testing GPS (experimental)

src/hal/lopy.h

@@ -4,6 +4,11 @@
 #define HAS_LED NOT_A_PIN // LoPy4 has no on board LED, so we use RGB LED on LoPy4
 #define HAS_RGB_LED GPIO_NUM_0  // WS2812B RGB LED on GPIO0
 
+// use only if your LoPy lives on a Pytrack expansion board
+//#define HAS_GPS 1
+//#define GPS_I2C GPIO_NUM_9, GPIO_NUM_8 // SDA, SCL
+//#define HAS_BUTTON GPIO_NUM_4
+
 // Hardware pin definitions for Pycom LoPy board
 #define PIN_SPI_SS    GPIO_NUM_17
 #define PIN_SPI_MOSI  GPIO_NUM_27

src/hal/lopy4.h

@@ -4,6 +4,11 @@
 #define HAS_LED NOT_A_PIN // LoPy4 has no on board LED, so we use RGB LED on LoPy4
 #define HAS_RGB_LED   GPIO_NUM_0  // WS2812B RGB LED on GPIO0
 
+// use only if your LoPy lives on a Pytrack expansion board
+//#define HAS_GPS 1
+//#define GPS_I2C GPIO_NUM_9, GPIO_NUM_8 // SDA, SCL
+//#define HAS_BUTTON GPIO_NUM_4
+
 // Hardware pin definitions for Pycom LoPy4 board
 #define PIN_SPI_SS    GPIO_NUM_18
 #define PIN_SPI_MOSI  GPIO_NUM_27

src/hal/ttgobeam.h

@@ -6,7 +6,8 @@
 //#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, GPIO_NUM_12, GPIO_NUM_15 // UBlox NEO 6M or 7M 
+#define HAS_GPS 1 // use on board GPS
+#define GPS_SERIAL 9600, SERIAL_8N1, GPIO_NUM_12, GPIO_NUM_15 // UBlox NEO 6M or 7M with default configuration
 
 // 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