ESP8266 Community Forum

- Fri Jul 12, 2019 1:23 pm #83079 Hi! I'm new to the site, so I'm sorry if this is not the right place to ask this type of question, I have never used this type of forum before.
I'm currently working on a project using a NodeMCU, and had a working library made by me to send commands to it using the serial port. This commands consist of a name and arguments, separated by commas.
This was working perfectly until a few days ago, when it started randomly loosing data. I haven't worked or touched the library in a long time.
This is the code:
SerialMenu.cpp :

Code: Select allvoid Menu::serialEvent() {
  bool stringComplete = false;
  String inputString = "";
  inputString.reserve(50);
  String args[MAX_ARG_NUMBER];
  int argc = 0;
  for(int i = 0; i < MAX_ARG_NUMBER; i++){
    args[i] = "";
    args[i].reserve(10);
  }
  while (Serial.available()) {
    // get the new byte:
    char inChar = (char)Serial.read();
    // add it to the inputString:
    if (inChar == '\n') {
      stringComplete = true;
      break;
    } else if(inChar == ','){
      argc++;
    } else if(!argc){
      inputString += inChar;
    } else {
      args[argc-1] += inChar;
    }
  }
  if (stringComplete){
    handleEvents(inputString, args, argc);
  }
}

Main.ino :

Code: Select allvoid loop() {
  int packetSize = udp.parsePacket();
  if(packetSize) { //Espera un paquete UDP
    handlePacket();
  }
  if(startPairingMode){
    startPairing(pairingTime);
  }
  menu.serialEvent(); // This is the important part
  Alarm.delay(0);
  encoder.check();
  checkPir();
  panel.update();
}

The library was supossed to read an string from serial (sent from arduino ide), like this:
extwifi,ssid,password,0.0.0.0
And parse it so
inputString = "extwifi"
args[0] = "ssid"
etc.
It randomly seems to cut the message in parts. If I send the message above multiple times, it may respond:
message = "0.0.0"
or
message = "password,0.0.0.0"
or exceptionaly it reads correctly.
It is important to note that all the data is arriving correctly at the Serial.read(), you can see that if you print it immediately.
From what I can gather "argc" may be going back to the value 0 randomly, but I haven't been able to figure out why. Sorry for the long post, and thank you!