RAK4631 (Arduino) good use of Radio control

WisBlock
1

I have a RAK4631 (Arduino boot loader) that i’m coding with VSCODE:

on the “lora” setup:

void setup() {
pinMode(RADIO_PWR_EN, OUTPUT);
digitalWrite(RADIO_PWR_EN, HIGH);
int state = radio.begin(frequency);
if (state == RADIOLIB_ERR_NONE) {
Serial.println(“LoRa SX126X Initialized.\n”);
} else {
Serial.print("Starting LoRa failed! State: "); Serial.println(state);
while (true);
}
radio.setDio1Action(setFlag);
radio.setSpreadingFactor(spreadingFactor);
radio.setBandwidth(signalBandwidth);
radio.setCodingRate(codingRate4);
radio.setCRC(true);
radio.setOutputPower(power);
radio.setCurrentLimit(140);
radio.setRxBoostedGainMode(true);
radio.setDio2AsRfSwitch();
radio.setTCXO(1.8);
}

my question is about the use of RADIO_PWR pin (37 = 1.05) if this works with radio.setDio2AsRfSwitch() or if it is ment to be used manually between Tx and Rx to switch Antena?

2

I am not sure about the functions of RadioLib, I am always using the SX12x-Arduino library.

The RAK4631 is set up to use DIO2 to control the RF switch direction and GPIO P1.05 (37) to power the RF switch.

How to handle this in RadioLib would be a question towards the author of that library.