from machine import Pin
import time

taster_hoch = Pin(1, Pin.IN, Pin.PULL_UP)
taster_runter = Pin(2, Pin.IN, Pin.PULL_UP)
taster_rechts = Pin(3, Pin.IN, Pin.PULL_UP)
taster_links = Pin(4, Pin.IN, Pin.PULL_UP)

def schleife():
    if not taster_runter.value(): print('Runter gedrueckt!')
    if not taster_rechts.value(): print('Rechts gedrueckt!')
    if not taster_links.value(): print('Links gedrueckt!')
    if not taster_hoch.value(): print('Hoch gedrueckt!')

while True:
    schleife()
    time.sleep(0.2)