Add GPS support for SenseCap Solar variant

variants/sensecap_solar/platformio.ini

@@ -8,7 +8,7 @@ build_flags = ${nrf52_base.build_flags}
   -I lib/nrf52/s140_nrf52_7.3.0_API/include/nrf52
   -I variants/sensecap_solar
   -I src/helpers/nrf52
-  -UENV_INCLUDE_GPS
+  -D ENV_INCLUDE_GPS=1
   -D NRF52_PLATFORM=1
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
@@ -24,6 +24,12 @@ build_flags = ${nrf52_base.build_flags}
   -D SX126X_DIO3_TCXO_VOLTAGE=1.8
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
+  -D PIN_GPS_TX=7
+  -D PIN_GPS_RX=6
+  -D PIN_GPS_EN=18
+  -D PIN_GPS_STANDBY=0
+  -D PIN_GPS_EN_ACTIVE=HIGH
+  -D GPS_BAUD_RATE=9600
 build_src_filter = ${nrf52_base.build_src_filter}
   +<helpers/*.cpp>
   +<helpers/sensors>
@@ -33,6 +39,7 @@ upload_protocol = nrfutil
 lib_deps =
   ${nrf52_base.lib_deps}
   ${sensor_base.lib_deps}
+  stevemarple/MicroNMEA @ ^2.0.6
 
 [env:SenseCap_Solar_repeater]
 extends = SenseCap_Solar

variants/sensecap_solar/target.cpp

@@ -2,6 +2,10 @@
 #include "target.h"
 #include <helpers/ArduinoHelpers.h>
 
+#ifdef ENV_INCLUDE_GPS
+#include <helpers/sensors/MicroNMEALocationProvider.h>
+#endif
+
 SenseCapSolarBoard board;
 
 RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI);
@@ -10,7 +14,13 @@ WRAPPER_CLASS radio_driver(radio, board);
 
 VolatileRTCClock fallback_clock;
 AutoDiscoverRTCClock rtc_clock(fallback_clock);
-EnvironmentSensorManager sensors;
+
+#ifdef ENV_INCLUDE_GPS
+MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock, PIN_GPS_STANDBY, PIN_GPS_EN);
+EnvironmentSensorManager sensors = EnvironmentSensorManager(nmea);
+#else
+EnvironmentSensorManager sensors = EnvironmentSensorManager();
+#endif
 
 bool radio_init() {
     rtc_clock.begin(Wire);

variants/sensecap_solar/target.h

@@ -9,6 +9,10 @@
 #include <helpers/ArduinoHelpers.h>
 #include <helpers/sensors/EnvironmentSensorManager.h>
 
+#ifdef ENV_INCLUDE_GPS
+#include <helpers/sensors/MicroNMEALocationProvider.h>
+#endif
+
 extern SenseCapSolarBoard board;
 extern WRAPPER_CLASS radio_driver;
 extern AutoDiscoverRTCClock rtc_clock;

variants/sensecap_solar/variant.cpp

@@ -48,9 +48,6 @@ const uint32_t g_ADigitalPinMap[] = {
 };
 
 void initVariant() {
-    pinMode(GPS_EN, OUTPUT);
-    digitalWrite(GPS_EN, LOW);
-
     pinMode(BATTERY_PIN, INPUT);
     pinMode(VBAT_ENABLE, OUTPUT);
     digitalWrite(VBAT_ENABLE, LOW);
@@ -64,8 +61,9 @@ void initVariant() {
     pinMode(LED_BLUE, OUTPUT);
     digitalWrite(LED_BLUE, LOW);
 
-    /* disable gps until we actually support it.
-    pinMode(GPS_EN, OUTPUT);
-    digitalWrite(GPS_EN, HIGH);
-    */
+#ifdef ENV_INCLUDE_GPS
+    // Initialize GPS enable pin (GPS will be powered on/off by sensor manager)
+    pinMode(PIN_GPS_EN, OUTPUT);
+    digitalWrite(PIN_GPS_EN, LOW);  // Start with GPS off
+#endif
 }

variants/sensecap_solar/variant.h

@@ -69,7 +69,8 @@
 #define PIN_GPS_TX              PIN_SERIAL1_RX
 #define PIN_GPS_RX              PIN_SERIAL1_TX
 #define PIN_GPS_STANDBY         (0)
-#define GPS_EN                  (18)
+#define PIN_GPS_EN              (18)
+#define GPS_EN                  PIN_GPS_EN  // Alias for compatibility
 
 // QSPI Pins
 #define PIN_QSPI_SCK            (21)