt")

 //the folder where the user stores their barcodes
 #define DEFAULT_USER_BARCODES EXT_PATH("apps_data/barcodes")
--- a/applications/external/barcode_gen/barcode_encoding_files/codabar_encodings.txt
+++ b/applications/external/barcode_gen/barcode_encoding_files/codabar_encodings.txt
@@ -0,0 +1,22 @@
+# alternates between bars and spaces, always begins with bar
+# 0 for narrow, 1 for wide
+0: 0000011
+1: 0000110
+2: 0001001
+3: 1100000
+4: 0010010
+5: 1000010
+6: 0100001
+7: 0100100
+8: 0110000
+9: 1001000
+-: 0001100
+$: 0011000
+:: 1000101
+/: 1010001
+.: 1010100
+: 0010101
+A: 0011010
+B: 0101001
+C: 0001011
+D: 0001110
--- a/applications/external/barcode_gen/barcode_encoding_files/code128_encodings.txt
+++ b/applications/external/barcode_gen/barcode_encoding_files/code128_encodings.txt
@@ -0,0 +1,202 @@
+ : 00
+!: 01
+": 02
+#: 03
+$: 04
+%: 05
+&: 06
+': 07
+(: 08
+): 09
+*: 10
+: 11
+,: 12
+-: 13
+.: 14
+/: 15
+0: 16
+1: 17
+2: 18
+3: 19
+4: 20
+5: 21
+6: 22
+7: 23
+8: 24
+9: 25
+:: 26
+;: 27
+<: 28
+=: 29
+>: 30
+?: 31
+@: 32
+A: 33
+B: 34
+C: 35
+D: 36
+E: 37
+F: 38
+G: 39
+H: 40
+I: 41
+J: 42
+K: 43
+L: 44
+M: 45
+N: 46
+O: 47
+P: 48
+Q: 49
+R: 50
+S: 51
+T: 52
+U: 53
+V: 54
+W: 55
+X: 56
+Y: 57
+Z: 58
+[: 59
+\: 60
+]: 61
+^: 62
+_: 63
+`: 64
+a: 65
+b: 66
+c: 67
+d: 68
+e: 69
+f: 70
+g: 71
+h: 72
+i: 73
+j: 74
+k: 75
+l: 76
+m: 77
+n: 78
+o: 79
+p: 80
+q: 81
+r: 82
+s: 83
+t: 84
+u: 85
+v: 86
+w: 87
+x: 88
+y: 89
+z: 90
+{: 91
+|: 92
+}: 93
+~: 94
+
+00: 11011001100
+01: 11001101100
+02: 11001100110
+03: 10010011000
+04: 10010001100
+05: 10001001100
+06: 10011001000
+07: 10011000100
+08: 10001100100
+09: 11001001000
+10: 11001000100
+11: 11000100100
+12: 10110011100
+13: 10011011100
+14: 10011001110
+15: 10111001100
+16: 10011101100
+17: 10011100110
+18: 11001110010
+19: 11001011100
+20: 11001001110
+21: 11011100100
+22: 11001110100
+23: 11101101110
+24: 11101001100
+25: 11100101100
+26: 11100100110
+27: 11101100100
+28: 11100110100
+29: 11100110010
+30: 11011011000
+31: 11011000110
+32: 11000110110
+33: 10100011000
+34: 10001011000
+35: 10001000110
+36: 10110001000
+37: 10001101000
+38: 10001100010
+39: 11010001000
+40: 11000101000
+41: 11000100010
+42: 10110111000
+43: 10110001110
+44: 10001101110
+45: 10111011000
+46: 10111000110
+47: 10001110110
+48: 11101110110
+49: 11010001110
+50: 11000101110
+51: 11011101000
+52: 11011100010
+53: 11011101110
+54: 11101011000
+55: 11101000110
+56: 11100010110
+57: 11101101000
+58: 11101100010
+59: 11100011010
+60: 11101111010
+61: 11001000010
+62: 11110001010
+63: 10100110000
+64: 10100001100
+65: 10010110000
+66: 10010000110
+67: 10000101100
+68: 10000100110
+69: 10110010000
+70: 10110000100
+71: 10011010000
+72: 10011000010
+73: 10000110100
+74: 10000110010
+75: 11000010010
+76: 11001010000
+77: 11110111010
+78: 11000010100
+79: 10001111010
+80: 10100111100
+81: 10010111100
+82: 10010011110
+83: 10111100100
+84: 10011110100
+85: 10011110010
+86: 11110100100
+87: 11110010100
+88: 11110010010
+89: 11011011110
+90: 11011110110
+91: 11110110110
+92: 10101111000
+93: 10100011110
+94: 10001011110
+95: 10111101000
+96: 10111100010
+97: 11110101000
+98: 11110100010
+99: 10111011110
+100: 10111101110
+101: 11101011110
+102: 11110101110
+103: 11010000100
+104: 11010010000
+105: 11010011100
--- a/applications/external/barcode_gen/barcode_encoding_files/code128c_encodings.txt
+++ b/applications/external/barcode_gen/barcode_encoding_files/code128c_encodings.txt
@@ -0,0 +1,106 @@
+00: 11011001100
+01: 11001101100
+02: 11001100110
+03: 10010011000
+04: 10010001100
+05: 10001001100
+06: 10011001000
+07: 10011000100
+08: 10001100100
+09: 11001001000
+10: 11001000100
+11: 11000100100
+12: 10110011100
+13: 10011011100
+14: 10011001110
+15: 10111001100
+16: 10011101100
+17: 10011100110
+18: 11001110010
+19: 11001011100
+20: 11001001110
+21: 11011100100
+22: 11001110100
+23: 11101101110
+24: 11101001100
+25: 11100101100
+26: 11100100110
+27: 11101100100
+28: 11100110100
+29: 11100110010
+30: 11011011000
+31: 11011000110
+32: 11000110110
+33: 10100011000
+34: 10001011000
+35: 10001000110
+36: 10110001000
+37: 10001101000
+38: 10001100010
+39: 11010001000
+40: 11000101000
+41: 11000100010
+42: 10110111000
+43: 10110001110
+44: 10001101110
+45: 10111011000
+46: 10111000110
+47: 10001110110
+48: 11101110110
+49: 11010001110
+50: 11000101110
+51: 11011101000
+52: 11011100010
+53: 11011101110
+54: 11101011000
+55: 11101000110
+56: 11100010110
+57: 11101101000
+58: 11101100010
+59: 11100011010
+60: 11101111010
+61: 11001000010
+62: 11110001010
+63: 10100110000
+64: 10100001100
+65: 10010110000
+66: 10010000110
+67: 10000101100
+68: 10000100110
+69: 10110010000
+70: 10110000100
+71: 10011010000
+72: 10011000010
+73: 10000110100
+74: 10000110010
+75: 11000010010
+76: 11001010000
+77: 11110111010
+78: 11000010100
+79: 10001111010
+80: 10100111100
+81: 10010111100
+82: 10010011110
+83: 10111100100
+84: 10011110100
+85: 10011110010
+86: 11110100100
+87: 11110010100
+88: 11110010010
+89: 11011011110
+90: 11011110110
+91: 11110110110
+92: 10101111000
+93: 10100011110
+94: 10001011110
+95: 10111101000
+96: 10111100010
+97: 11110101000
+98: 11110100010
+99: 10111011110
+100: 10111101110
+101: 11101011110
+102: 11110101110
+103: 11010000100
+104: 11010010000
+105: 11010011100
--- a/applications/external/barcode_gen/barcode_encoding_files/code39_encodings.txt
+++ b/applications/external/barcode_gen/barcode_encoding_files/code39_encodings.txt
@@ -0,0 +1,44 @@
+0: 000110100
+1: 100100001
+2: 001100001
+3: 101100000
+4: 000110001
+5: 100110000
+6: 001110000
+7: 000100101
+8: 100100100
+9: 001100100
+A: 100001001
+B: 001001001
+C: 101001000
+D: 000011001
+E: 100011000
+F: 001011000
+G: 000001101
+H: 100001100
+I: 001001100
+J: 000011100
+K: 100000011
+L: 001000011
+M: 101000010
+N: 000010011
+O: 100010010
+P: 001010010
+Q: 000000111
+R: 100000110
+S: 001000110
+T: 000010110
+U: 110000001
+V: 011000001
+W: 111000000
+X: 010010001
+Y: 110010000
+Z: 011010000
+-: 010000101
+.: 110000100
+ : 011000100
+*: 010010100
+$: 010101000
+/: 010100010
+: 010001010
+%: 000101010
--- a/applications/external/esp_flasher/application.fam
+++ b/applications/external/esp_flasher/application.fam
@@ -0,0 +1,29 @@
+App(
+    appid="esp_flasher",
+    name="[GPIO] ESP Flasher",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="esp_flasher_app",
+    requires=["gui"],
+    stack_size=4 * 1024,
+    order=90,
+    fap_icon="wifi_10px.png",
+    fap_category="GPIO",
+    fap_private_libs=[
+        Lib(
+            name="esp-serial-flasher",
+            fap_include_paths=["include"],
+            sources=[
+                "src/esp_loader.c",
+                "src/esp_targets.c",
+                "src/md5_hash.c",
+                "src/protocol_common.c",
+                "src/protocol_uart.c",
+                "src/slip.c",
+            ],
+            cincludes=["lib/esp-serial-flasher/private_include"],
+            cdefines=["SERIAL_FLASHER_INTERFACE_UART=1", "MD5_ENABLED=1"],
+        ),
+    ],
+    cdefines=["SERIAL_FLASHER_INTERFACE_UART=1"],
+    fap_icon_assets="assets",
+)
--- a/applications/external/esp_flasher/assets/DolphinCommon_56x48.png
+++ b/applications/external/esp_flasher/assets/DolphinCommon_56x48.png
--- a/applications/external/esp_flasher/assets/KeyBackspaceSelected_16x9.png
+++ b/applications/external/esp_flasher/assets/KeyBackspaceSelected_16x9.png
--- a/applications/external/esp_flasher/assets/KeyBackspace_16x9.png
+++ b/applications/external/esp_flasher/assets/KeyBackspace_16x9.png
--- a/applications/external/esp_flasher/assets/KeyKeyboardSelected_10x11.png
+++ b/applications/external/esp_flasher/assets/KeyKeyboardSelected_10x11.png
--- a/applications/external/esp_flasher/assets/KeyKeyboard_10x11.png
+++ b/applications/external/esp_flasher/assets/KeyKeyboard_10x11.png
--- a/applications/external/esp_flasher/assets/KeySaveSelected_24x11.png
+++ b/applications/external/esp_flasher/assets/KeySaveSelected_24x11.png
--- a/applications/external/esp_flasher/assets/KeySave_24x11.png
+++ b/applications/external/esp_flasher/assets/KeySave_24x11.png
--- a/applications/external/esp_flasher/assets/Text_10x10.png
+++ b/applications/external/esp_flasher/assets/Text_10x10.png
--- a/applications/external/esp_flasher/assets/WarningDolphin_45x42.png
+++ b/applications/external/esp_flasher/assets/WarningDolphin_45x42.png
--- a/applications/external/esp_flasher/esp_flasher_app.c
+++ b/applications/external/esp_flasher/esp_flasher_app.c
@@ -0,0 +1,135 @@
+#include "esp_flasher_app_i.h"
+
+#include <furi.h>
+#include <furi_hal.h>
+
+static bool esp_flasher_app_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    EspFlasherApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool esp_flasher_app_back_event_callback(void* context) {
+    furi_assert(context);
+    EspFlasherApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void esp_flasher_app_tick_event_callback(void* context) {
+    furi_assert(context);
+    EspFlasherApp* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+EspFlasherApp* esp_flasher_app_alloc() {
+    EspFlasherApp* app = malloc(sizeof(EspFlasherApp));
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->dialogs = furi_record_open(RECORD_DIALOGS);
+    app->storage = furi_record_open(RECORD_STORAGE);
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    app->scene_manager = scene_manager_alloc(&esp_flasher_scene_handlers, app);
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, esp_flasher_app_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, esp_flasher_app_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, esp_flasher_app_tick_event_callback, 100);
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    app->var_item_list = variable_item_list_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        EspFlasherAppViewVarItemList,
+        variable_item_list_get_view(app->var_item_list));
+
+    app->text_box = text_box_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, EspFlasherAppViewConsoleOutput, text_box_get_view(app->text_box));
+    app->text_box_store = furi_string_alloc();
+    furi_string_reserve(app->text_box_store, ESP_FLASHER_TEXT_BOX_STORE_SIZE);
+
+    app->widget = widget_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, EspFlasherAppViewWidget, widget_get_view(app->widget));
+
+    // Submenu
+    app->submenu = submenu_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, EspFlasherAppViewSubmenu, submenu_get_view(app->submenu));
+
+    app->flash_worker_busy = false;
+
+    scene_manager_next_scene(app->scene_manager, EspFlasherSceneStart);
+
+    return app;
+}
+
+void esp_flasher_make_app_folder(EspFlasherApp* app) {
+    furi_assert(app);
+
+    if(!storage_simply_mkdir(app->storage, ESP_APP_FOLDER)) {
+        dialog_message_show_storage_error(app->dialogs, "Cannot create\napp folder");
+    }
+}
+
+void esp_flasher_app_free(EspFlasherApp* app) {
+    furi_assert(app);
+
+    // Views
+    view_dispatcher_remove_view(app->view_dispatcher, EspFlasherAppViewVarItemList);
+    view_dispatcher_remove_view(app->view_dispatcher, EspFlasherAppViewConsoleOutput);
+    view_dispatcher_remove_view(app->view_dispatcher, EspFlasherAppViewWidget);
+    view_dispatcher_remove_view(app->view_dispatcher, EspFlasherAppViewSubmenu);
+
+    widget_free(app->widget);
+    text_box_free(app->text_box);
+    furi_string_free(app->text_box_store);
+    submenu_free(app->submenu);
+    variable_item_list_free(app->var_item_list);
+
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    esp_flasher_uart_free(app->uart);
+
+    // Close records
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_STORAGE);
+    furi_record_close(RECORD_DIALOGS);
+
+    free(app);
+}
+
+int32_t esp_flasher_app(void* p) {
+    UNUSED(p);
+
+    uint8_t attempts = 0;
+    while(!furi_hal_power_is_otg_enabled() && attempts++ < 5) {
+        furi_hal_power_enable_otg();
+        furi_delay_ms(10);
+    }
+    furi_delay_ms(200);
+
+    EspFlasherApp* esp_flasher_app = esp_flasher_app_alloc();
+
+    esp_flasher_make_app_folder(esp_flasher_app);
+
+    esp_flasher_app->uart = esp_flasher_usart_init(esp_flasher_app);
+
+    view_dispatcher_run(esp_flasher_app->view_dispatcher);
+
+    esp_flasher_app_free(esp_flasher_app);
+
+    if(furi_hal_power_is_otg_enabled()) {
+        furi_hal_power_disable_otg();
+    }
+
+    return 0;
+}
--- a/applications/external/esp_flasher/esp_flasher_app.h
+++ b/applications/external/esp_flasher/esp_flasher_app.h
@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ESP_FLASHER_APP_VERSION "v1.0"
+
+typedef struct EspFlasherApp EspFlasherApp;
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/esp_flasher_app_i.h
+++ b/applications/external/esp_flasher/esp_flasher_app_i.h
@@ -0,0 +1,75 @@
+//** Includes sniffbt and sniffskim for compatible ESP32-WROOM hardware.
+// esp_flasher_scene_start.c also changed **//
+#pragma once
+
+#include "esp_flasher_app.h"
+#include "scenes/esp_flasher_scene.h"
+#include "esp_flasher_custom_event.h"
+#include "esp_flasher_uart.h"
+#include "file/sequential_file.h"
+
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <gui/modules/text_box.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/variable_item_list.h>
+#include <gui/modules/widget.h>
+
+#include <esp_flasher_icons.h>
+#include <storage/storage.h>
+#include <lib/toolbox/path.h>
+#include <dialogs/dialogs.h>
+
+#define ESP_FLASHER_TEXT_BOX_STORE_SIZE (4096)
+
+#define ESP_APP_FOLDER_USER "apps_data/esp_flasher"
+#define ESP_APP_FOLDER EXT_PATH(ESP_APP_FOLDER_USER)
+
+typedef enum SelectedFlashOptions {
+    SelectedFlashS3Mode,
+    SelectedFlashBoot,
+    SelectedFlashPart,
+    SelectedFlashNvs,
+    SelectedFlashBootApp0,
+    SelectedFlashApp,
+    SelectedFlashCustom,
+    NUM_FLASH_OPTIONS
+} SelectedFlashOptions;
+
+struct EspFlasherApp {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+
+    FuriString* text_box_store;
+    size_t text_box_store_strlen;
+    TextBox* text_box;
+    Storage* storage;
+    DialogsApp* dialogs;
+
+    VariableItemList* var_item_list;
+    Widget* widget;
+    Submenu* submenu;
+
+    EspFlasherUart* uart;
+
+    bool selected_flash_options[NUM_FLASH_OPTIONS];
+    int num_selected_flash_options;
+    char bin_file_path_boot[100];
+    char bin_file_path_part[100];
+    char bin_file_path_nvs[100];
+    char bin_file_path_boot_app0[100];
+    char bin_file_path_app[100];
+    char bin_file_path_custom[100];
+    FuriThread* flash_worker;
+    bool flash_worker_busy;
+};
+
+typedef enum {
+    EspFlasherAppViewVarItemList,
+    EspFlasherAppViewConsoleOutput,
+    EspFlasherAppViewTextInput,
+    EspFlasherAppViewWidget,
+    EspFlasherAppViewSubmenu,
+} EspFlasherAppView;
--- a/applications/external/esp_flasher/esp_flasher_custom_event.h
+++ b/applications/external/esp_flasher/esp_flasher_custom_event.h
@@ -0,0 +1,9 @@
+#pragma once
+
+typedef enum {
+    EspFlasherEventRefreshConsoleOutput = 0,
+    EspFlasherEventStartConsole,
+    EspFlasherEventStartKeyboard,
+    EspFlasherEventStartFlasher,
+    EspFlasherEventRefreshSubmenu
+} EspFlasherCustomEvent;
--- a/applications/external/esp_flasher/esp_flasher_uart.c
+++ b/applications/external/esp_flasher/esp_flasher_uart.c
@@ -0,0 +1,106 @@
+#include "esp_flasher_app_i.h"
+#include "esp_flasher_uart.h"
+
+#define UART_CH (FuriHalUartIdUSART1)
+#define BAUDRATE (115200)
+
+struct EspFlasherUart {
+    EspFlasherApp* app;
+    FuriHalUartId channel;
+    FuriThread* rx_thread;
+    FuriStreamBuffer* rx_stream;
+    uint8_t rx_buf[RX_BUF_SIZE + 1];
+    void (*handle_rx_data_cb)(uint8_t* buf, size_t len, void* context);
+};
+
+typedef enum {
+    WorkerEvtStop = (1 << 0),
+    WorkerEvtRxDone = (1 << 1),
+} WorkerEvtFlags;
+
+void esp_flasher_uart_set_handle_rx_data_cb(
+    EspFlasherUart* uart,
+    void (*handle_rx_data_cb)(uint8_t* buf, size_t len, void* context)) {
+    furi_assert(uart);
+    uart->handle_rx_data_cb = handle_rx_data_cb;
+}
+
+#define WORKER_ALL_RX_EVENTS (WorkerEvtStop | WorkerEvtRxDone)
+
+void esp_flasher_uart_on_irq_cb(UartIrqEvent ev, uint8_t data, void* context) {
+    EspFlasherUart* uart = (EspFlasherUart*)context;
+
+    if(ev == UartIrqEventRXNE) {
+        furi_stream_buffer_send(uart->rx_stream, &data, 1, 0);
+        furi_thread_flags_set(furi_thread_get_id(uart->rx_thread), WorkerEvtRxDone);
+    }
+}
+
+static int32_t uart_worker(void* context) {
+    EspFlasherUart* uart = (void*)context;
+
+    while(1) {
+        uint32_t events =
+            furi_thread_flags_wait(WORKER_ALL_RX_EVENTS, FuriFlagWaitAny, FuriWaitForever);
+        furi_check((events & FuriFlagError) == 0);
+        if(events & WorkerEvtStop) break;
+        if(events & WorkerEvtRxDone) {
+            size_t len = furi_stream_buffer_receive(uart->rx_stream, uart->rx_buf, RX_BUF_SIZE, 0);
+            if(len > 0) {
+                if(uart->handle_rx_data_cb) uart->handle_rx_data_cb(uart->rx_buf, len, uart->app);
+            }
+        }
+    }
+
+    furi_stream_buffer_free(uart->rx_stream);
+
+    return 0;
+}
+
+void esp_flasher_uart_tx(uint8_t* data, size_t len) {
+    furi_hal_uart_tx(UART_CH, data, len);
+}
+
+EspFlasherUart*
+    esp_flasher_uart_init(EspFlasherApp* app, FuriHalUartId channel, const char* thread_name) {
+    EspFlasherUart* uart = malloc(sizeof(EspFlasherUart));
+
+    uart->app = app;
+    uart->channel = channel;
+    uart->rx_stream = furi_stream_buffer_alloc(RX_BUF_SIZE, 1);
+    uart->rx_thread = furi_thread_alloc();
+    furi_thread_set_name(uart->rx_thread, thread_name);
+    furi_thread_set_stack_size(uart->rx_thread, 1024);
+    furi_thread_set_context(uart->rx_thread, uart);
+    furi_thread_set_callback(uart->rx_thread, uart_worker);
+    furi_thread_start(uart->rx_thread);
+    if(channel == FuriHalUartIdUSART1) {
+        furi_hal_console_disable();
+    } else if(channel == FuriHalUartIdLPUART1) {
+        furi_hal_uart_init(channel, BAUDRATE);
+    }
+    furi_hal_uart_set_br(channel, BAUDRATE);
+    furi_hal_uart_set_irq_cb(channel, esp_flasher_uart_on_irq_cb, uart);
+
+    return uart;
+}
+
+EspFlasherUart* esp_flasher_usart_init(EspFlasherApp* app) {
+    return esp_flasher_uart_init(app, UART_CH, "EspFlasherUartRxThread");
+}
+
+void esp_flasher_uart_free(EspFlasherUart* uart) {
+    furi_assert(uart);
+
+    furi_thread_flags_set(furi_thread_get_id(uart->rx_thread), WorkerEvtStop);
+    furi_thread_join(uart->rx_thread);
+    furi_thread_free(uart->rx_thread);
+
+    furi_hal_uart_set_irq_cb(uart->channel, NULL, NULL);
+    if(uart->channel == FuriHalUartIdLPUART1) {
+        furi_hal_uart_deinit(uart->channel);
+    }
+    furi_hal_console_enable();
+
+    free(uart);
+}
--- a/applications/external/esp_flasher/esp_flasher_uart.h
+++ b/applications/external/esp_flasher/esp_flasher_uart.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "furi_hal.h"
+
+#define RX_BUF_SIZE (2048)
+
+typedef struct EspFlasherUart EspFlasherUart;
+
+void esp_flasher_uart_set_handle_rx_data_cb(
+    EspFlasherUart* uart,
+    void (*handle_rx_data_cb)(uint8_t* buf, size_t len, void* context));
+void esp_flasher_uart_tx(uint8_t* data, size_t len);
+EspFlasherUart* esp_flasher_usart_init(EspFlasherApp* app);
+void esp_flasher_uart_free(EspFlasherUart* uart);
--- a/applications/external/esp_flasher/esp_flasher_worker.c
+++ b/applications/external/esp_flasher/esp_flasher_worker.c
@@ -0,0 +1,255 @@
+#include "esp_flasher_worker.h"
+
+FuriStreamBuffer* flash_rx_stream; // TODO make safe
+EspFlasherApp* global_app; // TODO make safe
+FuriTimer* timer; // TODO make
+
+static uint32_t _remaining_time = 0;
+static void _timer_callback(void* context) {
+    UNUSED(context);
+    if(_remaining_time > 0) {
+        _remaining_time--;
+    }
+}
+
+static esp_loader_error_t _flash_file(EspFlasherApp* app, char* filepath, uint32_t addr) {
+    // TODO cleanup
+    esp_loader_error_t err;
+    static uint8_t payload[1024];
+    File* bin_file = storage_file_alloc(app->storage);
+
+    char user_msg[256];
+
+    // open file
+    if(!storage_file_open(bin_file, filepath, FSAM_READ, FSOM_OPEN_EXISTING)) {
+        storage_file_close(bin_file);
+        storage_file_free(bin_file);
+        dialog_message_show_storage_error(app->dialogs, "Cannot open file");
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    uint64_t size = storage_file_size(bin_file);
+
+    loader_port_debug_print("Erasing flash...this may take a while\n");
+    err = esp_loader_flash_start(addr, size, sizeof(payload));
+    if(err != ESP_LOADER_SUCCESS) {
+        storage_file_close(bin_file);
+        storage_file_free(bin_file);
+        snprintf(user_msg, sizeof(user_msg), "Erasing flash failed with error %d\n", err);
+        loader_port_debug_print(user_msg);
+        return err;
+    }
+
+    loader_port_debug_print("Start programming\n");
+    uint64_t last_updated = size;
+    while(size > 0) {
+        if((last_updated - size) > 50000) {
+            // inform user every 50k bytes
+            // TODO: draw a progress bar next update
+            snprintf(user_msg, sizeof(user_msg), "%llu bytes left.\n", size);
+            loader_port_debug_print(user_msg);
+            last_updated = size;
+        }
+        size_t to_read = MIN(size, sizeof(payload));
+        uint16_t num_bytes = storage_file_read(bin_file, payload, to_read);
+        err = esp_loader_flash_write(payload, num_bytes);
+        if(err != ESP_LOADER_SUCCESS) {
+            snprintf(user_msg, sizeof(user_msg), "Packet could not be written! Error: %u\n", err);
+            storage_file_close(bin_file);
+            storage_file_free(bin_file);
+            loader_port_debug_print(user_msg);
+            return err;
+        }
+
+        size -= num_bytes;
+    }
+
+    loader_port_debug_print("Finished programming\n");
+
+    // TODO verify
+
+    storage_file_close(bin_file);
+    storage_file_free(bin_file);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+typedef struct {
+    SelectedFlashOptions selected;
+    const char* description;
+    char* path;
+    uint32_t addr;
+} FlashItem;
+
+static void _flash_all_files(EspFlasherApp* app) {
+    esp_loader_error_t err;
+    const int num_steps = app->num_selected_flash_options;
+
+#define NUM_FLASH_ITEMS 6
+    FlashItem items[NUM_FLASH_ITEMS] = {
+        {SelectedFlashBoot,
+         "bootloader",
+         app->bin_file_path_boot,
+         app->selected_flash_options[SelectedFlashS3Mode] ? ESP_ADDR_BOOT_S3 : ESP_ADDR_BOOT},
+        {SelectedFlashPart, "partition table", app->bin_file_path_part, ESP_ADDR_PART},
+        {SelectedFlashNvs, "NVS", app->bin_file_path_nvs, ESP_ADDR_NVS},
+        {SelectedFlashBootApp0, "boot_app0", app->bin_file_path_boot_app0, ESP_ADDR_BOOT_APP0},
+        {SelectedFlashApp, "firmware", app->bin_file_path_app, ESP_ADDR_APP},
+        {SelectedFlashCustom, "custom data", app->bin_file_path_custom, 0x0},
+        /* if you add more entries, update NUM_FLASH_ITEMS above! */
+    };
+
+    char user_msg[256];
+
+    int current_step = 1;
+    for(FlashItem* item = &items[0]; item < &items[NUM_FLASH_ITEMS]; ++item) {
+        if(app->selected_flash_options[item->selected]) {
+            snprintf(
+                user_msg,
+                sizeof(user_msg),
+                "Flashing %s (%d/%d) to address 0x%lx\n",
+                item->description,
+                current_step++,
+                num_steps,
+                item->addr);
+            loader_port_debug_print(user_msg);
+            err = _flash_file(app, item->path, item->addr);
+            if(err) {
+                break;
+            }
+        }
+    }
+}
+
+static int32_t esp_flasher_flash_bin(void* context) {
+    EspFlasherApp* app = (void*)context;
+    esp_loader_error_t err;
+
+    app->flash_worker_busy = true;
+
+    // alloc global objects
+    flash_rx_stream = furi_stream_buffer_alloc(RX_BUF_SIZE, 1);
+    timer = furi_timer_alloc(_timer_callback, FuriTimerTypePeriodic, app);
+
+    loader_port_debug_print("Connecting\n");
+    esp_loader_connect_args_t connect_config = ESP_LOADER_CONNECT_DEFAULT();
+    err = esp_loader_connect(&connect_config);
+    if(err != ESP_LOADER_SUCCESS) {
+        char err_msg[256];
+        snprintf(
+            err_msg,
+            sizeof(err_msg),
+            "Cannot connect to target. Error: %u\nMake sure the device is in bootloader/reflash mode, then try again.\n",
+            err);
+        loader_port_debug_print(err_msg);
+    }
+
+#if 0 // still getting packet drops with this
+    // higher BR
+    if(!err) {
+        loader_port_debug_print("Increasing speed for faster flash\n");
+        err = esp_loader_change_transmission_rate(230400);
+        if (err != ESP_LOADER_SUCCESS) {
+            char err_msg[256];
+            snprintf(
+                err_msg,
+                sizeof(err_msg),
+                "Cannot change transmission rate. Error: %u\n",
+                err);
+            loader_port_debug_print(err_msg);
+        }
+        furi_hal_uart_set_br(FuriHalUartIdUSART1, 230400);
+    }
+#endif
+
+    if(!err) {
+        loader_port_debug_print("Connected\n");
+        _flash_all_files(app);
+#if 0
+        loader_port_debug_print("Restoring transmission rate\n");
+        furi_hal_uart_set_br(FuriHalUartIdUSART1, 115200);
+#endif
+        loader_port_debug_print("Done flashing. Please reset the board manually.\n");
+    }
+
+    // done
+    app->flash_worker_busy = false;
+
+    // cleanup
+    furi_stream_buffer_free(flash_rx_stream);
+    flash_rx_stream = NULL;
+    furi_timer_free(timer);
+    return 0;
+}
+
+void esp_flasher_worker_start_thread(EspFlasherApp* app) {
+    global_app = app;
+
+    app->flash_worker = furi_thread_alloc();
+    furi_thread_set_name(app->flash_worker, "EspFlasherFlashWorker");
+    furi_thread_set_stack_size(app->flash_worker, 2048);
+    furi_thread_set_context(app->flash_worker, app);
+    furi_thread_set_callback(app->flash_worker, esp_flasher_flash_bin);
+    furi_thread_start(app->flash_worker);
+}
+
+void esp_flasher_worker_stop_thread(EspFlasherApp* app) {
+    furi_thread_join(app->flash_worker);
+    furi_thread_free(app->flash_worker);
+}
+
+esp_loader_error_t loader_port_read(uint8_t* data, uint16_t size, uint32_t timeout) {
+    size_t read = furi_stream_buffer_receive(flash_rx_stream, data, size, pdMS_TO_TICKS(timeout));
+    if(read < size) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_SUCCESS;
+    }
+}
+
+esp_loader_error_t loader_port_write(const uint8_t* data, uint16_t size, uint32_t timeout) {
+    UNUSED(timeout);
+    esp_flasher_uart_tx((uint8_t*)data, size);
+    return ESP_LOADER_SUCCESS;
+}
+
+void loader_port_enter_bootloader(void) {
+    // unimplemented
+}
+
+void loader_port_delay_ms(uint32_t ms) {
+    furi_delay_ms(ms);
+}
+
+void loader_port_start_timer(uint32_t ms) {
+    _remaining_time = ms;
+    furi_timer_start(timer, pdMS_TO_TICKS(1));
+}
+
+uint32_t loader_port_remaining_time(void) {
+    return _remaining_time;
+}
+
+extern void esp_flasher_console_output_handle_rx_data_cb(
+    uint8_t* buf,
+    size_t len,
+    void* context); // TODO cleanup
+void loader_port_debug_print(const char* str) {
+    if(global_app)
+        esp_flasher_console_output_handle_rx_data_cb((uint8_t*)str, strlen(str), global_app);
+}
+
+void loader_port_spi_set_cs(uint32_t level) {
+    UNUSED(level);
+    // unimplemented
+}
+
+void esp_flasher_worker_handle_rx_data_cb(uint8_t* buf, size_t len, void* context) {
+    UNUSED(context);
+    if(flash_rx_stream) {
+        furi_stream_buffer_send(flash_rx_stream, buf, len, 0);
+    } else {
+        // done flashing
+        if(global_app) esp_flasher_console_output_handle_rx_data_cb(buf, len, global_app);
+    }
+}
--- a/applications/external/esp_flasher/esp_flasher_worker.h
+++ b/applications/external/esp_flasher/esp_flasher_worker.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include "esp_flasher_app_i.h"
+#include "esp_flasher_uart.h"
+#define SERIAL_FLASHER_INTERFACE_UART /* TODO why is application.fam not passing this via cdefines */
+#include "esp_loader_io.h"
+
+#define ESP_ADDR_BOOT_S3 0x0
+#define ESP_ADDR_BOOT 0x1000
+#define ESP_ADDR_PART 0x8000
+#define ESP_ADDR_NVS 0x9000
+#define ESP_ADDR_BOOT_APP0 0xE000
+#define ESP_ADDR_APP 0x10000
+
+void esp_flasher_worker_start_thread(EspFlasherApp* app);
+void esp_flasher_worker_stop_thread(EspFlasherApp* app);
+void esp_flasher_worker_handle_rx_data_cb(uint8_t* buf, size_t len, void* context);
--- a/applications/external/esp_flasher/file/sequential_file.c
+++ b/applications/external/esp_flasher/file/sequential_file.c
@@ -0,0 +1,46 @@
+#include "sequential_file.h"
+
+char* sequential_file_resolve_path(
+    Storage* storage,
+    const char* dir,
+    const char* prefix,
+    const char* extension) {
+    if(storage == NULL || dir == NULL || prefix == NULL || extension == NULL) {
+        return NULL;
+    }
+
+    char file_path[256];
+    int file_index = 0;
+
+    do {
+        if(snprintf(
+               file_path, sizeof(file_path), "%s/%s_%d.%s", dir, prefix, file_index, extension) <
+           0) {
+            return NULL;
+        }
+        file_index++;
+    } while(storage_file_exists(storage, file_path));
+
+    return strdup(file_path);
+}
+
+bool sequential_file_open(
+    Storage* storage,
+    File* file,
+    const char* dir,
+    const char* prefix,
+    const char* extension) {
+    if(storage == NULL || file == NULL || dir == NULL || prefix == NULL || extension == NULL) {
+        return false;
+    }
+
+    char* file_path = sequential_file_resolve_path(storage, dir, prefix, extension);
+    if(file_path == NULL) {
+        return false;
+    }
+
+    bool success = storage_file_open(file, file_path, FSAM_WRITE, FSOM_CREATE_ALWAYS);
+    free(file_path);
+
+    return success;
+}
--- a/applications/external/esp_flasher/file/sequential_file.h
+++ b/applications/external/esp_flasher/file/sequential_file.h
@@ -0,0 +1,15 @@
+#pragma once
+
+#include <storage/storage.h>
+
+char* sequential_file_resolve_path(
+    Storage* storage,
+    const char* dir,
+    const char* prefix,
+    const char* extension);
+bool sequential_file_open(
+    Storage* storage,
+    File* file,
+    const char* dir,
+    const char* prefix,
+    const char* extension);
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeCache.txt
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeCache.txt
@@ -0,0 +1,366 @@
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+#  define COMPILER_VERSION_PATCH DEC(__SDCC_VERSION_PATCH)
+# else
+  /* SDCC = VRP */
+#  define COMPILER_VERSION_MAJOR DEC(SDCC/100)
+#  define COMPILER_VERSION_MINOR DEC(SDCC/10 % 10)
+#  define COMPILER_VERSION_PATCH DEC(SDCC    % 10)
+# endif
+
+
+/* These compilers are either not known or too old to define an
+  identification macro.  Try to identify the platform and guess that
+  it is the native compiler.  */
+#elif defined(__hpux) || defined(__hpua)
+# define COMPILER_ID "HP"
+
+#else /* unknown compiler */
+# define COMPILER_ID ""
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_compiler = "INFO" ":" "compiler[" COMPILER_ID "]";
+#ifdef SIMULATE_ID
+char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
+#endif
+
+#ifdef __QNXNTO__
+char const* qnxnto = "INFO" ":" "qnxnto[]";
+#endif
+
+#if defined(__CRAYXE) || defined(__CRAYXC)
+char const *info_cray = "INFO" ":" "compiler_wrapper[CrayPrgEnv]";
+#endif
+
+#define STRINGIFY_HELPER(X) #X
+#define STRINGIFY(X) STRINGIFY_HELPER(X)
+
+/* Identify known platforms by name.  */
+#if defined(__linux) || defined(__linux__) || defined(linux)
+# define PLATFORM_ID "Linux"
+
+#elif defined(__CYGWIN__)
+# define PLATFORM_ID "Cygwin"
+
+#elif defined(__MINGW32__)
+# define PLATFORM_ID "MinGW"
+
+#elif defined(__APPLE__)
+# define PLATFORM_ID "Darwin"
+
+#elif defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+# define PLATFORM_ID "Windows"
+
+#elif defined(__FreeBSD__) || defined(__FreeBSD)
+# define PLATFORM_ID "FreeBSD"
+
+#elif defined(__NetBSD__) || defined(__NetBSD)
+# define PLATFORM_ID "NetBSD"
+
+#elif defined(__OpenBSD__) || defined(__OPENBSD)
+# define PLATFORM_ID "OpenBSD"
+
+#elif defined(__sun) || defined(sun)
+# define PLATFORM_ID "SunOS"
+
+#elif defined(_AIX) || defined(__AIX) || defined(__AIX__) || defined(__aix) || defined(__aix__)
+# define PLATFORM_ID "AIX"
+
+#elif defined(__hpux) || defined(__hpux__)
+# define PLATFORM_ID "HP-UX"
+
+#elif defined(__HAIKU__)
+# define PLATFORM_ID "Haiku"
+
+#elif defined(__BeOS) || defined(__BEOS__) || defined(_BEOS)
+# define PLATFORM_ID "BeOS"
+
+#elif defined(__QNX__) || defined(__QNXNTO__)
+# define PLATFORM_ID "QNX"
+
+#elif defined(__tru64) || defined(_tru64) || defined(__TRU64__)
+# define PLATFORM_ID "Tru64"
+
+#elif defined(__riscos) || defined(__riscos__)
+# define PLATFORM_ID "RISCos"
+
+#elif defined(__sinix) || defined(__sinix__) || defined(__SINIX__)
+# define PLATFORM_ID "SINIX"
+
+#elif defined(__UNIX_SV__)
+# define PLATFORM_ID "UNIX_SV"
+
+#elif defined(__bsdos__)
+# define PLATFORM_ID "BSDOS"
+
+#elif defined(_MPRAS) || defined(MPRAS)
+# define PLATFORM_ID "MP-RAS"
+
+#elif defined(__osf) || defined(__osf__)
+# define PLATFORM_ID "OSF1"
+
+#elif defined(_SCO_SV) || defined(SCO_SV) || defined(sco_sv)
+# define PLATFORM_ID "SCO_SV"
+
+#elif defined(__ultrix) || defined(__ultrix__) || defined(_ULTRIX)
+# define PLATFORM_ID "ULTRIX"
+
+#elif defined(__XENIX__) || defined(_XENIX) || defined(XENIX)
+# define PLATFORM_ID "Xenix"
+
+#elif defined(__WATCOMC__)
+# if defined(__LINUX__)
+#  define PLATFORM_ID "Linux"
+
+# elif defined(__DOS__)
+#  define PLATFORM_ID "DOS"
+
+# elif defined(__OS2__)
+#  define PLATFORM_ID "OS2"
+
+# elif defined(__WINDOWS__)
+#  define PLATFORM_ID "Windows3x"
+
+# else /* unknown platform */
+#  define PLATFORM_ID
+# endif
+
+#elif defined(__INTEGRITY)
+# if defined(INT_178B)
+#  define PLATFORM_ID "Integrity178"
+
+# else /* regular Integrity */
+#  define PLATFORM_ID "Integrity"
+# endif
+
+#else /* unknown platform */
+# define PLATFORM_ID
+
+#endif
+
+/* For windows compilers MSVC and Intel we can determine
+   the architecture of the compiler being used.  This is because
+   the compilers do not have flags that can change the architecture,
+   but rather depend on which compiler is being used
+*/
+#if defined(_WIN32) && defined(_MSC_VER)
+# if defined(_M_IA64)
+#  define ARCHITECTURE_ID "IA64"
+
+# elif defined(_M_X64) || defined(_M_AMD64)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# elif defined(_M_ARM64)
+#  define ARCHITECTURE_ID "ARM64"
+
+# elif defined(_M_ARM)
+#  if _M_ARM == 4
+#   define ARCHITECTURE_ID "ARMV4I"
+#  elif _M_ARM == 5
+#   define ARCHITECTURE_ID "ARMV5I"
+#  else
+#   define ARCHITECTURE_ID "ARMV" STRINGIFY(_M_ARM)
+#  endif
+
+# elif defined(_M_MIPS)
+#  define ARCHITECTURE_ID "MIPS"
+
+# elif defined(_M_SH)
+#  define ARCHITECTURE_ID "SHx"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__WATCOMC__)
+# if defined(_M_I86)
+#  define ARCHITECTURE_ID "I86"
+
+# elif defined(_M_IX86)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
+# if defined(__ICCARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__ICCRX__)
+#  define ARCHITECTURE_ID "RX"
+
+# elif defined(__ICCRH850__)
+#  define ARCHITECTURE_ID "RH850"
+
+# elif defined(__ICCRL78__)
+#  define ARCHITECTURE_ID "RL78"
+
+# elif defined(__ICCRISCV__)
+#  define ARCHITECTURE_ID "RISCV"
+
+# elif defined(__ICCAVR__)
+#  define ARCHITECTURE_ID "AVR"
+
+# elif defined(__ICC430__)
+#  define ARCHITECTURE_ID "MSP430"
+
+# elif defined(__ICCV850__)
+#  define ARCHITECTURE_ID "V850"
+
+# elif defined(__ICC8051__)
+#  define ARCHITECTURE_ID "8051"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+
+#elif defined(__ghs__)
+# if defined(__PPC64__)
+#  define ARCHITECTURE_ID "PPC64"
+
+# elif defined(__ppc__)
+#  define ARCHITECTURE_ID "PPC"
+
+# elif defined(__ARM__)
+#  define ARCHITECTURE_ID "ARM"
+
+# elif defined(__x86_64__)
+#  define ARCHITECTURE_ID "x64"
+
+# elif defined(__i386__)
+#  define ARCHITECTURE_ID "X86"
+
+# else /* unknown architecture */
+#  define ARCHITECTURE_ID ""
+# endif
+#else
+#  define ARCHITECTURE_ID
+#endif
+
+/* Convert integer to decimal digit literals.  */
+#define DEC(n)                   \
+  ('0' + (((n) / 10000000)%10)), \
+  ('0' + (((n) / 1000000)%10)),  \
+  ('0' + (((n) / 100000)%10)),   \
+  ('0' + (((n) / 10000)%10)),    \
+  ('0' + (((n) / 1000)%10)),     \
+  ('0' + (((n) / 100)%10)),      \
+  ('0' + (((n) / 10)%10)),       \
+  ('0' +  ((n) % 10))
+
+/* Convert integer to hex digit literals.  */
+#define HEX(n)             \
+  ('0' + ((n)>>28 & 0xF)), \
+  ('0' + ((n)>>24 & 0xF)), \
+  ('0' + ((n)>>20 & 0xF)), \
+  ('0' + ((n)>>16 & 0xF)), \
+  ('0' + ((n)>>12 & 0xF)), \
+  ('0' + ((n)>>8  & 0xF)), \
+  ('0' + ((n)>>4  & 0xF)), \
+  ('0' + ((n)     & 0xF))
+
+/* Construct a string literal encoding the version number components. */
+#ifdef COMPILER_VERSION_MAJOR
+char const info_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','[',
+  COMPILER_VERSION_MAJOR,
+# ifdef COMPILER_VERSION_MINOR
+  '.', COMPILER_VERSION_MINOR,
+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
+#   ifdef COMPILER_VERSION_TWEAK
+    '.', COMPILER_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct a string literal encoding the internal version number. */
+#ifdef COMPILER_VERSION_INTERNAL
+char const info_version_internal[] = {
+  'I', 'N', 'F', 'O', ':',
+  'c','o','m','p','i','l','e','r','_','v','e','r','s','i','o','n','_',
+  'i','n','t','e','r','n','a','l','[',
+  COMPILER_VERSION_INTERNAL,']','\0'};
+#endif
+
+/* Construct a string literal encoding the version number components. */
+#ifdef SIMULATE_VERSION_MAJOR
+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
+# ifdef SIMULATE_VERSION_MINOR
+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
+/* Construct the string literal in pieces to prevent the source from
+   getting matched.  Store it in a pointer rather than an array
+   because some compilers will just produce instructions to fill the
+   array rather than assigning a pointer to a static array.  */
+char const* info_platform = "INFO" ":" "platform[" PLATFORM_ID "]";
+char const* info_arch = "INFO" ":" "arch[" ARCHITECTURE_ID "]";
+
+
+
+
+#if !defined(__STDC__)
+# if (defined(_MSC_VER) && !defined(__clang__)) \
+  || (defined(__ibmxl__) || defined(__IBMC__))
+#  define C_DIALECT "90"
+# else
+#  define C_DIALECT
+# endif
+#elif __STDC_VERSION__ >= 201000L
+# define C_DIALECT "11"
+#elif __STDC_VERSION__ >= 199901L
+# define C_DIALECT "99"
+#else
+# define C_DIALECT "90"
+#endif
+const char* info_language_dialect_default =
+  "INFO" ":" "dialect_default[" C_DIALECT "]";
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef ID_VOID_MAIN
+void main() {}
+#else
+# if defined(__CLASSIC_C__)
+int main(argc, argv) int argc; char *argv[];
+# else
+int main(int argc, char* argv[])
+# endif
+{
+  int require = 0;
+  require += info_compiler[argc];
+  require += info_platform[argc];
+  require += info_arch[argc];
+#ifdef COMPILER_VERSION_MAJOR
+  require += info_version[argc];
+#endif
+#ifdef COMPILER_VERSION_INTERNAL
+  require += info_version_internal[argc];
+#endif
+#ifdef SIMULATE_ID
+  require += info_simulate[argc];
+#endif
+#ifdef SIMULATE_VERSION_MAJOR
+  require += info_simulate_version[argc];
+#endif
+#if defined(__CRAYXE) || defined(__CRAYXC)
+  require += info_cray[argc];
+#endif
+  require += info_language_dialect_default[argc];
+  (void)argv;
+  return require;
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeFiles/3.16.3/CompilerIdC/a.out
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeFiles/3.16.3/CompilerIdC/a.out
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeFiles/3.16.3/CompilerIdCXX/CMakeCXXCompilerId.cpp
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeFiles/3.16.3/CompilerIdCXX/CMakeCXXCompilerId.cpp
@@ -0,0 +1,660 @@
+/* This source file must have a .cpp extension so that all C++ compilers
+   recognize the extension without flags.  Borland does not know .cxx for
+   example.  */
+#ifndef __cplusplus
+# error "A C compiler has been selected for C++."
+#endif
+
+
+/* Version number components: V=Version, R=Revision, P=Patch
+   Version date components:   YYYY=Year, MM=Month,   DD=Day  */
+
+#if defined(__COMO__)
+# define COMPILER_ID "Comeau"
+  /* __COMO_VERSION__ = VRR */
+# define COMPILER_VERSION_MAJOR DEC(__COMO_VERSION__ / 100)
+# define COMPILER_VERSION_MINOR DEC(__COMO_VERSION__ % 100)
+
+#elif defined(__INTEL_COMPILER) || defined(__ICC)
+# define COMPILER_ID "Intel"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# if defined(__GNUC__)
+#  define SIMULATE_ID "GNU"
+# endif
+  /* __INTEL_COMPILER = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__INTEL_COMPILER/100)
+# define COMPILER_VERSION_MINOR DEC(__INTEL_COMPILER/10 % 10)
+# if defined(__INTEL_COMPILER_UPDATE)
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER_UPDATE)
+# else
+#  define COMPILER_VERSION_PATCH DEC(__INTEL_COMPILER   % 10)
+# endif
+# if defined(__INTEL_COMPILER_BUILD_DATE)
+  /* __INTEL_COMPILER_BUILD_DATE = YYYYMMDD */
+#  define COMPILER_VERSION_TWEAK DEC(__INTEL_COMPILER_BUILD_DATE)
+# endif
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# if defined(__GNUC__)
+#  define SIMULATE_VERSION_MAJOR DEC(__GNUC__)
+# elif defined(__GNUG__)
+#  define SIMULATE_VERSION_MAJOR DEC(__GNUG__)
+# endif
+# if defined(__GNUC_MINOR__)
+#  define SIMULATE_VERSION_MINOR DEC(__GNUC_MINOR__)
+# endif
+# if defined(__GNUC_PATCHLEVEL__)
+#  define SIMULATE_VERSION_PATCH DEC(__GNUC_PATCHLEVEL__)
+# endif
+
+#elif defined(__PATHCC__)
+# define COMPILER_ID "PathScale"
+# define COMPILER_VERSION_MAJOR DEC(__PATHCC__)
+# define COMPILER_VERSION_MINOR DEC(__PATHCC_MINOR__)
+# if defined(__PATHCC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PATHCC_PATCHLEVEL__)
+# endif
+
+#elif defined(__BORLANDC__) && defined(__CODEGEARC_VERSION__)
+# define COMPILER_ID "Embarcadero"
+# define COMPILER_VERSION_MAJOR HEX(__CODEGEARC_VERSION__>>24 & 0x00FF)
+# define COMPILER_VERSION_MINOR HEX(__CODEGEARC_VERSION__>>16 & 0x00FF)
+# define COMPILER_VERSION_PATCH DEC(__CODEGEARC_VERSION__     & 0xFFFF)
+
+#elif defined(__BORLANDC__)
+# define COMPILER_ID "Borland"
+  /* __BORLANDC__ = 0xVRR */
+# define COMPILER_VERSION_MAJOR HEX(__BORLANDC__>>8)
+# define COMPILER_VERSION_MINOR HEX(__BORLANDC__ & 0xFF)
+
+#elif defined(__WATCOMC__) && __WATCOMC__ < 1200
+# define COMPILER_ID "Watcom"
+   /* __WATCOMC__ = VVRR */
+# define COMPILER_VERSION_MAJOR DEC(__WATCOMC__ / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__WATCOMC__)
+# define COMPILER_ID "OpenWatcom"
+   /* __WATCOMC__ = VVRP + 1100 */
+# define COMPILER_VERSION_MAJOR DEC((__WATCOMC__ - 1100) / 100)
+# define COMPILER_VERSION_MINOR DEC((__WATCOMC__ / 10) % 10)
+# if (__WATCOMC__ % 10) > 0
+#  define COMPILER_VERSION_PATCH DEC(__WATCOMC__ % 10)
+# endif
+
+#elif defined(__SUNPRO_CC)
+# define COMPILER_ID "SunPro"
+# if __SUNPRO_CC >= 0x5100
+   /* __SUNPRO_CC = 0xVRRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>12)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xFF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# else
+   /* __SUNPRO_CC = 0xVRP */
+#  define COMPILER_VERSION_MAJOR HEX(__SUNPRO_CC>>8)
+#  define COMPILER_VERSION_MINOR HEX(__SUNPRO_CC>>4 & 0xF)
+#  define COMPILER_VERSION_PATCH HEX(__SUNPRO_CC    & 0xF)
+# endif
+
+#elif defined(__HP_aCC)
+# define COMPILER_ID "HP"
+  /* __HP_aCC = VVRRPP */
+# define COMPILER_VERSION_MAJOR DEC(__HP_aCC/10000)
+# define COMPILER_VERSION_MINOR DEC(__HP_aCC/100 % 100)
+# define COMPILER_VERSION_PATCH DEC(__HP_aCC     % 100)
+
+#elif defined(__DECCXX)
+# define COMPILER_ID "Compaq"
+  /* __DECCXX_VER = VVRRTPPPP */
+# define COMPILER_VERSION_MAJOR DEC(__DECCXX_VER/10000000)
+# define COMPILER_VERSION_MINOR DEC(__DECCXX_VER/100000  % 100)
+# define COMPILER_VERSION_PATCH DEC(__DECCXX_VER         % 10000)
+
+#elif defined(__IBMCPP__) && defined(__COMPILER_VER__)
+# define COMPILER_ID "zOS"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__ibmxl__) && defined(__clang__)
+# define COMPILER_ID "XLClang"
+# define COMPILER_VERSION_MAJOR DEC(__ibmxl_version__)
+# define COMPILER_VERSION_MINOR DEC(__ibmxl_release__)
+# define COMPILER_VERSION_PATCH DEC(__ibmxl_modification__)
+# define COMPILER_VERSION_TWEAK DEC(__ibmxl_ptf_fix_level__)
+
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ >= 800
+# define COMPILER_ID "XL"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__IBMCPP__) && !defined(__COMPILER_VER__) && __IBMCPP__ < 800
+# define COMPILER_ID "VisualAge"
+  /* __IBMCPP__ = VRP */
+# define COMPILER_VERSION_MAJOR DEC(__IBMCPP__/100)
+# define COMPILER_VERSION_MINOR DEC(__IBMCPP__/10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__IBMCPP__    % 10)
+
+#elif defined(__PGI)
+# define COMPILER_ID "PGI"
+# define COMPILER_VERSION_MAJOR DEC(__PGIC__)
+# define COMPILER_VERSION_MINOR DEC(__PGIC_MINOR__)
+# if defined(__PGIC_PATCHLEVEL__)
+#  define COMPILER_VERSION_PATCH DEC(__PGIC_PATCHLEVEL__)
+# endif
+
+#elif defined(_CRAYC)
+# define COMPILER_ID "Cray"
+# define COMPILER_VERSION_MAJOR DEC(_RELEASE_MAJOR)
+# define COMPILER_VERSION_MINOR DEC(_RELEASE_MINOR)
+
+#elif defined(__TI_COMPILER_VERSION__)
+# define COMPILER_ID "TI"
+  /* __TI_COMPILER_VERSION__ = VVVRRRPPP */
+# define COMPILER_VERSION_MAJOR DEC(__TI_COMPILER_VERSION__/1000000)
+# define COMPILER_VERSION_MINOR DEC(__TI_COMPILER_VERSION__/1000   % 1000)
+# define COMPILER_VERSION_PATCH DEC(__TI_COMPILER_VERSION__        % 1000)
+
+#elif defined(__FUJITSU) || defined(__FCC_VERSION) || defined(__fcc_version)
+# define COMPILER_ID "Fujitsu"
+
+#elif defined(__ghs__)
+# define COMPILER_ID "GHS"
+/* __GHS_VERSION_NUMBER = VVVVRP */
+# ifdef __GHS_VERSION_NUMBER
+# define COMPILER_VERSION_MAJOR DEC(__GHS_VERSION_NUMBER / 100)
+# define COMPILER_VERSION_MINOR DEC(__GHS_VERSION_NUMBER / 10 % 10)
+# define COMPILER_VERSION_PATCH DEC(__GHS_VERSION_NUMBER      % 10)
+# endif
+
+#elif defined(__SCO_VERSION__)
+# define COMPILER_ID "SCO"
+
+#elif defined(__ARMCC_VERSION) && !defined(__clang__)
+# define COMPILER_ID "ARMCC"
+#if __ARMCC_VERSION >= 1000000
+  /* __ARMCC_VERSION = VRRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/1000000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 100)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION     % 10000)
+#else
+  /* __ARMCC_VERSION = VRPPPP */
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCC_VERSION/100000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCC_VERSION/10000 % 10)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCC_VERSION    % 10000)
+#endif
+
+
+#elif defined(__clang__) && defined(__apple_build_version__)
+# define COMPILER_ID "AppleClang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
+# endif
+# define COMPILER_VERSION_MAJOR DEC(__clang_major__)
+# define COMPILER_VERSION_MINOR DEC(__clang_minor__)
+# define COMPILER_VERSION_PATCH DEC(__clang_patchlevel__)
+# if defined(_MSC_VER)
+   /* _MSC_VER = VVRR */
+#  define SIMULATE_VERSION_MAJOR DEC(_MSC_VER / 100)
+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
+# endif
+# define COMPILER_VERSION_TWEAK DEC(__apple_build_version__)
+
+#elif defined(__clang__) && defined(__ARMCOMPILER_VERSION)
+# define COMPILER_ID "ARMClang"
+  # define COMPILER_VERSION_MAJOR DEC(__ARMCOMPILER_VERSION/1000000)
+  # define COMPILER_VERSION_MINOR DEC(__ARMCOMPILER_VERSION/10000 % 100)
+  # define COMPILER_VERSION_PATCH DEC(__ARMCOMPILER_VERSION     % 10000)
+# define COMPILER_VERSION_INTERNAL DEC(__ARMCOMPILER_VERSION)
+
+#elif defined(__clang__)
+# define COMPILER_ID "Clang"
+# if defined(_MSC_VER)
+#  define SIMULATE_ID "MSVC"
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+   /* _MSC_VER = VVRR */
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+#  define SIMULATE_VERSION_MINOR DEC(_MSC_VER % 100)
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+    /* _MSC_FULL_VER = VVRRPPPPP */
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+# define COMPILER_VERSION_PATCH HEX(__VISUALDSPVERSION__>>8  & 0xFF)
+#endif
+
+#elif defined(__IAR_SYSTEMS_ICC__) || defined(__IAR_SYSTEMS_ICC)
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+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 1000000)
+#  define COMPILER_VERSION_MINOR DEC(((__VER__) / 1000) % 1000)
+#  define COMPILER_VERSION_PATCH DEC((__VER__) % 1000)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# elif defined(__VER__) && (defined(__ICCAVR__) || defined(__ICCRX__) || defined(__ICCRH850__) || defined(__ICCRL78__) || defined(__ICC430__) || defined(__ICCRISCV__) || defined(__ICCV850__) || defined(__ICC8051__))
+#  define COMPILER_VERSION_MAJOR DEC((__VER__) / 100)
+#  define COMPILER_VERSION_MINOR DEC((__VER__) - (((__VER__) / 100)*100))
+#  define COMPILER_VERSION_PATCH DEC(__SUBVERSION__)
+#  define COMPILER_VERSION_INTERNAL DEC(__IAR_SYSTEMS_ICC__)
+# endif
+
+
+/* These compilers are either not known or too old to define an
+  identification macro.  Try to identify the platform and guess that
+  it is the native compiler.  */
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+
+#else /* unknown compiler */
+# define COMPILER_ID ""
+#endif
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+#define STRINGIFY(X) STRINGIFY_HELPER(X)
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+#elif defined(__CYGWIN__)
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+# define PLATFORM_ID "Windows"
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+#elif defined(__FreeBSD__) || defined(__FreeBSD)
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+#elif defined(__NetBSD__) || defined(__NetBSD)
+# define PLATFORM_ID "NetBSD"
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+#elif defined(__OpenBSD__) || defined(__OPENBSD)
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+#elif defined(__WATCOMC__)
+# if defined(__LINUX__)
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+# elif defined(__DOS__)
+#  define PLATFORM_ID "DOS"
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+# elif defined(__OS2__)
+#  define PLATFORM_ID "OS2"
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+# elif defined(__WINDOWS__)
+#  define PLATFORM_ID "Windows3x"
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+# else /* unknown platform */
+#  define PLATFORM_ID
+# endif
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+# if defined(INT_178B)
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+# define PLATFORM_ID
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+#endif
+
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+  ('0' + ((n)>>16 & 0xF)), \
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+char const info_version[] = {
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+  COMPILER_VERSION_MAJOR,
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+#  ifdef COMPILER_VERSION_PATCH
+   '.', COMPILER_VERSION_PATCH,
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+char const info_version_internal[] = {
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+  COMPILER_VERSION_INTERNAL,']','\0'};
+#endif
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+char const info_simulate_version[] = {
+  'I', 'N', 'F', 'O', ':',
+  's','i','m','u','l','a','t','e','_','v','e','r','s','i','o','n','[',
+  SIMULATE_VERSION_MAJOR,
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+  '.', SIMULATE_VERSION_MINOR,
+#  ifdef SIMULATE_VERSION_PATCH
+   '.', SIMULATE_VERSION_PATCH,
+#   ifdef SIMULATE_VERSION_TWEAK
+    '.', SIMULATE_VERSION_TWEAK,
+#   endif
+#  endif
+# endif
+  ']','\0'};
+#endif
+
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+
+
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+#  if defined(__INTEL_CXX11_MODE__)
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+#endif
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+const char* info_language_dialect_default = "INFO" ":" "dialect_default["
+#if CXX_STD > 201703L
+  "20"
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+  "14"
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+  "11"
+#else
+  "98"
+#endif
+"]";
+
+/*--------------------------------------------------------------------------*/
+
+int main(int argc, char* argv[])
+{
+  int require = 0;
+  require += info_compiler[argc];
+  require += info_platform[argc];
+#ifdef COMPILER_VERSION_MAJOR
+  require += info_version[argc];
+#endif
+#ifdef COMPILER_VERSION_INTERNAL
+  require += info_version_internal[argc];
+#endif
+#ifdef SIMULATE_ID
+  require += info_simulate[argc];
+#endif
+#ifdef SIMULATE_VERSION_MAJOR
+  require += info_simulate_version[argc];
+#endif
+#if defined(__CRAYXE) || defined(__CRAYXC)
+  require += info_cray[argc];
+#endif
+  require += info_language_dialect_default[argc];
+  (void)argv;
+  return require;
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+    arg [--build-id] ==> ignore
+    arg [--eh-frame-hdr] ==> ignore
+    arg [-m] ==> ignore
+    arg [elf_x86_64] ==> ignore
+    arg [--hash-style=gnu] ==> ignore
+    arg [--as-needed] ==> ignore
+    arg [-export-dynamic] ==> ignore
+    arg [-dynamic-linker] ==> ignore
+    arg [/lib64/ld-linux-x86-64.so.2] ==> ignore
+    arg [-pie] ==> ignore
+    arg [-znow] ==> ignore
+    arg [-zrelro] ==> ignore
+    arg [-o] ==> ignore
+    arg [cmTC_b76ad] ==> ignore
+    arg [/usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o] ==> ignore
+    arg [/usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crti.o] ==> ignore
+    arg [/usr/lib/gcc/x86_64-linux-gnu/9/crtbeginS.o] ==> ignore
+    arg [-L/usr/lib/gcc/x86_64-linux-gnu/9] ==> dir [/usr/lib/gcc/x86_64-linux-gnu/9]
+    arg [-L/usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu] ==> dir [/usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu]
+    arg [-L/usr/lib/gcc/x86_64-linux-gnu/9/../../../../lib] ==> dir [/usr/lib/gcc/x86_64-linux-gnu/9/../../../../lib]
+    arg [-L/lib/x86_64-linux-gnu] ==> dir [/lib/x86_64-linux-gnu]
+    arg [-L/lib/../lib] ==> dir [/lib/../lib]
+    arg [-L/usr/lib/x86_64-linux-gnu] ==> dir [/usr/lib/x86_64-linux-gnu]
+    arg [-L/usr/lib/../lib] ==> dir [/usr/lib/../lib]
+    arg [-L/usr/lib/gcc/x86_64-linux-gnu/9/../../..] ==> dir [/usr/lib/gcc/x86_64-linux-gnu/9/../../..]
+    arg [CMakeFiles/cmTC_b76ad.dir/CMakeCXXCompilerABI.cpp.o] ==> ignore
+    arg [-lstdc++] ==> lib [stdc++]
+    arg [-lm] ==> lib [m]
+    arg [-lgcc_s] ==> lib [gcc_s]
+    arg [-lgcc] ==> lib [gcc]
+    arg [-lc] ==> lib [c]
+    arg [-lgcc_s] ==> lib [gcc_s]
+    arg [-lgcc] ==> lib [gcc]
+    arg [/usr/lib/gcc/x86_64-linux-gnu/9/crtendS.o] ==> ignore
+    arg [/usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/crtn.o] ==> ignore
+  collapse library dir [/usr/lib/gcc/x86_64-linux-gnu/9] ==> [/usr/lib/gcc/x86_64-linux-gnu/9]
+  collapse library dir [/usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu] ==> [/usr/lib/x86_64-linux-gnu]
+  collapse library dir [/usr/lib/gcc/x86_64-linux-gnu/9/../../../../lib] ==> [/usr/lib]
+  collapse library dir [/lib/x86_64-linux-gnu] ==> [/lib/x86_64-linux-gnu]
+  collapse library dir [/lib/../lib] ==> [/lib]
+  collapse library dir [/usr/lib/x86_64-linux-gnu] ==> [/usr/lib/x86_64-linux-gnu]
+  collapse library dir [/usr/lib/../lib] ==> [/usr/lib]
+  collapse library dir [/usr/lib/gcc/x86_64-linux-gnu/9/../../..] ==> [/usr/lib]
+  implicit libs: [stdc++;m;gcc_s;gcc;c;gcc_s;gcc]
+  implicit dirs: [/usr/lib/gcc/x86_64-linux-gnu/9;/usr/lib/x86_64-linux-gnu;/usr/lib;/lib/x86_64-linux-gnu;/lib]
+  implicit fwks: []
+
+
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeFiles/cmake.check_cache
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeFiles/cmake.check_cache
@@ -0,0 +1 @@
+# This file is generated by cmake for dependency checking of the CMakeCache.txt file
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeLists.txt
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/CMakeLists.txt
@@ -0,0 +1,119 @@
+cmake_minimum_required(VERSION 3.5)
+
+set(srcs
+    src/esp_targets.c
+    src/md5_hash.c
+    src/esp_loader.c
+    src/protocol_common.c
+)
+
+if (DEFINED ESP_PLATFORM)
+    if (${CONFIG_SERIAL_FLASHER_INTERFACE_UART})
+        list(APPEND srcs
+            src/protocol_uart.c
+            src/slip.c
+            port/esp32_port.c
+        )
+    elseif (${CONFIG_SERIAL_FLASHER_INTERFACE_SPI})
+        list(APPEND srcs
+            src/protocol_spi.c
+            port/esp32_spi_port.c
+        )
+    endif()
+    # Register component to esp-idf build system
+    if ("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER "4.0")
+        # esp_timer component was introduced in v4.2
+        set(priv_requires driver)
+        if("${IDF_VERSION_MAJOR}.${IDF_VERSION_MINOR}" VERSION_GREATER "4.1")
+            list(APPEND priv_requires esp_timer)
+        endif()
+
+        idf_component_register(SRCS ${srcs}
+                               INCLUDE_DIRS include port
+                               PRIV_INCLUDE_DIRS private_include
+                               PRIV_REQUIRES ${priv_requires})
+
+        set(target ${COMPONENT_LIB})
+        component_compile_options(-Wstrict-prototypes)
+    else()
+        # Remove when dropping support for IDF 3.3
+        set(COMPONENT_SRCS ${srcs})
+        set(COMPONENT_ADD_INCLUDEDIRS include port)
+        set(COMPONENT_PRIV_INCLUDEDIRS private_include)
+        register_component()
+        set(target ${COMPONENT_TARGET})
+    endif()
+
+else()
+    if (NOT DEFINED SERIAL_FLASHER_INTERFACE_UART AND NOT DEFINED SERIAL_FLASHER_INTERFACE_SPI)
+        set(SERIAL_FLASHER_INTERFACE_UART true)
+    endif()
+
+    if (DEFINED SERIAL_FLASHER_INTERFACE_UART)
+        list(APPEND srcs
+            src/protocol_uart.c
+            src/slip.c
+        )
+    elseif (DEFINED SERIAL_FLASHER_INTERFACE_SPI)
+        list(APPEND srcs src/protocol_spi.c)
+    endif()
+
+    # Create traditional CMake target
+    add_library(flasher ${srcs})
+
+    target_include_directories(flasher PUBLIC include port PRIVATE private_include)
+
+    if(PORT STREQUAL "STM32")
+        target_link_libraries(flasher PUBLIC stm_cube)
+        target_sources(flasher PRIVATE port/stm32_port.c)
+    elseif(PORT STREQUAL "RASPBERRY_PI")
+        find_library(pigpio_LIB pigpio)
+        target_link_libraries(flasher PUBLIC ${pigpio_LIB})
+        target_sources(flasher PRIVATE port/raspberry_port.c)
+    else()
+        message(FATAL_ERROR "Selected port is not supported")
+    endif()
+
+    set(target flasher)
+
+endif()
+
+if (DEFINED SERIAL_FLASHER_INTERFACE_UART OR CONFIG_SERIAL_FLASHER_INTERFACE_UART STREQUAL "y")
+    target_compile_definitions(${target}
+    PUBLIC
+        SERIAL_FLASHER_INTERFACE_UART
+    )
+    if (DEFINED MD5_ENABLED OR CONFIG_SERIAL_FLASHER_MD5_ENABLED)
+        target_compile_definitions(${target} PUBLIC MD5_ENABLED=1)
+    endif()
+elseif (DEFINED SERIAL_FLASHER_INTERFACE_SPI OR CONFIG_SERIAL_FLASHER_INTERFACE_SPI STREQUAL "y")
+    target_compile_definitions(${target}
+    PUBLIC
+        SERIAL_FLASHER_INTERFACE_SPI
+    )
+endif()
+
+if(DEFINED SERIAL_FLASHER_DEBUG_TRACE OR CONFIG_SERIAL_FLASHER_DEBUG_TRACE)
+    target_compile_definitions(${target} PUBLIC SERIAL_FLASHER_DEBUG_TRACE)
+endif()
+
+if(DEFINED CONFIG_SERIAL_FLASHER_RESET_HOLD_TIME_MS AND DEFINED CONFIG_SERIAL_FLASHER_BOOT_HOLD_TIME_MS)
+    target_compile_definitions(${target}
+    PUBLIC
+        SERIAL_FLASHER_RESET_HOLD_TIME_MS=${CONFIG_SERIAL_FLASHER_RESET_HOLD_TIME_MS}
+        SERIAL_FLASHER_BOOT_HOLD_TIME_MS=${CONFIG_SERIAL_FLASHER_BOOT_HOLD_TIME_MS}
+    )
+else()
+    if(NOT DEFINED SERIAL_FLASHER_RESET_HOLD_TIME_MS)
+        target_compile_definitions(${target}
+        PUBLIC
+            SERIAL_FLASHER_RESET_HOLD_TIME_MS=100
+        )
+    endif()
+    if(NOT DEFINED SERIAL_FLASHER_BOOT_HOLD_TIME_MS)
+        target_compile_definitions(${target}
+        PUBLIC
+            SERIAL_FLASHER_BOOT_HOLD_TIME_MS=50
+        )
+    endif()
+endif()
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/Kconfig
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/Kconfig
@@ -0,0 +1,34 @@
+menu "ESP serial flasher"
+    config SERIAL_FLASHER_MD5_ENABLED
+        bool "Enable MD5 check"
+        default y
+        help
+            Select this option to enable MD5 hashsum check after flashing.
+
+    choice SERIAL_FLASHER_INTERFACE
+        prompt "Hardware interface to use for firmware download"
+        default SERIAL_FLASHER_INTERFACE_UART
+        help
+            esp-serial-flasher can work with UART and SPI interfaces.
+
+        config SERIAL_FLASHER_INTERFACE_UART
+            bool "UART"
+
+        config SERIAL_FLASHER_INTERFACE_SPI
+            bool "SPI (Only supports downloading to RAM, experimental)"
+
+    endchoice
+
+    config SERIAL_FLASHER_RESET_HOLD_TIME_MS
+        int "Time for which the reset pin is asserted when doing a hard reset"
+        default 100
+
+    config SERIAL_FLASHER_BOOT_HOLD_TIME_MS
+        int "Time for which the boot pin is asserted when doing a hard reset"
+        default 50
+
+    config SERIAL_FLASHER_DEBUG_TRACE
+        bool "Enable debug tracing output (only transfer data tracing is supported at the time)"
+        default n
+
+endmenu
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/idf_component.yml
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/idf_component.yml
@@ -0,0 +1,3 @@
+version: "0.2.0"
+description: Serial flasher component provides portable library for flashing or loading ram loadble app to Espressif SoCs from other host microcontroller
+url: https://github.com/espressif/esp-serial-flasher
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/include/esp_loader.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/include/esp_loader.h
@@ -0,0 +1,313 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Used for backwards compatibility with the previous API */
+#define esp_loader_change_baudrate esp_loader_change_transmission_rate
+
+/**
+ * Macro which can be used to check the error code,
+ * and return in case the code is not ESP_LOADER_SUCCESS.
+ */
+#define RETURN_ON_ERROR(x) do {         \
+    esp_loader_error_t _err_ = (x);     \
+    if (_err_ != ESP_LOADER_SUCCESS) {  \
+        return _err_;                   \
+    }                                   \
+} while(0)
+
+/**
+ * @brief Error codes
+ */
+typedef enum {
+    ESP_LOADER_SUCCESS,                /*!< Success */
+    ESP_LOADER_ERROR_FAIL,             /*!< Unspecified error */
+    ESP_LOADER_ERROR_TIMEOUT,          /*!< Timeout elapsed */
+    ESP_LOADER_ERROR_IMAGE_SIZE,       /*!< Image size to flash is larger than flash size */
+    ESP_LOADER_ERROR_INVALID_MD5,      /*!< Computed and received MD5 does not match */
+    ESP_LOADER_ERROR_INVALID_PARAM,    /*!< Invalid parameter passed to function */
+    ESP_LOADER_ERROR_INVALID_TARGET,   /*!< Connected target is invalid */
+    ESP_LOADER_ERROR_UNSUPPORTED_CHIP, /*!< Attached chip is not supported */
+    ESP_LOADER_ERROR_UNSUPPORTED_FUNC, /*!< Function is not supported on attached target */
+    ESP_LOADER_ERROR_INVALID_RESPONSE  /*!< Internal error */
+} esp_loader_error_t;
+
+/**
+ * @brief Supported targets
+ */
+typedef enum {
+    ESP8266_CHIP = 0,
+    ESP32_CHIP   = 1,
+    ESP32S2_CHIP = 2,
+    ESP32C3_CHIP = 3,
+    ESP32S3_CHIP = 4,
+    ESP32C2_CHIP = 5,
+    ESP32H4_CHIP = 6,
+    ESP32H2_CHIP = 7,
+    ESP_MAX_CHIP = 8,
+    ESP_UNKNOWN_CHIP = 8
+} target_chip_t;
+
+/**
+ * @brief Application binary header
+ */
+typedef struct {
+  uint8_t magic;
+  uint8_t segments;
+  uint8_t flash_mode;
+  uint8_t flash_size_freq;
+  uint32_t entrypoint;
+} esp_loader_bin_header_t;
+
+/**
+ * @brief Segment binary header
+ */
+typedef struct {
+    uint32_t addr;
+    uint32_t size;
+    uint8_t *data;
+} esp_loader_bin_segment_t;
+
+/**
+ * @brief SPI pin configuration arguments
+ */
+typedef union {
+    struct {
+        uint32_t pin_clk: 6;
+        uint32_t pin_q:   6;
+        uint32_t pin_d:   6;
+        uint32_t pin_cs:  6;
+        uint32_t pin_hd:  6;
+        uint32_t zero:    2;
+    };
+    uint32_t val;
+} esp_loader_spi_config_t;
+
+/**
+ * @brief Connection arguments
+ */
+typedef struct {
+    uint32_t sync_timeout;  /*!< Maximum time to wait for response from serial interface. */
+    int32_t trials;         /*!< Number of trials to connect to target. If greater than 1,
+                               100 millisecond delay is inserted after each try. */
+} esp_loader_connect_args_t;
+
+#define ESP_LOADER_CONNECT_DEFAULT() { \
+  .sync_timeout = 100, \
+  .trials = 10, \
+}
+
+/**
+  * @brief Connects to the target
+  *
+  * @param connect_args[in] Timing parameters to be used for connecting to target.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_connect(esp_loader_connect_args_t *connect_args);
+
+/**
+  * @brief   Returns attached target chip.
+  *
+  * @warning This function can only be called after connection with target
+  *          has been successfully established by calling esp_loader_connect().
+  *
+  * @return  One of target_chip_t
+  */
+target_chip_t esp_loader_get_target(void);
+
+
+#ifdef SERIAL_FLASHER_INTERFACE_UART
+/**
+  * @brief Initiates flash operation
+  *
+  * @param offset[in]       Address from which flash operation will be performed.
+  * @param image_size[in]   Size of the whole binary to be loaded into flash.
+  * @param block_size[in]   Size of buffer used in subsequent calls to esp_loader_flash_write.
+  *
+  * @note  image_size is size of the whole image, whereas, block_size is chunk of data sent
+  *        to the target, each time esp_loader_flash_write function is called.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_flash_start(uint32_t offset, uint32_t image_size, uint32_t block_size);
+
+/**
+  * @brief Writes supplied data to target's flash memory.
+  *
+  * @param payload[in]      Data to be flashed into target's memory.
+  * @param size[in]         Size of payload in bytes.
+  *
+  * @note  size must not be greater that block_size supplied to previously called
+  *        esp_loader_flash_start function. If size is less than block_size,
+  *        remaining bytes of payload buffer will be padded with 0xff.
+  *        Therefore, size of payload buffer has to be equal or greater than block_size.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_flash_write(void *payload, uint32_t size);
+
+/**
+  * @brief Ends flash operation.
+  *
+  * @param reboot[in]       reboot the target if true.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_flash_finish(bool reboot);
+#endif /* SERIAL_FLASHER_INTERFACE_UART */
+
+
+/**
+  * @brief Initiates mem operation, initiates loading for program into target RAM
+  *
+  * @param offset[in]       Address from which mem operation will be performed.
+  * @param size[in]         Size of the whole binary to be loaded into mem.
+  * @param block_size[in]   Size of buffer used in subsequent calls to esp_loader_mem_write.
+  *
+  * @note  image_size is size of the whole image, whereas, block_size is chunk of data sent
+  *        to the target, each time esp_mem_flash_write function is called.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_mem_start(uint32_t offset, uint32_t size, uint32_t block_size);
+
+
+/**
+  * @brief Writes supplied data to target's mem memory.
+  *
+  * @param payload[in]      Data to be loaded into target's memory.
+  * @param size[in]         Size of data in bytes.
+  *
+  * @note  size must not be greater that block_size supplied to previously called
+  *        esp_loader_mem_start function.
+  *        Therefore, size of data buffer has to be equal or greater than block_size.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_mem_write(const void *payload, uint32_t size);
+
+
+/**
+  * @brief Ends mem operation, finish loading for program into target RAM
+  *        and send the entrypoint of ram_loadable app
+  *
+  * @param entrypoint[in]       entrypoint of ram program.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_mem_finish(uint32_t entrypoint);
+
+
+/**
+  * @brief Writes register.
+  *
+  * @param address[in]      Address of register.
+  * @param reg_value[in]    New register value.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_write_register(uint32_t address, uint32_t reg_value);
+
+/**
+  * @brief Reads register.
+  *
+  * @param address[in]      Address of register.
+  * @param reg_value[out]   Register value.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  */
+esp_loader_error_t esp_loader_read_register(uint32_t address, uint32_t *reg_value);
+
+/**
+  * @brief Change baud rate.
+  *
+  * @note  Baud rate has to be also adjusted accordingly on host MCU, as
+  *        target's baud rate is changed upon return from this function.
+  *
+  * @param transmission_rate[in]     new baud rate to be set.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  *     - ESP_LOADER_ERROR_UNSUPPORTED_FUNC Unsupported on the target
+  */
+esp_loader_error_t esp_loader_change_transmission_rate(uint32_t transmission_rate);
+
+/**
+  * @brief Verify target's flash integrity by checking MD5.
+  *        MD5 checksum is computed from data pushed to target's memory by calling
+  *        esp_loader_flash_write() function and compared against target's MD5.
+  *        Target computes checksum based on offset and image_size passed to
+  *        esp_loader_flash_start() function.
+  *
+  * @note  This function is only available if MD5_ENABLED is set.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_INVALID_MD5 MD5 does not match
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout
+  *     - ESP_LOADER_ERROR_INVALID_RESPONSE Internal error
+  *     - ESP_LOADER_ERROR_UNSUPPORTED_FUNC Unsupported on the target
+  */
+#if MD5_ENABLED
+esp_loader_error_t esp_loader_flash_verify(void);
+#endif
+/**
+  * @brief Toggles reset pin.
+  */
+void esp_loader_reset_target(void);
+
+
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/include/esp_loader_io.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/include/esp_loader_io.h
@@ -0,0 +1,112 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ #pragma once
+
+#include <stdint.h>
+#include "esp_loader.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+  * @brief Changes the transmission rate of the used peripheral.
+  */
+esp_loader_error_t loader_port_change_transmission_rate(uint32_t transmission_rate);
+
+/**
+  * @brief Writes data over the io interface.
+  *
+  * @param data[in]     Buffer with data to be written.
+  * @param size[in]     Size of data in bytes.
+  * @param timeout[in]  Timeout in milliseconds.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout elapsed
+  */
+esp_loader_error_t loader_port_write(const uint8_t *data, uint16_t size, uint32_t timeout);
+
+/**
+  * @brief Reads data from the io interface.
+  *
+  * @param data[out]    Buffer into which received data will be written.
+  * @param size[in]     Number of bytes to read.
+  * @param timeout[in]  Timeout in milliseconds.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_TIMEOUT Timeout elapsed
+  */
+esp_loader_error_t loader_port_read(uint8_t *data, uint16_t size, uint32_t timeout);
+
+/**
+  * @brief Delay in milliseconds.
+  *
+  * @param ms[in]   Number of milliseconds.
+  *
+  */
+void loader_port_delay_ms(uint32_t ms);
+
+/**
+  * @brief Starts timeout timer.
+  *
+  * @param ms[in]   Number of milliseconds.
+  *
+  */
+void loader_port_start_timer(uint32_t ms);
+
+/**
+  * @brief Returns remaining time since timer was started by calling esp_loader_start_timer.
+  *        0 if timer has elapsed.
+  *
+  * @return   Number of milliseconds.
+  *
+  */
+uint32_t loader_port_remaining_time(void);
+
+/**
+  * @brief Asserts bootstrap pins to enter boot mode and toggles reset pin.
+  *
+  * @note  Reset pin should stay asserted for at least 20 milliseconds.
+  */
+void loader_port_enter_bootloader(void);
+
+/**
+  * @brief Toggles reset pin.
+  *
+  * @note  Reset pin should stay asserted for at least 20 milliseconds.
+  */
+void loader_port_reset_target(void);
+
+/**
+  * @brief Function can be defined by user to print debug message.
+  *
+  * @note  Empty weak function is used, otherwise.
+  *
+  */
+void loader_port_debug_print(const char *str);
+
+#ifdef SERIAL_FLASHER_INTERFACE_SPI
+/**
+  * @brief Sets the chip select to a defined level
+  */
+void loader_port_spi_set_cs(uint32_t level);
+#endif /* SERIAL_FLASHER_INTERFACE_SPI */
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/include/serial_io.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/include/serial_io.h
@@ -0,0 +1,24 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#warning Please replace serial_io.h with esp_loader_io.h and change the function names \
+         to match the new API
+
+/* Defines used to avoid breaking existing ports */
+#define loader_port_change_baudrate loader_port_change_transmission_rate
+#define loader_port_serial_write loader_port_write
+#define loader_port_serial_read loader_port_read
+
+#include "esp_loader_io.h"
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_port.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_port.c
@@ -0,0 +1,181 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "esp32_port.h"
+#include "driver/uart.h"
+#include "driver/gpio.h"
+#include "esp_timer.h"
+#include "esp_log.h"
+#include "esp_idf_version.h"
+#include <unistd.h>
+
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+static void transfer_debug_print(const uint8_t *data, uint16_t size, bool write)
+{
+    static bool write_prev = false;
+
+    if (write_prev != write) {
+        write_prev = write;
+        printf("\n--- %s ---\n", write ? "WRITE" : "READ");
+    }
+
+    for (uint32_t i = 0; i < size; i++) {
+        printf("%02x ", data[i]);
+    }
+}
+#endif
+
+static int64_t s_time_end;
+static int32_t s_uart_port;
+static int32_t s_reset_trigger_pin;
+static int32_t s_gpio0_trigger_pin;
+
+esp_loader_error_t loader_port_esp32_init(const loader_esp32_config_t *config)
+{
+    s_uart_port = config->uart_port;
+    s_reset_trigger_pin = config->reset_trigger_pin;
+    s_gpio0_trigger_pin = config->gpio0_trigger_pin;
+
+    // Initialize UART
+    uart_config_t uart_config = {
+        .baud_rate = config->baud_rate,
+        .data_bits = UART_DATA_8_BITS,
+        .parity    = UART_PARITY_DISABLE,
+        .stop_bits = UART_STOP_BITS_1,
+        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
+        .source_clk = UART_SCLK_DEFAULT,
+#endif
+    };
+
+    int rx_buffer_size = config->rx_buffer_size ? config->rx_buffer_size : 400;
+    int tx_buffer_size = config->tx_buffer_size ? config->tx_buffer_size : 400;
+    QueueHandle_t *uart_queue = config->uart_queue ? config->uart_queue : NULL;
+    int queue_size = config->queue_size ? config->queue_size : 0;
+
+    if ( uart_param_config(s_uart_port, &uart_config) != ESP_OK ) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+    if ( uart_set_pin(s_uart_port, config->uart_tx_pin, config->uart_rx_pin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE) != ESP_OK ) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+    if ( uart_driver_install(s_uart_port, rx_buffer_size, tx_buffer_size, queue_size, uart_queue, 0) != ESP_OK ) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    // Initialize boot pin selection pins
+    gpio_reset_pin(s_reset_trigger_pin);
+    gpio_set_pull_mode(s_reset_trigger_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_reset_trigger_pin, GPIO_MODE_OUTPUT);
+
+    gpio_reset_pin(s_gpio0_trigger_pin);
+    gpio_set_pull_mode(s_gpio0_trigger_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_gpio0_trigger_pin, GPIO_MODE_OUTPUT);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+void loader_port_esp32_deinit(void)
+{
+    uart_driver_delete(s_uart_port);
+}
+
+
+esp_loader_error_t loader_port_write(const uint8_t *data, uint16_t size, uint32_t timeout)
+{
+    uart_write_bytes(s_uart_port, (const char *)data, size);
+    esp_err_t err = uart_wait_tx_done(s_uart_port, pdMS_TO_TICKS(timeout));
+
+    if (err == ESP_OK) {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, size, true);
+#endif
+        return ESP_LOADER_SUCCESS;
+    } else if (err == ESP_ERR_TIMEOUT) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+}
+
+
+esp_loader_error_t loader_port_read(uint8_t *data, uint16_t size, uint32_t timeout)
+{
+    int read = uart_read_bytes(s_uart_port, data, size, pdMS_TO_TICKS(timeout));
+
+    if (read < 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    } else if (read < size) {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, read, false);
+#endif
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, read, false);
+#endif
+        return ESP_LOADER_SUCCESS;
+    }
+}
+
+
+// Set GPIO0 LOW, then
+// assert reset pin for 50 milliseconds.
+void loader_port_enter_bootloader(void)
+{
+    gpio_set_level(s_gpio0_trigger_pin, 0);
+    loader_port_reset_target();
+    loader_port_delay_ms(SERIAL_FLASHER_BOOT_HOLD_TIME_MS);
+    gpio_set_level(s_gpio0_trigger_pin, 1);
+}
+
+
+void loader_port_reset_target(void)
+{
+    gpio_set_level(s_reset_trigger_pin, 0);
+    loader_port_delay_ms(SERIAL_FLASHER_RESET_HOLD_TIME_MS);
+    gpio_set_level(s_reset_trigger_pin, 1);
+}
+
+
+void loader_port_delay_ms(uint32_t ms)
+{
+    usleep(ms * 1000);
+}
+
+
+void loader_port_start_timer(uint32_t ms)
+{
+    s_time_end = esp_timer_get_time() + ms * 1000;
+}
+
+
+uint32_t loader_port_remaining_time(void)
+{
+    int64_t remaining = (s_time_end - esp_timer_get_time()) / 1000;
+    return (remaining > 0) ? (uint32_t)remaining : 0;
+}
+
+
+void loader_port_debug_print(const char *str)
+{
+    printf("DEBUG: %s\n", str);
+}
+
+esp_loader_error_t loader_port_change_transmission_rate(uint32_t baudrate)
+{
+    esp_err_t err = uart_set_baudrate(s_uart_port, baudrate);
+    return (err == ESP_OK) ? ESP_LOADER_SUCCESS : ESP_LOADER_ERROR_FAIL;
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_port.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_port.h
@@ -0,0 +1,59 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ #pragma once
+
+#include "esp_loader_io.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/queue.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct
+{
+  uint32_t baud_rate;     /*!< Initial baud rate, can be changed later */
+  uint32_t uart_port;     /*!< UART port */
+  uint32_t uart_rx_pin;   /*!< This pin will be configured as UART Rx pin */
+  uint32_t uart_tx_pin;   /*!< This pin will be configured as UART Tx pin */
+  uint32_t reset_trigger_pin; /*!< This pin will be used to reset target chip */
+  uint32_t gpio0_trigger_pin; /*!< This pin will be used to toggle set IO0 of target chip */
+  uint32_t rx_buffer_size;    /*!< Set to zero for default RX buffer size */
+  uint32_t tx_buffer_size;    /*!< Set to zero for default TX buffer size */
+  uint32_t queue_size;        /*!< Set to zero for default UART queue size */
+  QueueHandle_t *uart_queue;  /*!< Set to NULL, if UART queue handle is not
+                                   necessary. Otherwise, it will be assigned here */
+} loader_esp32_config_t;
+
+/**
+  * @brief Initializes serial interface.
+  *
+  * @param baud_rate[in]       Communication speed.
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_FAIL Initialization failure
+  */
+esp_loader_error_t loader_port_esp32_init(const loader_esp32_config_t *config);
+
+/**
+  * @brief Deinitialize serial interface.
+  */
+void loader_port_esp32_deinit(void);
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_spi_port.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_spi_port.c
@@ -0,0 +1,298 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "esp32_spi_port.h"
+#include "esp_log.h"
+#include "driver/gpio.h"
+#include "esp_timer.h"
+#include "esp_log.h"
+#include "esp_idf_version.h"
+#include <unistd.h>
+
+// #define SERIAL_DEBUG_ENABLE
+
+#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 3, 0)
+#define DMA_CHAN SPI_DMA_CH_AUTO
+#else
+#define DMA_CHAN 1
+#endif
+
+#define WORD_ALIGNED(ptr) ((size_t)ptr % sizeof(size_t) == 0)
+
+#ifdef SERIAL_DEBUG_ENABLE
+
+static void dec_to_hex_str(const uint8_t dec, uint8_t hex_str[3])
+{
+    static const uint8_t dec_to_hex[] = {
+        '0', '1', '2', '3', '4', '5', '6', '7',
+        '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
+    };
+
+    hex_str[0] = dec_to_hex[dec >> 4];
+    hex_str[1] = dec_to_hex[dec & 0xF];
+    hex_str[2] = '\0';
+}
+
+static void serial_debug_print(const uint8_t *data, uint16_t size, bool write)
+{
+    static bool write_prev = false;
+    uint8_t hex_str[3];
+
+    if(write_prev != write) {
+        write_prev = write;
+        printf("\n--- %s ---\n", write ? "WRITE" : "READ");
+    }
+
+    for(uint32_t i = 0; i < size; i++) {
+        dec_to_hex_str(data[i], hex_str);
+        printf("%s ", hex_str);
+    }
+}
+
+#else
+static void serial_debug_print(const uint8_t *data, uint16_t size, bool write) { }
+#endif
+
+static spi_host_device_t s_spi_bus;
+static spi_bus_config_t s_spi_config;
+static spi_device_handle_t s_device_h;
+static spi_device_interface_config_t s_device_config;
+static int64_t s_time_end;
+static uint32_t s_reset_trigger_pin;
+static uint32_t s_strap_bit0_pin;
+static uint32_t s_strap_bit1_pin;
+static uint32_t s_strap_bit2_pin;
+static uint32_t s_strap_bit3_pin;
+static uint32_t s_spi_cs_pin;
+
+esp_loader_error_t loader_port_esp32_spi_init(const loader_esp32_spi_config_t *config)
+{
+    /* Initialize the global static variables*/
+    s_spi_bus = config->spi_bus;
+    s_reset_trigger_pin = config->reset_trigger_pin;
+    s_strap_bit0_pin = config->strap_bit0_pin;
+    s_strap_bit1_pin = config->strap_bit1_pin;
+    s_strap_bit2_pin = config->strap_bit2_pin;
+    s_strap_bit3_pin = config->strap_bit3_pin;
+    s_spi_cs_pin = config->spi_cs_pin;
+
+    /* Configure and initialize the SPI bus*/
+    s_spi_config.mosi_io_num = config->spi_mosi_pin;
+    s_spi_config.miso_io_num = config->spi_miso_pin;
+    s_spi_config.sclk_io_num = config->spi_clk_pin;
+    s_spi_config.quadwp_io_num = config->spi_quadwp_pin;
+    s_spi_config.quadhd_io_num = config->spi_quadhd_pin;
+    s_spi_config.max_transfer_sz = 4096 * 4;
+
+    if (spi_bus_initialize(s_spi_bus, &s_spi_config, DMA_CHAN) != ESP_OK) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    /* Configure and add the device */
+    s_device_config.clock_speed_hz = config->frequency;
+    s_device_config.spics_io_num = -1; /* We're using the chip select pin as GPIO as we need to
+                                          chain multiple transactions with CS pulled down */
+    s_device_config.flags = SPI_DEVICE_HALFDUPLEX;
+    s_device_config.queue_size = 16;
+
+    if (spi_bus_add_device(s_spi_bus, &s_device_config, &s_device_h) != ESP_OK) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    /* Initialize the pins except for the strapping ones */
+    gpio_reset_pin(s_reset_trigger_pin);
+    gpio_set_pull_mode(s_reset_trigger_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_reset_trigger_pin, GPIO_MODE_OUTPUT);
+    gpio_set_level(s_reset_trigger_pin, 1);
+
+    gpio_reset_pin(s_spi_cs_pin);
+    gpio_set_pull_mode(s_spi_cs_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_spi_cs_pin, GPIO_MODE_OUTPUT);
+    gpio_set_level(s_spi_cs_pin, 1);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+void loader_port_esp32_spi_deinit(void)
+{
+    gpio_reset_pin(s_reset_trigger_pin);
+    gpio_reset_pin(s_spi_cs_pin);
+    spi_bus_remove_device(s_device_h);
+    spi_bus_free(s_spi_bus);
+}
+
+
+void loader_port_spi_set_cs(const uint32_t level) {
+    gpio_set_level(s_spi_cs_pin, level);
+}
+
+
+esp_loader_error_t loader_port_write(const uint8_t *data, const uint16_t size, const uint32_t timeout)
+{
+    /* Due to the fact that the SPI driver uses DMA for larger transfers,
+       and the DMA requirements, the buffer must be word aligned */
+    if (data == NULL || !WORD_ALIGNED(data)) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    serial_debug_print(data, size, true);
+
+    spi_transaction_t transaction = {
+        .tx_buffer = data,
+        .rx_buffer = NULL,
+        .length = size * 8U,
+        .rxlength = 0,
+    };
+
+    esp_err_t err = spi_device_transmit(s_device_h, &transaction);
+
+    if (err == ESP_OK) {
+        serial_debug_print(data, size, false);
+        return ESP_LOADER_SUCCESS;
+    } else if (err == ESP_ERR_TIMEOUT) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+}
+
+
+esp_loader_error_t loader_port_read(uint8_t *data, const uint16_t size, const uint32_t timeout)
+{
+    /* Due to the fact that the SPI driver uses DMA for larger transfers,
+       and the DMA requirements, the buffer must be word aligned */
+    if (data == NULL || !WORD_ALIGNED(data)) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    serial_debug_print(data, size, true);
+
+    spi_transaction_t transaction = {
+        .tx_buffer = NULL,
+        .rx_buffer = data,
+        .rxlength = size * 8,
+    };
+
+    esp_err_t err = spi_device_transmit(s_device_h, &transaction);
+
+    if (err == ESP_OK) {
+        serial_debug_print(data, size, false);
+        return ESP_LOADER_SUCCESS;
+    } else if (err == ESP_ERR_TIMEOUT) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+}
+
+
+void loader_port_enter_bootloader(void)
+{
+    /*
+        We have to initialize the GPIO pins for the target strapping pins here,
+        as they may overlap with target SPI pins.
+        For instance in the case of ESP32C3 MISO and strapping bit 0 pins overlap.
+    */
+    spi_bus_remove_device(s_device_h);
+    spi_bus_free(s_spi_bus);
+
+    gpio_reset_pin(s_strap_bit0_pin);
+    gpio_set_pull_mode(s_strap_bit0_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_strap_bit0_pin, GPIO_MODE_OUTPUT);
+
+    gpio_reset_pin(s_strap_bit1_pin);
+    gpio_set_pull_mode(s_strap_bit1_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_strap_bit1_pin, GPIO_MODE_OUTPUT);
+
+    gpio_reset_pin(s_strap_bit2_pin);
+    gpio_set_pull_mode(s_strap_bit2_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_strap_bit2_pin, GPIO_MODE_OUTPUT);
+
+    gpio_reset_pin(s_strap_bit3_pin);
+    gpio_set_pull_mode(s_strap_bit3_pin, GPIO_PULLUP_ONLY);
+    gpio_set_direction(s_strap_bit3_pin, GPIO_MODE_OUTPUT);
+
+    /* Set the strapping pins and perform the reset sequence */
+    gpio_set_level(s_strap_bit0_pin, 1);
+    gpio_set_level(s_strap_bit1_pin, 0);
+    gpio_set_level(s_strap_bit2_pin, 0);
+    gpio_set_level(s_strap_bit3_pin, 0);
+    loader_port_reset_target();
+    loader_port_delay_ms(SERIAL_FLASHER_BOOT_HOLD_TIME_MS);
+    gpio_set_level(s_strap_bit3_pin, 1);
+    gpio_set_level(s_strap_bit0_pin, 0);
+
+    /* Disable the strapping pins so they can be used by the slave later */
+    gpio_reset_pin(s_strap_bit0_pin);
+    gpio_reset_pin(s_strap_bit1_pin);
+    gpio_reset_pin(s_strap_bit2_pin);
+    gpio_reset_pin(s_strap_bit3_pin);
+
+    /* Restore the SPI bus pins */
+    spi_bus_initialize(s_spi_bus, &s_spi_config, DMA_CHAN);
+    spi_bus_add_device(s_spi_bus, &s_device_config, &s_device_h);
+}
+
+
+void loader_port_reset_target(void)
+{
+    gpio_set_level(s_reset_trigger_pin, 0);
+    loader_port_delay_ms(SERIAL_FLASHER_RESET_HOLD_TIME_MS);
+    gpio_set_level(s_reset_trigger_pin, 1);
+}
+
+
+void loader_port_delay_ms(const uint32_t ms)
+{
+    usleep(ms * 1000);
+}
+
+
+void loader_port_start_timer(const uint32_t ms)
+{
+    s_time_end = esp_timer_get_time() + ms * 1000;
+}
+
+
+uint32_t loader_port_remaining_time(void)
+{
+    int64_t remaining = (s_time_end - esp_timer_get_time()) / 1000;
+    return (remaining > 0) ? (uint32_t)remaining : 0;
+}
+
+
+void loader_port_debug_print(const char *str)
+{
+    printf("DEBUG: %s\n", str);
+}
+
+
+esp_loader_error_t loader_port_change_transmission_rate(const uint32_t frequency)
+{
+    if (spi_bus_remove_device(s_device_h) != ESP_OK) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    uint32_t old_frequency = s_device_config.clock_speed_hz;
+    s_device_config.clock_speed_hz = frequency;
+
+    if (spi_bus_add_device(s_spi_bus, &s_device_config, &s_device_h) != ESP_OK) {
+        s_device_config.clock_speed_hz = old_frequency;
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_spi_port.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/esp32_spi_port.h
@@ -0,0 +1,60 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ #pragma once
+
+#include "esp_loader_io.h"
+#include "driver/spi_master.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct
+{
+    spi_host_device_t spi_bus;
+    uint32_t frequency;
+    uint32_t spi_clk_pin;
+    uint32_t spi_miso_pin;
+    uint32_t spi_mosi_pin;
+    uint32_t spi_cs_pin;
+    uint32_t spi_quadwp_pin;
+    uint32_t spi_quadhd_pin;
+    uint32_t reset_trigger_pin;
+    uint32_t strap_bit0_pin;
+    uint32_t strap_bit1_pin;
+    uint32_t strap_bit2_pin;
+    uint32_t strap_bit3_pin;
+} loader_esp32_spi_config_t;
+
+/**
+  * @brief Initializes the SPI interface.
+  *
+  * @param config[in] Configuration structure
+  *
+  * @return
+  *     - ESP_LOADER_SUCCESS Success
+  *     - ESP_LOADER_ERROR_FAIL Initialization failure
+  */
+esp_loader_error_t loader_port_esp32_spi_init(const loader_esp32_spi_config_t *config);
+
+/**
+  * @brief Deinitializes the SPI interface.
+  */
+void loader_port_esp32_spi_deinit(void);
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/raspberry_port.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/raspberry_port.c
@@ -0,0 +1,302 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "esp_loader_io.h"
+#include "protocol.h"
+#include <pigpio.h>
+#include "raspberry_port.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <termios.h>
+#include <time.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+static void transfer_debug_print(const uint8_t *data, uint16_t size, bool write)
+{
+    static bool write_prev = false;
+
+    if (write_prev != write) {
+        write_prev = write;
+        printf("\n--- %s ---\n", write ? "WRITE" : "READ");
+    }
+
+    for (uint32_t i = 0; i < size; i++) {
+        printf("%02x ", data[i]);
+    }
+}
+#endif
+
+static int serial;
+static int64_t s_time_end;
+static int32_t s_reset_trigger_pin;
+static int32_t s_gpio0_trigger_pin;
+
+
+static speed_t convert_baudrate(int baud)
+{
+    switch (baud) {
+        case 50: return B50;
+        case 75: return B75;
+        case 110: return B110;
+        case 134: return B134;
+        case 150: return B150;
+        case 200: return B200;
+        case 300: return B300;
+        case 600: return B600;
+        case 1200: return B1200;
+        case 1800: return B1800;
+        case 2400: return B2400;
+        case 4800: return B4800;
+        case 9600: return B9600;
+        case 19200: return B19200;
+        case 38400: return B38400;
+        case 57600: return B57600;
+        case 115200: return B115200;
+        case 230400: return B230400;
+        case 460800: return B460800;
+        case 500000: return B500000;
+        case 576000: return B576000;
+        case 921600: return B921600;
+        case 1000000: return B1000000;
+        case 1152000: return B1152000;
+        case 1500000: return B1500000;
+        case 2000000: return B2000000;
+        case 2500000: return B2500000;
+        case 3000000: return B3000000;
+        case 3500000: return B3500000;
+        case 4000000: return B4000000;
+        default: return -1;
+    }
+}
+
+static int serialOpen (const char *device, uint32_t baudrate)
+{
+    struct termios options;
+    int status, fd;
+
+    if ((fd = open (device, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK)) == -1) {
+        printf("Error occured while opening serial port !\n");
+        return -1 ;
+    }
+
+    fcntl (fd, F_SETFL, O_RDWR) ;
+
+    // Get and modify current options:
+
+    tcgetattr (fd, &options);
+    speed_t baud = convert_baudrate(baudrate);
+
+    if(baud < 0) {
+        printf("Invalid baudrate!\n");
+        return -1;
+    }
+
+    cfmakeraw   (&options) ;
+    cfsetispeed (&options, baud) ;
+    cfsetospeed (&options, baud) ;
+
+    options.c_cflag |= (CLOCAL | CREAD) ;
+    options.c_cflag &= ~(PARENB | CSTOPB | CSIZE) ;
+    options.c_cflag |= CS8 ;
+    options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG) ;
+    options.c_oflag &= ~OPOST ;
+    options.c_iflag &= ~(IXON | IXOFF | IXANY); // Turn off s/w flow ctrl
+    options.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL); // Disable any special handling of received bytes
+
+    options.c_cc [VMIN]  = 0 ;
+    options.c_cc [VTIME] = 10 ; // 1 Second
+
+    tcsetattr (fd, TCSANOW, &options) ;
+
+    ioctl (fd, TIOCMGET, &status);
+
+    status |= TIOCM_DTR ;
+    status |= TIOCM_RTS ;
+
+    ioctl (fd, TIOCMSET, &status);
+
+    usleep (10000) ;  // 10mS
+
+    return fd ;
+}
+
+static esp_loader_error_t change_baudrate(int file_desc, int baudrate)
+{
+    struct termios options;
+    speed_t baud = convert_baudrate(baudrate);
+
+    if(baud < 0) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    tcgetattr (file_desc, &options);
+
+    cfmakeraw   (&options) ;
+    cfsetispeed (&options, baud);
+    cfsetospeed (&options, baud);
+
+    tcsetattr (file_desc, TCSANOW, &options);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+static void set_timeout(uint32_t timeout)
+{
+    struct termios options;
+
+    timeout /= 100;
+    timeout = MAX(timeout, 1);
+
+    tcgetattr(serial, &options);
+    options.c_cc[VTIME] = timeout;
+    tcsetattr(serial, TCSANOW, &options);
+}
+
+static esp_loader_error_t read_char(char *c, uint32_t timeout)
+{
+    set_timeout(timeout);
+    int read_bytes = read(serial, c, 1);
+
+    if (read_bytes == 1) {
+        return ESP_LOADER_SUCCESS;
+    } else if (read_bytes == 0) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+}
+
+static esp_loader_error_t read_data(char *buffer, uint32_t size)
+{
+    for (int i = 0; i < size; i++) {
+        uint32_t remaining_time = loader_port_remaining_time();
+        RETURN_ON_ERROR( read_char(&buffer[i], remaining_time) );
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+esp_loader_error_t loader_port_raspberry_init(const loader_raspberry_config_t *config)
+{
+    s_reset_trigger_pin = config->reset_trigger_pin;
+    s_gpio0_trigger_pin = config->gpio0_trigger_pin;
+
+    serial = serialOpen(config->device, config->baudrate);
+    if (serial < 0) {
+        printf("Serial port could not be opened!\n");
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    if (gpioInitialise() < 0) {
+        printf("pigpio initialisation failed\n");
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    gpioSetMode(config->reset_trigger_pin, PI_OUTPUT);
+    gpioSetMode(config->gpio0_trigger_pin, PI_OUTPUT);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+esp_loader_error_t loader_port_write(const uint8_t *data, uint16_t size, uint32_t timeout)
+{
+    int written = write(serial, data, size);
+
+    if (written < 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    } else if (written < size) {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, written, true);
+#endif
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, written, true);
+#endif
+        return ESP_LOADER_SUCCESS;
+    }
+}
+
+
+esp_loader_error_t loader_port_read(uint8_t *data, uint16_t size, uint32_t timeout)
+{
+    RETURN_ON_ERROR( read_data(data, size) );
+
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+    transfer_debug_print(data, size, false);
+#endif
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+// Set GPIO0 LOW, then assert reset pin for 50 milliseconds.
+void loader_port_enter_bootloader(void)
+{
+    gpioWrite(s_gpio0_trigger_pin, 0);
+    loader_port_reset_target();
+    loader_port_delay_ms(SERIAL_FLASHER_BOOT_HOLD_TIME_MS);
+    gpioWrite(s_gpio0_trigger_pin, 1);
+}
+
+
+void loader_port_reset_target(void)
+{
+    gpioWrite(s_reset_trigger_pin, 0);
+    loader_port_delay_ms(SERIAL_FLASHER_RESET_HOLD_TIME_MS);
+    gpioWrite(s_reset_trigger_pin, 1);
+}
+
+
+void loader_port_delay_ms(uint32_t ms)
+{
+    usleep(ms * 1000);
+}
+
+
+void loader_port_start_timer(uint32_t ms)
+{
+    s_time_end = clock() + (ms * (CLOCKS_PER_SEC / 1000));
+}
+
+
+uint32_t loader_port_remaining_time(void)
+{
+    int64_t remaining = (s_time_end - clock()) / 1000;
+    return (remaining > 0) ? (uint32_t)remaining : 0;
+}
+
+
+void loader_port_debug_print(const char *str)
+{
+    printf("DEBUG: %s\n", str);
+}
+
+esp_loader_error_t loader_port_change_transmission_rate(uint32_t baudrate)
+{
+    return change_baudrate(serial, baudrate);
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/raspberry_port.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/raspberry_port.h
@@ -0,0 +1,36 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "esp_loader_io.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    const char *device;
+    uint32_t baudrate;
+    uint32_t reset_trigger_pin;
+    uint32_t gpio0_trigger_pin;
+} loader_raspberry_config_t;
+
+esp_loader_error_t loader_port_raspberry_init(const loader_raspberry_config_t *config);
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/stm32_port.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/stm32_port.c
@@ -0,0 +1,140 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <sys/param.h>
+#include <stdio.h>
+#include "stm32_port.h"
+
+static UART_HandleTypeDef *uart;
+static GPIO_TypeDef* gpio_port_io0, *gpio_port_rst;
+static uint16_t gpio_num_io0, gpio_num_rst;
+
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+static void transfer_debug_print(const uint8_t *data, uint16_t size, bool write)
+{
+    static bool write_prev = false;
+
+    if (write_prev != write) {
+        write_prev = write;
+        printf("\n--- %s ---\n", write ? "WRITE" : "READ");
+    }
+
+    for (uint32_t i = 0; i < size; i++) {
+        printf("%02x ", data[i]);
+    }
+}
+#endif
+
+static uint32_t s_time_end;
+
+esp_loader_error_t loader_port_write(const uint8_t *data, uint16_t size, uint32_t timeout)
+{
+    HAL_StatusTypeDef err = HAL_UART_Transmit(uart, (uint8_t *)data, size, timeout);
+
+    if (err == HAL_OK) {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, size, true);
+#endif
+        return ESP_LOADER_SUCCESS;
+    } else if (err == HAL_TIMEOUT) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+}
+
+
+esp_loader_error_t loader_port_read(uint8_t *data, uint16_t size, uint32_t timeout)
+{
+    HAL_StatusTypeDef err = HAL_UART_Receive(uart, data, size, timeout);
+
+    if (err == HAL_OK) {
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, size, false);
+#endif
+        return ESP_LOADER_SUCCESS;
+    } else if (err == HAL_TIMEOUT) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    } else {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+}
+
+void loader_port_stm32_init(loader_stm32_config_t *config)
+
+{
+    uart = config->huart;
+    gpio_port_io0 = config->port_io0;
+    gpio_port_rst = config->port_rst;
+    gpio_num_io0 = config->pin_num_io0;
+    gpio_num_rst = config->pin_num_rst;
+}
+
+// Set GPIO0 LOW, then
+// assert reset pin for 100 milliseconds.
+void loader_port_enter_bootloader(void)
+{
+    HAL_GPIO_WritePin(gpio_port_io0, gpio_num_io0, GPIO_PIN_RESET);
+    loader_port_reset_target();
+    HAL_Delay(SERIAL_FLASHER_BOOT_HOLD_TIME_MS);
+    HAL_GPIO_WritePin(gpio_port_io0, gpio_num_io0, GPIO_PIN_SET);
+}
+
+
+void loader_port_reset_target(void)
+{
+    HAL_GPIO_WritePin(gpio_port_rst, gpio_num_rst, GPIO_PIN_RESET);
+    HAL_Delay(SERIAL_FLASHER_RESET_HOLD_TIME_MS);
+    HAL_GPIO_WritePin(gpio_port_rst, gpio_num_rst, GPIO_PIN_SET);
+}
+
+
+void loader_port_delay_ms(uint32_t ms)
+{
+    HAL_Delay(ms);
+}
+
+
+void loader_port_start_timer(uint32_t ms)
+{
+    s_time_end = HAL_GetTick() + ms;
+}
+
+
+uint32_t loader_port_remaining_time(void)
+{
+    int32_t remaining = s_time_end - HAL_GetTick();
+    return (remaining > 0) ? (uint32_t)remaining : 0;
+}
+
+
+void loader_port_debug_print(const char *str)
+{
+    printf("DEBUG: %s", str);
+}
+
+esp_loader_error_t loader_port_change_transmission_rate(uint32_t baudrate)
+{
+    uart->Init.BaudRate = baudrate;
+
+    if( HAL_UART_Init(uart) != HAL_OK ) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/stm32_port.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/stm32_port.h
@@ -0,0 +1,38 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "esp_loader_io.h"
+#include "stm32f4xx_hal.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    UART_HandleTypeDef *huart;
+    GPIO_TypeDef *port_io0;
+    uint16_t pin_num_io0;
+    GPIO_TypeDef *port_rst;
+    uint16_t pin_num_rst;
+} loader_stm32_config_t;
+
+void loader_port_stm32_init(loader_stm32_config_t *config);
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/zephyr_port.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/zephyr_port.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright (c) 2022 KT-Elektronik, Klaucke und Partner GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "zephyr_port.h"
+#include <zephyr/drivers/uart.h>
+#include <zephyr/console/tty.h>
+
+static const struct device *uart_dev;
+static struct gpio_dt_spec enable_spec;
+static struct gpio_dt_spec boot_spec;
+
+static struct tty_serial tty;
+static char tty_rx_buf[CONFIG_ESP_SERIAL_FLASHER_UART_BUFSIZE];
+static char tty_tx_buf[CONFIG_ESP_SERIAL_FLASHER_UART_BUFSIZE];
+
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+static void transfer_debug_print(const uint8_t *data, uint16_t size, bool write)
+{
+    static bool write_prev = false;
+
+    if (write_prev != write) {
+        write_prev = write;
+        printk("\n--- %s ---\n", write ? "WRITE" : "READ");
+    }
+
+    for (uint32_t i = 0; i < size; i++) {
+        printk("%02x ", data[i]);
+    }
+}
+#endif
+
+esp_loader_error_t configure_tty()
+{
+    if (tty_init(&tty, uart_dev) < 0 ||
+        tty_set_rx_buf(&tty, tty_rx_buf, sizeof(tty_rx_buf)) < 0 ||
+        tty_set_tx_buf(&tty, tty_tx_buf, sizeof(tty_tx_buf)) < 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+esp_loader_error_t loader_port_read(uint8_t *data, const uint16_t size, const uint32_t timeout)
+{
+    if (!device_is_ready(uart_dev) || data == NULL || size == 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    ssize_t total_read = 0;
+    ssize_t remaining = size;
+
+    tty_set_rx_timeout(&tty, timeout);
+    while (remaining > 0) {
+        const uint16_t chunk_size = remaining < CONFIG_ESP_SERIAL_FLASHER_UART_BUFSIZE ?
+            remaining : CONFIG_ESP_SERIAL_FLASHER_UART_BUFSIZE;
+        ssize_t read = tty_read(&tty, &data[total_read], chunk_size);
+        if (read < 0) {
+            return ESP_LOADER_ERROR_TIMEOUT;
+        }
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, read, false);
+#endif
+        total_read += read;
+        remaining -= read;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+esp_loader_error_t loader_port_write(const uint8_t *data, const uint16_t size, const uint32_t timeout)
+{
+    if (!device_is_ready(uart_dev) || data == NULL || size == 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    ssize_t total_written = 0;
+    ssize_t remaining = size;
+
+    tty_set_tx_timeout(&tty, timeout);
+    while (remaining > 0) {
+        const uint16_t chunk_size = remaining < CONFIG_ESP_SERIAL_FLASHER_UART_BUFSIZE ?
+            remaining : CONFIG_ESP_SERIAL_FLASHER_UART_BUFSIZE;
+        ssize_t written = tty_write(&tty, &data[total_written], chunk_size);
+        if (written < 0) {
+            return ESP_LOADER_ERROR_TIMEOUT;
+        }
+#ifdef SERIAL_FLASHER_DEBUG_TRACE
+        transfer_debug_print(data, written, true);
+#endif
+        total_written += written;
+        remaining -= written;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+esp_loader_error_t loader_port_zephyr_init(const loader_zephyr_config_t *config)
+{
+    uart_dev = config->uart_dev;
+    enable_spec = config->enable_spec;
+    boot_spec = config->boot_spec;
+    return configure_tty();
+}
+
+void loader_port_reset_target(void)
+{
+    gpio_pin_set_dt(&enable_spec, false);
+    loader_port_delay_ms(CONFIG_SERIAL_FLASHER_RESET_HOLD_TIME_MS);
+    gpio_pin_set_dt(&enable_spec, true);
+}
+
+void loader_port_enter_bootloader(void)
+{
+    gpio_pin_set_dt(&boot_spec, false);
+    loader_port_reset_target();
+    loader_port_delay_ms(CONFIG_SERIAL_FLASHER_BOOT_HOLD_TIME_MS);
+    gpio_pin_set_dt(&boot_spec, true);
+}
+
+void loader_port_delay_ms(uint32_t ms)
+{
+    k_msleep(ms);
+}
+
+static uint64_t s_time_end;
+
+void loader_port_start_timer(uint32_t ms)
+{
+    s_time_end = sys_clock_timeout_end_calc(Z_TIMEOUT_MS(ms));
+}
+
+uint32_t loader_port_remaining_time(void)
+{
+    int64_t remaining = k_ticks_to_ms_floor64(s_time_end - k_uptime_ticks());
+    return (remaining > 0) ? (uint32_t)remaining : 0;
+}
+
+esp_loader_error_t loader_port_change_transmission_rate(uint32_t baudrate)
+{
+    struct uart_config uart_config;
+
+    if (!device_is_ready(uart_dev)) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    if (uart_config_get(uart_dev, &uart_config) != 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+    uart_config.baudrate = baudrate;
+
+    if (uart_configure(uart_dev, &uart_config) != 0) {
+        return ESP_LOADER_ERROR_FAIL;
+    }
+
+    /* bitrate-change can require tty re-configuration */
+    return configure_tty();
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/port/zephyr_port.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/port/zephyr_port.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2022 KT-Elektronik, Klaucke und Partner GmbH
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "esp_loader_io.h"
+#include <zephyr/kernel.h>
+#include <zephyr/drivers/gpio.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    const struct device *uart_dev;
+    const struct gpio_dt_spec enable_spec;
+    const struct gpio_dt_spec boot_spec;
+} loader_zephyr_config_t;
+
+esp_loader_error_t loader_port_zephyr_init(const loader_zephyr_config_t *config);
+
+#ifdef __cplusplus
+}
+#endif
+
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/esp_targets.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/esp_targets.h
@@ -0,0 +1,33 @@
+/* Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "esp_loader.h"
+
+typedef struct {
+    uint32_t cmd;
+    uint32_t usr;
+    uint32_t usr1;
+    uint32_t usr2;
+    uint32_t w0;
+    uint32_t mosi_dlen;
+    uint32_t miso_dlen;
+} target_registers_t;
+
+esp_loader_error_t loader_detect_chip(target_chip_t *target, const target_registers_t **regs);
+esp_loader_error_t loader_read_spi_config(target_chip_t target_chip, uint32_t *spi_config);
+bool encryption_in_begin_flash_cmd(target_chip_t target);
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/md5_hash.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/md5_hash.h
@@ -0,0 +1,28 @@
+/*
+ * MD5 hash implementation and interface functions
+ * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+struct MD5Context {
+	uint32_t buf[4];
+	uint32_t bits[2];
+	uint8_t in[64];
+};
+
+void MD5Init(struct MD5Context *context);
+void MD5Update(struct MD5Context *context, unsigned char const *buf, unsigned len);
+void MD5Final(unsigned char digest[16], struct MD5Context *context);
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/protocol.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/protocol.h
@@ -0,0 +1,230 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "esp_loader.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define STATUS_FAILURE  1
+#define STATUS_SUCCESS  0
+
+#define READ_DIRECTION  1
+#define WRITE_DIRECTION 0
+
+#define MD5_SIZE 32
+
+typedef enum __attribute__((packed))
+{
+    FLASH_BEGIN = 0x02,
+    FLASH_DATA  = 0x03,
+    FLASH_END   = 0x04,
+    MEM_BEGIN   = 0x05,
+    MEM_END     = 0x06,
+    MEM_DATA    = 0x07,
+    SYNC        = 0x08,
+    WRITE_REG   = 0x09,
+    READ_REG    = 0x0a,
+
+    SPI_SET_PARAMS   = 0x0b,
+    SPI_ATTACH       = 0x0d,
+    CHANGE_BAUDRATE  = 0x0f,
+    FLASH_DEFL_BEGIN = 0x10,
+    FLASH_DEFL_DATA  = 0x11,
+    FLASH_DEFL_END   = 0x12,
+    SPI_FLASH_MD5    = 0x13,
+} command_t;
+
+typedef enum __attribute__((packed))
+{
+    RESPONSE_OK     = 0x00,
+    INVALID_COMMAND = 0x05, // parameters or length field is invalid
+    COMMAND_FAILED  = 0x06, // Failed to act on received message
+    INVALID_CRC     = 0x07, // Invalid CRC in message
+    FLASH_WRITE_ERR = 0x08, // After writing a block of data to flash, the ROM loader reads the value back and the 8-bit CRC is compared to the data read from flash. If they don't match, this error is returned.
+    FLASH_READ_ERR  = 0x09, // SPI read failed
+    READ_LENGTH_ERR = 0x0a, // SPI read request length is too long
+    DEFLATE_ERROR   = 0x0b, // ESP32 compressed uploads only
+} error_code_t;
+
+typedef struct __attribute__((packed))
+{
+    uint8_t direction;
+    uint8_t command;    // One of command_t
+    uint16_t size;
+    uint32_t checksum;
+} command_common_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t erase_size;
+    uint32_t packet_count;
+    uint32_t packet_size;
+    uint32_t offset;
+    uint32_t encrypted;
+} flash_begin_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t data_size;
+    uint32_t sequence_number;
+    uint32_t zero_0;
+    uint32_t zero_1;
+} data_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t stay_in_loader;
+} flash_end_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t total_size;
+    uint32_t blocks;
+    uint32_t block_size;
+    uint32_t offset;
+} mem_begin_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t stay_in_loader;
+    uint32_t entry_point_address;
+} mem_end_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint8_t sync_sequence[36];
+} sync_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t address;
+    uint32_t value;
+    uint32_t mask;
+    uint32_t delay_us;
+} write_reg_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t address;
+} read_reg_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t configuration;
+    uint32_t zero; // ESP32 ROM only
+} spi_attach_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t new_baudrate;
+    uint32_t old_baudrate;
+} change_baudrate_command_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t address;
+    uint32_t size;
+    uint32_t reserved_0;
+    uint32_t reserved_1;
+} spi_flash_md5_command_t;
+
+typedef struct __attribute__((packed))
+{
+    uint8_t direction;
+    uint8_t command;    // One of command_t
+    uint16_t size;
+    uint32_t value;
+} common_response_t;
+
+typedef struct __attribute__((packed))
+{
+    uint8_t failed;
+    uint8_t error;
+} response_status_t;
+
+typedef struct __attribute__((packed))
+{
+    common_response_t common;
+    response_status_t status;
+} response_t;
+
+typedef struct __attribute__((packed))
+{
+    common_response_t common;
+    uint8_t md5[MD5_SIZE];     // ROM only
+    response_status_t status;
+} rom_md5_response_t;
+
+typedef struct __attribute__((packed))
+{
+    command_common_t common;
+    uint32_t id;
+    uint32_t total_size;
+    uint32_t block_size;
+    uint32_t sector_size;
+    uint32_t page_size;
+    uint32_t status_mask;
+} write_spi_command_t;
+
+esp_loader_error_t loader_initialize_conn(esp_loader_connect_args_t *connect_args);
+
+#ifdef SERIAL_FLASHER_INTERFACE_UART
+esp_loader_error_t loader_flash_begin_cmd(uint32_t offset, uint32_t erase_size, uint32_t block_size, uint32_t blocks_to_write, bool encryption);
+
+esp_loader_error_t loader_flash_data_cmd(const uint8_t *data, uint32_t size);
+
+esp_loader_error_t loader_flash_end_cmd(bool stay_in_loader);
+
+esp_loader_error_t loader_sync_cmd(void);
+
+esp_loader_error_t loader_spi_attach_cmd(uint32_t config);
+
+esp_loader_error_t loader_md5_cmd(uint32_t address, uint32_t size, uint8_t *md5_out);
+
+esp_loader_error_t loader_spi_parameters(uint32_t total_size);
+#endif /* SERIAL_FLASHER_INTERFACE_UART */
+
+esp_loader_error_t loader_mem_begin_cmd(uint32_t offset, uint32_t size, uint32_t blocks_to_write, uint32_t block_size);
+
+esp_loader_error_t loader_mem_data_cmd(const uint8_t *data, uint32_t size);
+
+esp_loader_error_t loader_mem_end_cmd(uint32_t entrypoint);
+
+esp_loader_error_t loader_write_reg_cmd(uint32_t address, uint32_t value, uint32_t mask, uint32_t delay_us);
+
+esp_loader_error_t loader_read_reg_cmd(uint32_t address, uint32_t *reg);
+
+esp_loader_error_t loader_change_baudrate_cmd(uint32_t baudrate);
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/protocol_prv.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/protocol_prv.h
@@ -0,0 +1,31 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include "esp_loader.h"
+#include "protocol.h"
+
+void log_loader_internal_error(error_code_t error);
+
+esp_loader_error_t send_cmd(const void *cmd_data, uint32_t size, uint32_t *reg_value);
+
+esp_loader_error_t send_cmd_with_data(const void *cmd_data, size_t cmd_size,
+                                      const void *data, size_t data_size);
+
+esp_loader_error_t send_cmd_md5(const void *cmd_data, size_t cmd_size, uint8_t md5_out[MD5_SIZE]);
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/slip.h
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/private_include/slip.h
@@ -0,0 +1,28 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "esp_loader.h"
+#include <stdint.h>
+#include <stdlib.h>
+
+esp_loader_error_t SLIP_receive_data(uint8_t *buff, size_t size);
+
+esp_loader_error_t SLIP_receive_packet(uint8_t *buff, size_t size);
+
+esp_loader_error_t SLIP_send(const uint8_t *data, size_t size);
+
+esp_loader_error_t SLIP_send_delimiter(void);
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/esp_loader.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/esp_loader.c
@@ -0,0 +1,415 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "protocol.h"
+#include "esp_loader_io.h"
+#include "esp_loader.h"
+#include "esp_targets.h"
+#include "md5_hash.h"
+#include <string.h>
+#include <assert.h>
+
+#ifndef MAX
+#define MAX(a, b) ((a) > (b)) ? (a) : (b)
+#endif
+
+#ifndef MIN
+#define MIN(a, b) ((a) < (b)) ? (a) : (b)
+#endif
+
+#ifndef ROUNDUP
+#define ROUNDUP(a, b) (((int)a + (int)b - 1) / (int)b)
+#endif
+
+static const uint32_t DEFAULT_TIMEOUT = 1000;
+static const uint32_t DEFAULT_FLASH_TIMEOUT = 3000;       // timeout for most flash operations
+static const uint32_t LOAD_RAM_TIMEOUT_PER_MB = 2000000; // timeout (per megabyte) for erasing a region
+
+typedef enum {
+    SPI_FLASH_READ_ID = 0x9F
+} spi_flash_cmd_t;
+
+static const target_registers_t *s_reg = NULL;
+static target_chip_t s_target = ESP_UNKNOWN_CHIP;
+
+#if MD5_ENABLED
+
+static const uint32_t MD5_TIMEOUT_PER_MB = 800;
+static struct MD5Context s_md5_context;
+static uint32_t s_start_address;
+static uint32_t s_image_size;
+
+static inline void init_md5(uint32_t address, uint32_t size)
+{
+    s_start_address = address;
+    s_image_size = size;
+    MD5Init(&s_md5_context);
+}
+
+static inline void md5_update(const uint8_t *data, uint32_t size)
+{
+    MD5Update(&s_md5_context, data, size);
+}
+
+static inline void md5_final(uint8_t digets[16])
+{
+    MD5Final(digets, &s_md5_context);
+}
+
+#else
+
+static inline void init_md5(uint32_t address, uint32_t size) { }
+static inline void md5_update(const uint8_t *data, uint32_t size) { }
+static inline void md5_final(uint8_t digets[16]) { }
+
+#endif
+
+
+static uint32_t timeout_per_mb(uint32_t size_bytes, uint32_t time_per_mb)
+{
+    uint32_t timeout = time_per_mb * (size_bytes / 1e6);
+    return MAX(timeout, DEFAULT_FLASH_TIMEOUT);
+}
+
+esp_loader_error_t esp_loader_connect(esp_loader_connect_args_t *connect_args)
+{
+    loader_port_enter_bootloader();
+
+    RETURN_ON_ERROR(loader_initialize_conn(connect_args));
+
+    RETURN_ON_ERROR(loader_detect_chip(&s_target, &s_reg));
+
+#ifdef SERIAL_FLASHER_INTERFACE_UART
+    esp_loader_error_t err;
+    uint32_t spi_config;
+    if (s_target == ESP8266_CHIP) {
+        err = loader_flash_begin_cmd(0, 0, 0, 0, s_target);
+    } else {
+        RETURN_ON_ERROR( loader_read_spi_config(s_target, &spi_config) );
+        loader_port_start_timer(DEFAULT_TIMEOUT);
+        err = loader_spi_attach_cmd(spi_config);
+    }
+    return err;
+#endif /* SERIAL_FLASHER_INTERFACE_UART */
+    return ESP_LOADER_SUCCESS;
+}
+
+target_chip_t esp_loader_get_target(void)
+{
+    return s_target;
+}
+
+#ifdef SERIAL_FLASHER_INTERFACE_UART
+static uint32_t s_flash_write_size = 0;
+
+static esp_loader_error_t spi_set_data_lengths(size_t mosi_bits, size_t miso_bits)
+{
+    if (mosi_bits > 0) {
+        RETURN_ON_ERROR( esp_loader_write_register(s_reg->mosi_dlen, mosi_bits - 1) );
+    }
+    if (miso_bits > 0) {
+        RETURN_ON_ERROR( esp_loader_write_register(s_reg->miso_dlen, miso_bits - 1) );
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+static esp_loader_error_t spi_set_data_lengths_8266(size_t mosi_bits, size_t miso_bits)
+{
+    uint32_t mosi_mask = (mosi_bits == 0) ? 0 : mosi_bits - 1;
+    uint32_t miso_mask = (miso_bits == 0) ? 0 : miso_bits - 1;
+    return esp_loader_write_register(s_reg->usr1, (miso_mask << 8) | (mosi_mask << 17));
+}
+
+static esp_loader_error_t spi_flash_command(spi_flash_cmd_t cmd, void *data_tx, size_t tx_size, void *data_rx, size_t rx_size)
+{
+    assert(rx_size <= 32); // Reading more than 32 bits back from a SPI flash operation is unsupported
+    assert(tx_size <= 64); // Writing more than 64 bytes of data with one SPI command is unsupported
+
+    uint32_t SPI_USR_CMD  = (1 << 31);
+    uint32_t SPI_USR_MISO = (1 << 28);
+    uint32_t SPI_USR_MOSI = (1 << 27);
+    uint32_t SPI_CMD_USR  = (1 << 18);
+    uint32_t CMD_LEN_SHIFT = 28;
+
+    // Save SPI configuration
+    uint32_t old_spi_usr;
+    uint32_t old_spi_usr2;
+    RETURN_ON_ERROR( esp_loader_read_register(s_reg->usr, &old_spi_usr) );
+    RETURN_ON_ERROR( esp_loader_read_register(s_reg->usr2, &old_spi_usr2) );
+
+    if (s_target == ESP8266_CHIP) {
+        RETURN_ON_ERROR( spi_set_data_lengths_8266(tx_size, rx_size) );
+    } else {
+        RETURN_ON_ERROR( spi_set_data_lengths(tx_size, rx_size) );
+    }
+
+    uint32_t usr_reg_2 = (7 << CMD_LEN_SHIFT) | cmd;
+    uint32_t usr_reg = SPI_USR_CMD;
+    if (rx_size > 0) {
+        usr_reg |= SPI_USR_MISO;
+    }
+    if (tx_size > 0) {
+        usr_reg |= SPI_USR_MOSI;
+    }
+
+    RETURN_ON_ERROR( esp_loader_write_register(s_reg->usr, usr_reg) );
+    RETURN_ON_ERROR( esp_loader_write_register(s_reg->usr2, usr_reg_2 ) );
+
+    if (tx_size == 0) {
+        // clear data register before we read it
+        RETURN_ON_ERROR( esp_loader_write_register(s_reg->w0, 0) );
+    } else {
+        uint32_t *data = (uint32_t *)data_tx;
+        uint32_t words_to_write = (tx_size + 31) / (8 * 4);
+        uint32_t data_reg_addr = s_reg->w0;
+
+        while (words_to_write--) {
+            uint32_t word = *data++;
+            RETURN_ON_ERROR( esp_loader_write_register(data_reg_addr, word) );
+            data_reg_addr += 4;
+        }
+    }
+
+    RETURN_ON_ERROR( esp_loader_write_register(s_reg->cmd, SPI_CMD_USR) );
+
+    uint32_t trials = 10;
+    while (trials--) {
+        uint32_t cmd_reg;
+        RETURN_ON_ERROR( esp_loader_read_register(s_reg->cmd, &cmd_reg) );
+        if ((cmd_reg & SPI_CMD_USR) == 0) {
+            break;
+        }
+    }
+
+    if (trials == 0) {
+        return ESP_LOADER_ERROR_TIMEOUT;
+    }
+
+    RETURN_ON_ERROR( esp_loader_read_register(s_reg->w0, data_rx) );
+
+    // Restore SPI configuration
+    RETURN_ON_ERROR( esp_loader_write_register(s_reg->usr, old_spi_usr) );
+    RETURN_ON_ERROR( esp_loader_write_register(s_reg->usr2, old_spi_usr2) );
+
+    return ESP_LOADER_SUCCESS;
+}
+
+static esp_loader_error_t detect_flash_size(size_t *flash_size)
+{
+    uint32_t flash_id = 0;
+
+    RETURN_ON_ERROR( spi_flash_command(SPI_FLASH_READ_ID, NULL, 0, &flash_id, 24) );
+    uint32_t size_id = flash_id >> 16;
+
+    if (size_id < 0x12 || size_id > 0x18) {
+        return ESP_LOADER_ERROR_UNSUPPORTED_CHIP;
+    }
+
+    *flash_size = 1 << size_id;
+
+    return ESP_LOADER_SUCCESS;
+}
+
+static uint32_t calc_erase_size(const target_chip_t target, const uint32_t offset,
+                                const uint32_t image_size)
+{
+    if (target != ESP8266_CHIP) {
+        return image_size;
+    } else {
+        /* Needed to fix a bug in the ESP8266 ROM */
+        const uint32_t sectors_per_block = 16U;
+        const uint32_t sector_size = 4096U;
+
+        const uint32_t num_sectors = (image_size + sector_size - 1) / sector_size;
+        const uint32_t start_sector = offset / sector_size;
+
+        uint32_t head_sectors = sectors_per_block - (start_sector % sectors_per_block);
+
+        /* The ROM bug deletes extra num_sectors if we don't cross the block boundary
+           and extra head_sectors if we do */
+        if (num_sectors <= head_sectors) {
+            return ((num_sectors + 1) / 2) * sector_size;
+        } else {
+            return (num_sectors - head_sectors) * sector_size;
+        }
+    }
+}
+
+esp_loader_error_t esp_loader_flash_start(uint32_t offset, uint32_t image_size, uint32_t block_size)
+{
+    s_flash_write_size = block_size;
+
+    size_t flash_size = 0;
+    if (detect_flash_size(&flash_size) == ESP_LOADER_SUCCESS) {
+        if (image_size > flash_size) {
+            return ESP_LOADER_ERROR_IMAGE_SIZE;
+        }
+        loader_port_start_timer(DEFAULT_TIMEOUT);
+        RETURN_ON_ERROR( loader_spi_parameters(flash_size) );
+    } else {
+        loader_port_debug_print("Flash size detection failed, falling back to default");
+    }
+
+    init_md5(offset, image_size);
+
+    bool encryption_in_cmd = encryption_in_begin_flash_cmd(s_target);
+    const uint32_t erase_size = calc_erase_size(esp_loader_get_target(), offset, image_size);
+    const uint32_t blocks_to_write = (image_size + block_size - 1) / block_size;
+
+    const uint32_t erase_region_timeout_per_mb = 10000;
+    loader_port_start_timer(timeout_per_mb(erase_size, erase_region_timeout_per_mb));
+    return loader_flash_begin_cmd(offset, erase_size, block_size, blocks_to_write, encryption_in_cmd);
+}
+
+
+esp_loader_error_t esp_loader_flash_write(void *payload, uint32_t size)
+{
+    uint32_t padding_bytes = s_flash_write_size - size;
+    uint8_t *data = (uint8_t *)payload;
+    uint32_t padding_index = size;
+
+    if (size > s_flash_write_size) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    const uint8_t padding_pattern = 0xFF;
+    while (padding_bytes--) {
+        data[padding_index++] = padding_pattern;
+    }
+
+    md5_update(payload, (size + 3) & ~3);
+
+    loader_port_start_timer(DEFAULT_TIMEOUT);
+
+    return loader_flash_data_cmd(data, s_flash_write_size);
+}
+
+
+esp_loader_error_t esp_loader_flash_finish(bool reboot)
+{
+    loader_port_start_timer(DEFAULT_TIMEOUT);
+
+    return loader_flash_end_cmd(!reboot);
+}
+#endif /* SERIAL_FLASHER_INTERFACE_UART */
+
+esp_loader_error_t esp_loader_mem_start(uint32_t offset, uint32_t size, uint32_t block_size)
+{
+    uint32_t blocks_to_write = ROUNDUP(size, block_size);
+    loader_port_start_timer(timeout_per_mb(size, LOAD_RAM_TIMEOUT_PER_MB));
+    return loader_mem_begin_cmd(offset, size, blocks_to_write, block_size);
+}
+
+
+esp_loader_error_t esp_loader_mem_write(const void *payload, uint32_t size)
+{
+    const uint8_t *data = (const uint8_t *)payload;
+    loader_port_start_timer(timeout_per_mb(size, LOAD_RAM_TIMEOUT_PER_MB));
+    return loader_mem_data_cmd(data, size);
+}
+
+
+esp_loader_error_t esp_loader_mem_finish(uint32_t entrypoint)
+{
+    loader_port_start_timer(DEFAULT_TIMEOUT);
+    return loader_mem_end_cmd(entrypoint);
+}
+
+
+esp_loader_error_t esp_loader_read_register(uint32_t address, uint32_t *reg_value)
+{
+    loader_port_start_timer(DEFAULT_TIMEOUT);
+
+    return loader_read_reg_cmd(address, reg_value);
+}
+
+
+esp_loader_error_t esp_loader_write_register(uint32_t address, uint32_t reg_value)
+{
+    loader_port_start_timer(DEFAULT_TIMEOUT);
+
+    return loader_write_reg_cmd(address, reg_value, 0xFFFFFFFF, 0);
+}
+
+esp_loader_error_t esp_loader_change_transmission_rate(uint32_t transmission_rate)
+{
+    if (s_target == ESP8266_CHIP) {
+        return ESP_LOADER_ERROR_UNSUPPORTED_FUNC;
+    }
+
+    loader_port_start_timer(DEFAULT_TIMEOUT);
+
+    return loader_change_baudrate_cmd(transmission_rate);
+}
+
+#if MD5_ENABLED
+
+static void hexify(const uint8_t raw_md5[16], uint8_t hex_md5_out[32])
+{
+    static const uint8_t dec_to_hex[] = {
+        '0', '1', '2', '3', '4', '5', '6', '7',
+        '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
+    };
+    for (int i = 0; i < 16; i++) {
+        *hex_md5_out++ = dec_to_hex[raw_md5[i] >> 4];
+        *hex_md5_out++ = dec_to_hex[raw_md5[i] & 0xF];
+    }
+}
+
+
+esp_loader_error_t esp_loader_flash_verify(void)
+{
+    if (s_target == ESP8266_CHIP) {
+        return ESP_LOADER_ERROR_UNSUPPORTED_FUNC;
+    }
+
+    uint8_t raw_md5[16] = {0};
+
+    /* Zero termination and new line character require 2 bytes */
+    uint8_t hex_md5[MD5_SIZE + 2] = {0};
+    uint8_t received_md5[MD5_SIZE + 2] = {0};
+
+    md5_final(raw_md5);
+    hexify(raw_md5, hex_md5);
+
+    loader_port_start_timer(timeout_per_mb(s_image_size, MD5_TIMEOUT_PER_MB));
+
+    RETURN_ON_ERROR( loader_md5_cmd(s_start_address, s_image_size, received_md5) );
+
+    bool md5_match = memcmp(hex_md5, received_md5, MD5_SIZE) == 0;
+
+    if (!md5_match) {
+        hex_md5[MD5_SIZE] = '\n';
+        received_md5[MD5_SIZE] = '\n';
+
+        loader_port_debug_print("Error: MD5 checksum does not match:\n");
+        loader_port_debug_print("Expected:\n");
+        loader_port_debug_print((char *)received_md5);
+        loader_port_debug_print("Actual:\n");
+        loader_port_debug_print((char *)hex_md5);
+
+        return ESP_LOADER_ERROR_INVALID_MD5;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+#endif
+
+void esp_loader_reset_target(void)
+{
+    loader_port_reset_target();
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/esp_targets.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/esp_targets.c
@@ -0,0 +1,263 @@
+/* Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "esp_targets.h"
+#include <stddef.h>
+
+#define MAX_MAGIC_VALUES 2
+
+typedef esp_loader_error_t (*read_spi_config_t)(uint32_t efuse_base, uint32_t *spi_config);
+
+typedef struct {
+    target_registers_t regs;
+    uint32_t efuse_base;
+    uint32_t chip_magic_value[MAX_MAGIC_VALUES];
+    read_spi_config_t read_spi_config;
+    bool encryption_in_begin_flash_cmd;
+} esp_target_t;
+
+// This ROM address has a different value on each chip model
+#define CHIP_DETECT_MAGIC_REG_ADDR 0x40001000
+
+#define ESP8266_SPI_REG_BASE 0x60000200
+#define ESP32S2_SPI_REG_BASE 0x3f402000
+#define ESP32xx_SPI_REG_BASE 0x60002000
+#define ESP32_SPI_REG_BASE   0x3ff42000
+
+static esp_loader_error_t spi_config_esp32(uint32_t efuse_base, uint32_t *spi_config);
+static esp_loader_error_t spi_config_esp32xx(uint32_t efuse_base, uint32_t *spi_config);
+
+static const esp_target_t esp_target[ESP_MAX_CHIP] = {
+
+    // ESP8266
+    {
+        .regs = {
+            .cmd  = ESP8266_SPI_REG_BASE + 0x00,
+            .usr  = ESP8266_SPI_REG_BASE + 0x1c,
+            .usr1 = ESP8266_SPI_REG_BASE + 0x20,
+            .usr2 = ESP8266_SPI_REG_BASE + 0x24,
+            .w0   = ESP8266_SPI_REG_BASE + 0x40,
+            .mosi_dlen  = 0,
+            .miso_dlen  = 0,
+        },
+        .efuse_base = 0,            // Not used
+        .chip_magic_value  = { 0xfff0c101, 0 },
+        .read_spi_config = NULL,    // Not used
+    },
+
+    // ESP32
+    {
+        .regs = {
+            .cmd  = ESP32_SPI_REG_BASE + 0x00,
+            .usr  = ESP32_SPI_REG_BASE + 0x1c,
+            .usr1 = ESP32_SPI_REG_BASE + 0x20,
+            .usr2 = ESP32_SPI_REG_BASE + 0x24,
+            .w0   = ESP32_SPI_REG_BASE + 0x80,
+            .mosi_dlen = ESP32_SPI_REG_BASE + 0x28,
+            .miso_dlen = ESP32_SPI_REG_BASE + 0x2c,
+        },
+        .efuse_base = 0x3ff5A000,
+        .chip_magic_value  = { 0x00f01d83, 0 },
+        .read_spi_config = spi_config_esp32,
+    },
+
+    // ESP32S2
+    {
+        .regs = {
+            .cmd  = ESP32S2_SPI_REG_BASE + 0x00,
+            .usr  = ESP32S2_SPI_REG_BASE + 0x18,
+            .usr1 = ESP32S2_SPI_REG_BASE + 0x1c,
+            .usr2 = ESP32S2_SPI_REG_BASE + 0x20,
+            .w0   = ESP32S2_SPI_REG_BASE + 0x58,
+            .mosi_dlen = ESP32S2_SPI_REG_BASE + 0x24,
+            .miso_dlen = ESP32S2_SPI_REG_BASE + 0x28,
+        },
+        .efuse_base = 0x3f41A000,
+        .chip_magic_value  = { 0x000007c6, 0 },
+        .read_spi_config = spi_config_esp32xx,
+    },
+
+    // ESP32C3
+    {
+        .regs = {
+            .cmd  = ESP32xx_SPI_REG_BASE + 0x00,
+            .usr  = ESP32xx_SPI_REG_BASE + 0x18,
+            .usr1 = ESP32xx_SPI_REG_BASE + 0x1c,
+            .usr2 = ESP32xx_SPI_REG_BASE + 0x20,
+            .w0   = ESP32xx_SPI_REG_BASE + 0x58,
+            .mosi_dlen = ESP32xx_SPI_REG_BASE + 0x24,
+            .miso_dlen = ESP32xx_SPI_REG_BASE + 0x28,
+        },
+        .efuse_base = 0x60008800,
+        .chip_magic_value = { 0x6921506f, 0x1b31506f },
+        .read_spi_config = spi_config_esp32xx,
+    },
+
+    // ESP32S3
+    {
+        .regs = {
+            .cmd  = ESP32xx_SPI_REG_BASE + 0x00,
+            .usr  = ESP32xx_SPI_REG_BASE + 0x18,
+            .usr1 = ESP32xx_SPI_REG_BASE + 0x1c,
+            .usr2 = ESP32xx_SPI_REG_BASE + 0x20,
+            .w0   = ESP32xx_SPI_REG_BASE + 0x58,
+            .mosi_dlen = ESP32xx_SPI_REG_BASE + 0x24,
+            .miso_dlen = ESP32xx_SPI_REG_BASE + 0x28,
+        },
+        .efuse_base = 0x60007000,
+        .chip_magic_value = { 0x00000009, 0 },
+        .read_spi_config = spi_config_esp32xx,
+    },
+
+    // ESP32C2
+    {
+        .regs = {
+            .cmd  = ESP32xx_SPI_REG_BASE + 0x00,
+            .usr  = ESP32xx_SPI_REG_BASE + 0x18,
+            .usr1 = ESP32xx_SPI_REG_BASE + 0x1c,
+            .usr2 = ESP32xx_SPI_REG_BASE + 0x20,
+            .w0   = ESP32xx_SPI_REG_BASE + 0x58,
+            .mosi_dlen = ESP32xx_SPI_REG_BASE + 0x24,
+            .miso_dlen = ESP32xx_SPI_REG_BASE + 0x28,
+        },
+        .efuse_base = 0x60008800,
+        .chip_magic_value = { 0x6f51306f, 0x7c41a06f },
+        .read_spi_config = spi_config_esp32xx,
+    },
+    // ESP32H4
+    {
+        .regs = {
+            .cmd  = ESP32xx_SPI_REG_BASE + 0x00,
+            .usr  = ESP32xx_SPI_REG_BASE + 0x18,
+            .usr1 = ESP32xx_SPI_REG_BASE + 0x1c,
+            .usr2 = ESP32xx_SPI_REG_BASE + 0x20,
+            .w0   = ESP32xx_SPI_REG_BASE + 0x58,
+            .mosi_dlen = ESP32xx_SPI_REG_BASE + 0x24,
+            .miso_dlen = ESP32xx_SPI_REG_BASE + 0x28,
+        },
+        .efuse_base = 0x6001A000,
+        .chip_magic_value = {0xca26cc22, 0x6881b06f}, // ESP32H4-BETA1, ESP32H4-BETA2
+        .read_spi_config = spi_config_esp32xx,
+    },
+    // ESP32H2
+    {
+        .regs = {
+            .cmd  = ESP32xx_SPI_REG_BASE + 0x00,
+            .usr  = ESP32xx_SPI_REG_BASE + 0x18,
+            .usr1 = ESP32xx_SPI_REG_BASE + 0x1c,
+            .usr2 = ESP32xx_SPI_REG_BASE + 0x20,
+            .w0   = ESP32xx_SPI_REG_BASE + 0x58,
+            .mosi_dlen = ESP32xx_SPI_REG_BASE + 0x24,
+            .miso_dlen = ESP32xx_SPI_REG_BASE + 0x28,
+        },
+        .efuse_base = 0x6001A000,
+        .chip_magic_value = {0xd7b73e80, 0},
+        .read_spi_config = spi_config_esp32xx,
+    },
+};
+
+const target_registers_t *get_esp_target_data(target_chip_t chip)
+{
+    return (const target_registers_t *)&esp_target[chip];
+}
+
+esp_loader_error_t loader_detect_chip(target_chip_t *target_chip, const target_registers_t **target_data)
+{
+    uint32_t magic_value;
+    RETURN_ON_ERROR( esp_loader_read_register(CHIP_DETECT_MAGIC_REG_ADDR,  &magic_value) );
+
+    for (int chip = 0; chip < ESP_MAX_CHIP; chip++) {
+        for(int index = 0; index < MAX_MAGIC_VALUES; index++) {
+            if (magic_value == esp_target[chip].chip_magic_value[index]) {
+                *target_chip = (target_chip_t)chip;
+                *target_data = (target_registers_t *)&esp_target[chip];
+                return ESP_LOADER_SUCCESS;
+            }
+        }
+    }
+
+    return ESP_LOADER_ERROR_INVALID_TARGET;
+}
+
+esp_loader_error_t loader_read_spi_config(target_chip_t target_chip, uint32_t *spi_config)
+{
+    const esp_target_t *target = &esp_target[target_chip];
+    return target->read_spi_config(target->efuse_base, spi_config);
+}
+
+static inline uint32_t efuse_word_addr(uint32_t efuse_base, uint32_t n)
+{
+    return efuse_base + (n * 4);
+}
+
+// 30->GPIO32 | 31->GPIO33
+static inline uint8_t adjust_pin_number(uint8_t num)
+{
+    return (num >= 30) ? num + 2 : num;
+}
+
+
+static esp_loader_error_t spi_config_esp32(uint32_t efuse_base, uint32_t *spi_config)
+{
+    *spi_config = 0;
+
+    uint32_t reg5, reg3;
+    RETURN_ON_ERROR( esp_loader_read_register(efuse_word_addr(efuse_base, 5), &reg5) );
+    RETURN_ON_ERROR( esp_loader_read_register(efuse_word_addr(efuse_base, 3), &reg3) );
+
+    uint32_t pins = reg5 & 0xfffff;
+
+    if (pins == 0 || pins == 0xfffff) {
+        return ESP_LOADER_SUCCESS;
+    }
+
+    uint8_t clk = adjust_pin_number( (pins >> 0)  & 0x1f );
+    uint8_t q   = adjust_pin_number( (pins >> 5)  & 0x1f );
+    uint8_t d   = adjust_pin_number( (pins >> 10) & 0x1f );
+    uint8_t cs  = adjust_pin_number( (pins >> 15) & 0x1f );
+    uint8_t hd  = adjust_pin_number( (reg3 >> 4)  & 0x1f );
+
+    if (clk == cs || clk == d || clk == q || q == cs || q == d || q == d) {
+        return ESP_LOADER_SUCCESS;
+    }
+
+    *spi_config = (hd << 24) | (cs << 18) | (d << 12) | (q << 6) | clk;
+
+    return ESP_LOADER_SUCCESS;
+}
+
+// Applies for esp32s2, esp32c3 and esp32c3
+static esp_loader_error_t spi_config_esp32xx(uint32_t efuse_base, uint32_t *spi_config)
+{
+    *spi_config = 0;
+
+    uint32_t reg1, reg2;
+    RETURN_ON_ERROR( esp_loader_read_register(efuse_word_addr(efuse_base, 18), &reg1) );
+    RETURN_ON_ERROR( esp_loader_read_register(efuse_word_addr(efuse_base, 19), &reg2) );
+
+    uint32_t pins = ((reg1 >> 16) | ((reg2 & 0xfffff) << 16)) & 0x3fffffff;
+
+    if (pins == 0 || pins == 0xffffffff) {
+        return ESP_LOADER_SUCCESS;
+    }
+
+    *spi_config = pins;
+    return ESP_LOADER_SUCCESS;
+}
+
+bool encryption_in_begin_flash_cmd(target_chip_t target)
+{
+    return target == ESP32_CHIP || target == ESP8266_CHIP;
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/md5_hash.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/md5_hash.c
@@ -0,0 +1,262 @@
+/*
+ * MD5 hash implementation and interface functions
+ * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+
+#include "md5_hash.h"
+#include <stdlib.h>
+#include <string.h>
+
+
+static void MD5Transform(uint32_t buf[4], uint32_t const in[16]);
+
+
+/* ===== start - public domain MD5 implementation ===== */
+/*
+ * This code implements the MD5 message-digest algorithm.
+ * The algorithm is due to Ron Rivest.  This code was
+ * written by Colin Plumb in 1993, no copyright is claimed.
+ * This code is in the public domain; do with it what you wish.
+ *
+ * Equivalent code is available from RSA Data Security, Inc.
+ * This code has been tested against that, and is equivalent,
+ * except that you don't need to include two pages of legalese
+ * with every copy.
+ *
+ * To compute the message digest of a chunk of bytes, declare an
+ * MD5Context structure, pass it to MD5Init, call MD5Update as
+ * needed on buffers full of bytes, and then call MD5Final, which
+ * will fill a supplied 16-byte array with the digest.
+ */
+
+#ifndef WORDS_BIGENDIAN
+#define byteReverse(buf, len)   /* Nothing */
+#else
+/*
+ * Note: this code is harmless on little-endian machines.
+ */
+static void byteReverse(unsigned char *buf, unsigned longs)
+{
+    uint32_t t;
+    do {
+        t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
+            ((unsigned) buf[1] << 8 | buf[0]);
+        *(uint32_t *) buf = t;
+        buf += 4;
+    } while (--longs);
+}
+#endif
+
+/*
+ * Start MD5 accumulation.  Set bit count to 0 and buffer to mysterious
+ * initialization constants.
+ */
+void MD5Init(struct MD5Context *ctx)
+{
+    ctx->buf[0] = 0x67452301;
+    ctx->buf[1] = 0xefcdab89;
+    ctx->buf[2] = 0x98badcfe;
+    ctx->buf[3] = 0x10325476;
+
+    ctx->bits[0] = 0;
+    ctx->bits[1] = 0;
+}
+
+/*
+ * Update context to reflect the concatenation of another buffer full
+ * of bytes.
+ */
+void MD5Update(struct MD5Context *ctx, unsigned char const *buf, unsigned len)
+{
+    uint32_t t;
+
+    /* Update bitcount */
+
+    t = ctx->bits[0];
+    if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t) {
+        ctx->bits[1]++;    /* Carry from low to high */
+    }
+    ctx->bits[1] += len >> 29;
+
+    t = (t >> 3) & 0x3f;    /* Bytes already in shsInfo->data */
+
+    /* Handle any leading odd-sized chunks */
+
+    if (t) {
+        unsigned char *p = (unsigned char *) ctx->in + t;
+
+        t = 64 - t;
+        if (len < t) {
+            memcpy(p, buf, len);
+            return;
+        }
+        memcpy(p, buf, t);
+        byteReverse(ctx->in, 16);
+        MD5Transform((uint32_t *)ctx->buf, (uint32_t *) ctx->in);
+        buf += t;
+        len -= t;
+    }
+    /* Process data in 64-byte chunks */
+
+    while (len >= 64) {
+        memcpy(ctx->in, buf, 64);
+        byteReverse(ctx->in, 16);
+        MD5Transform((uint32_t *)ctx->buf, (uint32_t *) ctx->in);
+        buf += 64;
+        len -= 64;
+    }
+
+    /* Handle any remaining bytes of data. */
+
+    memcpy(ctx->in, buf, len);
+}
+
+/*
+ * Final wrapup - pad to 64-byte boundary with the bit pattern
+ * 1 0* (64-bit count of bits processed, MSB-first)
+ */
+void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
+{
+    unsigned count;
+    unsigned char *p;
+
+    /* Compute number of bytes mod 64 */
+    count = (ctx->bits[0] >> 3) & 0x3F;
+
+    /* Set the first char of padding to 0x80.  This is safe since there is
+       always at least one byte free */
+    p = ctx->in + count;
+    *p++ = 0x80;
+
+    /* Bytes of padding needed to make 64 bytes */
+    count = 64 - 1 - count;
+
+    /* Pad out to 56 mod 64 */
+    if (count < 8) {
+        /* Two lots of padding:  Pad the first block to 64 bytes */
+        memset(p, 0, count);
+        byteReverse(ctx->in, 16);
+        MD5Transform((uint32_t *)ctx->buf, (uint32_t *) ctx->in);
+
+        /* Now fill the next block with 56 bytes */
+        memset(ctx->in, 0, 56);
+    } else {
+        /* Pad block to 56 bytes */
+        memset(p, 0, count - 8);
+    }
+    byteReverse(ctx->in, 14);
+
+    /* Append length in bits and transform */
+    ((uint32_t *) ctx->in)[14] = ctx->bits[0];
+    ((uint32_t *) ctx->in)[15] = ctx->bits[1];
+
+    MD5Transform((uint32_t *)ctx->buf, (uint32_t *) ctx->in);
+    byteReverse((unsigned char *) ctx->buf, 4);
+    memcpy(digest, ctx->buf, 16);
+    memset(ctx, 0, sizeof(struct MD5Context));  /* In case it's sensitive */
+}
+
+/* The four core functions - F1 is optimized somewhat */
+
+/* #define F1(x, y, z) (x & y | ~x & z) */
+#define F1(x, y, z) (z ^ (x & (y ^ z)))
+#define F2(x, y, z) F1(z, x, y)
+#define F3(x, y, z) (x ^ y ^ z)
+#define F4(x, y, z) (y ^ (x | ~z))
+
+/* This is the central step in the MD5 algorithm. */
+#define MD5STEP(f, w, x, y, z, data, s) \
+    ( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+
+/*
+ * The core of the MD5 algorithm, this alters an existing MD5 hash to
+ * reflect the addition of 16 longwords of new data.  MD5Update blocks
+ * the data and converts bytes into longwords for this routine.
+ */
+static void MD5Transform(uint32_t buf[4], uint32_t const in[16])
+{
+    register uint32_t a, b, c, d;
+
+    a = buf[0];
+    b = buf[1];
+    c = buf[2];
+    d = buf[3];
+
+    MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+    MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+    MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+    MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+    MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+    MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+    MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+    MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+    MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+    MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+    MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+    MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+    MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+    MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+    MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+    MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+    MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+    MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+    MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+    MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+    MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+    MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+    MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+    MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+    MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+    MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+    MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+    MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+    MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+    MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+    MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+    MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+    MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+    MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+    MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+    MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+    MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+    MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+    MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+    MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+    MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+    MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+    MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+    MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+    MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+    MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+    MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+    MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+    MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+    MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+    MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+    MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+    MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+    MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+    MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+    MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+    MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+    MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+    MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+    MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+    MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+    MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+    MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+    MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+    buf[0] += a;
+    buf[1] += b;
+    buf[2] += c;
+    buf[3] += d;
+}
+/* ===== end - public domain MD5 implementation ===== */
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/protocol_common.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/protocol_common.c
@@ -0,0 +1,301 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "protocol.h"
+#include "protocol_prv.h"
+#include "esp_loader_io.h"
+#include <stddef.h>
+#include <string.h>
+
+#define CMD_SIZE(cmd) ( sizeof(cmd) - sizeof(command_common_t) )
+
+static uint32_t s_sequence_number = 0;
+
+static uint8_t compute_checksum(const uint8_t *data, uint32_t size)
+{
+    uint8_t checksum = 0xEF;
+
+    while (size--) {
+        checksum ^= *data++;
+    }
+
+    return checksum;
+}
+
+void log_loader_internal_error(error_code_t error)
+{
+    loader_port_debug_print("Error: ");
+
+    switch (error) {
+        case INVALID_CRC:     loader_port_debug_print("INVALID_CRC"); break;
+        case INVALID_COMMAND: loader_port_debug_print("INVALID_COMMAND"); break;
+        case COMMAND_FAILED:  loader_port_debug_print("COMMAND_FAILED"); break;
+        case FLASH_WRITE_ERR: loader_port_debug_print("FLASH_WRITE_ERR"); break;
+        case FLASH_READ_ERR:  loader_port_debug_print("FLASH_READ_ERR"); break;
+        case READ_LENGTH_ERR: loader_port_debug_print("READ_LENGTH_ERR"); break;
+        case DEFLATE_ERROR:   loader_port_debug_print("DEFLATE_ERROR"); break;
+        default:              loader_port_debug_print("UNKNOWN ERROR"); break;
+    }
+
+    loader_port_debug_print("\n");
+}
+
+
+esp_loader_error_t loader_flash_begin_cmd(uint32_t offset,
+                                          uint32_t erase_size,
+                                          uint32_t block_size,
+                                          uint32_t blocks_to_write,
+                                          bool encryption)
+{
+    uint32_t encryption_size = encryption ? sizeof(uint32_t) : 0;
+
+    flash_begin_command_t flash_begin_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = FLASH_BEGIN,
+            .size = CMD_SIZE(flash_begin_cmd) - encryption_size,
+            .checksum = 0
+        },
+        .erase_size = erase_size,
+        .packet_count = blocks_to_write,
+        .packet_size = block_size,
+        .offset = offset,
+        .encrypted = 0
+    };
+
+    s_sequence_number = 0;
+
+    return send_cmd(&flash_begin_cmd, sizeof(flash_begin_cmd) - encryption_size, NULL);
+}
+
+
+esp_loader_error_t loader_flash_data_cmd(const uint8_t *data, uint32_t size)
+{
+    data_command_t data_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = FLASH_DATA,
+            .size = CMD_SIZE(data_cmd) + size,
+            .checksum = compute_checksum(data, size)
+        },
+        .data_size = size,
+        .sequence_number = s_sequence_number++,
+    };
+
+    return send_cmd_with_data(&data_cmd, sizeof(data_cmd), data, size);
+}
+
+
+esp_loader_error_t loader_flash_end_cmd(bool stay_in_loader)
+{
+    flash_end_command_t end_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = FLASH_END,
+            .size = CMD_SIZE(end_cmd),
+            .checksum = 0
+        },
+        .stay_in_loader = stay_in_loader
+    };
+
+    return send_cmd(&end_cmd, sizeof(end_cmd), NULL);
+}
+
+
+esp_loader_error_t loader_mem_begin_cmd(uint32_t offset, uint32_t size, uint32_t blocks_to_write, uint32_t block_size)
+{
+
+    mem_begin_command_t mem_begin_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = MEM_BEGIN,
+            .size = CMD_SIZE(mem_begin_cmd),
+            .checksum = 0
+        },
+        .total_size = size,
+        .blocks = blocks_to_write,
+        .block_size = block_size,
+        .offset = offset
+    };
+
+    s_sequence_number = 0;
+
+    return send_cmd(&mem_begin_cmd, sizeof(mem_begin_cmd), NULL);
+}
+
+
+esp_loader_error_t loader_mem_data_cmd(const uint8_t *data, uint32_t size)
+{
+    data_command_t data_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = MEM_DATA,
+            .size = CMD_SIZE(data_cmd) + size,
+            .checksum = compute_checksum(data, size)
+        },
+        .data_size = size,
+        .sequence_number = s_sequence_number++,
+    };
+    return send_cmd_with_data(&data_cmd, sizeof(data_cmd), data, size);
+}
+
+esp_loader_error_t loader_mem_end_cmd(uint32_t entrypoint)
+{
+    mem_end_command_t end_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = MEM_END,
+            .size = CMD_SIZE(end_cmd),
+        },
+        .stay_in_loader = (entrypoint == 0),
+        .entry_point_address = entrypoint
+    };
+
+    return send_cmd(&end_cmd, sizeof(end_cmd), NULL);
+}
+
+
+esp_loader_error_t loader_sync_cmd(void)
+{
+    sync_command_t sync_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = SYNC,
+            .size = CMD_SIZE(sync_cmd),
+            .checksum = 0
+        },
+        .sync_sequence = {
+            0x07, 0x07, 0x12, 0x20,
+            0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+            0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+            0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+            0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+        }
+    };
+
+    return send_cmd(&sync_cmd, sizeof(sync_cmd), NULL);
+}
+
+
+esp_loader_error_t loader_write_reg_cmd(uint32_t address, uint32_t value,
+                                        uint32_t mask, uint32_t delay_us)
+{
+    write_reg_command_t write_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = WRITE_REG,
+            .size = CMD_SIZE(write_cmd),
+            .checksum = 0
+        },
+        .address = address,
+        .value = value,
+        .mask = mask,
+        .delay_us = delay_us
+    };
+
+    return send_cmd(&write_cmd, sizeof(write_cmd), NULL);
+}
+
+
+esp_loader_error_t loader_read_reg_cmd(uint32_t address, uint32_t *reg)
+{
+    read_reg_command_t read_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = READ_REG,
+            .size = CMD_SIZE(read_cmd),
+            .checksum = 0
+        },
+        .address = address,
+    };
+
+    return send_cmd(&read_cmd, sizeof(read_cmd), reg);
+}
+
+
+esp_loader_error_t loader_spi_attach_cmd(uint32_t config)
+{
+    spi_attach_command_t attach_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = SPI_ATTACH,
+            .size = CMD_SIZE(attach_cmd),
+            .checksum = 0
+        },
+        .configuration = config,
+        .zero = 0
+    };
+
+    return send_cmd(&attach_cmd, sizeof(attach_cmd), NULL);
+}
+
+esp_loader_error_t loader_change_baudrate_cmd(uint32_t baudrate)
+{
+    change_baudrate_command_t baudrate_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = CHANGE_BAUDRATE,
+            .size = CMD_SIZE(baudrate_cmd),
+            .checksum = 0
+        },
+        .new_baudrate = baudrate,
+        .old_baudrate = 0 // ESP32 ROM only
+    };
+
+    return send_cmd(&baudrate_cmd, sizeof(baudrate_cmd), NULL);
+}
+
+esp_loader_error_t loader_md5_cmd(uint32_t address, uint32_t size, uint8_t *md5_out)
+{
+    spi_flash_md5_command_t md5_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = SPI_FLASH_MD5,
+            .size = CMD_SIZE(md5_cmd),
+            .checksum = 0
+        },
+        .address = address,
+        .size = size,
+        .reserved_0 = 0,
+        .reserved_1 = 0
+    };
+
+    return send_cmd_md5(&md5_cmd, sizeof(md5_cmd), md5_out);
+}
+
+esp_loader_error_t loader_spi_parameters(uint32_t total_size)
+{
+    write_spi_command_t spi_cmd = {
+        .common = {
+            .direction = WRITE_DIRECTION,
+            .command = SPI_SET_PARAMS,
+            .size = 24,
+            .checksum = 0
+        },
+        .id = 0,
+        .total_size = total_size,
+        .block_size = 64 * 1024,
+        .sector_size = 4 * 1024,
+        .page_size = 0x100,
+        .status_mask = 0xFFFF,
+    };
+
+    return send_cmd(&spi_cmd, sizeof(spi_cmd), NULL);
+}
+
+__attribute__ ((weak)) void loader_port_debug_print(const char *str)
+{
+ (void)(str);
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/protocol_spi.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/protocol_spi.c
@@ -0,0 +1,312 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "protocol.h"
+#include "protocol_prv.h"
+#include "esp_loader_io.h"
+#include <stddef.h>
+#include <assert.h>
+
+typedef struct __attribute__((packed)) {
+    uint8_t cmd;
+    uint8_t addr;
+    uint8_t dummy;
+} transaction_preamble_t;
+
+typedef enum {
+    TRANS_CMD_WRBUF = 0x01,
+    TRANS_CMD_RDBUF = 0x02,
+    TRANS_CMD_WRDMA = 0x03,
+    TRANS_CMD_RDDMA = 0x04,
+    TRANS_CMD_SEG_DONE = 0x05,
+    TRANS_CMD_ENQPI = 0x06,
+    TRANS_CMD_WR_DONE = 0x07,
+    TRANS_CMD_CMD8 = 0x08,
+    TRANS_CMD_CMD9 = 0x09,
+    TRANS_CMD_CMDA = 0x0A,
+    TRANS_CMD_EXQPI = 0xDD,
+} transaction_cmd_t;
+
+/* Slave protocol registers */
+typedef enum {
+    SLAVE_REGISTER_VER = 0,
+    SLAVE_REGISTER_RXSTA = 4,
+    SLAVE_REGISTER_TXSTA = 8,
+    SLAVE_REGISTER_CMD = 12,
+} slave_register_addr_t;
+
+#define SLAVE_STA_TOGGLE_BIT (0x01U << 0)
+#define SLAVE_STA_INIT_BIT (0x01U << 1)
+#define SLAVE_STA_BUF_LENGTH_POS 2U
+
+typedef enum {
+    SLAVE_STATE_INIT = SLAVE_STA_TOGGLE_BIT | SLAVE_STA_INIT_BIT,
+    SLAVE_STATE_FIRST_PACKET = SLAVE_STA_INIT_BIT,
+} slave_state_t;
+
+typedef enum {
+    /* Target to host */
+    SLAVE_CMD_IDLE = 0xAA,
+    SLAVE_CMD_READY = 0xA5,
+    /* Host to target */
+    SLAVE_CMD_REBOOT = 0xFE,
+    SLAVE_CMD_COMM_REINIT = 0x5A,
+    SLAVE_CMD_DONE = 0x55,
+} slave_cmd_t;
+
+static uint8_t s_slave_seq_tx;
+static uint8_t s_slave_seq_rx;
+
+static esp_loader_error_t write_slave_reg(const uint8_t *data, const uint32_t addr,
+                                                 const uint8_t size);
+static esp_loader_error_t read_slave_reg(uint8_t *out_data, const uint32_t addr,
+                                                const uint8_t size);
+static esp_loader_error_t handle_slave_state(const uint32_t status_reg_addr, uint8_t *seq_state,
+                                             bool *slave_ready, uint32_t *buf_size);
+static esp_loader_error_t check_response(command_t cmd, uint32_t *reg_value);
+
+esp_loader_error_t loader_initialize_conn(esp_loader_connect_args_t *connect_args)
+{
+    for (uint8_t trial = 0; trial < connect_args->trials; trial++) {
+        uint8_t slave_ready_flag;
+        RETURN_ON_ERROR(read_slave_reg(&slave_ready_flag, SLAVE_REGISTER_CMD,
+                                              sizeof(slave_ready_flag)));
+
+        if (slave_ready_flag != SLAVE_CMD_IDLE) {
+            loader_port_debug_print("Waiting for Slave to be idle...\n");
+            loader_port_delay_ms(100);
+        } else {
+            break;
+        }
+    }
+
+    const uint8_t reg_val = SLAVE_CMD_READY;
+    RETURN_ON_ERROR(write_slave_reg(&reg_val, SLAVE_REGISTER_CMD, sizeof(reg_val)));
+
+    for (uint8_t trial = 0; trial < connect_args->trials; trial++) {
+        uint8_t slave_ready_flag;
+        RETURN_ON_ERROR(read_slave_reg(&slave_ready_flag, SLAVE_REGISTER_CMD,
+                                              sizeof(slave_ready_flag)));
+
+        if (slave_ready_flag != SLAVE_CMD_READY) {
+            loader_port_debug_print("Waiting for Slave to be ready...\n");
+            loader_port_delay_ms(100);
+        } else {
+            break;
+        }
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+esp_loader_error_t send_cmd(const void *cmd_data, uint32_t size, uint32_t *reg_value)
+{
+    command_t command = ((const command_common_t *)cmd_data)->command;
+
+    uint32_t buf_size;
+    bool slave_ready = false;
+    while (!slave_ready) {
+        RETURN_ON_ERROR(handle_slave_state(SLAVE_REGISTER_RXSTA, &s_slave_seq_rx, &slave_ready,
+                                           &buf_size));
+    }
+
+    if (size > buf_size) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    /* Start and write the command */
+    transaction_preamble_t preamble = {.cmd = TRANS_CMD_WRDMA};
+
+    loader_port_spi_set_cs(0);
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)cmd_data, size,
+                                      loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    /* Terminate the write */
+    loader_port_spi_set_cs(0);
+    preamble.cmd = TRANS_CMD_WR_DONE;
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    return check_response(command, reg_value);
+}
+
+
+esp_loader_error_t send_cmd_with_data(const void *cmd_data, size_t cmd_size,
+                                      const void *data, size_t data_size)
+{
+    uint32_t buf_size;
+    bool slave_ready = false;
+    while (!slave_ready) {
+        RETURN_ON_ERROR(handle_slave_state(SLAVE_REGISTER_RXSTA, &s_slave_seq_rx, &slave_ready,
+                                           &buf_size));
+    }
+
+    if (cmd_size + data_size > buf_size) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    /* Start and write the command and the data */
+    transaction_preamble_t preamble = {.cmd = TRANS_CMD_WRDMA};
+
+    loader_port_spi_set_cs(0);
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)cmd_data, cmd_size,
+                                      loader_port_remaining_time()));
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)data, data_size,
+                                      loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    /* Terminate the write */
+    loader_port_spi_set_cs(0);
+    preamble.cmd = TRANS_CMD_WR_DONE;
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    command_t command = ((const command_common_t *)cmd_data)->command;
+    return check_response(command, NULL);
+}
+
+
+static esp_loader_error_t read_slave_reg(uint8_t *out_data, const uint32_t addr,
+                                         const uint8_t size)
+{
+    transaction_preamble_t preamble = {
+        .cmd = TRANS_CMD_RDBUF,
+        .addr = addr,
+    };
+
+    loader_port_spi_set_cs(0);
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    RETURN_ON_ERROR(loader_port_read(out_data, size, loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+static esp_loader_error_t write_slave_reg(const uint8_t *data, const uint32_t addr,
+                                          const uint8_t size)
+{
+    transaction_preamble_t preamble = {
+        .cmd = TRANS_CMD_WRBUF,
+        .addr = addr,
+    };
+
+    loader_port_spi_set_cs(0);
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    RETURN_ON_ERROR(loader_port_write(data, size, loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+static esp_loader_error_t handle_slave_state(const uint32_t status_reg_addr, uint8_t *seq_state,
+                                             bool *slave_ready, uint32_t *buf_size)
+{
+    uint32_t status_reg;
+    RETURN_ON_ERROR(read_slave_reg((uint8_t *)&status_reg, status_reg_addr,
+                                   sizeof(status_reg)));
+    const slave_state_t state = status_reg & (SLAVE_STA_TOGGLE_BIT | SLAVE_STA_INIT_BIT);
+
+    switch(state) {
+        case SLAVE_STATE_INIT: {
+            const uint32_t initial = 0U;
+            RETURN_ON_ERROR(write_slave_reg((uint8_t *)&initial, status_reg_addr, sizeof(initial)));
+            break;
+        }
+
+        case SLAVE_STATE_FIRST_PACKET: {
+            *seq_state = state & SLAVE_STA_TOGGLE_BIT;
+            *buf_size = status_reg >> SLAVE_STA_BUF_LENGTH_POS;
+            *slave_ready = true;
+            break;
+        }
+
+        default: {
+            const uint8_t new_seq = state & SLAVE_STA_TOGGLE_BIT;
+            if (new_seq != *seq_state) {
+                *seq_state = new_seq;
+                *buf_size = status_reg >> SLAVE_STA_BUF_LENGTH_POS;
+                *slave_ready = true;
+            }
+            break;
+        }
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+static esp_loader_error_t check_response(command_t cmd, uint32_t *reg_value)
+{
+    response_t resp;
+
+    uint32_t buf_size;
+    bool slave_ready = false;
+    while (!slave_ready) {
+        RETURN_ON_ERROR(handle_slave_state(SLAVE_REGISTER_TXSTA, &s_slave_seq_tx, &slave_ready,
+                                           &buf_size));
+    }
+
+    if (sizeof(resp) > buf_size) {
+        return ESP_LOADER_ERROR_INVALID_PARAM;
+    }
+
+    transaction_preamble_t preamble = {
+        .cmd = TRANS_CMD_RDDMA,
+    };
+
+    loader_port_spi_set_cs(0);
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    RETURN_ON_ERROR(loader_port_read((uint8_t *)&resp, sizeof(resp),
+                                     loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    /* Terminate the read */
+    loader_port_spi_set_cs(0);
+    preamble.cmd = TRANS_CMD_CMD8;
+    RETURN_ON_ERROR(loader_port_write((const uint8_t *)&preamble, sizeof(preamble),
+                                      loader_port_remaining_time()));
+    loader_port_spi_set_cs(1);
+
+    common_response_t *common = (common_response_t *)&resp;
+    if ((common->direction != READ_DIRECTION) || (common->command != cmd)) {
+        return ESP_LOADER_ERROR_INVALID_RESPONSE;
+    }
+
+    response_status_t *status =
+        (response_status_t *)((uint8_t *)&resp + sizeof(resp) - sizeof(response_status_t));
+    if (status->failed) {
+        log_loader_internal_error(status->error);
+        return ESP_LOADER_ERROR_INVALID_RESPONSE;
+    }
+
+    if (reg_value != NULL) {
+        *reg_value = common->value;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/protocol_uart.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/protocol_uart.c
@@ -0,0 +1,114 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "protocol.h"
+#include "protocol_prv.h"
+#include "esp_loader_io.h"
+#include "slip.h"
+#include <stddef.h>
+#include <string.h>
+
+static esp_loader_error_t check_response(command_t cmd, uint32_t *reg_value, void* resp, uint32_t resp_size);
+
+esp_loader_error_t loader_initialize_conn(esp_loader_connect_args_t *connect_args) {
+    esp_loader_error_t err;
+    int32_t trials = connect_args->trials;
+
+    do {
+        loader_port_start_timer(connect_args->sync_timeout);
+        err = loader_sync_cmd();
+        if (err == ESP_LOADER_ERROR_TIMEOUT) {
+            if (--trials == 0) {
+                return ESP_LOADER_ERROR_TIMEOUT;
+            }
+            loader_port_delay_ms(100);
+        } else if (err != ESP_LOADER_SUCCESS) {
+            return err;
+        }
+    } while (err != ESP_LOADER_SUCCESS);
+
+    return err;
+}
+
+esp_loader_error_t send_cmd(const void *cmd_data, uint32_t size, uint32_t *reg_value)
+{
+    response_t response;
+    command_t command = ((const command_common_t *)cmd_data)->command;
+
+    RETURN_ON_ERROR( SLIP_send_delimiter() );
+    RETURN_ON_ERROR( SLIP_send((const uint8_t *)cmd_data, size) );
+    RETURN_ON_ERROR( SLIP_send_delimiter() );
+
+    return check_response(command, reg_value, &response, sizeof(response));
+}
+
+
+esp_loader_error_t send_cmd_with_data(const void *cmd_data, size_t cmd_size,
+                                      const void *data, size_t data_size)
+{
+    response_t response;
+    command_t command = ((const command_common_t *)cmd_data)->command;
+
+    RETURN_ON_ERROR( SLIP_send_delimiter() );
+    RETURN_ON_ERROR( SLIP_send((const uint8_t *)cmd_data, cmd_size) );
+    RETURN_ON_ERROR( SLIP_send(data, data_size) );
+    RETURN_ON_ERROR( SLIP_send_delimiter() );
+
+    return check_response(command, NULL, &response, sizeof(response));
+}
+
+
+esp_loader_error_t send_cmd_md5(const void *cmd_data, size_t cmd_size, uint8_t md5_out[MD5_SIZE])
+{
+    rom_md5_response_t response;
+    command_t command = ((const command_common_t *)cmd_data)->command;
+
+    RETURN_ON_ERROR( SLIP_send_delimiter() );
+    RETURN_ON_ERROR( SLIP_send((const uint8_t *)cmd_data, cmd_size) );
+    RETURN_ON_ERROR( SLIP_send_delimiter() );
+
+    RETURN_ON_ERROR( check_response(command, NULL, &response, sizeof(response)) );
+
+    memcpy(md5_out, response.md5, MD5_SIZE);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+static esp_loader_error_t check_response(command_t cmd, uint32_t *reg_value, void* resp, uint32_t resp_size)
+{
+    esp_loader_error_t err;
+    common_response_t *response = (common_response_t *)resp;
+
+    do {
+        err = SLIP_receive_packet(resp, resp_size);
+        if (err != ESP_LOADER_SUCCESS) {
+            return err;
+        }
+    } while ((response->direction != READ_DIRECTION) || (response->command != cmd));
+
+    response_status_t *status = (response_status_t *)((uint8_t *)resp + resp_size - sizeof(response_status_t));
+
+    if (status->failed) {
+        log_loader_internal_error(status->error);
+        return ESP_LOADER_ERROR_INVALID_RESPONSE;
+    }
+
+    if (reg_value != NULL) {
+        *reg_value = response->value;
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/src/slip.c
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/src/slip.c
@@ -0,0 +1,125 @@
+/* Copyright 2020-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "slip.h"
+#include "esp_loader_io.h"
+
+static const uint8_t DELIMITER = 0xC0;
+static const uint8_t C0_REPLACEMENT[2] = {0xDB, 0xDC};
+static const uint8_t DB_REPLACEMENT[2] = {0xDB, 0xDD};
+
+static inline esp_loader_error_t peripheral_read(uint8_t *buff, const size_t size)
+{
+    return loader_port_read(buff, size, loader_port_remaining_time());
+}
+
+static inline esp_loader_error_t peripheral_write(const uint8_t *buff, const size_t size)
+{
+    return loader_port_write(buff, size, loader_port_remaining_time());
+}
+
+esp_loader_error_t SLIP_receive_data(uint8_t *buff, const size_t size)
+{
+    uint8_t ch;
+
+    for (uint32_t i = 0; i < size; i++) {
+        RETURN_ON_ERROR( peripheral_read(&ch, 1) );
+
+        if (ch == 0xDB) {
+            RETURN_ON_ERROR( peripheral_read(&ch, 1) );
+            if (ch == 0xDC) {
+                buff[i] = 0xC0;
+            } else if (ch == 0xDD) {
+                buff[i] = 0xDB;
+            } else {
+                return ESP_LOADER_ERROR_INVALID_RESPONSE;
+            }
+        } else {
+            buff[i] = ch;
+        }
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+esp_loader_error_t SLIP_receive_packet(uint8_t *buff, const size_t size)
+{
+    uint8_t ch;
+
+    // Wait for delimiter
+    do {
+        RETURN_ON_ERROR( peripheral_read(&ch, 1) );
+    } while (ch != DELIMITER);
+
+    // Workaround: bootloader sends two dummy(0xC0) bytes after response when baud rate is changed.
+    do {
+        RETURN_ON_ERROR( peripheral_read(&ch, 1) );
+    } while (ch == DELIMITER);
+
+    buff[0] = ch;
+
+    RETURN_ON_ERROR( SLIP_receive_data(&buff[1], size - 1) );
+
+    // Wait for delimiter
+    do {
+        RETURN_ON_ERROR( peripheral_read(&ch, 1) );
+    } while (ch != DELIMITER);
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+esp_loader_error_t SLIP_send(const uint8_t *data, const size_t size)
+{
+    uint32_t to_write = 0;  // Bytes ready to write as they are
+    uint32_t written = 0;   // Bytes already written
+
+    for (uint32_t i = 0; i < size; i++) {
+        if (data[i] != 0xC0 && data[i] != 0xDB) {
+            to_write++; // Queue this byte for writing
+            continue;
+        }
+
+        // We have a byte that needs encoding, write the queue first
+        if (to_write > 0) {
+            RETURN_ON_ERROR( peripheral_write(&data[written], to_write) );
+        }
+
+        // Write the encoded byte
+        if (data[i] == 0xC0) {
+            RETURN_ON_ERROR( peripheral_write(C0_REPLACEMENT, 2) );
+        } else {
+            RETURN_ON_ERROR( peripheral_write(DB_REPLACEMENT, 2) );
+        }
+
+        // Update to start again after the encoded byte
+        written = i + 1;
+        to_write = 0;
+    }
+
+    // Write the rest of the bytes that didn't need encoding
+    if (to_write > 0) {
+        RETURN_ON_ERROR( peripheral_write(&data[written], to_write) );
+    }
+
+    return ESP_LOADER_SUCCESS;
+}
+
+
+esp_loader_error_t SLIP_send_delimiter(void)
+{
+    return peripheral_write(&DELIMITER, 1);
+}
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/submodules/CMakeLists.txt
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/submodules/CMakeLists.txt
@@ -0,0 +1,20 @@
+
+cmake_minimum_required(VERSION 3.13)
+
+set(CMAKE_TOOLCHAIN_FILE ${CMAKE_CURRENT_LIST_DIR}/stm32-cmake/cmake/gcc_stm32.cmake)
+set(CMAKE_MODULE_PATH    ${CMAKE_CURRENT_LIST_DIR}/stm32-cmake/cmake)
+
+find_package(CMSIS REQUIRED)
+find_package(STM32HAL COMPONENTS gpio tim uart REQUIRED)
+
+add_library(stm_cube_impl ${CMSIS_SOURCES} ${STM32HAL_SOURCES})
+target_include_directories(stm_cube_impl PUBLIC ${CMSIS_INCLUDE_DIRS} ${STM32HAL_INCLUDE_DIR})
+stm32_set_target_properties(stm_cube_impl)
+
+# stm_cube target is made to propagate properties of stm_cube_impl, as stm32_set_target_properties 
+# sets properties privately for given target. This eliminates need to call stm32_set_target_properties
+# on every target that links against STM32HAL.
+add_library(stm_cube INTERFACE)
+target_link_libraries(stm_cube INTERFACE stm_cube_impl)
+target_compile_definitions(stm_cube INTERFACE $<TARGET_PROPERTY:stm_cube_impl,COMPILE_DEFINITIONS>)
+target_link_options(stm_cube INTERFACE -T${CMAKE_CURRENT_BINARY_DIR}/stm_cube_impl_flash.ld)
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/zephyr/CMakeLists.txt
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/zephyr/CMakeLists.txt
@@ -0,0 +1,30 @@
+cmake_minimum_required(VERSION 3.5)
+
+if (CONFIG_ESP_SERIAL_FLASHER)
+    zephyr_include_directories(
+        "${ZEPHYR_CURRENT_MODULE_DIR}/include"
+        "${ZEPHYR_CURRENT_MODULE_DIR}/port"
+        "${ZEPHYR_CURRENT_MODULE_DIR}/private_include"
+    )
+
+    zephyr_interface_library_named(esp_flasher)
+
+    zephyr_library()
+
+    zephyr_library_sources(${ZEPHYR_CURRENT_MODULE_DIR}/src/esp_loader.c
+                ${ZEPHYR_CURRENT_MODULE_DIR}/src/esp_targets.c
+                ${ZEPHYR_CURRENT_MODULE_DIR}/src/protocol_common.c
+                ${ZEPHYR_CURRENT_MODULE_DIR}/src/protocol_uart.c
+                ${ZEPHYR_CURRENT_MODULE_DIR}/src/slip.c
+                ${ZEPHYR_CURRENT_MODULE_DIR}/src/md5_hash.c
+                ${ZEPHYR_CURRENT_MODULE_DIR}/port/zephyr_port.c
+    )
+
+    target_compile_definitions(esp_flasher INTERFACE SERIAL_FLASHER_INTERFACE_UART)
+
+    zephyr_library_link_libraries(esp_flasher)
+
+    if(DEFINED MD5_ENABLED OR CONFIG_SERIAL_FLASHER_MD5_ENABLED)
+        target_compile_definitions(esp_flasher INTERFACE -DMD5_ENABLED=1)
+    endif()
+endif()
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/zephyr/Kconfig
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/zephyr/Kconfig
@@ -0,0 +1,16 @@
+config ESP_SERIAL_FLASHER
+    bool "Enable ESP serial flasher library"
+    default y
+    select CONSOLE_SUBSYS
+    help
+      Select this option to enable the ESP serial flasher library.
+
+config ESP_SERIAL_FLASHER_UART_BUFSIZE
+    int "ESP Serial Flasher UART buffer size"
+    default 512
+    help
+      Buffer size for UART TX and RX packets
+
+if ESP_SERIAL_FLASHER
+    rsource "../Kconfig"
+endif
--- a/applications/external/esp_flasher/lib/esp-serial-flasher/zephyr/module.yml
+++ b/applications/external/esp_flasher/lib/esp-serial-flasher/zephyr/module.yml
@@ -0,0 +1,5 @@
+name: esp-flasher
+
+build:
+  cmake: zephyr
+  kconfig: zephyr/Kconfig
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene.c
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene.c
@@ -0,0 +1,30 @@
+#include "esp_flasher_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const esp_flasher_scene_on_enter_handlers[])(void*) = {
+#include "esp_flasher_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const esp_flasher_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "esp_flasher_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const esp_flasher_scene_on_exit_handlers[])(void* context) = {
+#include "esp_flasher_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers esp_flasher_scene_handlers = {
+    .on_enter_handlers = esp_flasher_scene_on_enter_handlers,
+    .on_event_handlers = esp_flasher_scene_on_event_handlers,
+    .on_exit_handlers = esp_flasher_scene_on_exit_handlers,
+    .scene_num = EspFlasherSceneNum,
+};
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene.h
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) EspFlasherScene##id,
+typedef enum {
+#include "esp_flasher_scene_config.h"
+    EspFlasherSceneNum,
+} EspFlasherScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers esp_flasher_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "esp_flasher_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "esp_flasher_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "esp_flasher_scene_config.h"
+#undef ADD_SCENE
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene_about.c
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene_about.c
@@ -0,0 +1,56 @@
+#include "../esp_flasher_app_i.h"
+
+void esp_flasher_scene_about_widget_callback(GuiButtonType result, InputType type, void* context) {
+    EspFlasherApp* app = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(app->view_dispatcher, result);
+    }
+}
+
+#define ESP_FLASHER_APP_DESCRIPTION                     \
+    "\e#Information\nVersion: " ESP_FLASHER_APP_VERSION \
+    "\nDeveloped by: 0xchocolate\n(@cococode on discord) using espressif's esp-serial-flasher library\nGithub: https://github.com/0xchocolate/flipperzero-esp-flasher\n\n\e#Description\nApp to flash ESP chips from\nthe flipper (over UART) using\nbin files on the sd card.\nReset the chip into bootloader\nmode before flashing.\n\n Supported targets:\n- ESP32\n- ESP8266\n- ESP32-S2\n- ESP32-S3\n- ESP32-C3\n- ESP32-C2\n- ESP32-H2"
+
+void esp_flasher_scene_about_on_enter(void* context) {
+    EspFlasherApp* app = context;
+
+    widget_add_text_box_element(
+        app->widget,
+        0,
+        0,
+        128,
+        14,
+        AlignCenter,
+        AlignBottom,
+        "\e#\e!                                                      \e!\n",
+        false);
+    widget_add_text_box_element(
+        app->widget,
+        0,
+        2,
+        128,
+        14,
+        AlignCenter,
+        AlignBottom,
+        "\e#\e!        ESP Flasher       \e!\n",
+        false);
+    widget_add_text_scroll_element(app->widget, 0, 16, 128, 50, ESP_FLASHER_APP_DESCRIPTION);
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, EspFlasherAppViewWidget);
+}
+
+bool esp_flasher_scene_about_on_event(void* context, SceneManagerEvent event) {
+    EspFlasherApp* app = context;
+    bool consumed = false;
+    UNUSED(app);
+    UNUSED(event);
+
+    return consumed;
+}
+
+void esp_flasher_scene_about_on_exit(void* context) {
+    EspFlasherApp* app = context;
+
+    // Clear views
+    widget_reset(app->widget);
+}
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene_browse.c
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene_browse.c
@@ -0,0 +1,266 @@
+#include "../esp_flasher_app_i.h"
+#include "../esp_flasher_worker.h"
+
+enum SubmenuIndex {
+    SubmenuIndexS3Mode,
+    SubmenuIndexBoot,
+    SubmenuIndexPart,
+    SubmenuIndexNvs,
+    SubmenuIndexBootApp0,
+    SubmenuIndexApp,
+    SubmenuIndexCustom,
+    SubmenuIndexFlash,
+};
+
+static void esp_flasher_scene_browse_callback(void* context, uint32_t index) {
+    EspFlasherApp* app = context;
+
+    scene_manager_set_scene_state(app->scene_manager, EspFlasherSceneBrowse, index);
+
+    // browse for files
+    FuriString* predefined_filepath = furi_string_alloc_set_str(ESP_APP_FOLDER);
+    FuriString* selected_filepath = furi_string_alloc();
+    DialogsFileBrowserOptions browser_options;
+    dialog_file_browser_set_basic_options(&browser_options, ".bin", &I_Text_10x10);
+
+    // TODO refactor
+    switch(index) {
+    case SubmenuIndexS3Mode:
+        // toggle S3 mode
+        app->selected_flash_options[SelectedFlashS3Mode] =
+            !app->selected_flash_options[SelectedFlashS3Mode];
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexBoot:
+        app->selected_flash_options[SelectedFlashBoot] =
+            !app->selected_flash_options[SelectedFlashBoot];
+        if(app->selected_flash_options[SelectedFlashBoot]) {
+            if(dialog_file_browser_show(
+                   app->dialogs, selected_filepath, predefined_filepath, &browser_options)) {
+                strncpy(
+                    app->bin_file_path_boot,
+                    furi_string_get_cstr(selected_filepath),
+                    sizeof(app->bin_file_path_boot));
+            }
+        }
+        if(app->bin_file_path_boot[0] == '\0') {
+            // if user didn't select a file, leave unselected
+            app->selected_flash_options[SelectedFlashBoot] = false;
+        }
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexPart:
+        app->selected_flash_options[SelectedFlashPart] =
+            !app->selected_flash_options[SelectedFlashPart];
+        if(dialog_file_browser_show(
+               app->dialogs, selected_filepath, predefined_filepath, &browser_options)) {
+            strncpy(
+                app->bin_file_path_part,
+                furi_string_get_cstr(selected_filepath),
+                sizeof(app->bin_file_path_part));
+        }
+        if(app->bin_file_path_part[0] == '\0') {
+            // if user didn't select a file, leave unselected
+            app->selected_flash_options[SelectedFlashPart] = false;
+        }
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexNvs:
+        app->selected_flash_options[SelectedFlashNvs] =
+            !app->selected_flash_options[SelectedFlashNvs];
+        if(dialog_file_browser_show(
+               app->dialogs, selected_filepath, predefined_filepath, &browser_options)) {
+            strncpy(
+                app->bin_file_path_nvs,
+                furi_string_get_cstr(selected_filepath),
+                sizeof(app->bin_file_path_nvs));
+        }
+        if(app->bin_file_path_nvs[0] == '\0') {
+            // if user didn't select a file, leave unselected
+            app->selected_flash_options[SelectedFlashNvs] = false;
+        }
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexBootApp0:
+        app->selected_flash_options[SelectedFlashBootApp0] =
+            !app->selected_flash_options[SelectedFlashBootApp0];
+        if(dialog_file_browser_show(
+               app->dialogs, selected_filepath, predefined_filepath, &browser_options)) {
+            strncpy(
+                app->bin_file_path_boot_app0,
+                furi_string_get_cstr(selected_filepath),
+                sizeof(app->bin_file_path_boot_app0));
+        }
+        if(app->bin_file_path_boot_app0[0] == '\0') {
+            // if user didn't select a file, leave unselected
+            app->selected_flash_options[SelectedFlashBootApp0] = false;
+        }
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexApp:
+        app->selected_flash_options[SelectedFlashApp] =
+            !app->selected_flash_options[SelectedFlashApp];
+        if(dialog_file_browser_show(
+               app->dialogs, selected_filepath, predefined_filepath, &browser_options)) {
+            strncpy(
+                app->bin_file_path_app,
+                furi_string_get_cstr(selected_filepath),
+                sizeof(app->bin_file_path_app));
+        }
+        if(app->bin_file_path_app[0] == '\0') {
+            // if user didn't select a file, leave unselected
+            app->selected_flash_options[SelectedFlashApp] = false;
+        }
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexCustom:
+        app->selected_flash_options[SelectedFlashCustom] =
+            !app->selected_flash_options[SelectedFlashCustom];
+        if(dialog_file_browser_show(
+               app->dialogs, selected_filepath, predefined_filepath, &browser_options)) {
+            strncpy(
+                app->bin_file_path_custom,
+                furi_string_get_cstr(selected_filepath),
+                sizeof(app->bin_file_path_custom));
+        }
+        if(app->bin_file_path_custom[0] == '\0') {
+            // if user didn't select a file, leave unselected
+            app->selected_flash_options[SelectedFlashCustom] = false;
+        }
+        view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshSubmenu);
+        break;
+    case SubmenuIndexFlash:
+        // count how many options are selected
+        app->num_selected_flash_options = 0;
+        for(bool* option = &app->selected_flash_options[SelectedFlashBoot];
+            option < &app->selected_flash_options[NUM_FLASH_OPTIONS];
+            ++option) {
+            if(*option) {
+                ++app->num_selected_flash_options;
+            }
+        }
+        if(app->num_selected_flash_options) {
+            // only start next scene if at least one option is selected
+            scene_manager_next_scene(app->scene_manager, EspFlasherSceneConsoleOutput);
+        }
+        break;
+    }
+
+    furi_string_free(selected_filepath);
+    furi_string_free(predefined_filepath);
+}
+
+#define STR_SELECT "[x]"
+#define STR_UNSELECT "[ ]"
+#define STR_BOOT "Bootloader (" TOSTRING(ESP_ADDR_BOOT) ")"
+#define STR_BOOT_S3 "Bootloader (" TOSTRING(ESP_ADDR_BOOT_S3) ")"
+#define STR_PART "Part Table (" TOSTRING(ESP_ADDR_PART) ")"
+#define STR_NVS "NVS (" TOSTRING(ESP_ADDR_NVS) ")"
+#define STR_BOOT_APP0 "boot_app0 (" TOSTRING(ESP_ADDR_BOOT_APP0) ")"
+#define STR_APP "Firmware (" TOSTRING(ESP_ADDR_APP) ")"
+#define STR_CUSTOM "Custom"
+#define STR_FLASH_S3 "[>] FLASH (ESP32-S3)"
+#define STR_FLASH "[>] FLASH"
+static void _refresh_submenu(EspFlasherApp* app) {
+    Submenu* submenu = app->submenu;
+
+    submenu_reset(app->submenu);
+
+    submenu_set_header(submenu, "Browse for files to flash");
+    submenu_add_item(
+        submenu,
+        app->selected_flash_options[SelectedFlashS3Mode] ? "[x] Using ESP32-S3" :
+                                                           "[ ] Select if using S3",
+        SubmenuIndexS3Mode,
+        esp_flasher_scene_browse_callback,
+        app);
+    const char* strSelectBootloader = STR_UNSELECT " " STR_BOOT;
+    if(app->selected_flash_options[SelectedFlashS3Mode]) {
+        if(app->selected_flash_options[SelectedFlashBoot]) {
+            strSelectBootloader = STR_SELECT " " STR_BOOT_S3;
+        } else {
+            strSelectBootloader = STR_UNSELECT " " STR_BOOT_S3;
+        }
+    } else {
+        if(app->selected_flash_options[SelectedFlashBoot]) {
+            strSelectBootloader = STR_SELECT " " STR_BOOT;
+        } else {
+            strSelectBootloader = STR_UNSELECT " " STR_BOOT;
+        }
+    }
+    submenu_add_item(
+        submenu, strSelectBootloader, SubmenuIndexBoot, esp_flasher_scene_browse_callback, app);
+    submenu_add_item(
+        submenu,
+        app->selected_flash_options[SelectedFlashPart] ? STR_SELECT " " STR_PART :
+                                                         STR_UNSELECT " " STR_PART,
+        SubmenuIndexPart,
+        esp_flasher_scene_browse_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        app->selected_flash_options[SelectedFlashNvs] ? STR_SELECT " " STR_NVS :
+                                                        STR_UNSELECT " " STR_NVS,
+        SubmenuIndexNvs,
+        esp_flasher_scene_browse_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        app->selected_flash_options[SelectedFlashBootApp0] ? STR_SELECT " " STR_BOOT_APP0 :
+                                                             STR_UNSELECT " " STR_BOOT_APP0,
+        SubmenuIndexBootApp0,
+        esp_flasher_scene_browse_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        app->selected_flash_options[SelectedFlashApp] ? STR_SELECT " " STR_APP :
+                                                        STR_UNSELECT " " STR_APP,
+        SubmenuIndexApp,
+        esp_flasher_scene_browse_callback,
+        app);
+    // TODO: custom addr
+    //submenu_add_item(
+    //    submenu, app->selected_flash_options[SelectedFlashCustom] ? STR_SELECT " " STR_CUSTOM : STR_UNSELECT " " STR_CUSTOM, SubmenuIndexCustom, esp_flasher_scene_browse_callback, app);
+    submenu_add_item(
+        submenu,
+        app->selected_flash_options[SelectedFlashS3Mode] ? STR_FLASH_S3 : STR_FLASH,
+        SubmenuIndexFlash,
+        esp_flasher_scene_browse_callback,
+        app);
+
+    submenu_set_selected_item(
+        submenu, scene_manager_get_scene_state(app->scene_manager, EspFlasherSceneBrowse));
+    view_dispatcher_switch_to_view(app->view_dispatcher, EspFlasherAppViewSubmenu);
+}
+
+void esp_flasher_scene_browse_on_enter(void* context) {
+    EspFlasherApp* app = context;
+
+    memset(app->selected_flash_options, 0, sizeof(app->selected_flash_options));
+    app->bin_file_path_boot[0] = '\0';
+    app->bin_file_path_part[0] = '\0';
+    app->bin_file_path_nvs[0] = '\0';
+    app->bin_file_path_boot_app0[0] = '\0';
+    app->bin_file_path_app[0] = '\0';
+    app->bin_file_path_custom[0] = '\0';
+
+    _refresh_submenu(app);
+}
+
+bool esp_flasher_scene_browse_on_event(void* context, SceneManagerEvent event) {
+    EspFlasherApp* app = context;
+    bool consumed = false;
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == EspFlasherEventRefreshSubmenu) {
+            _refresh_submenu(app);
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void esp_flasher_scene_browse_on_exit(void* context) {
+    EspFlasherApp* app = context;
+    submenu_reset(app->submenu);
+}
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene_config.h
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene_config.h
@@ -0,0 +1,5 @@
+ADD_SCENE(esp_flasher, start, Start)
+ADD_SCENE(esp_flasher, devboard, Devboard)
+ADD_SCENE(esp_flasher, console_output, ConsoleOutput)
+ADD_SCENE(esp_flasher, about, About)
+ADD_SCENE(esp_flasher, browse, Browse)
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene_console_output.c
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene_console_output.c
@@ -0,0 +1,77 @@
+#include "../esp_flasher_app_i.h"
+
+#include "../esp_flasher_worker.h"
+
+void esp_flasher_console_output_handle_rx_data_cb(uint8_t* buf, size_t len, void* context) {
+    furi_assert(context);
+    EspFlasherApp* app = context;
+
+    // If text box store gets too big, then truncate it
+    app->text_box_store_strlen += len;
+    if(app->text_box_store_strlen >= ESP_FLASHER_TEXT_BOX_STORE_SIZE - 1) {
+        furi_string_right(app->text_box_store, app->text_box_store_strlen / 2);
+        app->text_box_store_strlen = furi_string_size(app->text_box_store) + len;
+    }
+
+    // Null-terminate buf and append to text box store
+    buf[len] = '\0';
+    furi_string_cat_printf(app->text_box_store, "%s", buf);
+    view_dispatcher_send_custom_event(app->view_dispatcher, EspFlasherEventRefreshConsoleOutput);
+}
+
+void esp_flasher_scene_console_output_on_enter(void* context) {
+    EspFlasherApp* app = context;
+
+    // Reset text box and set font
+    TextBox* text_box = app->text_box;
+    text_box_reset(text_box);
+    text_box_set_font(text_box, TextBoxFontText);
+
+    // Set focus on end
+    text_box_set_focus(text_box, TextBoxFocusEnd);
+
+    // Set starting text
+    text_box_set_text(app->text_box, furi_string_get_cstr(app->text_box_store));
+
+    // Set scene state and switch view
+    scene_manager_set_scene_state(app->scene_manager, EspFlasherSceneConsoleOutput, 0);
+    view_dispatcher_switch_to_view(app->view_dispatcher, EspFlasherAppViewConsoleOutput);
+
+    // Register callbacks to receive data
+    // setup callback for general log rx thread
+    esp_flasher_uart_set_handle_rx_data_cb(
+        app->uart,
+        esp_flasher_worker_handle_rx_data_cb); // setup callback for general log rx thread
+
+    // Start flash worker
+    esp_flasher_worker_start_thread(app);
+}
+
+bool esp_flasher_scene_console_output_on_event(void* context, SceneManagerEvent event) {
+    EspFlasherApp* app = context;
+
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        text_box_set_text(app->text_box, furi_string_get_cstr(app->text_box_store));
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+        consumed = true;
+    } else {
+        if(app->flash_worker_busy) {
+            // ignore button presses while flashing
+            consumed = true;
+        }
+    }
+
+    return consumed;
+}
+
+void esp_flasher_scene_console_output_on_exit(void* context) {
+    EspFlasherApp* app = context;
+
+    esp_flasher_worker_stop_thread(app);
+
+    // Unregister rx callback
+    esp_flasher_uart_set_handle_rx_data_cb(app->uart, NULL);
+}
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene_devboard.c
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene_devboard.c
@@ -0,0 +1,86 @@
+#include "../esp_flasher_app_i.h"
+
+enum SubmenuIndex {
+    SubmenuIndexBlackMagic,
+    SubmenuIndexEvilPortal,
+    SubmenuIndexMarauder,
+};
+
+void esp_flasher_scene_devboard_submenu_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    EspFlasherApp* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void esp_flasher_scene_devboard_on_enter(void* context) {
+    furi_assert(context);
+
+    EspFlasherApp* app = context;
+    Submenu* submenu = app->submenu;
+    submenu_set_header(submenu, "Select Firmware to flash");
+    submenu_add_item(
+        submenu,
+        "Black Magic",
+        SubmenuIndexBlackMagic,
+        esp_flasher_scene_devboard_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "Evil Portal",
+        SubmenuIndexEvilPortal,
+        esp_flasher_scene_devboard_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "Marauder",
+        SubmenuIndexMarauder,
+        esp_flasher_scene_devboard_submenu_callback,
+        app);
+
+    submenu_set_selected_item(
+        submenu, scene_manager_get_scene_state(app->scene_manager, EspFlasherSceneDevboard));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, EspFlasherAppViewSubmenu);
+}
+
+bool esp_flasher_scene_devboard_on_event(void* context, SceneManagerEvent event) {
+    furi_assert(context);
+
+    EspFlasherApp* app = context;
+    bool consumed = false;
+    if(event.type == SceneManagerEventTypeCustom) {
+        const char* path = NULL;
+        consumed = true;
+        switch(event.event) {
+        case SubmenuIndexBlackMagic:
+            path = APP_DATA_PATH("Black_Magic.bin");
+            break;
+        case SubmenuIndexEvilPortal:
+            path = APP_DATA_PATH("Evil_Portal.bin");
+            break;
+        case SubmenuIndexMarauder:
+            path = APP_DATA_PATH("Marauder.bin");
+            break;
+        default:
+            consumed = false;
+            break;
+        }
+
+        if(consumed) {
+            app->selected_flash_options[SelectedFlashBoot] = true;
+            strncpy(app->bin_file_path_boot, path, sizeof(app->bin_file_path_boot));
+            scene_manager_next_scene(app->scene_manager, EspFlasherSceneConsoleOutput);
+        }
+        scene_manager_set_scene_state(app->scene_manager, EspFlasherSceneDevboard, event.event);
+    }
+
+    return consumed;
+}
+
+void esp_flasher_scene_devboard_on_exit(void* context) {
+    furi_assert(context);
+
+    EspFlasherApp* app = context;
+    submenu_reset(app->submenu);
+}
--- a/applications/external/esp_flasher/scenes/esp_flasher_scene_start.c
+++ b/applications/external/esp_flasher/scenes/esp_flasher_scene_start.c
@@ -0,0 +1,73 @@
+#include "../esp_flasher_app_i.h"
+
+enum SubmenuIndex {
+    SubmenuIndexEspFlasherDevboardFlash,
+    SubmenuIndexEspFlasherFlash,
+    SubmenuIndexEspFlasherAbout,
+};
+
+void esp_flasher_scene_start_submenu_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    EspFlasherApp* app = context;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, index);
+}
+
+void esp_flasher_scene_start_on_enter(void* context) {
+    furi_assert(context);
+
+    EspFlasherApp* app = context;
+    Submenu* submenu = app->submenu;
+    submenu_add_item(
+        submenu,
+        "Flash Wifi Devboard",
+        SubmenuIndexEspFlasherDevboardFlash,
+        esp_flasher_scene_start_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "Flash Generic ESP",
+        SubmenuIndexEspFlasherFlash,
+        esp_flasher_scene_start_submenu_callback,
+        app);
+    submenu_add_item(
+        submenu,
+        "About",
+        SubmenuIndexEspFlasherAbout,
+        esp_flasher_scene_start_submenu_callback,
+        app);
+
+    submenu_set_selected_item(
+        submenu, scene_manager_get_scene_state(app->scene_manager, EspFlasherSceneStart));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, EspFlasherAppViewSubmenu);
+}
+
+bool esp_flasher_scene_start_on_event(void* context, SceneManagerEvent event) {
+    furi_assert(context);
+
+    EspFlasherApp* app = context;
+    bool consumed = false;
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == SubmenuIndexEspFlasherDevboardFlash) {
+            scene_manager_next_scene(app->scene_manager, EspFlasherSceneDevboard);
+            consumed = true;
+        } else if(event.event == SubmenuIndexEspFlasherFlash) {
+            scene_manager_next_scene(app->scene_manager, EspFlasherSceneBrowse);
+            consumed = true;
+        } else if(event.event == SubmenuIndexEspFlasherAbout) {
+            scene_manager_next_scene(app->scene_manager, EspFlasherSceneAbout);
+            consumed = true;
+        }
+        scene_manager_set_scene_state(app->scene_manager, EspFlasherSceneStart, event.event);
+    }
+
+    return consumed;
+}
+
+void esp_flasher_scene_start_on_exit(void* context) {
+    furi_assert(context);
+
+    EspFlasherApp* app = context;
+    submenu_reset(app->submenu);
+}
--- a/applications/external/esp_flasher/wifi_10px.png
+++ b/applications/external/esp_flasher/wifi_10px.png
--- a/applications/external/evil_portal/application.fam
+++ b/applications/external/evil_portal/application.fam
@@ -0,0 +1,12 @@
+App(
+    appid="evil_portal",
+    name="[ESP32] Evil Portal",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="evil_portal_app",
+    cdefines=["APP_EVIL_PORTAL"],
+    requires=["gui"],
+    stack_size=1 * 1024,
+    order=90,
+    fap_icon="icons/evil_portal_10px.png",
+    fap_category="WiFi",
+)
--- a/applications/external/evil_portal/evil_portal_app.c
+++ b/applications/external/evil_portal/evil_portal_app.c
@@ -0,0 +1,117 @@
+#include "evil_portal_app_i.h"
+#include "helpers/evil_portal_storage.h"
+
+#include <furi.h>
+#include <furi_hal.h>
+
+static bool evil_portal_app_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    Evil_PortalApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool evil_portal_app_back_event_callback(void* context) {
+    furi_assert(context);
+    Evil_PortalApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void evil_portal_app_tick_event_callback(void* context) {
+    furi_assert(context);
+    Evil_PortalApp* app = context;
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+Evil_PortalApp* evil_portal_app_alloc() {
+    Evil_PortalApp* app = malloc(sizeof(Evil_PortalApp));
+
+    app->sent_html = false;
+    app->sent_ap = false;
+    app->sent_reset = false;
+    app->has_command_queue = false;
+    app->command_index = 0;
+    app->portal_logs = furi_string_alloc();
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->dialogs = furi_record_open(RECORD_DIALOGS);
+
+    app->view_dispatcher = view_dispatcher_alloc();
+    app->scene_manager = scene_manager_alloc(&evil_portal_scene_handlers, app);
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, evil_portal_app_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, evil_portal_app_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, evil_portal_app_tick_event_callback, 100);
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    app->var_item_list = variable_item_list_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        Evil_PortalAppViewVarItemList,
+        variable_item_list_get_view(app->var_item_list));
+
+    for(int i = 0; i < NUM_MENU_ITEMS; ++i) {
+        app->selected_option_index[i] = 0;
+    }
+
+    app->text_box = text_box_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher, Evil_PortalAppViewConsoleOutput, text_box_get_view(app->text_box));
+    app->text_box_store = furi_string_alloc();
+    furi_string_reserve(app->text_box_store, EVIL_PORTAL_TEXT_BOX_STORE_SIZE);
+
+    scene_manager_next_scene(app->scene_manager, Evil_PortalSceneStart);
+
+    return app;
+}
+
+void evil_portal_app_free(Evil_PortalApp* app) {
+    // save latest logs
+    if(furi_string_utf8_length(app->portal_logs) > 0) {
+        write_logs(app->portal_logs);
+        furi_string_free(app->portal_logs);
+    }
+
+    // Send reset event to dev board
+    evil_portal_uart_tx((uint8_t*)(RESET_CMD), strlen(RESET_CMD));
+    evil_portal_uart_tx((uint8_t*)("\n"), 1);
+
+    furi_assert(app);
+
+    // Views
+    view_dispatcher_remove_view(app->view_dispatcher, Evil_PortalAppViewVarItemList);
+    view_dispatcher_remove_view(app->view_dispatcher, Evil_PortalAppViewConsoleOutput);
+
+    text_box_free(app->text_box);
+    furi_string_free(app->text_box_store);
+
+    // View dispatcher
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    evil_portal_uart_free(app->uart);
+
+    // Close records
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_DIALOGS);
+
+    free(app);
+}
+
+int32_t evil_portal_app(void* p) {
+    UNUSED(p);
+    Evil_PortalApp* evil_portal_app = evil_portal_app_alloc();
+
+    evil_portal_app->uart = evil_portal_uart_init(evil_portal_app);
+
+    view_dispatcher_run(evil_portal_app->view_dispatcher);
+
+    evil_portal_app_free(evil_portal_app);
+
+    return 0;
+}
--- a/applications/external/evil_portal/evil_portal_app.h
+++ b/applications/external/evil_portal/evil_portal_app.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct Evil_PortalApp Evil_PortalApp;
+
+#ifdef __cplusplus
+}
+#endif
--- a/applications/external/evil_portal/evil_portal_app_i.h
+++ b/applications/external/evil_portal/evil_portal_app_i.h
@@ -0,0 +1,67 @@
+#pragma once
+
+#include "evil_portal_app.h"
+#include "evil_portal_custom_event.h"
+#include "evil_portal_uart.h"
+#include "scenes/evil_portal_scene.h"
+
+#include <gui/gui.h>
+#include <gui/modules/text_box.h>
+#include <gui/modules/variable_item_list.h>
+#include <gui/scene_manager.h>
+#include <gui/view_dispatcher.h>
+
+#include <assets_icons.h>
+#include <dialogs/dialogs.h>
+
+#define NUM_MENU_ITEMS (4)
+
+#define EVIL_PORTAL_TEXT_BOX_STORE_SIZE (4096)
+#define UART_CH (FuriHalUartIdUSART1)
+
+#define SET_HTML_CMD "sethtml"
+#define SET_AP_CMD "setap"
+#define RESET_CMD "reset"
+
+#define EVIL_PORTAL_INDEX_EXTENSION ".html"
+#define EVIL_PORTAL_BASE_FOLDER STORAGE_APP_DATA_PATH_PREFIX
+
+struct Evil_PortalApp {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+    DialogsApp* dialogs;
+
+    FuriString* portal_logs;
+    const char* command_queue[1];
+    int command_index;
+    bool has_command_queue;
+
+    FuriString* text_box_store;
+    size_t text_box_store_strlen;
+    TextBox* text_box;
+
+    VariableItemList* var_item_list;
+    Evil_PortalUart* uart;
+
+    int selected_menu_index;
+    int selected_option_index[NUM_MENU_ITEMS];
+    const char* selected_tx_string;
+    bool is_command;
+    bool is_custom_tx_string;
+    bool focus_console_start;
+    bool show_stopscan_tip;
+    bool sent_ap;
+    bool sent_html;
+    bool sent_reset;
+    int BAUDRATE;
+
+    uint8_t* index_html;
+    uint8_t* ap_name;
+};
+
+typedef enum {
+    Evil_PortalAppViewVarItemList,
+    Evil_PortalAppViewConsoleOutput,
+    Evil_PortalAppViewStartPortal,
+} Evil_PortalAppView;
--- a/applications/external/evil_portal/evil_portal_custom_event.h
+++ b/applications/external/evil_portal/evil_portal_custom_event.h
@@ -0,0 +1,8 @@
+#pragma once
+
+typedef enum {
+    Evil_PortalEventRefreshConsoleOutput = 0,
+    Evil_PortalEventStartConsole,
+    Evil_PortalEventStartKeyboard,
+    Evil_PortalEventStartPortal,
+} Evil_PortalCustomEvent;
--- a/applications/external/evil_portal/evil_portal_uart.c
+++ b/applications/external/evil_portal/evil_portal_uart.c
@@ -0,0 +1,145 @@
+#include "evil_portal_app_i.h"
+#include "evil_portal_uart.h"
+#include "helpers/evil_portal_storage.h"
+
+struct Evil_PortalUart {
+    Evil_PortalApp* app;
+    FuriThread* rx_thread;
+    FuriStreamBuffer* rx_stream;
+    uint8_t rx_buf[RX_BUF_SIZE + 1];
+    void (*handle_rx_data_cb)(uint8_t* buf, size_t len, void* context);
+};
+
+typedef enum {
+    WorkerEvtStop = (1 << 0),
+    WorkerEvtRxDone = (1 << 1),
+} WorkerEvtFlags;
+
+void evil_portal_uart_set_handle_rx_data_cb(
+    Evil_PortalUart* uart,
+    void (*handle_rx_data_cb)(uint8_t* buf, size_t len, void* context)) {
+    furi_assert(uart);
+    uart->handle_rx_data_cb = handle_rx_data_cb;
+}
+
+#define WORKER_ALL_RX_EVENTS (WorkerEvtStop | WorkerEvtRxDone)
+
+void evil_portal_uart_on_irq_cb(UartIrqEvent ev, uint8_t data, void* context) {
+    Evil_PortalUart* uart = (Evil_PortalUart*)context;
+
+    if(ev == UartIrqEventRXNE) {
+        furi_stream_buffer_send(uart->rx_stream, &data, 1, 0);
+        furi_thread_flags_set(furi_thread_get_id(uart->rx_thread), WorkerEvtRxDone);
+    }
+}
+
+static int32_t uart_worker(void* context) {
+    Evil_PortalUart* uart = (void*)context;
+
+    while(1) {
+        uint32_t events =
+            furi_thread_flags_wait(WORKER_ALL_RX_EVENTS, FuriFlagWaitAny, FuriWaitForever);
+        furi_check((events & FuriFlagError) == 0);
+        if(events & WorkerEvtStop) break;
+        if(events & WorkerEvtRxDone) {
+            size_t len = furi_stream_buffer_receive(uart->rx_stream, uart->rx_buf, RX_BUF_SIZE, 0);
+
+            if(len > 0) {
+                if(uart->handle_rx_data_cb) {
+                    uart->handle_rx_data_cb(uart->rx_buf, len, uart->app);
+
+                    if(uart->app->has_command_queue) {
+                        if(uart->app->command_index < 1) {
+                            if(0 == strncmp(
+                                        SET_AP_CMD,
+                                        uart->app->command_queue[uart->app->command_index],
+                                        strlen(SET_AP_CMD))) {
+                                FuriString* out_data = furi_string_alloc();
+
+                                furi_string_cat(out_data, "setap=");
+                                furi_string_cat(out_data, (char*)uart->app->ap_name);
+
+                                evil_portal_uart_tx(
+                                    (uint8_t*)(furi_string_get_cstr(out_data)),
+                                    strlen(furi_string_get_cstr(out_data)));
+                                evil_portal_uart_tx((uint8_t*)("\n"), 1);
+
+                                uart->app->sent_ap = true;
+
+                                free(out_data);
+                                free(uart->app->ap_name);
+                            }
+
+                            uart->app->command_index = 0;
+                            uart->app->has_command_queue = false;
+                            uart->app->command_queue[0] = "";
+                        }
+                    }
+
+                    if(uart->app->sent_reset == false) {
+                        furi_string_cat(uart->app->portal_logs, (char*)uart->rx_buf);
+                    }
+
+                    if(furi_string_utf8_length(uart->app->portal_logs) > 4000) {
+                        write_logs(uart->app->portal_logs);
+                        furi_string_reset(uart->app->portal_logs);
+                    }
+                } else {
+                    uart->rx_buf[len] = '\0';
+                    if(uart->app->sent_reset == false) {
+                        furi_string_cat(uart->app->portal_logs, (char*)uart->rx_buf);
+                    }
+
+                    if(furi_string_utf8_length(uart->app->portal_logs) > 4000) {
+                        write_logs(uart->app->portal_logs);
+                        furi_string_reset(uart->app->portal_logs);
+                    }
+                }
+            }
+        }
+    }
+
+    furi_stream_buffer_free(uart->rx_stream);
+
+    return 0;
+}
+
+void evil_portal_uart_tx(uint8_t* data, size_t len) {
+    furi_hal_uart_tx(UART_CH, data, len);
+}
+
+Evil_PortalUart* evil_portal_uart_init(Evil_PortalApp* app) {
+    Evil_PortalUart* uart = malloc(sizeof(Evil_PortalUart));
+    uart->app = app;
+    // Init all rx stream and thread early to avoid crashes
+    uart->rx_stream = furi_stream_buffer_alloc(RX_BUF_SIZE, 1);
+    uart->rx_thread = furi_thread_alloc();
+    furi_thread_set_name(uart->rx_thread, "Evil_PortalUartRxThread");
+    furi_thread_set_stack_size(uart->rx_thread, 1024);
+    furi_thread_set_context(uart->rx_thread, uart);
+    furi_thread_set_callback(uart->rx_thread, uart_worker);
+
+    furi_thread_start(uart->rx_thread);
+
+    furi_hal_console_disable();
+    if(app->BAUDRATE == 0) {
+        app->BAUDRATE = 115200;
+    }
+    furi_hal_uart_set_br(UART_CH, app->BAUDRATE);
+    furi_hal_uart_set_irq_cb(UART_CH, evil_portal_uart_on_irq_cb, uart);
+
+    return uart;
+}
+
+void evil_portal_uart_free(Evil_PortalUart* uart) {
+    furi_assert(uart);
+
+    furi_thread_flags_set(furi_thread_get_id(uart->rx_thread), WorkerEvtStop);
+    furi_thread_join(uart->rx_thread);
+    furi_thread_free(uart->rx_thread);
+
+    furi_hal_uart_set_irq_cb(UART_CH, NULL, NULL);
+    furi_hal_console_enable();
+
+    free(uart);
+}
--- a/applications/external/evil_portal/evil_portal_uart.h
+++ b/applications/external/evil_portal/evil_portal_uart.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "furi_hal.h"
+
+#define RX_BUF_SIZE (320)
+
+typedef struct Evil_PortalUart Evil_PortalUart;
+
+void evil_portal_uart_set_handle_rx_data_cb(
+    Evil_PortalUart* uart,
+    void (*handle_rx_data_cb)(uint8_t* buf, size_t len, void* context));
+void evil_portal_uart_tx(uint8_t* data, size_t len);
+Evil_PortalUart* evil_portal_uart_init(Evil_PortalApp* app);
+void evil_portal_uart_free(Evil_PortalUart* uart);
--- a/applications/external/evil_portal/helpers/evil_portal_storage.c
+++ b/applications/external/evil_portal/helpers/evil_portal_storage.c
@@ -0,0 +1,135 @@
+#include "evil_portal_storage.h"
+
+static Storage* evil_portal_open_storage() {
+    return furi_record_open(RECORD_STORAGE);
+}
+
+static void evil_portal_close_storage() {
+    furi_record_close(RECORD_STORAGE);
+}
+
+bool evil_portal_read_index_html(void* context) {
+    FuriString* file_path = furi_string_alloc_set(EVIL_PORTAL_BASE_FOLDER);
+
+    DialogsFileBrowserOptions browser_options;
+    dialog_file_browser_set_basic_options(
+        &browser_options,
+        EVIL_PORTAL_INDEX_EXTENSION,
+        NULL); // TODO configure icon
+    browser_options.base_path = EVIL_PORTAL_BASE_FOLDER;
+
+    Evil_PortalApp* app = context;
+    bool res = dialog_file_browser_show(app->dialogs, file_path, file_path, &browser_options);
+
+    if(!res) {
+        furi_string_free(file_path);
+        return false;
+    }
+
+    Storage* storage = evil_portal_open_storage();
+    FileInfo fi;
+
+    if(storage_common_stat(storage, furi_string_get_cstr(file_path), &fi) == FSE_OK) {
+        File* index_html = storage_file_alloc(storage);
+        if(storage_file_open(
+               index_html, furi_string_get_cstr(file_path), FSAM_READ, FSOM_OPEN_EXISTING)) {
+            app->index_html = malloc((size_t)fi.size);
+            uint8_t* buf_ptr = app->index_html;
+            size_t read = 0;
+            while(read < fi.size) {
+                size_t to_read = fi.size - read;
+                if(to_read > UINT16_MAX) to_read = UINT16_MAX;
+                uint16_t now_read = storage_file_read(index_html, buf_ptr, (uint16_t)to_read);
+                read += now_read;
+                buf_ptr += now_read;
+            }
+            free(buf_ptr);
+        }
+        furi_string_free(file_path);
+        storage_file_close(index_html);
+        storage_file_free(index_html);
+    } else {
+        char* html_error = "<b>Evil portal</b><br>Unable to read the html file.<br>"
+                           "Is the SD Card set up correctly? <br>See instructions @ "
+                           "github.com/bigbrodude6119/flipper-zero-evil-portal<br>"
+                           "Under the 'Install pre-built app on the flipper' section.";
+        app->index_html = (uint8_t*)html_error;
+    }
+
+    evil_portal_close_storage();
+    return true;
+}
+
+void evil_portal_read_ap_name(void* context) {
+    Evil_PortalApp* app = context;
+    Storage* storage = evil_portal_open_storage();
+    FileInfo fi;
+
+    if(storage_common_stat(storage, EVIL_PORTAL_AP_SAVE_PATH, &fi) == FSE_OK) {
+        File* ap_name = storage_file_alloc(storage);
+        if(storage_file_open(ap_name, EVIL_PORTAL_AP_SAVE_PATH, FSAM_READ, FSOM_OPEN_EXISTING)) {
+            app->ap_name = malloc((size_t)fi.size);
+            uint8_t* buf_ptr = app->ap_name;
+            size_t read = 0;
+            while(read < fi.size) {
+                size_t to_read = fi.size - read;
+                if(to_read > UINT16_MAX) to_read = UINT16_MAX;
+                uint16_t now_read = storage_file_read(ap_name, buf_ptr, (uint16_t)to_read);
+                read += now_read;
+                buf_ptr += now_read;
+            }
+            free(buf_ptr);
+        }
+        storage_file_close(ap_name);
+        storage_file_free(ap_name);
+    } else {
+        char* app_default = "Evil Portal";
+        app->ap_name = (uint8_t*)app_default;
+    }
+    evil_portal_close_storage();
+}
+
+char* sequential_file_resolve_path(
+    Storage* storage,
+    const char* dir,
+    const char* prefix,
+    const char* extension) {
+    if(storage == NULL || dir == NULL || prefix == NULL || extension == NULL) {
+        return NULL;
+    }
+
+    char file_path[256];
+    int file_index = 0;
+
+    do {
+        if(snprintf(
+               file_path, sizeof(file_path), "%s/%s_%d.%s", dir, prefix, file_index, extension) <
+           0) {
+            return NULL;
+        }
+        file_index++;
+    } while(storage_file_exists(storage, file_path));
+
+    return strdup(file_path);
+}
+
+void write_logs(FuriString* portal_logs) {
+    Storage* storage = evil_portal_open_storage();
+
+    if(!storage_file_exists(storage, EVIL_PORTAL_LOG_SAVE_PATH)) {
+        storage_simply_mkdir(storage, EVIL_PORTAL_LOG_SAVE_PATH);
+    }
+
+    char* seq_file_path =
+        sequential_file_resolve_path(storage, EVIL_PORTAL_LOG_SAVE_PATH, "log", "txt");
+
+    File* file = storage_file_alloc(storage);
+
+    if(storage_file_open(file, seq_file_path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
+        storage_file_write(
+            file, furi_string_get_cstr(portal_logs), furi_string_utf8_length(portal_logs));
+    }
+    storage_file_close(file);
+    storage_file_free(file);
+    evil_portal_close_storage();
+}
--- a/applications/external/evil_portal/helpers/evil_portal_storage.h
+++ b/applications/external/evil_portal/helpers/evil_portal_storage.h
@@ -0,0 +1,21 @@
+#include "../evil_portal_app_i.h"
+#include <dialogs/dialogs.h>
+#include <flipper_format/flipper_format_i.h>
+#include <lib/toolbox/stream/file_stream.h>
+#include <stdlib.h>
+#include <storage/storage.h>
+#include <string.h>
+
+#define PORTAL_FILE_DIRECTORY_PATH EXT_PATH("apps_data/evil_portal")
+#define EVIL_PORTAL_INDEX_SAVE_PATH PORTAL_FILE_DIRECTORY_PATH "/index.html"
+#define EVIL_PORTAL_AP_SAVE_PATH PORTAL_FILE_DIRECTORY_PATH "/ap.config.txt"
+#define EVIL_PORTAL_LOG_SAVE_PATH PORTAL_FILE_DIRECTORY_PATH "/logs"
+
+bool evil_portal_read_index_html(void* context);
+void evil_portal_read_ap_name(void* context);
+void write_logs(FuriString* portal_logs);
+char* sequential_file_resolve_path(
+    Storage* storage,
+    const char* dir,
+    const char* prefix,
+    const char* extension);
--- a/applications/external/evil_portal/icons/evil_portal_10px.png
+++ b/applications/external/evil_portal/icons/evil_portal_10px.png
--- a/applications/external/evil_portal/scenes/evil_portal_scene.c
+++ b/applications/external/evil_portal/scenes/evil_portal_scene.c
@@ -0,0 +1,30 @@
+#include "evil_portal_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const evil_portal_scene_on_enter_handlers[])(void*) = {
+#include "evil_portal_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const evil_portal_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "evil_portal_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const evil_portal_scene_on_exit_handlers[])(void* context) = {
+#include "evil_portal_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers evil_portal_scene_handlers = {
+    .on_enter_handlers = evil_portal_scene_on_enter_handlers,
+    .on_event_handlers = evil_portal_scene_on_event_handlers,
+    .on_exit_handlers = evil_portal_scene_on_exit_handlers,
+    .scene_num = Evil_PortalSceneNum,
+};
--- a/applications/external/evil_portal/scenes/evil_portal_scene.h
+++ b/applications/external/evil_portal/scenes/evil_portal_scene.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) Evil_PortalScene##id,
+typedef enum {
+#include "evil_portal_scene_config.h"
+    Evil_PortalSceneNum,
+} Evil_PortalScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers evil_portal_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "evil_portal_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "evil_portal_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "evil_portal_scene_config.h"
+#undef ADD_SCENE
--- a/applications/external/evil_portal/scenes/evil_portal_scene_config.h
+++ b/applications/external/evil_portal/scenes/evil_portal_scene_config.h
@@ -0,0 +1,2 @@
+ADD_SCENE(evil_portal, start, Start)
+ADD_SCENE(evil_portal, console_output, ConsoleOutput)
--- a/applications/external/evil_portal/scenes/evil_portal_scene_console_output.c
+++ b/applications/external/evil_portal/scenes/evil_portal_scene_console_output.c
@@ -0,0 +1,166 @@
+#include "../evil_portal_app_i.h"
+#include "../helpers/evil_portal_storage.h"
+
+void evil_portal_console_output_handle_rx_data_cb(uint8_t* buf, size_t len, void* context) {
+    furi_assert(context);
+    Evil_PortalApp* app = context;
+
+    // If text box store gets too big, then truncate it
+    app->text_box_store_strlen += len;
+    if(app->text_box_store_strlen >= EVIL_PORTAL_TEXT_BOX_STORE_SIZE - 1) {
+        furi_string_right(app->text_box_store, app->text_box_store_strlen / 2);
+        app->text_box_store_strlen = furi_string_size(app->text_box_store) + len;
+    }
+
+    // Null-terminate buf and append to text box store
+    buf[len] = '\0';
+    furi_string_cat_printf(app->text_box_store, "%s", buf);
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, Evil_PortalEventRefreshConsoleOutput);
+}
+
+void evil_portal_scene_console_output_on_enter(void* context) {
+    Evil_PortalApp* app = context;
+
+    bool portal_file_set = false;
+
+    TextBox* text_box = app->text_box;
+    text_box_reset(app->text_box);
+    text_box_set_font(text_box, TextBoxFontText);
+    if(app->focus_console_start) {
+        text_box_set_focus(text_box, TextBoxFocusStart);
+    } else {
+        text_box_set_focus(text_box, TextBoxFocusEnd);
+    }
+
+    if(app->is_command) {
+        furi_string_reset(app->text_box_store);
+        app->text_box_store_strlen = 0;
+        app->sent_reset = false;
+
+        if(0 == strncmp("help", app->selected_tx_string, strlen("help"))) {
+            const char* help_msg = "BLUE = Waiting\nGREEN = Good\nRED = Bad\n\nThis project is a "
+                                   "WIP.\ngithub.com/bigbrodude6119/flipper-zero-evil-portal\n\n"
+                                   "Version 0.0.2\n\n";
+            furi_string_cat_str(app->text_box_store, help_msg);
+            app->text_box_store_strlen += strlen(help_msg);
+            if(app->show_stopscan_tip) {
+                const char* msg = "Press BACK to return\n";
+                furi_string_cat_str(app->text_box_store, msg);
+                app->text_box_store_strlen += strlen(msg);
+            }
+        }
+
+        if(0 == strncmp("savelogs", app->selected_tx_string, strlen("savelogs"))) {
+            const char* help_msg = "Logs saved.\n\n";
+            furi_string_cat_str(app->text_box_store, help_msg);
+            app->text_box_store_strlen += strlen(help_msg);
+            write_logs(app->portal_logs);
+            furi_string_reset(app->portal_logs);
+            if(app->show_stopscan_tip) {
+                const char* msg = "Press BACK to return\n";
+                furi_string_cat_str(app->text_box_store, msg);
+                app->text_box_store_strlen += strlen(msg);
+            }
+        }
+
+        if(0 == strncmp(SET_HTML_CMD, app->selected_tx_string, strlen(SET_HTML_CMD))) {
+            portal_file_set = evil_portal_read_index_html(context);
+
+            if(portal_file_set) {
+                app->command_queue[0] = SET_AP_CMD;
+                app->has_command_queue = true;
+                app->command_index = 0;
+                if(app->show_stopscan_tip) {
+                    const char* msg = "Starting portal\nIf no response press\nBACK to return\n";
+                    furi_string_cat_str(app->text_box_store, msg);
+                    app->text_box_store_strlen += strlen(msg);
+                }
+            } else {
+                if(app->show_stopscan_tip) {
+                    const char* msg = "No portal selected\nShowing current logs\nPress "
+                                      "BACK to return\n";
+                    furi_string_cat_str(app->text_box_store, msg);
+                    app->text_box_store_strlen += strlen(msg);
+                }
+            }
+        }
+
+        if(0 == strncmp(RESET_CMD, app->selected_tx_string, strlen(RESET_CMD))) {
+            app->sent_reset = true;
+            if(app->show_stopscan_tip) {
+                const char* msg = "Reseting portal\nPress BACK to return\n\n\n\n";
+                furi_string_cat_str(app->text_box_store, msg);
+                app->text_box_store_strlen += strlen(msg);
+            }
+        }
+    }
+
+    text_box_set_text(app->text_box, furi_string_get_cstr(app->text_box_store));
+
+    scene_manager_set_scene_state(app->scene_manager, Evil_PortalSceneConsoleOutput, 0);
+    view_dispatcher_switch_to_view(app->view_dispatcher, Evil_PortalAppViewConsoleOutput);
+
+    // Register callback to receive data
+    evil_portal_uart_set_handle_rx_data_cb(
+        app->uart, evil_portal_console_output_handle_rx_data_cb);
+
+    if(app->is_command && app->selected_tx_string) {
+        if(0 == strncmp(SET_HTML_CMD, app->selected_tx_string, strlen(SET_HTML_CMD))) {
+            if(!portal_file_set) {
+                scene_manager_set_scene_state(
+                    app->scene_manager, Evil_PortalSceneConsoleOutput, 0);
+                view_dispatcher_switch_to_view(
+                    app->view_dispatcher, Evil_PortalAppViewConsoleOutput);
+                return;
+            }
+
+            FuriString* data = furi_string_alloc();
+            furi_string_cat(data, "sethtml=");
+            furi_string_cat(data, (char*)app->index_html);
+
+            evil_portal_uart_tx(
+                (uint8_t*)(furi_string_get_cstr(data)), strlen(furi_string_get_cstr(data)));
+            evil_portal_uart_tx((uint8_t*)("\n"), 1);
+
+            app->sent_html = true;
+
+            free(data);
+            free(app->index_html);
+
+            evil_portal_read_ap_name(context);
+        } else if(0 == strncmp(RESET_CMD, app->selected_tx_string, strlen(RESET_CMD))) {
+            app->sent_html = false;
+            app->sent_ap = false;
+            evil_portal_uart_tx(
+                (uint8_t*)(app->selected_tx_string), strlen(app->selected_tx_string));
+            evil_portal_uart_tx((uint8_t*)("\n"), 1);
+        } else if(1 == strncmp("help", app->selected_tx_string, strlen("help"))) {
+            evil_portal_uart_tx(
+                (uint8_t*)(app->selected_tx_string), strlen(app->selected_tx_string));
+            evil_portal_uart_tx((uint8_t*)("\n"), 1);
+        }
+    }
+}
+
+bool evil_portal_scene_console_output_on_event(void* context, SceneManagerEvent event) {
+    Evil_PortalApp* app = context;
+
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        text_box_set_text(app->text_box, furi_string_get_cstr(app->text_box_store));
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void evil_portal_scene_console_output_on_exit(void* context) {
+    Evil_PortalApp* app = context;
+
+    // Unregister rx callback
+    evil_portal_uart_set_handle_rx_data_cb(app->uart, NULL);
+}
--- a/applications/external/evil_portal/scenes/evil_portal_scene_start.c
+++ b/applications/external/evil_portal/scenes/evil_portal_scene_start.c
@@ -0,0 +1,130 @@
+#include "../evil_portal_app_i.h"
+
+// For each command, define whether additional arguments are needed
+// (enabling text input to fill them out), and whether the console
+// text box should focus at the start of the output or the end
+typedef enum { NO_ARGS = 0, INPUT_ARGS, TOGGLE_ARGS } InputArgs;
+
+typedef enum { FOCUS_CONSOLE_END = 0, FOCUS_CONSOLE_START, FOCUS_CONSOLE_TOGGLE } FocusConsole;
+
+#define SHOW_STOPSCAN_TIP (true)
+#define NO_TIP (false)
+
+#define MAX_OPTIONS (9)
+typedef struct {
+    const char* item_string;
+    const char* options_menu[MAX_OPTIONS];
+    int num_options_menu;
+    const char* actual_commands[MAX_OPTIONS];
+    InputArgs needs_keyboard;
+    FocusConsole focus_console;
+    bool show_stopscan_tip;
+} Evil_PortalItem;
+
+// NUM_MENU_ITEMS defined in evil_portal_app_i.h - if you add an entry here,
+// increment it!
+const Evil_PortalItem items[NUM_MENU_ITEMS] = {
+    // send command
+    {"Start portal", {""}, 1, {SET_HTML_CMD}, NO_ARGS, FOCUS_CONSOLE_END, SHOW_STOPSCAN_TIP},
+
+    // stop portal
+    {"Stop portal", {""}, 1, {RESET_CMD}, NO_ARGS, FOCUS_CONSOLE_START, SHOW_STOPSCAN_TIP},
+
+    // console
+    {"Save logs", {""}, 1, {"savelogs"}, NO_ARGS, FOCUS_CONSOLE_START, SHOW_STOPSCAN_TIP},
+
+    // help
+    {"Help", {""}, 1, {"help"}, NO_ARGS, FOCUS_CONSOLE_START, SHOW_STOPSCAN_TIP},
+};
+
+static void evil_portal_scene_start_var_list_enter_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    Evil_PortalApp* app = context;
+
+    furi_assert(index < NUM_MENU_ITEMS);
+    const Evil_PortalItem* item = &items[index];
+
+    const int selected_option_index = app->selected_option_index[index];
+    furi_assert(selected_option_index < item->num_options_menu);
+    app->selected_tx_string = item->actual_commands[selected_option_index];
+    app->is_command = true;
+    app->is_custom_tx_string = false;
+    app->selected_menu_index = index;
+    app->focus_console_start = (item->focus_console == FOCUS_CONSOLE_TOGGLE) ?
+                                   (selected_option_index == 0) :
+                                   item->focus_console;
+    app->show_stopscan_tip = item->show_stopscan_tip;
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, Evil_PortalEventStartConsole);
+}
+
+static void evil_portal_scene_start_var_list_change_callback(VariableItem* item) {
+    furi_assert(item);
+
+    Evil_PortalApp* app = variable_item_get_context(item);
+    furi_assert(app);
+
+    const Evil_PortalItem* menu_item = &items[app->selected_menu_index];
+    uint8_t item_index = variable_item_get_current_value_index(item);
+    furi_assert(item_index < menu_item->num_options_menu);
+    variable_item_set_current_value_text(item, menu_item->options_menu[item_index]);
+    app->selected_option_index[app->selected_menu_index] = item_index;
+}
+
+void evil_portal_scene_start_on_enter(void* context) {
+    Evil_PortalApp* app = context;
+    VariableItemList* var_item_list = app->var_item_list;
+
+    variable_item_list_set_enter_callback(
+        var_item_list, evil_portal_scene_start_var_list_enter_callback, app);
+
+    VariableItem* item;
+    for(int i = 0; i < NUM_MENU_ITEMS; ++i) {
+        item = variable_item_list_add(
+            var_item_list,
+            items[i].item_string,
+            items[i].num_options_menu,
+            evil_portal_scene_start_var_list_change_callback,
+            app);
+        variable_item_set_current_value_index(item, app->selected_option_index[i]);
+        variable_item_set_current_value_text(
+            item, items[i].options_menu[app->selected_option_index[i]]);
+    }
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, Evil_PortalSceneStart));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, Evil_PortalAppViewVarItemList);
+}
+
+bool evil_portal_scene_start_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    Evil_PortalApp* app = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == Evil_PortalEventStartPortal) {
+            scene_manager_set_scene_state(
+                app->scene_manager, Evil_PortalSceneStart, app->selected_menu_index);
+            scene_manager_next_scene(app->scene_manager, Evil_PortalAppViewStartPortal);
+        } else if(event.event == Evil_PortalEventStartKeyboard) {
+            scene_manager_set_scene_state(
+                app->scene_manager, Evil_PortalSceneStart, app->selected_menu_index);
+        } else if(event.event == Evil_PortalEventStartConsole) {
+            scene_manager_set_scene_state(
+                app->scene_manager, Evil_PortalSceneStart, app->selected_menu_index);
+            scene_manager_next_scene(app->scene_manager, Evil_PortalAppViewConsoleOutput);
+        }
+        consumed = true;
+    } else if(event.type == SceneManagerEventTypeTick) {
+        app->selected_menu_index = variable_item_list_get_selected_item_index(app->var_item_list);
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void evil_portal_scene_start_on_exit(void* context) {
+    Evil_PortalApp* app = context;
+    variable_item_list_reset(app->var_item_list);
+}
--- a/applications/external/hid_app/assets/KB_key_Alt_17x10.png
+++ b/applications/external/hid_app/assets/KB_key_Alt_17x10.png
--- a/applications/external/hid_app/assets/KB_key_Cmd_17x10.png
+++ b/applications/external/hid_app/assets/KB_key_Cmd_17x10.png
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`# This file is generated by cmake for dependency checking of the CMakeCache.txt file`