LoRa
RAK811 LoRa Tracker
Hereafter some application codes which can be used for RAK811 LoRa board provided by @RAKWireless in issue #859.
Power on for LoRa chip
pinMode(RADIO_XTAL_EN, OUTPUT); //Power LoRa module
digitalWrite(RADIO_XTAL_EN, HIGH);
External antenna receive/transmit state switching
Receive state
pinMode(RADIO_RF_CRX_RX, OUTPUT);
digitalWrite(RADIO_RF_CRX_RX, HIGH); //control LoRa work to receive
pinMode(RADIO_RF_CTX_PA, OUTPUT);
digitalWrite(RADIO_RF_CTX_PA, LOW);
Transmit state
pinMode(RADIO_RF_CRX_RX, OUTPUT);
digitalWrite(RADIO_RF_CRX_RX, LOW);
pinMode(RADIO_RF_CTX_PA,OUTPUT);
digitalWrite(RADIO_RF_CTX_PA, HIGH); //control LoRa send by PA_BOOST