WIFI, client read serial from server and turn on LED

Using Arduino Programming Questions
1

hi.
The slave communicates with the master via WIFI(esp32, SERVER and client), and when receiving the specified serial(0x02), the built-in LED must be turned on. What is wrong?

master(SERVER)

 if (currentSensorState != lastSensorState) {


              if (currentSensorState == 1) // heat switch off
              {


                
                client.write(0x02);

                digitalWrite(2, LOW);
                delay(1000);
                digitalWrite(2, HIGH);

              }

slave(client)

  {
    byte x = client.read();     //expecying numerical value; so, declare byte type variable
    if ( x == 0x02
       )

    {
      digitalWrite(led, HIGH);// perform some action
      delay(1000);
      digitalWrite(led, LOW);
    }
    else {
      digitalWrite(led, LOW);// maybe perform some other action

    }
  }
2

Don’t post snippets (Snippets R Us!)

3

I won't do that from now on. so sorry about that.

4

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