Arduino and Sexton connection problem

Using Arduino Displays
1

I would like to control a relay with a nextion display via an Arduino micro. I have written the following code to test the connection between the Arduino and the display.

#include <SoftwareSerial.h>

SoftwareSerial nextion(20, 21); // RX, TX

String daten_display = "";

void setup() {
  Serial.begin(9600);
  nextion.begin(9600);
}

void loop() {
  if (nextion.available() > 0) {
    char receivedChar = nextion.read();
    daten_display += receivedChar;

    // Überprüfe auf das Ende der Übertragung (zum Beispiel '\n' oder '\r')
    if (receivedChar == '\n' || receivedChar == '\r') {
      // Vergleiche die vollständige Zeichenkette
      if (daten_display == "Button 1") {
        Serial.println("Button 1 gedrückt");
      }

      // Leere den Puffer
      daten_display = "";
    }
  }
}

Unfortunately I get the following error message:

Connecting to programmer: .
Found programmer: Id = "CATERIN"; type = S
Software Version = 1.0; No Hardware Version given.
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize=128 bytes.

Programmer supports the following devices:
Device code: 0x44

Unfortunately, I couldn't find the error. Do you have any idea what I can do?

2

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.