Adjust the sensor power-on sequence

variants/heltec_rc52/HeltecRC52Board.cpp

@@ -41,20 +41,16 @@ void HeltecRC52Board::begin()
 #endif
   Wire.begin();
 
-  pinMode(RADIOCORE_VFEM_CTRL, OUTPUT);
-  digitalWrite(RADIOCORE_VFEM_CTRL, HIGH);
-  pinMode(RADIOCORE_FEM_EN, OUTPUT);
-  digitalWrite(RADIOCORE_FEM_EN, HIGH);
-
   pinMode(SENSOR_RST_PIN, OUTPUT);
   digitalWrite(SENSOR_RST_PIN, HIGH);
   pinMode(SENSOR_INT, INPUT);
 
-  periph_power.begin();
 
 #ifdef NRF52_POWER_MANAGEMENT
   checkBootVoltage(&power_config);
 #endif
+  periph_power.begin();
+  periph_power.claim();
 }
 
 void HeltecRC52Board::shutdownPeripherals()

variants/heltec_rc52/platformio.ini

@@ -23,6 +23,8 @@ build_flags = ${nrf52_base.build_flags}
   -D LORA_TX_POWER=22
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
+  -D SX126X_DIO2_AS_RF_SWITCH=true
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
 build_src_filter = ${nrf52_base.build_src_filter}
   +<helpers/*.cpp>
   +<helpers/sensors>