#define RED 4 
#define GREEN 3 
#define BLUE 2 

String comand;
byte wait;
int jober;
int looper;
int IDarg = 0;
String ParsedCommand[20];

void setup() {
  Serial.begin(9600);
  pinMode(RED, OUTPUT); 
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT); 
}

char getCharCommand(){
  if (Serial.available() > 0) {
    char cmdraw = Serial.read();
    if (cmdraw > 0) return cmdraw;
  }
  
}

void proc(String* com) {
  if(com == "RGBLR") {
    Serial.println("Введите 1 или 2");
    wait = 1;
    jober = 1;
  }
}

void job() {
  if (Serial.available()>0) {
    char prom = Serial.read();
    if (jober == 1) {
      if (prom == 1) {
        digitalWrite(RED, HIGH);
      } else {
        digitalWrite(RED, LOW);
      }
    }
  }
}

void loop() {
  if (wait == 1) { job; }
  while (looper<100) {
    char CharCommand = getCharCommand();
    if (CharCommand != "?") {
      Serial.print(CharCommand);
      ParsedCommand[IDarg] += CharCommand;
      Serial.println(" ");
      proc(ParsedCommand);
      IDarg = 0;
      for (int i = 0;i<=20;i++) {ParsedCommand[i]="";}
      looper++;
    }
  }
}