diff --git a/CODING_STYLE.md b/CODING_STYLE.md
index 6c7d6d792..c62009eff 100644
--- a/CODING_STYLE.md
+++ b/CODING_STYLE.md
@@ -52,7 +52,7 @@ Almost everything in flipper firmware is built around this concept.
 
 ## Naming
 
-### Type names are CamelCase
+### Type names are PascalCase
 
 Examples:
 
diff --git a/applications/plugins/weather_station/helpers/weather_station_types.h b/applications/plugins/weather_station/helpers/weather_station_types.h
index d512251f1..1f5612e2e 100644
--- a/applications/plugins/weather_station/helpers/weather_station_types.h
+++ b/applications/plugins/weather_station/helpers/weather_station_types.h
@@ -3,7 +3,7 @@
 #include <furi.h>
 #include <furi_hal.h>
 
-#define WS_VERSION_APP "0.6.1"
+#define WS_VERSION_APP "0.7"
 #define WS_DEVELOPED "SkorP"
 #define WS_GITHUB "https://github.com/flipperdevices/flipperzero-firmware"
 
diff --git a/applications/plugins/weather_station/protocols/lacrosse_tx.c b/applications/plugins/weather_station/protocols/lacrosse_tx.c
new file mode 100644
index 000000000..8d8a24e24
--- /dev/null
+++ b/applications/plugins/weather_station/protocols/lacrosse_tx.c
@@ -0,0 +1,329 @@
+#include "lacrosse_tx.h"
+
+#define TAG "WSProtocolLaCrosse_TX"
+
+/*
+ * Help
+ * https://github.com/merbanan/rtl_433/blob/master/src/devices/lacrosse.c
+ *  
+ * 
+ * LaCrosse TX 433 Mhz Temperature and Humidity Sensors.
+ * - Tested: TX-7U and TX-6U (Temperature only)
+ * - Not Tested but should work: TX-3, TX-4
+ * - also TFA Dostmann 30.3120.90 sensor (for e.g. 35.1018.06 (WS-9015) station)
+ * - also TFA Dostmann 30.3121 sensor
+ * Protocol Documentation: http://www.f6fbb.org/domo/sensors/tx3_th.php
+ * Message is 44 bits, 11 x 4 bit nybbles:
+ *    [00] [cnt = 10] [type] [addr] [addr + parity] [v1] [v2] [v3] [iv1] [iv2] [check]
+ * Notes:
+ * - Zero Pulses are longer (1,400 uS High, 1,000 uS Low) = 2,400 uS
+ * - One Pulses are shorter (  550 uS High, 1,000 uS Low) = 1,600 uS
+ * - Sensor id changes when the battery is changed
+ * - Primary Value are BCD with one decimal place: vvv = 12.3
+ * - Secondary value is integer only intval = 12, seems to be a repeat of primary
+ *   This may actually be an additional data check because the 4 bit checksum
+ *   and parity bit is  pretty week at detecting errors.
+ * - Temperature is in Celsius with 50.0 added (to handle negative values)
+ * - Humidity values appear to be integer precision, decimal always 0.
+ * - There is a 4 bit checksum and a parity bit covering the three digit value
+ * - Parity check for TX-3 and TX-4 might be different.
+ * - Msg sent with one repeat after 30 mS
+ * - Temperature and humidity are sent as separate messages
+ * - Frequency for each sensor may be could be off by as much as 50-75 khz
+ * - LaCrosse Sensors in other frequency ranges (915 Mhz) use FSK not OOK
+ *   so they can't be decoded by rtl_433 currently.
+ * - Temperature and Humidity are sent in different messages bursts.
+*/
+
+#define LACROSSE_TX_GAP 1000
+#define LACROSSE_TX_BIT_SIZE 44
+#define LACROSSE_TX_SUNC_PATTERN 0x0A000000000
+#define LACROSSE_TX_SUNC_MASK 0x0F000000000
+#define LACROSSE_TX_MSG_TYPE_TEMP 0x00
+#define LACROSSE_TX_MSG_TYPE_HUM 0x0E
+
+static const SubGhzBlockConst ws_protocol_lacrosse_tx_const = {
+    .te_short = 550,
+    .te_long = 1300,
+    .te_delta = 120,
+    .min_count_bit_for_found = 40,
+};
+
+struct WSProtocolDecoderLaCrosse_TX {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    WSBlockGeneric generic;
+
+    uint16_t header_count;
+};
+
+struct WSProtocolEncoderLaCrosse_TX {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    WSBlockGeneric generic;
+};
+
+typedef enum {
+    LaCrosse_TXDecoderStepReset = 0,
+    LaCrosse_TXDecoderStepCheckPreambule,
+    LaCrosse_TXDecoderStepSaveDuration,
+    LaCrosse_TXDecoderStepCheckDuration,
+} LaCrosse_TXDecoderStep;
+
+const SubGhzProtocolDecoder ws_protocol_lacrosse_tx_decoder = {
+    .alloc = ws_protocol_decoder_lacrosse_tx_alloc,
+    .free = ws_protocol_decoder_lacrosse_tx_free,
+
+    .feed = ws_protocol_decoder_lacrosse_tx_feed,
+    .reset = ws_protocol_decoder_lacrosse_tx_reset,
+
+    .get_hash_data = ws_protocol_decoder_lacrosse_tx_get_hash_data,
+    .serialize = ws_protocol_decoder_lacrosse_tx_serialize,
+    .deserialize = ws_protocol_decoder_lacrosse_tx_deserialize,
+    .get_string = ws_protocol_decoder_lacrosse_tx_get_string,
+};
+
+const SubGhzProtocolEncoder ws_protocol_lacrosse_tx_encoder = {
+    .alloc = NULL,
+    .free = NULL,
+
+    .deserialize = NULL,
+    .stop = NULL,
+    .yield = NULL,
+};
+
+const SubGhzProtocol ws_protocol_lacrosse_tx = {
+    .name = WS_PROTOCOL_LACROSSE_TX_NAME,
+    .type = SubGhzProtocolWeatherStation,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_868 |
+            SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
+
+    .decoder = &ws_protocol_lacrosse_tx_decoder,
+    .encoder = &ws_protocol_lacrosse_tx_encoder,
+};
+
+void* ws_protocol_decoder_lacrosse_tx_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    WSProtocolDecoderLaCrosse_TX* instance = malloc(sizeof(WSProtocolDecoderLaCrosse_TX));
+    instance->base.protocol = &ws_protocol_lacrosse_tx;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void ws_protocol_decoder_lacrosse_tx_free(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+    free(instance);
+}
+
+void ws_protocol_decoder_lacrosse_tx_reset(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+    instance->header_count = 0;
+    instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+}
+
+static bool ws_protocol_lacrosse_tx_check_crc(WSProtocolDecoderLaCrosse_TX* instance) {
+    if(!instance->decoder.decode_data) return false;
+    uint8_t msg[] = {
+        (instance->decoder.decode_data >> 36) & 0x0F,
+        (instance->decoder.decode_data >> 32) & 0x0F,
+        (instance->decoder.decode_data >> 28) & 0x0F,
+        (instance->decoder.decode_data >> 24) & 0x0F,
+        (instance->decoder.decode_data >> 20) & 0x0F,
+        (instance->decoder.decode_data >> 16) & 0x0F,
+        (instance->decoder.decode_data >> 12) & 0x0F,
+        (instance->decoder.decode_data >> 8) & 0x0F,
+        (instance->decoder.decode_data >> 4) & 0x0F};
+
+    uint8_t crc = subghz_protocol_blocks_add_bytes(msg, 9);
+    return ((crc & 0x0F) == ((instance->decoder.decode_data) & 0x0F));
+}
+
+/**
+ * Analysis of received data
+ * @param instance Pointer to a WSBlockGeneric* instance
+ */
+static void ws_protocol_lacrosse_tx_remote_controller(WSBlockGeneric* instance) {
+    uint8_t msg_type = (instance->data >> 32) & 0x0F;
+    instance->id = (((instance->data >> 28) & 0x0F) << 3) | (((instance->data >> 24) & 0x0F) >> 1);
+
+    float msg_value = (float)((instance->data >> 20) & 0x0F) * 10.0f +
+                      (float)((instance->data >> 16) & 0x0F) +
+                      (float)((instance->data >> 12) & 0x0F) * 0.1f;
+
+    if(msg_type == LACROSSE_TX_MSG_TYPE_TEMP) { //-V1051
+        instance->temp = msg_value - 50.0f;
+        instance->humidity = WS_NO_HUMIDITY;
+    } else if(msg_type == LACROSSE_TX_MSG_TYPE_HUM) {
+        //ToDo for verification, records are needed with sensors maintaining temperature and temperature for this standard
+        instance->humidity = (uint8_t)msg_value;
+    } else {
+        furi_crash("WS: WSProtocolLaCrosse_TX incorrect msg_type.");
+    }
+
+    instance->btn = WS_NO_BTN;
+    instance->battery_low = WS_NO_BATT;
+    instance->channel = WS_NO_CHANNEL;
+}
+
+void ws_protocol_decoder_lacrosse_tx_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case LaCrosse_TXDecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, LACROSSE_TX_GAP) <
+                        ws_protocol_lacrosse_tx_const.te_delta * 2)) {
+            instance->decoder.parser_step = LaCrosse_TXDecoderStepCheckPreambule;
+            instance->header_count = 0;
+        }
+        break;
+
+    case LaCrosse_TXDecoderStepCheckPreambule:
+
+        if(level) {
+            if((DURATION_DIFF(duration, ws_protocol_lacrosse_tx_const.te_short) <
+                ws_protocol_lacrosse_tx_const.te_delta) &&
+               (instance->header_count > 1)) {
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepCheckDuration;
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+                instance->decoder.te_last = duration;
+            } else if(duration > (ws_protocol_lacrosse_tx_const.te_long * 2)) {
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+            }
+        } else {
+            if(DURATION_DIFF(duration, LACROSSE_TX_GAP) <
+               ws_protocol_lacrosse_tx_const.te_delta * 2) {
+                instance->decoder.te_last = duration;
+                instance->header_count++;
+            } else {
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+            }
+        }
+
+        break;
+
+    case LaCrosse_TXDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = LaCrosse_TXDecoderStepCheckDuration;
+        } else {
+            instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+        }
+        break;
+
+    case LaCrosse_TXDecoderStepCheckDuration:
+
+        if(!level) {
+            if(duration > LACROSSE_TX_GAP * 3) {
+                if(DURATION_DIFF(
+                       instance->decoder.te_last, ws_protocol_lacrosse_tx_const.te_short) <
+                   ws_protocol_lacrosse_tx_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                    instance->decoder.parser_step = LaCrosse_TXDecoderStepSaveDuration;
+                } else if(
+                    DURATION_DIFF(
+                        instance->decoder.te_last, ws_protocol_lacrosse_tx_const.te_long) <
+                    ws_protocol_lacrosse_tx_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                    instance->decoder.parser_step = LaCrosse_TXDecoderStepSaveDuration;
+                }
+                if((instance->decoder.decode_data & LACROSSE_TX_SUNC_MASK) ==
+                   LACROSSE_TX_SUNC_PATTERN) {
+                    if(ws_protocol_lacrosse_tx_check_crc(instance)) {
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit = LACROSSE_TX_BIT_SIZE;
+                        ws_protocol_lacrosse_tx_remote_controller(&instance->generic);
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                }
+
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+                instance->header_count = 0;
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+                break;
+            } else if(
+                (DURATION_DIFF(instance->decoder.te_last, ws_protocol_lacrosse_tx_const.te_short) <
+                 ws_protocol_lacrosse_tx_const.te_delta) &&
+                (DURATION_DIFF(duration, LACROSSE_TX_GAP) <
+                 ws_protocol_lacrosse_tx_const.te_delta * 2)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(instance->decoder.te_last, ws_protocol_lacrosse_tx_const.te_long) <
+                 ws_protocol_lacrosse_tx_const.te_delta) &&
+                (DURATION_DIFF(duration, LACROSSE_TX_GAP) <
+                 ws_protocol_lacrosse_tx_const.te_delta * 2)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+            }
+
+        } else {
+            instance->decoder.parser_step = LaCrosse_TXDecoderStepReset;
+        }
+
+        break;
+    }
+}
+
+uint8_t ws_protocol_decoder_lacrosse_tx_get_hash_data(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool ws_protocol_decoder_lacrosse_tx_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+    return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
+}
+
+bool ws_protocol_decoder_lacrosse_tx_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+    bool ret = false;
+    do {
+        if(!ws_block_generic_deserialize(&instance->generic, flipper_format)) {
+            break;
+        }
+        if(instance->generic.data_count_bit !=
+           ws_protocol_lacrosse_tx_const.min_count_bit_for_found) {
+            FURI_LOG_E(TAG, "Wrong number of bits in key");
+            break;
+        }
+        ret = true;
+    } while(false);
+    return ret;
+}
+
+void ws_protocol_decoder_lacrosse_tx_get_string(void* context, FuriString* output) {
+    furi_assert(context);
+    WSProtocolDecoderLaCrosse_TX* instance = context;
+    furi_string_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:0x%lX%08lX\r\n"
+        "Sn:0x%lX Ch:%d  Bat:%d\r\n"
+        "Temp:%3.1f C Hum:%d%%",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)(instance->generic.data >> 32),
+        (uint32_t)(instance->generic.data),
+        instance->generic.id,
+        instance->generic.channel,
+        instance->generic.battery_low,
+        (double)instance->generic.temp,
+        instance->generic.humidity);
+}
diff --git a/applications/plugins/weather_station/protocols/lacrosse_tx.h b/applications/plugins/weather_station/protocols/lacrosse_tx.h
new file mode 100644
index 000000000..e88455689
--- /dev/null
+++ b/applications/plugins/weather_station/protocols/lacrosse_tx.h
@@ -0,0 +1,79 @@
+#pragma once
+
+#include <lib/subghz/protocols/base.h>
+
+#include <lib/subghz/blocks/const.h>
+#include <lib/subghz/blocks/decoder.h>
+#include <lib/subghz/blocks/encoder.h>
+#include "ws_generic.h"
+#include <lib/subghz/blocks/math.h>
+
+#define WS_PROTOCOL_LACROSSE_TX_NAME "LaCrosse_TX"
+
+typedef struct WSProtocolDecoderLaCrosse_TX WSProtocolDecoderLaCrosse_TX;
+typedef struct WSProtocolEncoderLaCrosse_TX WSProtocolEncoderLaCrosse_TX;
+
+extern const SubGhzProtocolDecoder ws_protocol_lacrosse_tx_decoder;
+extern const SubGhzProtocolEncoder ws_protocol_lacrosse_tx_encoder;
+extern const SubGhzProtocol ws_protocol_lacrosse_tx;
+
+/**
+ * Allocate WSProtocolDecoderLaCrosse_TX.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return WSProtocolDecoderLaCrosse_TX* pointer to a WSProtocolDecoderLaCrosse_TX instance
+ */
+void* ws_protocol_decoder_lacrosse_tx_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free WSProtocolDecoderLaCrosse_TX.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ */
+void ws_protocol_decoder_lacrosse_tx_free(void* context);
+
+/**
+ * Reset decoder WSProtocolDecoderLaCrosse_TX.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ */
+void ws_protocol_decoder_lacrosse_tx_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void ws_protocol_decoder_lacrosse_tx_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ * @return hash Hash sum
+ */
+uint8_t ws_protocol_decoder_lacrosse_tx_get_hash_data(void* context);
+
+/**
+ * Serialize data WSProtocolDecoderLaCrosse_TX.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param preset The modulation on which the signal was received, SubGhzRadioPreset
+ * @return true On success
+ */
+bool ws_protocol_decoder_lacrosse_tx_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+/**
+ * Deserialize data WSProtocolDecoderLaCrosse_TX.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool ws_protocol_decoder_lacrosse_tx_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a WSProtocolDecoderLaCrosse_TX instance
+ * @param output Resulting text
+ */
+void ws_protocol_decoder_lacrosse_tx_get_string(void* context, FuriString* output);
diff --git a/applications/plugins/weather_station/protocols/protocol_items.c b/applications/plugins/weather_station/protocols/protocol_items.c
index 99c8344f4..2c9d751c7 100644
--- a/applications/plugins/weather_station/protocols/protocol_items.c
+++ b/applications/plugins/weather_station/protocols/protocol_items.c
@@ -8,6 +8,7 @@ const SubGhzProtocol* weather_station_protocol_registry_items[] = {
     &ws_protocol_gt_wt_03,
     &ws_protocol_acurite_606tx,
     &ws_protocol_acurite_609txc,
+    &ws_protocol_lacrosse_tx,
     &ws_protocol_lacrosse_tx141thbv2,
     &ws_protocol_oregon2,
     &ws_protocol_acurite_592txr,
diff --git a/applications/plugins/weather_station/protocols/protocol_items.h b/applications/plugins/weather_station/protocols/protocol_items.h
index 9d5d096f8..f9e443abc 100644
--- a/applications/plugins/weather_station/protocols/protocol_items.h
+++ b/applications/plugins/weather_station/protocols/protocol_items.h
@@ -8,6 +8,7 @@
 #include "gt_wt_03.h"
 #include "acurite_606tx.h"
 #include "acurite_609txc.h"
+#include "lacrosse_tx.h"
 #include "lacrosse_tx141thbv2.h"
 #include "oregon2.h"
 #include "acurite_592txr.h"
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diff --git a/assets/dolphin/internal/L1_NoSd_128x49/frame_0.png b/assets/dolphin/internal/L1_NoSd_128x49/frame_0.png
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diff --git a/assets/dolphin/internal/L1_NoSd_128x49/frame_4.png b/assets/dolphin/internal/L1_NoSd_128x49/frame_4.png
index 7a6992a2b..2bb43b306 100644
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diff --git a/assets/dolphin/internal/L1_NoSd_128x49/frame_5.png b/assets/dolphin/internal/L1_NoSd_128x49/frame_5.png
index 00d984300..d7f8c6402 100644
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diff --git a/firmware/targets/f7/api_symbols.csv b/firmware/targets/f7/api_symbols.csv
index 73a4663fb..bcd5825c7 100644
--- a/firmware/targets/f7/api_symbols.csv
+++ b/firmware/targets/f7/api_symbols.csv
@@ -1416,6 +1416,7 @@ Function,+,furi_hal_version_uid_size,size_t,
 Function,-,furi_hal_vibro_init,void,
 Function,+,furi_hal_vibro_on,void,_Bool
 Function,-,furi_init,void,
+Function,+,furi_kernel_is_irq_or_masked,_Bool,
 Function,+,furi_kernel_get_tick_frequency,uint32_t,
 Function,+,furi_kernel_lock,int32_t,
 Function,+,furi_kernel_restore_lock,int32_t,int32_t
diff --git a/furi/core/common_defines.h b/furi/core/common_defines.h
index c7acf95b4..1ec847d45 100644
--- a/furi/core/common_defines.h
+++ b/furi/core/common_defines.h
@@ -52,30 +52,6 @@ extern "C" {
     }
 #endif
 
-static inline bool furi_is_irq_context() {
-    bool irq = false;
-    BaseType_t state;
-
-    if(FURI_IS_IRQ_MODE()) {
-        /* Called from interrupt context */
-        irq = true;
-    } else {
-        /* Get FreeRTOS scheduler state */
-        state = xTaskGetSchedulerState();
-
-        if(state != taskSCHEDULER_NOT_STARTED) {
-            /* Scheduler was started */
-            if(FURI_IS_IRQ_MASKED()) {
-                /* Interrupts are masked */
-                irq = true;
-            }
-        }
-    }
-
-    /* Return context, 0: thread context, 1: IRQ context */
-    return (irq);
-}
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/furi/core/kernel.c b/furi/core/kernel.c
index 73d2012b4..7928ad11c 100644
--- a/furi/core/kernel.c
+++ b/furi/core/kernel.c
@@ -7,8 +7,32 @@
 
 #include CMSIS_device_header
 
+bool furi_kernel_is_irq_or_masked() {
+    bool irq = false;
+    BaseType_t state;
+
+    if(FURI_IS_IRQ_MODE()) {
+        /* Called from interrupt context */
+        irq = true;
+    } else {
+        /* Get FreeRTOS scheduler state */
+        state = xTaskGetSchedulerState();
+
+        if(state != taskSCHEDULER_NOT_STARTED) {
+            /* Scheduler was started */
+            if(FURI_IS_IRQ_MASKED()) {
+                /* Interrupts are masked */
+                irq = true;
+            }
+        }
+    }
+
+    /* Return context, 0: thread context, 1: IRQ context */
+    return (irq);
+}
+
 int32_t furi_kernel_lock() {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
 
     int32_t lock;
 
@@ -33,7 +57,7 @@ int32_t furi_kernel_lock() {
 }
 
 int32_t furi_kernel_unlock() {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
 
     int32_t lock;
 
@@ -63,7 +87,7 @@ int32_t furi_kernel_unlock() {
 }
 
 int32_t furi_kernel_restore_lock(int32_t lock) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
 
     switch(xTaskGetSchedulerState()) {
     case taskSCHEDULER_SUSPENDED:
@@ -99,7 +123,7 @@ uint32_t furi_kernel_get_tick_frequency() {
 }
 
 void furi_delay_tick(uint32_t ticks) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     if(ticks == 0U) {
         taskYIELD();
     } else {
@@ -108,7 +132,7 @@ void furi_delay_tick(uint32_t ticks) {
 }
 
 FuriStatus furi_delay_until_tick(uint32_t tick) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
 
     TickType_t tcnt, delay;
     FuriStatus stat;
@@ -137,7 +161,7 @@ FuriStatus furi_delay_until_tick(uint32_t tick) {
 uint32_t furi_get_tick() {
     TickType_t ticks;
 
-    if(furi_is_irq_context() != 0U) {
+    if(furi_kernel_is_irq_or_masked() != 0U) {
         ticks = xTaskGetTickCountFromISR();
     } else {
         ticks = xTaskGetTickCount();
diff --git a/furi/core/kernel.h b/furi/core/kernel.h
index f30f109bb..371f76c1f 100644
--- a/furi/core/kernel.h
+++ b/furi/core/kernel.h
@@ -10,19 +10,42 @@
 extern "C" {
 #endif
 
+/** Check if CPU is in IRQ or kernel running and IRQ is masked
+ * 
+ * Originally this primitive was born as a workaround for FreeRTOS kernel primitives shenanigans with PRIMASK.
+ * 
+ * Meaningful use cases are:
+ * 
+ * - When kernel is started and you want to ensure that you are not in IRQ or IRQ is not masked(like in critical section)
+ * - When kernel is not started and you want to make sure that you are not in IRQ mode, ignoring PRIMASK.
+ * 
+ * As you can see there will be edge case when kernel is not started and PRIMASK is not 0 that may cause some funky behavior.
+ * Most likely it will happen after kernel primitives being used, but control not yet passed to kernel.
+ * It's up to you to figure out if it is safe for your code or not.
+ * 
+ * @return     true if CPU is in IRQ or kernel running and IRQ is masked
+ */
+bool furi_kernel_is_irq_or_masked();
+
 /** Lock kernel, pause process scheduling
+ *
+ * @warning This should never be called in interrupt request context.
  *
  * @return     previous lock state(0 - unlocked, 1 - locked)
  */
 int32_t furi_kernel_lock();
 
 /** Unlock kernel, resume process scheduling
+ *
+ * @warning This should never be called in interrupt request context.
  *
  * @return     previous lock state(0 - unlocked, 1 - locked)
  */
 int32_t furi_kernel_unlock();
 
 /** Restore kernel lock state
+ *
+ * @warning This should never be called in interrupt request context.
  *
  * @param[in]  lock  The lock state
  *
@@ -37,7 +60,9 @@ int32_t furi_kernel_restore_lock(int32_t lock);
 uint32_t furi_kernel_get_tick_frequency();
 
 /** Delay execution
- * 
+ *
+ * @warning This should never be called in interrupt request context.
+ *
  * Also keep in mind delay is aliased to scheduler timer intervals.
  *
  * @param[in]  ticks  The ticks count to pause
@@ -45,6 +70,8 @@ uint32_t furi_kernel_get_tick_frequency();
 void furi_delay_tick(uint32_t ticks);
 
 /** Delay until tick
+ *
+ * @warning This should never be called in interrupt request context.
  *
  * @param[in]  ticks  The tick until which kerel should delay task execution
  *
diff --git a/furi/core/message_queue.c b/furi/core/message_queue.c
index 9a41f8775..ddf56f006 100644
--- a/furi/core/message_queue.c
+++ b/furi/core/message_queue.c
@@ -1,11 +1,11 @@
+#include "kernel.h"
 #include "message_queue.h"
-#include "core/common_defines.h"
 #include <FreeRTOS.h>
 #include <queue.h>
 #include "check.h"
 
 FuriMessageQueue* furi_message_queue_alloc(uint32_t msg_count, uint32_t msg_size) {
-    furi_assert((furi_is_irq_context() == 0U) && (msg_count > 0U) && (msg_size > 0U));
+    furi_assert((furi_kernel_is_irq_or_masked() == 0U) && (msg_count > 0U) && (msg_size > 0U));
 
     QueueHandle_t handle = xQueueCreate(msg_count, msg_size);
     furi_check(handle);
@@ -14,7 +14,7 @@ FuriMessageQueue* furi_message_queue_alloc(uint32_t msg_count, uint32_t msg_size
 }
 
 void furi_message_queue_free(FuriMessageQueue* instance) {
-    furi_assert(furi_is_irq_context() == 0U);
+    furi_assert(furi_kernel_is_irq_or_masked() == 0U);
     furi_assert(instance);
 
     vQueueDelete((QueueHandle_t)instance);
@@ -28,7 +28,7 @@ FuriStatus
 
     stat = FuriStatusOk;
 
-    if(furi_is_irq_context() != 0U) {
+    if(furi_kernel_is_irq_or_masked() != 0U) {
         if((hQueue == NULL) || (msg_ptr == NULL) || (timeout != 0U)) {
             stat = FuriStatusErrorParameter;
         } else {
@@ -65,7 +65,7 @@ FuriStatus furi_message_queue_get(FuriMessageQueue* instance, void* msg_ptr, uin
 
     stat = FuriStatusOk;
 
-    if(furi_is_irq_context() != 0U) {
+    if(furi_kernel_is_irq_or_masked() != 0U) {
         if((hQueue == NULL) || (msg_ptr == NULL) || (timeout != 0U)) {
             stat = FuriStatusErrorParameter;
         } else {
@@ -131,7 +131,7 @@ uint32_t furi_message_queue_get_count(FuriMessageQueue* instance) {
 
     if(hQueue == NULL) {
         count = 0U;
-    } else if(furi_is_irq_context() != 0U) {
+    } else if(furi_kernel_is_irq_or_masked() != 0U) {
         count = uxQueueMessagesWaitingFromISR(hQueue);
     } else {
         count = uxQueueMessagesWaiting(hQueue);
@@ -148,7 +148,7 @@ uint32_t furi_message_queue_get_space(FuriMessageQueue* instance) {
 
     if(mq == NULL) {
         space = 0U;
-    } else if(furi_is_irq_context() != 0U) {
+    } else if(furi_kernel_is_irq_or_masked() != 0U) {
         isrm = taskENTER_CRITICAL_FROM_ISR();
 
         /* space = pxQueue->uxLength - pxQueue->uxMessagesWaiting; */
@@ -167,7 +167,7 @@ FuriStatus furi_message_queue_reset(FuriMessageQueue* instance) {
     QueueHandle_t hQueue = (QueueHandle_t)instance;
     FuriStatus stat;
 
-    if(furi_is_irq_context() != 0U) {
+    if(furi_kernel_is_irq_or_masked() != 0U) {
         stat = FuriStatusErrorISR;
     } else if(hQueue == NULL) {
         stat = FuriStatusErrorParameter;
diff --git a/furi/core/timer.c b/furi/core/timer.c
index be7efebe2..4b6ccecba 100644
--- a/furi/core/timer.c
+++ b/furi/core/timer.c
@@ -3,7 +3,6 @@
 #include "memmgr.h"
 #include "kernel.h"
 
-#include "core/common_defines.h"
 #include <FreeRTOS.h>
 #include <timers.h>
 
@@ -27,7 +26,7 @@ static void TimerCallback(TimerHandle_t hTimer) {
 }
 
 FuriTimer* furi_timer_alloc(FuriTimerCallback func, FuriTimerType type, void* context) {
-    furi_assert((furi_is_irq_context() == 0U) && (func != NULL));
+    furi_assert((furi_kernel_is_irq_or_masked() == 0U) && (func != NULL));
 
     TimerHandle_t hTimer;
     TimerCallback_t* callb;
@@ -60,7 +59,7 @@ FuriTimer* furi_timer_alloc(FuriTimerCallback func, FuriTimerType type, void* co
 }
 
 void furi_timer_free(FuriTimer* instance) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     furi_assert(instance);
 
     TimerHandle_t hTimer = (TimerHandle_t)instance;
@@ -82,7 +81,7 @@ void furi_timer_free(FuriTimer* instance) {
 }
 
 FuriStatus furi_timer_start(FuriTimer* instance, uint32_t ticks) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     furi_assert(instance);
 
     TimerHandle_t hTimer = (TimerHandle_t)instance;
@@ -99,7 +98,7 @@ FuriStatus furi_timer_start(FuriTimer* instance, uint32_t ticks) {
 }
 
 FuriStatus furi_timer_stop(FuriTimer* instance) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     furi_assert(instance);
 
     TimerHandle_t hTimer = (TimerHandle_t)instance;
@@ -117,7 +116,7 @@ FuriStatus furi_timer_stop(FuriTimer* instance) {
 }
 
 uint32_t furi_timer_is_running(FuriTimer* instance) {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     furi_assert(instance);
 
     TimerHandle_t hTimer = (TimerHandle_t)instance;
diff --git a/furi/furi.c b/furi/furi.c
index a616bce63..cc0e3f4f1 100644
--- a/furi/furi.c
+++ b/furi/furi.c
@@ -3,7 +3,7 @@
 #include "queue.h"
 
 void furi_init() {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     furi_assert(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED);
 
     furi_log_init();
@@ -11,7 +11,7 @@ void furi_init() {
 }
 
 void furi_run() {
-    furi_assert(!furi_is_irq_context());
+    furi_assert(!furi_kernel_is_irq_or_masked());
     furi_assert(xTaskGetSchedulerState() == taskSCHEDULER_NOT_STARTED);
 
 #if(__ARM_ARCH_7A__ == 0U)