Serial.read(serialBuffer,TIMEOUT) can't work under lorawan?

[jackqfzhang]

Serial.read(serialBuffer,TIMEOUT) worked well on stand alone application ,

but size = Serial.read(serialBuffer,TIMEOUT) always return 0 under lorawan example (disable AT command)

For example : Lorawan

void processCmd() { size = Serial.read(serialBuffer,TIMEOUT); if(size) { Serial.printf("rev data size %d : ",size); Serial.write(serialBuffer,size); } }

void loop() {

  processCmd();


switch( deviceState )
{
	case DEVICE_STATE_INIT:
	{

#if(LORAWAN_DEVEUI_AUTO) LoRaWAN.generateDeveuiByChipID(); #endif #if(AT_SUPPORT) getDevParam(); #endif printDevParam(); LoRaWAN.init(loraWanClass,loraWanRegion); deviceState = DEVICE_STATE_JOIN; break; } case DEVICE_STATE_JOIN: { LoRaWAN.join(); break; } case DEVICE_STATE_SEND: { prepareTxFrame( appPort ); LoRaWAN.send(); deviceState = DEVICE_STATE_CYCLE; break; } case DEVICE_STATE_CYCLE: { // Schedule next packet transmission txDutyCycleTime = appTxDutyCycle + randr( 0, APP_TX_DUTYCYCLE_RND ); LoRaWAN.cycle(txDutyCycleTime); deviceState = DEVICE_STATE_SLEEP; break; } case DEVICE_STATE_SLEEP: { LoRaWAN.sleep(); break; } default: { deviceState = DEVICE_STATE_INIT; break; } } }