smartcarrobot_esp8266_message.js

void onMsghandler(char *topic, uint8_t* msg, unsigned int msglen) {
  if(msg[0] == 'L'){
    Serial.println("L");
    digitalWrite(ledD1, HIGH);
    delay(100);
    digitalWrite(ledD1, LOW);
  }
  if(msg[0] == 'R'){
    Serial.println("R");
    digitalWrite(ledD1, HIGH);
    delay(100);
    digitalWrite(ledD1, LOW);
  }
  if(msg[0] == 'F'){
    Serial.println("F");
    digitalWrite(ledD1, HIGH);
    delay(100);
    digitalWrite(ledD1, LOW);
  }
  if(msg[0] == 'B'){
    Serial.println("B");
    digitalWrite(ledD1, HIGH);
    delay(100);
    digitalWrite(ledD1, LOW);
  }
}