#define RED 11
#define GREEN 10
#define BLUE 9

String rot;
float zeit = 0;

void regenbogen() {
  analogWrite(RED,255); //ROT: #ff0000
  analogWrite(GREEN,0);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = ROT, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  
 
  analogWrite(RED,255); //ORANGE: #ffa500
  analogWrite(GREEN,100);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = ORANGE, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  

  analogWrite(RED,255); //GELB: #ffff00
  analogWrite(GREEN,255);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = GELB, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  
  
  analogWrite(RED,0); //GRUEN: #00ff00
  analogWrite(GREEN,255);
  analogWrite(BLUE,0);
  delay(400);
  Serial.print("Farbe = GRUEN, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");  
  
  analogWrite(RED,0); //CYAN: #00ffff
  analogWrite(GREEN,225);
  analogWrite(BLUE,255);
  delay(400);
  Serial.print("Farbe = CYAN, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");   

  analogWrite(RED,0); //BLAU: #0000ff
  analogWrite(GREEN,0);
  analogWrite(BLUE,255);
  delay(400);
  Serial.print("Farbe = BLAU, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");    

  analogWrite(RED,255); //VIOLET: #a020f0
  analogWrite(GREEN,0);
  analogWrite(BLUE,255);
  delay(400);
  Serial.print("Farbe = VIOLET, ");
  zeit = zeit + 0.2;
  Serial.print("Zeit: ");
  Serial.print(zeit, 1);
  Serial.println(" s");
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600, SERIAL_8N1); // starts serial communication between arduino and another device (eg. PC)
  pinMode(RED, OUTPUT); // Pin 3 ist ein Ausgang.    N = no parity  E = even  O = odd
  pinMode(GREEN, OUTPUT); // Pin 3 ist ein Ausgang.
  pinMode(BLUE, OUTPUT); // Pin 3 ist ein Ausgang.
  Serial.println("Eingabe: ");
}

void loop() {
  // put your main code here, to run repeatedly:
  if (Serial.available() > 0) // Get the number of bytes (characters)
  {
    if (Serial.read() == "!")   // reads the incoming(first) byte
    {
      rot = Serial.readStringUntil(";");
      rot.trim();  // removes whitespace
      rot.toInt(); // converts to int
    }
  }
    
  if (rot == "!255;0;0;")
  {
    analogWrite(RED,255); //ROT: #ff0000
    analogWrite(GREEN,0);
    analogWrite(BLUE,0);
    delay(400);
    Serial.print("Farbe = ROT, ");
    zeit = zeit + 0.2;
    Serial.print("Zeit: ");
    Serial.print(zeit, 1);
    Serial.println(" s");  
  }
  else if (rot == "OFF" || rot == "Off" || rot == "off")
  {
    zeit = 0;
    analogWrite(RED,0); //RESET
    analogWrite(GREEN,0);
    analogWrite(BLUE,0);
  }
}