Merge pull request #3158 from mepholic/bug/fix-rxgain-setting-post-agc-reset

Fix RX Boosted Gain setting after AGC reset is triggered

build.sh

@@ -34,6 +34,9 @@ $ sh build.sh build-repeater-firmwares
 Build all chat room server firmwares
 $ sh build.sh build-room-server-firmwares
 
+Build all kiss radio firmwares
+$ sh build.sh build-kiss-radio-firmwares
+
 Environment Variables:
   DISABLE_DEBUG=1: Disables all debug logging flags (MESH_DEBUG, MESH_PACKET_LOGGING, etc.)
                    If not set, debug flags from variant platformio.ini files are used.
@@ -242,6 +245,17 @@ build_room_server_firmwares() {
 
 }
 
+build_kiss_modem_firmwares() {
+
+#  # build specific kiss radio firmwares
+#  build_firmware "Heltec_v3_kiss_modem"
+#  build_firmware "RAK_4631_kiss_modem"
+
+  # build all room server firmwares
+  build_all_firmwares_by_suffix "_kiss_modem"
+
+}
+
 build_firmwares() {
   build_companion_firmwares
   build_repeater_firmwares
@@ -278,6 +292,8 @@ elif [[ $1 == "build-repeater-firmwares" ]]; then
   build_repeater_firmwares
 elif [[ $1 == "build-room-server-firmwares" ]]; then
   build_room_server_firmwares
+elif [[ $1 == "build-kiss-radio-firmwares" ]]; then
+  build_kiss_modem_firmwares
 elif [[ $1 == "get-companion-firmwares-to-build" ]]; then
   get_pio_envs_ending_with_string "_companion_radio_usb"
   get_pio_envs_ending_with_string "_companion_radio_ble"

src/helpers/radiolib/CustomLR1110Wrapper.h

@@ -19,7 +19,6 @@ public:
     ((CustomLR1110 *)_radio)->setMaxPayloadMillis(pm.payloadMillis);
   }
 
-  void doResetAGC() override { lr11x0ResetAGC((LR11x0 *)_radio, ((CustomLR1110 *)_radio)->getFreqMHz()); }
   bool isReceivingPacket() override {
     return ((CustomLR1110 *)_radio)->isReceiving();
   }
@@ -50,4 +49,6 @@ public:
   bool getRxBoostedGainMode() const override {
     return ((CustomLR1110 *)_radio)->getRxBoostedGainMode();
   }
+
+  void doResetAGC() override { lr11x0ResetAGC((LR11x0 *)_radio, ((CustomLR1110 *)_radio)->getFreqMHz(), getRxBoostedGainMode()); }
 };

src/helpers/radiolib/CustomLR2021.h

@@ -4,6 +4,10 @@
 #include "MeshCore.h"
 
 class CustomLR2021 : public LR2021 {
+  uint32_t _preambleMillis = 66;
+  uint32_t _maxPayloadMillis = 3934;
+  uint32_t _activityAt = 0;
+  bool _headerSeen = false;
   bool _rx_boosted = false;
 
   public:
@@ -66,11 +70,62 @@ class CustomLR2021 : public LR2021 {
 
     bool getRxBoostedGainMode() const { return _rx_boosted; }
 
+    int16_t startReceive() override {
+      // include the PREAMBLE_DETECTED irq bit in reported flags
+      return LR2021::startReceive(RADIOLIB_LR2021_RX_TIMEOUT_INF, RADIOLIB_IRQ_RX_DEFAULT_FLAGS | (1UL << RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED), RADIOLIB_IRQ_RX_DEFAULT_MASK, 0);
+    }
+
     bool isReceiving() {
       uint32_t irq = getIrqStatus();
-      bool detected = ((irq & RADIOLIB_LR2021_IRQ_SYNCWORD_VALID) || (irq & RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED));
-      return detected;
+      bool preamble = irq & RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED;  // bit 5
+      bool header   = irq & RADIOLIB_LR2021_IRQ_LORA_HEADER_VALID;  // bit 6
+      bool hdrErr   = irq & RADIOLIB_LR2021_IRQ_LORA_HDR_CRC_ERROR; // bit 9
+      uint32_t now  = millis();
+      if (hdrErr) {
+        clearIrqFlags(RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED | RADIOLIB_LR2021_IRQ_LORA_HEADER_VALID | RADIOLIB_LR2021_IRQ_LORA_HDR_CRC_ERROR);
+        _activityAt = 0;
+        _headerSeen = false;
+        return false;
+      }
+      if (!header && _headerSeen) {
+        // something cleared the header flag, reset our state.
+        _activityAt = 0; _headerSeen = false;
+        return false;
+      }
+
+      if (header) {
+        if (!_headerSeen) { _headerSeen = true; _activityAt = now; };
+        if (now - _activityAt > _maxPayloadMillis) {
+          MESH_DEBUG_PRINTLN("Clearing header IRQ after %ums", _maxPayloadMillis);
+          clearIrqFlags(RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED | RADIOLIB_LR2021_IRQ_LORA_HEADER_VALID | RADIOLIB_LR2021_IRQ_LORA_HDR_CRC_ERROR);
+          _activityAt = 0; _headerSeen = false;
+          return false;
+        }
+        return true;
+      }
+      if (preamble) {
+        if (_activityAt == 0) _activityAt = now;
+        if (now - _activityAt > _preambleMillis) {
+          clearIrqFlags(RADIOLIB_LR2021_IRQ_PREAMBLE_DETECTED);
+          _activityAt = 0;
+          MESH_DEBUG_PRINTLN("Clearing preamble IRQ after %ums", _preambleMillis);
+          return false;
+        }
+        return true;
+      }
+      _activityAt = 0; _headerSeen = false;
+      return false;
     }
+    
+    void setPreambleMillis(uint32_t preambleMillis) {
+      _preambleMillis = preambleMillis;
+      MESH_DEBUG_PRINTLN("Set _preambleMillis=%u", _preambleMillis);
+    }
+    void setMaxPayloadMillis(uint32_t payloadMillis) {
+      _maxPayloadMillis = payloadMillis;
+      MESH_DEBUG_PRINTLN("Set _maxPayloadMillis=%u", _maxPayloadMillis);
+    }
+
 
     uint8_t getSpreadingFactor() const { return spreadingFactor; }
 };

src/helpers/radiolib/CustomLR2021Wrapper.h

@@ -22,6 +22,10 @@ public:
     ((CustomLR2021 *)_radio)->setCodingRate(cr);
     updatePreamble(sf);
     applySideDetectorConfig();
+    PacketMillis pm = calcMaxPacketMillis(sf, bw, cr, preambleLengthForSF(sf));
+    ((CustomLR2021 *)_radio)->setPreambleMillis(pm.preambleMillis);
+    ((CustomLR2021 *)_radio)->setMaxPayloadMillis(pm.payloadMillis);
+
   }
 
   bool configSideDetectors(const uint8_t* sideDetSFs, uint8_t num, float bw) override {

src/helpers/radiolib/CustomSTM32WLxWrapper.h

@@ -35,5 +35,5 @@ public:
   }
   uint8_t getSpreadingFactor() const override { return ((CustomSTM32WLx *)_radio)->spreadingFactor; }
 
-  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio, getRxBoostedGainMode()); }
 };

src/helpers/radiolib/CustomSX1262Wrapper.h

@@ -41,12 +41,12 @@ public:
     ((CustomSX1262 *)_radio)->sleep(false);
   }
 
-  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
-
   bool setRxBoostedGainMode(bool en) override {
     return ((CustomSX1262 *)_radio)->setRxBoostedGainMode(en) == RADIOLIB_ERR_NONE;
   }
   bool getRxBoostedGainMode() const override {
     return ((CustomSX1262 *)_radio)->getRxBoostedGainMode();
   }
+
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio, getRxBoostedGainMode()); }
 };

src/helpers/radiolib/CustomSX1268Wrapper.h

@@ -38,12 +38,12 @@ public:
   }
   uint8_t getSpreadingFactor() const override { return ((CustomSX1268 *)_radio)->spreadingFactor; }
 
-  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio); }
-
   bool setRxBoostedGainMode(bool en) override {
     return ((CustomSX1268 *)_radio)->setRxBoostedGainMode(en) == RADIOLIB_ERR_NONE;
   }
   bool getRxBoostedGainMode() const override {
     return ((CustomSX1268 *)_radio)->getRxBoostedGainMode();
   }
+
+  void doResetAGC() override { sx126xResetAGC((SX126x *)_radio, getRxBoostedGainMode()); }
 };

src/helpers/radiolib/LR11x0Reset.h

@@ -5,7 +5,7 @@
 // Full receiver reset for LR11x0-family chips (LR1110, LR1120, LR1121).
 // Warm sleep powers down analog, calibrate(0x3F) refreshes all calibration blocks,
 // then re-applies RX settings that calibration may reset.
-inline void lr11x0ResetAGC(LR11x0* radio, float freqMHz) {
+inline void lr11x0ResetAGC(LR11x0* radio, float freqMHz, bool rx_boost_gain) {
   radio->sleep(true, 0);
   radio->standby(RADIOLIB_LR11X0_STANDBY_RC, true);
 
@@ -16,6 +16,6 @@ inline void lr11x0ResetAGC(LR11x0* radio, float freqMHz) {
   radio->calibrateImageRejection(freqMHz - 4.0f, freqMHz + 4.0f);
 
 #ifdef RX_BOOSTED_GAIN
-  radio->setRxBoostedGainMode(RX_BOOSTED_GAIN);
+  radio->setRxBoostedGainMode(rx_boost_gain);
 #endif
 }

src/helpers/radiolib/SX126xReset.h

@@ -5,7 +5,7 @@
 // Full receiver reset for all SX126x-family chips (SX1262, SX1268, LLCC68, STM32WLx).
 // Warm sleep powers down analog, Calibrate(0x7F) refreshes ADC/PLL/image calibration,
 // then re-applies RX settings that calibration may reset.
-inline void sx126xResetAGC(SX126x* radio) {
+inline void sx126xResetAGC(SX126x* radio, bool rx_boost_gain) {
   radio->sleep(true);
   radio->standby(RADIOLIB_SX126X_STANDBY_RC, true);
 
@@ -26,7 +26,7 @@ inline void sx126xResetAGC(SX126x* radio) {
   radio->setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH);
 #endif
 #ifdef SX126X_RX_BOOSTED_GAIN
-  radio->setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN);
+  radio->setRxBoostedGainMode(rx_boost_gain);
 #endif
 #ifdef SX126X_REGISTER_PATCH
   uint8_t r_data = 0;

variants/lilygo_techo_card/platformio.ini

@@ -119,3 +119,8 @@ lib_deps =
   ${LilyGo_T-Echo_Card.lib_deps}
   end2endzone/NonBlockingRTTTL@^1.3.0
   densaugeo/base64 @ ~1.4.0
+
+[env:LilyGo_T-Echo_Card_kiss_modem]
+extends = LilyGo_T-Echo_Card
+build_src_filter = ${LilyGo_T-Echo_Card.build_src_filter}
+  +<../examples/kiss_modem/>

variants/lilygo_techo_lite/platformio.ini

@@ -12,10 +12,9 @@ build_flags = ${nrf52_base.build_flags}
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
   -D SX126X_POWER_EN=30
-  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_DIO3_TCXO_VOLTAGE=3.0
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
-  -D SX126X_USE_REGULATOR_LDO=1
   -D P_LORA_TX_LED=LED_GREEN
   -D DISABLE_DIAGNOSTIC_OUTPUT
   -D ENV_INCLUDE_GPS=1
@@ -117,7 +116,7 @@ build_flags =
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
   -D SX126X_POWER_EN=30
-  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_DIO3_TCXO_VOLTAGE=3.0
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
   -D P_LORA_TX_LED=LED_GREEN
@@ -162,6 +161,7 @@ build_flags =
   -D WRAPPER_CLASS=CustomSX1262Wrapper
   -D LORA_TX_POWER=22
   -D SX126X_POWER_EN=30
+  -D SX126X_DIO3_TCXO_VOLTAGE=3.0
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
   -D P_LORA_TX_LED=LED_GREEN

variants/lilygo_techo_lite/variant.h

@@ -105,12 +105,14 @@
 #define LORA_CS                 _PINNUM(0, 11)
 #define SX126X_POWER_EN         _PINNUM(0, 30)
 #define SX126X_DIO1             _PINNUM(1, 8)
+#define SX126X_DIO2             _PINNUM(0, 5)
 #define SX126X_BUSY             _PINNUM(0, 14)
 #define SX126X_RESET            _PINNUM(0, 7)
 #define SX126X_RXEN             _PINNUM(1, 1)
 #define SX126X_TXEN             _PINNUM(0, 27)
 
 #define P_LORA_DIO_1            SX126X_DIO1
+#define P_LORA_DIO_2            SX126X_DIO2
 #define P_LORA_NSS              LORA_CS
 #define P_LORA_RESET            SX126X_RESET
 #define P_LORA_BUSY             SX126X_BUSY

variants/lilygo_teth_elite/platformio.ini

@@ -98,3 +98,8 @@ build_src_filter = ${LilyGo_TETH_Elite_sx1262.build_src_filter}
 lib_deps =
   ${LilyGo_TETH_Elite_sx1262.lib_deps}
   densaugeo/base64 @ ~1.4.0
+
+[env:LilyGo_TETH_Elite_sx1262_kiss_modem]
+extends = LilyGo_TETH_Elite_sx1262
+build_src_filter = ${LilyGo_TETH_Elite_sx1262.build_src_filter}
+  +<../examples/kiss_modem/>

variants/meshtracker_x1/platformio.ini

@@ -130,3 +130,8 @@ lib_deps = ${MeshTracker_X1.lib_deps}
   stevemarple/MicroNMEA @ ^2.0.6
   end2endzone/NonBlockingRTTTL@^1.3.0
   adafruit/Adafruit DRV2605 Library @ ^1.2.4
+
+[env:MeshTracker_X1_kiss_modem]
+extends = MeshTracker_X1
+build_src_filter = ${MeshTracker_X1.build_src_filter}
+  +<../examples/kiss_modem/>

variants/minewsemi_me25ls01/platformio.ini

@@ -21,6 +21,7 @@ build_flags = ${nrf52_base.build_flags}
   -D ENV_INCLUDE_INA219=1
 build_src_filter = ${nrf52_base.build_src_filter}
   +<helpers/*.cpp>
+  +<helpers/ui/NullDisplayDriver.cpp>
   +<../variants/minewsemi_me25ls01>
   +<helpers/sensors>
 debug_tool = jlink
@@ -55,7 +56,6 @@ build_flags = ${me25ls01.build_flags}
   ;-D PIN_BUZZER=25
   ;-D PIN_BUZZER_EN=37
 build_src_filter = ${me25ls01.build_src_filter}
-  +<helpers/ui/NullDisplayDriver.cpp>
   +<helpers/nrf52/SerialBLEInterface.cpp>
   +<../examples/companion_radio/*.cpp>
   +<../examples/companion_radio/ui-orig/*.cpp>
@@ -63,10 +63,6 @@ build_src_filter = ${me25ls01.build_src_filter}
 [env:Minewsemi_me25ls01_repeater]
 extends = me25ls01
 build_flags = ${me25ls01.build_flags}
-  -D MAX_CONTACTS=100
-  -D MAX_GROUP_CHANNELS=8
-  -D BLE_PIN_CODE=123456
-;  -D BLE_DEBUG_LOGGING=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -85,10 +81,6 @@ build_src_filter = ${me25ls01.build_src_filter}
 [env:Minewsemi_me25ls01_room_server]
 extends = me25ls01
 build_flags = ${me25ls01.build_flags}
-  -D MAX_CONTACTS=100
-  -D MAX_GROUP_CHANNELS=8
-;  -D BLE_PIN_CODE=123456
-;  -D BLE_DEBUG_LOGGING=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -103,15 +95,10 @@ build_flags = ${me25ls01.build_flags}
   -D DISPLAY_CLASS=NullDisplayDriver
 build_src_filter = ${me25ls01.build_src_filter}
   +<../examples/simple_room_server>
-  +<helpers/ui/NullDisplayDriver.cpp>
 
 [env:Minewsemi_me25ls01_terminal_chat]
 extends = me25ls01
 build_flags = ${me25ls01.build_flags}
-  -D MAX_CONTACTS=100
-  -D MAX_GROUP_CHANNELS=8
-  -D BLE_PIN_CODE=123456
-;  -D BLE_DEBUG_LOGGING=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -126,7 +113,6 @@ build_flags = ${me25ls01.build_flags}
   -D DISPLAY_CLASS=NullDisplayDriver
 build_src_filter = ${me25ls01.build_src_filter}
   +<../examples/simple_secure_chat/main.cpp>
-  +<helpers/ui/NullDisplayDriver.cpp>
 
 [env:Minewsemi_me25ls01_companion_radio_usb]
 extends = me25ls01
@@ -137,7 +123,6 @@ build_flags = ${me25ls01.build_flags}
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
   ;-D BLE_PIN_CODE=123456
-;  -D BLE_DEBUG_LOGGING=1
 ;  -D MESH_PACKET_LOGGING=1
 ;  -D MESH_DEBUG=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -147,7 +132,6 @@ build_flags = ${me25ls01.build_flags}
   -D ENABLE_USB_INTERFACE
 build_src_filter = ${me25ls01.build_src_filter}
   +<helpers/nrf52/*.cpp>
-  +<helpers/ui/NullDisplayDriver.cpp>
   +<../examples/companion_radio/*.cpp>
   +<../examples/companion_radio/ui-orig/*.cpp>
 

variants/minewsemi_me25ls01/target.cpp

@@ -4,7 +4,6 @@
 MinewsemiME25LS01Board board;
 
 RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI);
-
 WRAPPER_CLASS radio_driver(radio, board);
 
 VolatileRTCClock rtc_clock;
@@ -18,7 +17,8 @@ extern EnvironmentSensorManager sensors;
 #endif
 
 #ifdef DISPLAY_CLASS
-  NullDisplayDriver display;
+  DISPLAY_CLASS display;
+  MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
 #endif
 
 #ifndef LORA_CR

variants/minewsemi_me25ls01/target.h

@@ -11,16 +11,17 @@
 #include <helpers/sensors/EnvironmentSensorManager.h>
 #ifdef DISPLAY_CLASS
   #include <helpers/ui/NullDisplayDriver.h>
-#endif
-
-#ifdef DISPLAY_CLASS
-  extern NullDisplayDriver display;
+  #include <helpers/ui/MomentaryButton.h>
 #endif
 
 extern MinewsemiME25LS01Board board;
 extern WRAPPER_CLASS radio_driver;
 extern VolatileRTCClock rtc_clock;
 extern EnvironmentSensorManager sensors;
+#ifdef DISPLAY_CLASS
+  extern DISPLAY_CLASS display;
+  extern MomentaryButton user_btn;
+#endif
 
 bool radio_init();
 mesh::LocalIdentity radio_new_identity();

variants/muziworks_r1_neo/platformio.ini

@@ -10,6 +10,7 @@ build_flags = ${nrf52_base.build_flags}
   -D NRF52_POWER_MANAGEMENT
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D DISPLAY_CLASS=NullDisplayDriver
   -D LORA_TX_POWER=22
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
@@ -100,7 +101,6 @@ build_src_filter = ${R1Neo.build_src_filter}
   +<../examples/companion_radio/ui-orig/*.cpp>
 lib_deps =
   ${R1Neo.lib_deps}
-  ${rak4631.lib_deps}
   densaugeo/base64 @ ~1.4.0
   end2endzone/NonBlockingRTTTL@^1.3.0
 

variants/muziworks_r1_neo/target.cpp

@@ -4,12 +4,17 @@
 
 R1NeoBoard board;
 
-DISPLAY_CLASS display;
-
 RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI);
-
 WRAPPER_CLASS radio_driver(radio, board);
 
+#ifdef DISPLAY_CLASS
+  NullDisplayDriver display;
+#endif
+
+#ifdef PIN_USER_BTN 
+MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
+#endif
+
 VolatileRTCClock fallback_clock;
 AutoDiscoverRTCClock rtc_clock(fallback_clock);
 

variants/sensecap_indicator-espnow/platformio.ini

@@ -33,7 +33,7 @@ lib_deps=${esp32_base.lib_deps}
   lovyan03/LovyanGFX @ ^1.2.7
 
 [env:SenseCapIndicator-ESPNow_comp_radio_usb]
-extends =SenseCapIndicator-ESPNow
+extends = SenseCapIndicator-ESPNow
 build_flags =
   ${SenseCapIndicator-ESPNow.build_flags}
   -I examples/companion_radio/ui-new
@@ -47,4 +47,4 @@ build_src_filter = ${SenseCapIndicator-ESPNow.build_src_filter}
   +<../examples/companion_radio/*.cpp>
 lib_deps =
   ${SenseCapIndicator-ESPNow.lib_deps}
-  densaugeo/base64 @ ~1.4.0
+  densaugeo/base64 @ ~1.4.0

variants/sensecap_solar/platformio.ini

@@ -101,3 +101,8 @@ build_src_filter = ${SenseCap_Solar.build_src_filter}
 lib_deps =
   ${SenseCap_Solar.lib_deps}
   densaugeo/base64 @ ~1.4.0
+
+[env:SenseCap_Solar_kiss_modem]
+extends = SenseCap_Solar
+build_src_filter = ${SenseCap_Solar.build_src_filter}
+  +<../examples/kiss_modem/>

variants/station_g2/platformio.ini

@@ -229,7 +229,7 @@ build_flags =
   -D WIFI_DEBUG_LOGGING=1
   -D WIFI_SSID='"myssid"'
   -D WIFI_PWD='"mypwd"'
-  -D OFFLINE_QUEUE_SIZE=256  
+  -D OFFLINE_QUEUE_SIZE=256
 ; -D MESH_PACKET_LOGGING=1
 ; -D MESH_DEBUG=1
 build_src_filter = ${Station_G2.build_src_filter}
@@ -242,10 +242,8 @@ lib_deps =
 
 [env:Station_G2_kiss_modem]
 extends = Station_G2
-build_unflags =
-  -DARDUINO_USB_MODE=0
 build_flags =
   ${Station_G2.build_flags}
-  -DARDUINO_USB_MODE=1
+  -D ARDUINO_USB_MODE=1
 build_src_filter = ${Station_G2.build_src_filter}
   +<../examples/kiss_modem/>