//Michael Lackner
//Steigende, fallende Flanke
//20.05.2025

#include <Arduino.h>
 
const int BUTTON_PIN = 3;
int zaehler = 0;
int lastButtonState = HIGH;
int currentButtonState;
 
void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  Serial.begin(115200);
}
 
void loop() {
  currentButtonState = digitalRead(BUTTON_PIN);
 
  if (currentButtonState == HIGH && lastButtonState == LOW) {
    zaehler--;
    Serial.print("Steigende Flanke → Zähler: ");
    Serial.println(zaehler);
  }
 
  if (currentButtonState == LOW && lastButtonState == HIGH) {
    zaehler++;
    Serial.print("Fallende Flanke → Zähler: ");
    Serial.println(zaehler);
  }
 
  lastButtonState = currentButtonState;
 
  delay(10);
}