add support for adafruit feather nrf52832 - which is close to a RAK815

platformio.ini

@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = nrf52840dk ; Note: the github actions CI test build can't yet build NRF52 targets
+default_envs = feather_nrf52832 ; Note: the github actions CI test build can't yet build NRF52 targets
 
 [common]
 ; common is not currently used
@@ -178,6 +178,11 @@ board = nrf52840_dk
 extends = nrf52_base
 board = nrf52840_dk_modified
 
+; Note: By default no lora device is created for this build - it uses a simulated interface
+[env:feather_nrf52832]
+extends = nrf52_base
+board = adafruit_feather_nrf52832
+
 # For experimenting with RAM sizes
 # board_build.ldscript = linker/nrf52840_s140_sim832.ld
 

src/configuration.h

@@ -55,7 +55,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /// Convert a preprocessor name into a quoted string and if that string is empty use "unset"
 #define optstr(s) (xstr(s)[0] ? xstr(s) : "unset")
 
-#ifdef NRF52840_XXAA // All of the NRF52 targets are configured using variant.h, so this section shouldn't need to be
+#ifdef NRF52_SERIES // All of the NRF52 targets are configured using variant.h, so this section shouldn't need to be
                      // board specific
 
 //
@@ -74,7 +74,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RTC_DATA_ATTR
 
 #define LED_PIN PIN_LED1 // LED1 on nrf52840-DK
+
+// If the variant filed defines as standard button
+#ifdef PIN_BUTTON1
 #define BUTTON_PIN PIN_BUTTON1
+#endif 
 
 // FIXME, use variant.h defs for all of this!!! (even on the ESP32 targets)
 #elif defined(CubeCell_BoardPlus)
@@ -283,6 +287,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #define HW_VENDOR "ppr"
 
+#elif NRF52_SERIES
+
+#define HW_VENDOR "nrf52unknown" // FIXME - unknown nrf52 board
+
 #endif
 
 // -----------------------------------------------------------------------------

src/gps/GPS.cpp

@@ -7,10 +7,12 @@
 
 #ifdef GPS_RX_PIN
 HardwareSerial _serial_gps_real(GPS_SERIAL_NUM);
-HardwareSerial &GPS::_serial_gps = _serial_gps_real;
+HardwareSerial *GPS::_serial_gps = &_serial_gps_real;
+#elif defined(NRF52840_XXAA)
+// Assume NRF52840
+HardwareSerial *GPS::_serial_gps = &Serial1;
 #else
-// Assume NRF52
-HardwareSerial &GPS::_serial_gps = Serial1;
+HardwareSerial *GPS::_serial_gps = NULL;
 #endif
 
 bool timeSetFromGPS; // We try to set our time from GPS each time we wake from sleep

src/gps/GPS.h

@@ -30,7 +30,7 @@ class GPS : public Observable<void *>
   protected:
     bool hasValidLocation = false; // default to false, until we complete our first read
 
-    static HardwareSerial &_serial_gps;
+    static HardwareSerial *_serial_gps;
 
   public:
     int32_t latitude = 0, longitude = 0; // as an int mult by 1e-7 to get value as double

src/gps/NEMAGPS.cpp

@@ -13,9 +13,8 @@ static int32_t toDegInt(RawDegrees d)
 
 void NEMAGPS::loop()
 {
-
-    while (_serial_gps.available() > 0) {
-        int c = _serial_gps.read();
+    while (_serial_gps->available() > 0) {
+        int c = _serial_gps->read();
         // Serial.write(c);
         reader.encode(c);
     }

src/gps/UBloxGPS.cpp

@@ -10,20 +10,20 @@ UBloxGPS::UBloxGPS() : concurrency::PeriodicTask()
 bool UBloxGPS::setup()
 {
 #ifdef GPS_RX_PIN
-    _serial_gps.begin(GPS_BAUDRATE, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
+    _serial_gps->begin(GPS_BAUDRATE, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
 #else
-    _serial_gps.begin(GPS_BAUDRATE);
+    _serial_gps->begin(GPS_BAUDRATE);
 #endif
     // _serial_gps.setRxBufferSize(1024); // the default is 256
     // ublox.enableDebugging(Serial);
 
     // note: the lib's implementation has the wrong docs for what the return val is
     // it is not a bool, it returns zero for success
-    isConnected = ublox.begin(_serial_gps);
+    isConnected = ublox.begin(*_serial_gps);
 
     // try a second time, the ublox lib serial parsing is buggy?
     if (!isConnected)
-        isConnected = ublox.begin(_serial_gps);
+        isConnected = ublox.begin(*_serial_gps);
 
     if (isConnected) {
         DEBUG_MSG("Connected to UBLOX GPS successfully\n");
@@ -35,7 +35,7 @@ bool UBloxGPS::setup()
             // GPS_TX connected)
             ublox.factoryReset();
             delay(3000);
-            isConnected = ublox.begin(_serial_gps);
+            isConnected = ublox.begin(*_serial_gps);
             DEBUG_MSG("Factory reset success=%d\n", isConnected);
             ok = ublox.saveConfiguration(3000);
             assert(ok);

src/main.cpp

@@ -172,7 +172,7 @@ void initWifi()
                 }
             }
         }
-    } else
+    } else 
         DEBUG_MSG("Not using WIFI\n");
 #endif
 }

src/nrf52/main-nrf52.cpp

@@ -3,7 +3,10 @@
 #include <assert.h>
 #include <ble_gap.h>
 #include <memory.h>
-#include <nrf52840.h>
+
+#ifdef NRF52840_XXAA
+// #include <nrf52840.h>
+#endif
 
 // #define USE_SOFTDEVICE