hallInterrupt.py

import RPi.GPIO as GPIO

hall_sensor_pin = 24

GPIO.setmode( GPIO.BCM )
GPIO.setup( hall_sensor_pin, GPIO.IN, GPIO.PUD_UP)

print "linker hall_sensor pin 24"

def hallCallback(gpioNum):
    print("fallende Flanke auf GPIO %s"%gpioNum)

GPIO.add_event_detect(hall_sensor_pin, GPIO.FALLING, callback=hallCallback, bouncetime=200)

try:
    while True:
        print "Warte..."
        raw_input()

except KeyboardInterrupt:
    print " bye bye "

GPIO.cleanup()