// -----------------------------------------------------------------------------------
// -----------------------------------------------------------------------------------
// ------------------------------------- WARNING -------------------------------------
// -----------------------------------------------------------------------------------
// -----------------------------------------------------------------------------------
// ---- This code is experimental and may not work and ruin the rest of your code ----
// -----------------------------------------------------------------------------------
// -----------------------------------------------------------------------------------

#include "ATCommands.h"

void led(const char *parameter)
{
  if (strlen(parameter) == 1)
    if (parameter[0] == '1')
      digitalWrite(13, HIGH);
    else if (parameter[0] == '0')
      digitalWrite(13, LOW);
}

void echo(const char *parameter)
{
  Serial.println(parameter);
}

ATClass at;

void setup()
{
  Serial.begin(9600);
  Serial.println("Type some AT shit.");
  at.attachCallback("LED", led);   // LED=1 or LED=0 to change board LED state
  at.attachCallback("ECHO", echo); // ECHO={string} without the brackets will echo the string
}

void loop()
{
  if (Serial.available() > 0)
  {
    String serialBuffer = Serial.readStringUntil('\n');
    serialBuffer.replace('\r', '\0'); // Remove ending characters if present
    serialBuffer.replace('\n', '\0'); // If terminal sends only lf this is not needed
    at.commandInput(serialBuffer.c_str());
  }
  
  delay(250);
}