#include <SPI.h>
#include <RF24.h>

RF24 radio(7, 8); // (CE, CSN)

const byte address[6] = "1RF24"; 

void setup() {
  Serial.begin(9600);
  radio.begin();
  radio.setPALevel(RF24_PA_MAX); 
  radio.setChannel(125);
  radio.openReadingPipe(0,address); 
  radio.startListening();
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
 }

void loop() { 

  if(radio.available()){
    char text[2] = {0}; 
    radio.read(&text, sizeof(text)-1); 
    String code = String(text); // Array -> Zeichen ("code")
    if (code == "w") {
      digitalWrite(2,1);
      digitalWrite(3,0);
      digitalWrite(4,1);
      digitalWrite(5,0);
    }
    
    if (code == "s"){
      digitalWrite(3,1);
      digitalWrite(2,0);
      digitalWrite(4,0);
      digitalWrite(5,1);
    }
    
    //Serial.println(code);
    
    if (code=="d"){
      
      digitalWrite(2,0);
      digitalWrite(3,1);
      digitalWrite(5,0);
      digitalWrite(4,1);
    }
    
    if (code=="a"){
      digitalWrite(2,1);
      digitalWrite(3,0);
      digitalWrite(4,0);
      digitalWrite(5,1);   
    }
  } 
  
  else {
    delay(30);
    if (!radio.available()){
      digitalWrite(2,0);
      digitalWrite(3,0);
      digitalWrite(4,0);
      digitalWrite(5,0);
  }}
  delay(10);
}