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Code: Alles auswählen

shut.py:12: RuntimeWarning: A physical pull up resistor is fitted on this channel!
  GPIO.setup(BUTTON_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
Traceback (most recent call last):
  File "shut.py", line 24, in <module>
    main()
  File "shut.py", line 16, in main
    channel = GPIO.wait_for_edge(BUTTON_PIN, GPIO_RISING, timeout=TIMEOUT)
NameError: name 'GPIO_RISING' is not defined

Code: Alles auswählen

from gpiozero import Button
from subprocess import check_call
from signal import pause

def shutdown():
    check_call(['sudo', 'shutdown', '-h', '0'])
shutdown_button = Button(3, hold_time=2)
shutdown_button.when_held = shutdown

pause()

Code: Alles auswählen

#!/usr/bin/env python3
from RPi import GPIO
from subprocess import run

BUTTON_PIN = 5
TIMEOUT = 3000 # ms

def main():
    try:
        GPIO.setmode(GPIO.BCM)
        # GPIO5 (pin 29) set up as input. It is pulled up to stop false signals
        GPIO.setup(BUTTON_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
        while True:
            # wait for the pin to be sorted with GND and, if so, halt the system
            GPIO.wait_for_edge(BUTTON_PIN, GPIO.FALLING)
            channel = GPIO.wait_for_edge(BUTTON_PIN, GPIO.RISING, timeout=TIMEOUT)
            if channel is None:
                print("Shutting down...")
                run(["sudo", "shutdown", "-h", "0"])
    finally:
        GPIO.cleanup()

if __name__ == "__main__":
    main()

Code: Alles auswählen

from gpiozero import Button
from subprocess import check_call
from signal import pause

def shutdown():
    check_call(['sudo', 'poweroff'])
shutdown_button = Button(3, hold_time=2)
shutdown_button.when_held = shutdown

pause()