Function validHexString

RFM69_OTA.cpp:572–576

=================================================================================================================== validHexString() - walk a char stream and check all chars are valid ascii HEX chars ===================================================================================================================

// validHexString() - walk a char stream and check all chars are valid ascii HEX chars
//===================================================================================================================
uint8_t validHexString(char* hex, uint16_t expectedByteCount) {
  for (uint16_t i=0;i<expectedByteCount*2;i++)
    if (hex[i]<48 || (hex[i]>57 && hex[i]< 65) || hex[i]>70) return false;
  return true;
}

//===================================================================================================================
// resetUsingWatchdog() - Use watchdog to reset the MCU