GPS update

ReadMe.md

@@ -23,6 +23,7 @@
 - - With speed optimizations by RogueMaster. 
 - - Rename the [minimal animation file](https://github.com/RogueMaster/flipperzero-firmware-wPlugins/blob/420/assets/resources/dolphin/manifest.txt.exampleMin) to see it, or [RM select](https://github.com/RogueMaster/flipperzero-firmware-wPlugins/blob/420/assets/resources/dolphin/manifest.txt.exampleRM) if you have copied over [the RM select](https://github.com/RogueMaster/awesome-flipperzero-withModules/tree/rogue_main/dolphin-RMselect) animations.
 - Updated: [i2c Tools (By NaejEL)](https://github.com/NaejEL/flipperzero-i2ctools)
+- Updated: [GPS (By ezod)](https://github.com/ezod/flipperzero-gps) `Req: NMEA 0183`
 
 <details>
   <summary><B>TO DO / REMOVED</b></summary><br/>

applications/plugins/gps_nmea_uart/README.md

@@ -1,15 +1,42 @@
 # GPS for Flipper Zero
 
-[Original link](https://github.com/ezod/flipperzero-gps)
+A simple Flipper Zero application for NMEA 0183 serial GPS modules, such as the
+[Adafruit Ultimate GPS Breakout].
 
-A simple Flipper Zero application for NMEA 0183 serial GPS modules, such as the [Adafruit Ultimate GPS Breakout].
+![ui](ui.png)
 
-Heavy lifting (NMEA parsing) provided by [minmea], which is included in this repository.
+Heavy lifting (NMEA parsing) provided by [minmea], which is included in this
+repository.
 
 ## Hardware Setup
 
-Connect the GPS module to power and the USART using GPIO pins 9 (3.3V), 11 (GND), 13 (TX), and 14 (RX), as appropriate.
+Connect the GPS module to power and the USART using GPIO pins 9 (3.3V), 11
+(GND), 13 (TX), and 14 (RX), as appropriate.
+
+![wiring](wiring.png)
+
+## Building the FAP
+
+1. Clone the [flipperzero-firmware] repository.
+2. Create a symbolic link in `applications_user` named `gps`, pointing to this
+   repository.
+3. Compile with `./fbt fap_gps`.
+4. Copy `build/f7-firmware-D/.extapps/gps.fap` to `apps/Tools` on the SD card
+   (directly or using [qFlipper]).
+
+## Contributing
+
+This project was a learning exercise and is more or less "complete" from my
+perspective, but I will happily accept pull requests that improve and enhance
+the functionality for others.
+
+Currently, the app only parses RMC and GGA sentences, and displays a subset of
+the data that fits on the screen. The UART is also hard-coded to 9600 baud.
+These limitations are largely driven by the GPS module I have to work with. A
+more elaborate UI with scrolling or multiple screens, as well as a configurable
+baud rate, may be useful for other GPS modules.
 
 [Adafruit Ultimate GPS Breakout]: https://www.adafruit.com/product/746
 [minmea]: https://github.com/kosma/minmea
 [flipperzero-firmware]: https://github.com/flipperdevices/flipperzero-firmware
+[qFlipper]: https://flipperzero.one/update

applications/plugins/gps_nmea_uart/gps.c

@@ -4,118 +4,134 @@
 #include <gui/gui.h>
 #include <string.h>
 
-typedef enum {
-    EventTypeTick,
-    EventTypeKey,
+typedef enum
+{
+  EventTypeTick,
+  EventTypeKey,
 } EventType;
 
-typedef struct {
-    EventType type;
-    InputEvent input;
+typedef struct
+{
+  EventType type;
+  InputEvent input;
 } PluginEvent;
 
-static void render_callback(Canvas* const canvas, void* context) {
-    const GpsUart* gps_uart = acquire_mutex((ValueMutex*)context, 25);
-    if(gps_uart == NULL) {
-        return;
-    }
+static void render_callback(Canvas* const canvas, void* context)
+{
+  const GpsUart* gps_uart = acquire_mutex((ValueMutex*)context, 25);
+  if (gps_uart == NULL)
+  {
+    return;
+  }
 
-    canvas_set_font(canvas, FontSecondary);
-    char buffer[64];
-    snprintf(buffer, 64, "LAT: %f", (double)gps_uart->status.latitude);
-    canvas_draw_str_aligned(canvas, 10, 10, AlignLeft, AlignBottom, buffer);
-    snprintf(buffer, 64, "LON: %f", (double)gps_uart->status.longitude);
-    canvas_draw_str_aligned(canvas, 10, 20, AlignLeft, AlignBottom, buffer);
-    snprintf(
-        buffer,
-        64,
-        "C/S: %.1f / %.2fkn",
-        (double)gps_uart->status.course,
-        (double)gps_uart->status.speed);
-    canvas_draw_str_aligned(canvas, 10, 30, AlignLeft, AlignBottom, buffer);
-    snprintf(
-        buffer,
-        64,
-        "ALT: %.1f %c",
-        (double)gps_uart->status.altitude,
-        gps_uart->status.altitude_units);
-    canvas_draw_str_aligned(canvas, 10, 40, AlignLeft, AlignBottom, buffer);
-    snprintf(buffer, 64, "FIX: %d", gps_uart->status.fix_quality);
-    canvas_draw_str_aligned(canvas, 10, 50, AlignLeft, AlignBottom, buffer);
-    snprintf(buffer, 64, "SAT: %d", gps_uart->status.satellites_tracked);
-    canvas_draw_str_aligned(canvas, 10, 60, AlignLeft, AlignBottom, buffer);
+  canvas_set_font(canvas, FontPrimary);
+  canvas_draw_str_aligned(canvas, 32, 8, AlignCenter, AlignBottom, "Latitude");
+  canvas_draw_str_aligned(canvas, 96, 8, AlignCenter, AlignBottom, "Longitude");
+  canvas_draw_str_aligned(canvas, 21, 30, AlignCenter, AlignBottom, "Course");
+  canvas_draw_str_aligned(canvas, 64, 30, AlignCenter, AlignBottom, "Speed");
+  canvas_draw_str_aligned(canvas, 107, 30, AlignCenter, AlignBottom, "Altitude");
+  canvas_draw_str_aligned(canvas, 32, 52, AlignCenter, AlignBottom, "Satellites");
+  canvas_draw_str_aligned(canvas, 96, 52, AlignCenter, AlignBottom, "Last Fix");
 
-    release_mutex((ValueMutex*)context, gps_uart);
+  canvas_set_font(canvas, FontSecondary);
+  char buffer[64];
+  snprintf(buffer, 64, "%f", (double)gps_uart->status.latitude);
+  canvas_draw_str_aligned(canvas, 32, 18, AlignCenter, AlignBottom, buffer);
+  snprintf(buffer, 64, "%f", (double)gps_uart->status.longitude);
+  canvas_draw_str_aligned(canvas, 96, 18, AlignCenter, AlignBottom, buffer);
+  snprintf(buffer, 64, "%.1f", (double)gps_uart->status.course);
+  canvas_draw_str_aligned(canvas, 21, 40, AlignCenter, AlignBottom, buffer);
+  snprintf(buffer, 64, "%.2f kn", (double)gps_uart->status.speed);
+  canvas_draw_str_aligned(canvas, 64, 40, AlignCenter, AlignBottom, buffer);
+  snprintf(buffer, 64, "%.1f %c", (double)gps_uart->status.altitude, tolower(gps_uart->status.altitude_units));
+  canvas_draw_str_aligned(canvas, 107, 40, AlignCenter, AlignBottom, buffer);
+  snprintf(buffer, 64, "%d", gps_uart->status.satellites_tracked);
+  canvas_draw_str_aligned(canvas, 32, 62, AlignCenter, AlignBottom, buffer);
+  snprintf(buffer, 64, "%02d:%02d:%02d UTC", gps_uart->status.time_hours, gps_uart->status.time_minutes,
+           gps_uart->status.time_seconds);
+  canvas_draw_str_aligned(canvas, 96, 62, AlignCenter, AlignBottom, buffer);
+
+  release_mutex((ValueMutex*)context, gps_uart);
 }
 
-static void input_callback(InputEvent* input_event, FuriMessageQueue* event_queue) {
-    furi_assert(event_queue);
+static void input_callback(InputEvent* input_event, FuriMessageQueue* event_queue)
+{
+  furi_assert(event_queue);
 
-    PluginEvent event = {.type = EventTypeKey, .input = *input_event};
-    furi_message_queue_put(event_queue, &event, FuriWaitForever);
+  PluginEvent event = {.type = EventTypeKey, .input = *input_event};
+  furi_message_queue_put(event_queue, &event, FuriWaitForever);
 }
 
-int32_t gps_app(void* p) {
-    UNUSED(p);
+int32_t gps_app(void* p)
+{
+  UNUSED(p);
 
-    FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(PluginEvent));
+  FuriMessageQueue* event_queue = furi_message_queue_alloc(8, sizeof(PluginEvent));
 
-    GpsUart* gps_uart = gps_uart_enable();
+  GpsUart* gps_uart = gps_uart_enable();
 
-    ValueMutex gps_uart_mutex;
-    if(!init_mutex(&gps_uart_mutex, gps_uart, sizeof(GpsUart))) {
-        FURI_LOG_E("GPS", "cannot create mutex\r\n");
-        free(gps_uart);
-        return 255;
-    }
+  ValueMutex gps_uart_mutex;
+  if (!init_mutex(&gps_uart_mutex, gps_uart, sizeof(GpsUart)))
+  {
+    FURI_LOG_E("GPS", "cannot create mutex\r\n");
+    free(gps_uart);
+    return 255;
+  }
 
-    // set system callbacks
-    ViewPort* view_port = view_port_alloc();
-    view_port_draw_callback_set(view_port, render_callback, &gps_uart_mutex);
-    view_port_input_callback_set(view_port, input_callback, event_queue);
+  // set system callbacks
+  ViewPort* view_port = view_port_alloc();
+  view_port_draw_callback_set(view_port, render_callback, &gps_uart_mutex);
+  view_port_input_callback_set(view_port, input_callback, event_queue);
 
-    // open GUI and register view_port
-    Gui* gui = furi_record_open("gui");
-    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
+  // open GUI and register view_port
+  Gui* gui = furi_record_open("gui");
+  gui_add_view_port(gui, view_port, GuiLayerFullscreen);
 
-    PluginEvent event;
-    for(bool processing = true; processing;) {
-        FuriStatus event_status = furi_message_queue_get(event_queue, &event, 100);
+  PluginEvent event;
+  for (bool processing = true; processing;)
+  {
+    FuriStatus event_status = furi_message_queue_get(event_queue, &event, 100);
 
-        GpsUart* gps_uart = (GpsUart*)acquire_mutex_block(&gps_uart_mutex);
+    GpsUart* gps_uart = (GpsUart*)acquire_mutex_block(&gps_uart_mutex);
 
-        if(event_status == FuriStatusOk) {
-            // press events
-            if(event.type == EventTypeKey) {
-                if(event.input.type == InputTypePress) {
-                    switch(event.input.key) {
-                    case InputKeyUp:
-                    case InputKeyDown:
-                    case InputKeyRight:
-                    case InputKeyLeft:
-                    case InputKeyOk:
-                        break;
-                    case InputKeyBack:
-                        processing = false;
-                        break;
-                    }
-                }
-            }
-        } else {
-            FURI_LOG_D("GPS", "FuriMessageQueue: event timeout");
+    if (event_status == FuriStatusOk)
+    {
+      // press events
+      if (event.type == EventTypeKey)
+      {
+        if (event.input.type == InputTypePress)
+        {
+          switch (event.input.key)
+          {
+            case InputKeyUp:
+            case InputKeyDown:
+            case InputKeyRight:
+            case InputKeyLeft:
+            case InputKeyOk:
+              break;
+            case InputKeyBack:
+              processing = false;
+              break;
+          }
         }
-
-        view_port_update(view_port);
-        release_mutex(&gps_uart_mutex, gps_uart);
+      }
+    } 
+    else
+    {
+      FURI_LOG_D("GPS", "FuriMessageQueue: event timeout");
     }
 
-    view_port_enabled_set(view_port, false);
-    gui_remove_view_port(gui, view_port);
-    furi_record_close("gui");
-    view_port_free(view_port);
-    furi_message_queue_free(event_queue);
-    delete_mutex(&gps_uart_mutex);
-    gps_uart_disable(gps_uart);
+    view_port_update(view_port);
+    release_mutex(&gps_uart_mutex, gps_uart);
+  }
 
-    return 0;
+  view_port_enabled_set(view_port, false);
+  gui_remove_view_port(gui, view_port);
+  furi_record_close("gui");
+  view_port_free(view_port);
+  furi_message_queue_free(event_queue);
+  delete_mutex(&gps_uart_mutex);
+  gps_uart_disable(gps_uart);
+
+  return 0;
 }

applications/plugins/gps_nmea_uart/gps_uart.c

@@ -3,153 +3,194 @@
 #include "minmea.h"
 #include "gps_uart.h"
 
-typedef enum {
-    WorkerEvtStop = (1 << 0),
-    WorkerEvtRxDone = (1 << 1),
+typedef enum
+{
+  WorkerEvtStop = (1 << 0),
+  WorkerEvtRxDone = (1 << 1),
 } WorkerEvtFlags;
 
 #define WORKER_ALL_RX_EVENTS (WorkerEvtStop | WorkerEvtRxDone)
 
-static void gps_uart_on_irq_cb(UartIrqEvent ev, uint8_t data, void* context) {
-    GpsUart* gps_uart = (GpsUart*)context;
+static void gps_uart_on_irq_cb(UartIrqEvent ev, uint8_t data, void* context)
+{
+  GpsUart* gps_uart = (GpsUart*)context;
 
-    if(ev == UartIrqEventRXNE) {
-        furi_stream_buffer_send(gps_uart->rx_stream, &data, 1, 0);
-        furi_thread_flags_set(furi_thread_get_id(gps_uart->thread), WorkerEvtRxDone);
-    }
+  if (ev == UartIrqEventRXNE)
+  {
+    furi_stream_buffer_send(gps_uart->rx_stream, &data, 1, 0);
+    furi_thread_flags_set(furi_thread_get_id(gps_uart->thread), WorkerEvtRxDone);
+  }
 }
 
-static void gps_uart_serial_init(GpsUart* gps_uart) {
-    furi_hal_console_disable();
-    furi_hal_uart_set_irq_cb(FuriHalUartIdUSART1, gps_uart_on_irq_cb, gps_uart);
-    furi_hal_uart_set_br(FuriHalUartIdUSART1, GPS_BAUDRATE);
+static void gps_uart_serial_init(GpsUart* gps_uart)
+{
+  furi_hal_console_disable();
+  furi_hal_uart_set_irq_cb(FuriHalUartIdUSART1, gps_uart_on_irq_cb, gps_uart);
+  furi_hal_uart_set_br(FuriHalUartIdUSART1, GPS_BAUDRATE);
 }
 
-static void gps_uart_serial_deinit(GpsUart* gps_uart) {
-    UNUSED(gps_uart);
-    furi_hal_uart_set_irq_cb(FuriHalUartIdUSART1, NULL, NULL);
-    furi_hal_console_enable();
+static void gps_uart_serial_deinit(GpsUart* gps_uart)
+{
+  UNUSED(gps_uart);
+  furi_hal_uart_set_irq_cb(FuriHalUartIdUSART1, NULL, NULL);
+  furi_hal_console_enable();
 }
 
-static void gps_uart_parse_nmea(GpsUart* gps_uart, char* line) {
-    switch(minmea_sentence_id(line, false)) {
-    case MINMEA_SENTENCE_RMC: {
-        struct minmea_sentence_rmc frame;
-        if(minmea_parse_rmc(&frame, line)) {
-            gps_uart->status.valid = frame.valid;
-            gps_uart->status.latitude = minmea_tocoord(&frame.latitude);
-            gps_uart->status.longitude = minmea_tocoord(&frame.longitude);
-            gps_uart->status.speed = minmea_tofloat(&frame.speed);
-            gps_uart->status.course = minmea_tofloat(&frame.course);
-        }
+static void gps_uart_parse_nmea(GpsUart* gps_uart, char* line)
+{
+  switch (minmea_sentence_id(line, false))
+  {
+    case MINMEA_SENTENCE_RMC:
+    {
+      struct minmea_sentence_rmc frame;
+      if (minmea_parse_rmc(&frame, line))
+      {
+        gps_uart->status.valid = frame.valid;
+        gps_uart->status.latitude = minmea_tocoord(&frame.latitude);
+        gps_uart->status.longitude = minmea_tocoord(&frame.longitude);
+        gps_uart->status.speed = minmea_tofloat(&frame.speed);
+        gps_uart->status.course = minmea_tofloat(&frame.course);
+        gps_uart->status.time_hours = frame.time.hours;
+        gps_uart->status.time_minutes = frame.time.minutes;
+        gps_uart->status.time_seconds = frame.time.seconds;
+
+        notification_message_block(gps_uart->notifications, &sequence_blink_green_10);
+      }
     } break;
 
-    case MINMEA_SENTENCE_GGA: {
-        struct minmea_sentence_gga frame;
-        if(minmea_parse_gga(&frame, line)) {
-            gps_uart->status.latitude = minmea_tocoord(&frame.latitude);
-            gps_uart->status.longitude = minmea_tocoord(&frame.longitude);
-            gps_uart->status.altitude = minmea_tofloat(&frame.altitude);
-            gps_uart->status.altitude_units = frame.altitude_units;
-            gps_uart->status.fix_quality = frame.fix_quality;
-            gps_uart->status.satellites_tracked = frame.satellites_tracked;
-        }
+    case MINMEA_SENTENCE_GGA:
+    {
+      struct minmea_sentence_gga frame;
+      if (minmea_parse_gga(&frame, line))
+      {
+        gps_uart->status.latitude = minmea_tocoord(&frame.latitude);
+        gps_uart->status.longitude = minmea_tocoord(&frame.longitude);
+        gps_uart->status.altitude = minmea_tofloat(&frame.altitude);
+        gps_uart->status.altitude_units = frame.altitude_units;
+        gps_uart->status.fix_quality = frame.fix_quality;
+        gps_uart->status.satellites_tracked = frame.satellites_tracked;
+        gps_uart->status.time_hours = frame.time.hours;
+        gps_uart->status.time_minutes = frame.time.minutes;
+        gps_uart->status.time_seconds = frame.time.seconds;
+
+        notification_message_block(gps_uart->notifications, &sequence_blink_magenta_10);
+      }
     } break;
 
     default:
-        break;
-    }
+      break;
+  }
 }
 
-static int32_t gps_uart_worker(void* context) {
-    GpsUart* gps_uart = (GpsUart*)context;
+static int32_t gps_uart_worker(void* context)
+{
+  GpsUart* gps_uart = (GpsUart*)context;
 
-    gps_uart->rx_stream = furi_stream_buffer_alloc(RX_BUF_SIZE * 5, 1);
-    size_t rx_offset = 0;
+  gps_uart->rx_stream = furi_stream_buffer_alloc(RX_BUF_SIZE * 5, 1);
+  size_t rx_offset = 0;
 
-    gps_uart_serial_init(gps_uart);
+  gps_uart_serial_init(gps_uart);
 
-    while(1) {
-        uint32_t events =
-            furi_thread_flags_wait(WORKER_ALL_RX_EVENTS, FuriFlagWaitAny, FuriWaitForever);
-        furi_check((events & FuriFlagError) == 0);
+  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 & WorkerEvtStop)
+    {
+      break;
+    }
     
-        if(events & WorkerEvtRxDone) {
-            size_t len = 0;
-            do {
-                len = furi_stream_buffer_receive(
-                    gps_uart->rx_stream,
-                    gps_uart->rx_buf + rx_offset,
-                    RX_BUF_SIZE - 1 - rx_offset,
-                    0);
-                if(len > 0) {
-                    rx_offset += len;
-                    gps_uart->rx_buf[rx_offset] = '\0';
+    if (events & WorkerEvtRxDone)
+    {
+      size_t len = 0;
+      do 
+      {
+        len = furi_stream_buffer_receive(gps_uart->rx_stream, gps_uart->rx_buf + rx_offset, RX_BUF_SIZE - 1 - rx_offset,
+                                         0);
+        if (len > 0)
+        {
+          rx_offset += len;
+          gps_uart->rx_buf[rx_offset] = '\0';
 
-                    char* line_current = (char*)gps_uart->rx_buf;
-                    while(1) {
-                        while(*line_current == '\0' &&
-                              line_current < (char*)gps_uart->rx_buf + rx_offset - 1) {
-                            line_current++;
-                        }
+          char * line_current = (char *)gps_uart->rx_buf;
+          while (1)
+          {
+            while (*line_current == '\0' && line_current < (char *)gps_uart->rx_buf + rx_offset - 1)
+            {
+              line_current++;
+            }
 
-                        char* newline = strchr(line_current, '\n');
-                        if(newline) {
-                            *newline = '\0';
-                            gps_uart_parse_nmea(gps_uart, line_current);
-                            line_current = newline + 1;
-                        } else {
-                            if(line_current > (char*)gps_uart->rx_buf) {
-                                rx_offset = 0;
-                                while(*line_current) {
-                                    gps_uart->rx_buf[rx_offset++] = *(line_current++);
-                                }
-                            }
-                            break;
-                        }
-                    }
+            char * newline = strchr(line_current, '\n');
+            if (newline)
+            {
+              *newline = '\0';
+              gps_uart_parse_nmea(gps_uart, line_current);
+              line_current = newline + 1;
+            }
+            else
+            {
+              if (line_current > (char *)gps_uart->rx_buf)
+              {
+                rx_offset = 0;
+                while (*line_current)
+                {
+                  gps_uart->rx_buf[rx_offset++] = *(line_current++);
                 }
-            } while(len > 0);
+              }
+              break;
+            }
+          }
         }
+      }
+      while (len > 0);
     }
+  }
 
-    gps_uart_serial_deinit(gps_uart);
-    furi_stream_buffer_free(gps_uart->rx_stream);
+  gps_uart_serial_deinit(gps_uart);
+  furi_stream_buffer_free(gps_uart->rx_stream);
 
-    return 0;
+  return 0;
 }
 
-GpsUart* gps_uart_enable() {
-    GpsUart* gps_uart = malloc(sizeof(GpsUart));
+GpsUart* gps_uart_enable()
+{
+  GpsUart* gps_uart = malloc(sizeof(GpsUart));
 
-    gps_uart->status.valid = false;
-    gps_uart->status.latitude = 0.0;
-    gps_uart->status.longitude = 0.0;
-    gps_uart->status.speed = 0.0;
-    gps_uart->status.course = 0.0;
-    gps_uart->status.altitude = 0.0;
-    gps_uart->status.altitude_units = ' ';
-    gps_uart->status.fix_quality = 0;
-    gps_uart->status.satellites_tracked = 0;
+  gps_uart->status.valid = false;
+  gps_uart->status.latitude = 0.0;
+  gps_uart->status.longitude = 0.0;
+  gps_uart->status.speed = 0.0;
+  gps_uart->status.course = 0.0;
+  gps_uart->status.altitude = 0.0;
+  gps_uart->status.altitude_units = ' ';
+  gps_uart->status.fix_quality = 0;
+  gps_uart->status.satellites_tracked = 0;
+  gps_uart->status.time_hours = 0;
+  gps_uart->status.time_minutes = 0;
+  gps_uart->status.time_seconds = 0;
 
-    gps_uart->thread = furi_thread_alloc();
-    furi_thread_set_name(gps_uart->thread, "GpsUartWorker");
-    furi_thread_set_stack_size(gps_uart->thread, 1024);
-    furi_thread_set_context(gps_uart->thread, gps_uart);
-    furi_thread_set_callback(gps_uart->thread, gps_uart_worker);
+  gps_uart->notifications = furi_record_open(RECORD_NOTIFICATION);
 
-    furi_thread_start(gps_uart->thread);
-    return gps_uart;
+  gps_uart->thread = furi_thread_alloc();
+  furi_thread_set_name(gps_uart->thread, "GpsUartWorker");
+  furi_thread_set_stack_size(gps_uart->thread, 1024);
+  furi_thread_set_context(gps_uart->thread, gps_uart);
+  furi_thread_set_callback(gps_uart->thread, gps_uart_worker);
+
+  furi_thread_start(gps_uart->thread);
+  return gps_uart;
 }
 
-void gps_uart_disable(GpsUart* gps_uart) {
-    furi_assert(gps_uart);
-    furi_thread_flags_set(furi_thread_get_id(gps_uart->thread), WorkerEvtStop);
-    furi_thread_join(gps_uart->thread);
-    furi_thread_free(gps_uart->thread);
-    free(gps_uart);
+void gps_uart_disable(GpsUart* gps_uart)
+{
+  furi_assert(gps_uart);
+  furi_thread_flags_set(furi_thread_get_id(gps_uart->thread), WorkerEvtStop);
+  furi_thread_join(gps_uart->thread);
+  furi_thread_free(gps_uart->thread);
+
+  furi_record_close(RECORD_NOTIFICATION);
+
+  free(gps_uart);
 }

applications/plugins/gps_nmea_uart/gps_uart.h

@@ -1,28 +1,36 @@
 #pragma once
 
 #include <furi_hal.h>
+#include <notification/notification_messages.h>
 
 #define GPS_BAUDRATE 9600
 #define RX_BUF_SIZE 1024
 
-typedef struct {
-    bool valid;
-    float latitude;
-    float longitude;
-    float speed;
-    float course;
-    float altitude;
-    char altitude_units;
-    int fix_quality;
-    int satellites_tracked;
+typedef struct
+{
+  bool valid;
+  float latitude;
+  float longitude;
+  float speed;
+  float course;
+  float altitude;
+  char altitude_units;
+  int fix_quality;
+  int satellites_tracked;
+  int time_hours;
+  int time_minutes;
+  int time_seconds;
 } GpsStatus;
 
-typedef struct {
-    FuriThread* thread;
-    FuriStreamBuffer* rx_stream;
-    uint8_t rx_buf[RX_BUF_SIZE];
+typedef struct
+{
+  FuriThread* thread;
+  FuriStreamBuffer* rx_stream;
+  uint8_t rx_buf[RX_BUF_SIZE];
 
-    GpsStatus status;
+  NotificationApp* notifications;
+
+  GpsStatus status;
 } GpsUart;
 
 GpsUart* gps_uart_enable();

applications/plugins/gps_nmea_uart/minmea.h

@@ -87,10 +87,8 @@ struct minmea_sentence_gga {
     int fix_quality;
     int satellites_tracked;
     struct minmea_float hdop;
-    struct minmea_float altitude;
-    char altitude_units;
-    struct minmea_float height;
-    char height_units;
+    struct minmea_float altitude; char altitude_units;
+    struct minmea_float height; char height_units;
     struct minmea_float dgps_age;
 };
 
@@ -181,22 +179,22 @@ struct minmea_sentence_zda {
 /**
  * Calculate raw sentence checksum. Does not check sentence integrity.
  */
-uint8_t minmea_checksum(const char* sentence);
+uint8_t minmea_checksum(const char *sentence);
 
 /**
  * Check sentence validity and checksum. Returns true for valid sentences.
  */
-bool minmea_check(const char* sentence, bool strict);
+bool minmea_check(const char *sentence, bool strict);
 
 /**
  * Determine talker identifier.
  */
-bool minmea_talker_id(char talker[3], const char* sentence);
+bool minmea_talker_id(char talker[3], const char *sentence);
 
 /**
  * Determine sentence identifier.
  */
-enum minmea_sentence_id minmea_sentence_id(const char* sentence, bool strict);
+enum minmea_sentence_id minmea_sentence_id(const char *sentence, bool strict);
 
 /**
  * Scanf-like processor for NMEA sentences. Supports the following formats:
@@ -212,70 +210,72 @@ enum minmea_sentence_id minmea_sentence_id(const char* sentence, bool strict);
  * ; - following fields are optional
  * Returns true on success. See library source code for details.
  */
-bool minmea_scan(const char* sentence, const char* format, ...);
+bool minmea_scan(const char *sentence, const char *format, ...);
 
 /*
  * Parse a specific type of sentence. Return true on success.
  */
-bool minmea_parse_gbs(struct minmea_sentence_gbs* frame, const char* sentence);
-bool minmea_parse_rmc(struct minmea_sentence_rmc* frame, const char* sentence);
-bool minmea_parse_gga(struct minmea_sentence_gga* frame, const char* sentence);
-bool minmea_parse_gsa(struct minmea_sentence_gsa* frame, const char* sentence);
-bool minmea_parse_gll(struct minmea_sentence_gll* frame, const char* sentence);
-bool minmea_parse_gst(struct minmea_sentence_gst* frame, const char* sentence);
-bool minmea_parse_gsv(struct minmea_sentence_gsv* frame, const char* sentence);
-bool minmea_parse_vtg(struct minmea_sentence_vtg* frame, const char* sentence);
-bool minmea_parse_zda(struct minmea_sentence_zda* frame, const char* sentence);
+bool minmea_parse_gbs(struct minmea_sentence_gbs *frame, const char *sentence);
+bool minmea_parse_rmc(struct minmea_sentence_rmc *frame, const char *sentence);
+bool minmea_parse_gga(struct minmea_sentence_gga *frame, const char *sentence);
+bool minmea_parse_gsa(struct minmea_sentence_gsa *frame, const char *sentence);
+bool minmea_parse_gll(struct minmea_sentence_gll *frame, const char *sentence);
+bool minmea_parse_gst(struct minmea_sentence_gst *frame, const char *sentence);
+bool minmea_parse_gsv(struct minmea_sentence_gsv *frame, const char *sentence);
+bool minmea_parse_vtg(struct minmea_sentence_vtg *frame, const char *sentence);
+bool minmea_parse_zda(struct minmea_sentence_zda *frame, const char *sentence);
 
 /**
  * Convert GPS UTC date/time representation to a UNIX calendar time.
  */
-int minmea_getdatetime(
-    struct tm* tm,
-    const struct minmea_date* date,
-    const struct minmea_time* time_);
+int minmea_getdatetime(struct tm *tm, const struct minmea_date *date, const struct minmea_time *time_);
 
 /**
  * Convert GPS UTC date/time representation to a UNIX timestamp.
  */
-int minmea_gettime(
-    struct timespec* ts,
-    const struct minmea_date* date,
-    const struct minmea_time* time_);
+int minmea_gettime(struct timespec *ts, const struct minmea_date *date, const struct minmea_time *time_);
 
 /**
  * Rescale a fixed-point value to a different scale. Rounds towards zero.
  */
-static inline int_least32_t minmea_rescale(const struct minmea_float* f, int_least32_t new_scale) {
-    if(f->scale == 0) return 0;
-    if(f->scale == new_scale) return f->value;
-    if(f->scale > new_scale)
-        return (f->value + ((f->value > 0) - (f->value < 0)) * f->scale / new_scale / 2) /
-               (f->scale / new_scale);
+static inline int_least32_t minmea_rescale(const struct minmea_float *f, int_least32_t new_scale)
+{
+    if (f->scale == 0)
+        return 0;
+    if (f->scale == new_scale)
+        return f->value;
+    if (f->scale > new_scale)
+        return (f->value + ((f->value > 0) - (f->value < 0)) * f->scale/new_scale/2) / (f->scale/new_scale);
     else
-        return f->value * (new_scale / f->scale);
+        return f->value * (new_scale/f->scale);
 }
 
 /**
  * Convert a fixed-point value to a floating-point value.
  * Returns NaN for "unknown" values.
  */
-static inline float minmea_tofloat(const struct minmea_float* f) {
-    if(f->scale == 0) return NAN;
-    return (float)f->value / (float)f->scale;
+static inline float minmea_tofloat(const struct minmea_float *f)
+{
+    if (f->scale == 0)
+        return NAN;
+    return (float) f->value / (float) f->scale;
 }
 
 /**
  * Convert a raw coordinate to a floating point DD.DDD... value.
  * Returns NaN for "unknown" values.
  */
-static inline float minmea_tocoord(const struct minmea_float* f) {
-    if(f->scale == 0) return NAN;
-    if(f->scale > (INT_LEAST32_MAX / 100)) return NAN;
-    if(f->scale < (INT_LEAST32_MIN / 100)) return NAN;
+static inline float minmea_tocoord(const struct minmea_float *f)
+{
+    if (f->scale == 0)
+        return NAN;
+    if (f->scale  > (INT_LEAST32_MAX / 100))
+        return NAN;
+    if (f->scale < (INT_LEAST32_MIN / 100))
+        return NAN;
     int_least32_t degrees = f->value / (f->scale * 100);
     int_least32_t minutes = f->value % (f->scale * 100);
-    return (float)degrees + (float)minutes / (60 * f->scale);
+    return (float) degrees + (float) minutes / (60 * f->scale);
 }
 
 /**
@@ -283,7 +283,7 @@ static inline float minmea_tocoord(const struct minmea_float* f) {
  * sentence data field.
  */
 static inline bool minmea_isfield(char c) {
-    return isprint((unsigned char)c) && c != ',' && c != '*';
+    return isprint((unsigned char) c) && c != ',' && c != '*';
 }
 
 #ifdef __cplusplus