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I'm planning to make a car robot with RPi. I have a python script named 'abc.py', and I'd like to kill the python program and cleanup GPIOs used in abc.py when a button connected to GPIO is pressed. What should I do?

  • 2
    I would alter the script to detect a GPIO level change and then exit the script. – joan Dec 23 '16 at 9:00
  • @joan's suggestion is definitely the simplest and cleanest way to go about doing this. I would suggest looking into a concept called "interrupts". – Jacobm001 Dec 27 '16 at 19:53
  • That being said, as is, your question is too vague to be considered on topic here. Please see the help center for more information about asking good questions. – Jacobm001 Dec 27 '16 at 19:54
1

If the button is connected to a GPIO pin and a GND pin,

button_gpio=<Button GPIO pin here>
GPIO.setup(button_gpio, GPIO.IN, pull_up_down = GPIO.PUD_UP)
while True:
    if (GPIO.input(button_gpio) == 0):
        print(“Button pressed”)
        GPIO.cleanup()
        exit()

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