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hardware interrupts - can you

Nick Hanson

Hi, 

i was wondering if it is possible to set an i/o port pin to generate a software interrupt. i am new on the Pi and have done this on the arduino, any pointers would be much appreciated. 

  • I got this Python example from Copilot:

    import RPi.GPIO as GPIO
import time

# Pin configuration
BUTTON_GPIO = 16

# Callback function for the interrupt
def button_callback(channel):
print("Button pressed!")

# Setup
GPIO.setmode(GPIO.BCM)
GPIO.setup(BUTTON_GPIO, GPIO.IN, pull_up_down=GPIO.PUD_UP)

# Add interrupt detection
GPIO.add_event_detect(BUTTON_GPIO, GPIO.FALLING, callback=button_callback, bouncetime=200)

try:
# Keep the program running
while True:
time.sleep(1)
except KeyboardInterrupt:
GPIO.cleanup()

    This code sets up GPIO 16 to detect a FALLING edge (button press) and calls the button_callback function when the event occurs.

  • I am not sure I understand what you're after. It's my understand that in software an interrupt is really just asynchronous logic, which would be same as using a callback function. This could be tied to anything, like a timer, for example.