I can enter if but not execute statements inside

[ec2021]

@crisljtc_89

 String respuesta = "";
    while (Serial2.available() > 0) {
      char receivedChar = Serial2.read();
      if (receivedChar == '\n') {
        //Serial.println(respuesta);
        delay(1000);  // Print the received message in the Serial monitor
        //respuesta = "";  // Reset the received message
      } else {
        respuesta += receivedChar;  // Append characters to the received message
      }
    }
    Serial.println(respuesta);

Just to give you some insight what the problem with this code above may be, it is worth to go walk through the code "manually" step by step:

• The while loop() will only be left if no characters available on Serial2.
• As long as Serial2.available() > 0 the code reads each single character
• and collects them in String repuesta unless it is a '\n'
• If a '\n' was received the code waits for 1 second
• If further data arrived at Serial2 within this second the while()-loop will go on adding the next characters to repuesta ...

In case that there is a time gap of more than 1 second between messages the code might work but it is not "fail-safe".