Fixed GPS for M3 and disabled log

variants/thinknode_m3/platformio.ini

@@ -27,7 +27,7 @@ build_flags = ${nrf52_base.build_flags}
   -D P_LORA_TX_LED_ON=LOW
   -D LR11X0_DIO_AS_RF_SWITCH=true
   -D LR11X0_DIO3_TCXO_VOLTAGE=3.3
-  -D MESH_DEBUG=1
+;  -D MESH_DEBUG=1
   -D ENV_INCLUDE_GPS=1
 build_src_filter = ${nrf52_base.build_src_filter}
   +<helpers/*.cpp>

variants/thinknode_m3/variant.cpp

@@ -87,7 +87,10 @@ void initVariant()
 
   pinMode(PIN_GPS_POWER, OUTPUT);
   pinMode(PIN_GPS_EN, OUTPUT);
-  pinMode(PIN_GPS_RESET, OUTPUT);
+  // PIN_GPS_RESET (pin 25 / REINIT) is intentionally left floating (input).
+  // Driving it HIGH holds the L76K silent, so it never streams NMEA and the
+  // firmware reports "no GPS". Letting it float lets the module run.
+  // See GPS_RESET (-1) in variant.h.
 
   // Power on gps but in standby
   digitalWrite(PIN_GPS_EN, LOW);

variants/thinknode_m3/variant.h

@@ -97,7 +97,11 @@
 
 #define PIN_GPS_POWER               (14)
 #define PIN_GPS_EN                  (21)            // STANDBY
-#define PIN_GPS_RESET               (25)            // REINIT
+#define PIN_GPS_RESET               (25)            // REINIT - must FLOAT; driving it (esp. HIGH) silences the L76K
+// The M6's L76K streams NMEA on its own and must not have its REINIT pin driven.
+// Tell the location provider there is no reset pin so it never touches pin 25
+// (driving it HIGH holds the module silent).
+#define GPS_RESET                   (-1)
 #define GPS_RESET_ACTIVE            LOW
 #define GPS_EN_ACTIVE               HIGH
 #define GPS_BAUDRATE                9600