testing GPS

README.md

@@ -232,7 +232,7 @@ Note: all settings are stored in NVRAM and will be reloaded when device starts.
 
 0x80 get device configuration
 
-device answers with it's current configuration. The configuration is a C structure declared in file [globals.h](src/globals.h#L27-L45) with the following definition:
+device answers with it's current configuration. The configuration is a C structure declared in file [globals.h](src/globals.h#L32-L50) with the following definition:
 
 	byte 1:			Lora SF (7..12)
 	byte 2:			Lora TXpower (2..15)

platformio.ini

@@ -33,6 +33,7 @@ lib_deps_rgbled =
     SmartLeds@>=1.1.3
 lib_deps_gps =
     https://github.com/mikalhart/TinyGPSPlus.git  
+;beware of TinyGPSplus in PlatformIO library manager, it loads old v.092 labeled as 1.0.0 !!
 build_flags = 
 ; we need build_flag for logging, otherwise we can't use ESP_LOGx in arduino framework
 ; ---> NOTE: For production run set DEBUG_LEVEL level to NONE! <---

src/globals.h

@@ -51,14 +51,14 @@ typedef struct {
 
 #ifdef HAS_GPS
   typedef struct {
-    uint32_t latitude;
-    uint32_t longitude;
-    uint8_t hdop;
+    double latitude;
+    double longitude;
+    double hdop;
     uint32_t satellites;
-    uint16_t altitude;
+    double altitude;
     } gpsStatus_t;
   extern gpsStatus_t gps_status;        // struct for storing gps data
-  extern TinyGPSPlus gps;            // Make TinyGPS++ instance globally availabe
+  extern TinyGPSPlus gps;               // Make TinyGPS++ instance globally availabe
 #endif
 
 extern configData_t cfg;

src/gpsread.cpp

@@ -9,9 +9,9 @@ static const char TAG[] = "main";
 void gps_read(){
     gps_status.latitude = gps.location.lat();
     gps_status.longitude = gps.location.lng();
-    gps_status.satellites = (uint8_t) gps.satellites.value();
-    gps_status.hdop = (uint8_t) (gps.hdop.value() / 100);
-    gps_status.altitude = (uint16_t) gps.altitude.meters(); 
+    gps_status.satellites = gps.satellites.value();
+    gps_status.hdop = gps.hdop.value();
+    gps_status.altitude = gps.altitude.meters(); 
 }
 
 /// GPS serial feed FreeRTos Task
@@ -20,16 +20,29 @@ void gps_loop(void * pvParameters) {
     configASSERT( ( ( uint32_t ) pvParameters ) == 1 ); // FreeRTOS check
 
     HardwareSerial GPS_Serial(1);  
-    //GPS_Serial.begin(HAS_GPS);
-    GPS_Serial.begin(9600, SERIAL_8N1, 12, 15 );
 
     while(1) {
 
-        while (GPS_Serial.available()) {
-            gps.encode(GPS_Serial.read());
+        if (cfg.gpsmode)
+        {
+            // if GPS function is enabled try serial connect to GPS device
+            GPS_Serial.begin(HAS_GPS);
+            
+            while(cfg.gpsmode) {
+                // feed GPS decoder with serial NMEA data from GPS device
+                while (GPS_Serial.available()) {
+                    gps.encode(GPS_Serial.read());
+                    vTaskDelay(1/portTICK_PERIOD_MS); // reset watchdog
+                }
+            }    
+            // after GPS function was disabled, close connect to GPS device
+            GPS_Serial.end();
         }
        
         vTaskDelay(1/portTICK_PERIOD_MS); // reset watchdog
-    }    
-}
+
+    } // end of infinite loop
+
+} // gps_loop()
+    
 #endif // HAS_GPS

src/hal/ttgobeam.h

@@ -6,8 +6,7 @@
 //#define HAS_BUTTON GPIO_NUM_39 // on board button "BOOT" (next to reset button) !! seems not to work!!
 #define HAS_BATTERY_PROBE ADC1_GPIO35_CHANNEL // battery probe GPIO pin -> ADC1_CHANNEL_7
 #define BATT_FACTOR 2 // voltage divider 100k/100k on board
-//#define HAS_GPS 9600, SERIAL_8N1, 12, 15
-#define HAS_GPS 1
+#define HAS_GPS 9600, SERIAL_8N1, 12, 15
 
 // re-define pin definitions of pins_arduino.h
 #define PIN_SPI_SS    GPIO_NUM_18 // ESP32 GPIO18 (Pin18) -- HPD13A NSS/SEL (Pin4) SPI Chip Select Input

src/lorawan.cpp

@@ -129,8 +129,6 @@ void do_send(osjob_t* j){
         mydata[3] = 0;
     }
 
-    
-
     // Prepare upstream data transmission at the next possible time.
     LMIC_setTxData2(COUNTERPORT, mydata, sizeof(mydata), (cfg.countermode & 0x02));
     ESP_LOGI(TAG, "%d bytes queued to send", sizeof(mydata));

src/main.cpp

@@ -598,9 +598,6 @@ do_send(&sendjob);
 
 void loop() {
 
-    HardwareSerial GPS_Serial(1);                 
-    GPS_Serial.begin(9600, SERIAL_8N1, 12, 15 );
-
   	while (1) {
 
         // simple state machine for controlling uptime, display, LED, button, memory.
@@ -629,7 +626,7 @@ void loop() {
         }
 
         if ( (uptime() % 10000) == 0 )
-            ESP_LOGI(TAG, "GPS NMEA data passed %d / failed: %d / with fix: %d || Sats: %d / HDOP: %d || m/s: %d / %d", gps.passedChecksum(), gps.failedChecksum(), gps.sentencesWithFix(), gps.satellites.value(), gps.hdop.value(), gps.time.minute(), gps.time.second() );
+            ESP_LOGI(TAG, "GPS NMEA data: passed %d / failed: %d / with fix: %d", gps.passedChecksum(), gps.failedChecksum(), gps.sentencesWithFix());
 
         vTaskDelay(1/portTICK_PERIOD_MS); // reset watchdog