int taster = 7; // the number of the pushbutton pin
int LEDblau = 2; // the number of the LED pin
int LEDgruen = 4;
int LEDrot = 8;
int LEDgelb =12;
int LEDweiss =13;
// variables will change:
int initial = 0; //hold current initial
int oldstate = 0; //hold last initial
int tasterstatus = 0; // variable for reading the pushbutton status
void setup() {
pinMode(LEDblau, OUTPUT); // initialize the LED pin as an output:
pinMode(LEDgruen, OUTPUT);
pinMode(LEDrot, OUTPUT);
pinMode(LEDgelb, OUTPUT);
pinMode(LEDweiss, OUTPUT);
pinMode(tasterstatus, INPUT); // initialize the pushbutton pin as an input:
}
void loop(){
//debouncing routline to read button
tasterstatus = digitalRead(taster); //state the initial of button
if(tasterstatus == HIGH){ //check if it has been pressed
delay(50);
tasterstatus = digitalRead(taster);//state button again
if(tasterstatus == LOW){ //if it is 0 considered one press
initial = oldstate+1; //increase initial by 1
}
}else{ //check if it has been NOT pressed
delay(100);
}
switch (initial){ //0/
case 1:
digitalWrite(LEDblau, LOW);
digitalWrite(LEDgruen, LOW);
digitalWrite(LEDrot, LOW);
digitalWrite(LEDgelb, LOW);
digitalWrite(LEDweiss, HIGH);
oldstate = initial;
break;
case 2:
digitalWrite(LEDblau, LOW);
digitalWrite(LEDgruen, LOW);
digitalWrite(LEDrot, LOW);
digitalWrite(LEDgelb, HIGH);
digitalWrite(LEDweiss, LOW);
oldstate = initial;
break;
case 3: //if initial is 1
digitalWrite(LEDblau, HIGH);//on
digitalWrite(LEDgruen, LOW);//off
digitalWrite(LEDrot, LOW);//off
digitalWrite(LEDgelb, LOW);
digitalWrite(LEDweiss, LOW);
oldstate = initial; //set oldstate initial as current initial
break;
case 4:
digitalWrite(LEDblau, LOW);
digitalWrite(LEDgruen, HIGH);
digitalWrite(LEDrot, LOW);
digitalWrite(LEDgelb, LOW);
digitalWrite(LEDweiss, LOW);
oldstate = initial;
break;
case 5:
digitalWrite(LEDblau, LOW);
digitalWrite(LEDgruen, LOW);
digitalWrite(LEDrot, HIGH);
digitalWrite(LEDgelb, LOW);
digitalWrite(LEDweiss, LOW);
oldstate = initial;
break;
default: //if initial is not 1 2 3
digitalWrite(LEDblau, LOW); //off
digitalWrite(LEDgruen, LOW);
digitalWrite(LEDrot, LOW);
digitalWrite(LEDgelb, LOW);
digitalWrite(LEDweiss, LOW);
oldstate = 0; //reset to all off/initial 0
break;
}
}