Function CheckForWirelessHEX

RFM69_OTA.cpp:47–72

=================================================================================================================== CheckForWirelessHEX() - Checks whether the last message received was a wireless programming request handshake If so it will start the handshake protocol, receive the new HEX image and store it on the external flash chip, then reboot Assumes radio has been initialized and has just rec

// Assumes flash is an external SPI flash memory chip that has been initialized
//===================================================================================================================
void CheckForWirelessHEX(RFM69& radio, SPIFlash& flash, uint8_t DEBUG, uint8_t LEDpin)
{
  //special FLASH command, enter a FLASH image exchange sequence
  if (radio.DATALEN >= 4 && radio.DATA[0]=='F' && radio.DATA[1]=='L' && radio.DATA[2]=='X' && radio.DATA[3]=='?')
  {
    uint16_t remoteID = radio.SENDERID;
    if (radio.DATALEN == 7 && radio.DATA[4]=='E' && radio.DATA[5]=='O' && radio.DATA[6]=='F')
    { //sender must have not received EOF ACK so just resend
      radio.send(remoteID, "FLX?OK",6);
    }
#ifdef SHIFTCHANNEL
    else if (HandleWirelessHEXDataWrapper(radio, remoteID, flash, DEBUG, LEDpin))
#else
    else if (HandleWirelessHEXData(radio, remoteID, flash, DEBUG, LEDpin))
#endif
    {
      if (DEBUG) Serial.print(F("FLASH IMG TRANSMISSION SUCCESS!\n"));
      resetUsingWatchdog(DEBUG);
    }
    else
    {
      if (DEBUG) Serial.print("Timeout/Error, erasing written data ... ");
      //flash.blockErase32K(0); //clear any written data in first 32K block
      if (DEBUG) Serial.println(F("DONE"));
    }
  }
}