Raspberry Pi - How to Handle GPIO Interrupts with Python 3

Learn how to use GPIO interrupts on your Raspberry Pi, using the RPi.GPIO library. Step by step explanation for both wait_for_edge() and add_event_detect() functions.

0:00 Intro
0:18 Circuit with Raspberry Pi and push button
0:55 How GPIO interrupts work
2:21 Setup the GPIO
4:08 Interrupts with GPIO.wait_for_edge()
6:35 Interrupts with GPIO.add_event_detect()
12:34 Use GPIO.BOTH to detect RISING and FALLING in the same interrupt
14:36 Outro

[davidjohnston]

Super video, this makes me want to we watch some more of your content!

[norbertbans]

Well explained and well deserved for the like and the subscription

[IZZY]

Great and detailed video, quality work!

[qzorn]

A most excellent GPIO callback demo. Will this work on the newer Orange Pi-5 Debian-Bullseye Python? Thank you.

[dravera]

Thank you for the video. I'm confused about what bouncetime means

[ShreedharShah]

I am currently using Quadrature encoder so I wanted to monitor two pins simultaneously using the event functions to see which pin gets the rising edge FIRST. Please help

[Debraj]

Is this a real interrupt? I mean, if I am running this python script, will the CPU be completely occupied with reading GPIO, or it actually uses the interrupt feature of microcontroller?

[MrSirPain]

I have a function that takes over 10 seconds to run. So I need to disable the GPIO Interrupt until the function has done its job, then reenable the GPIO Interrupt. How can I do this?

[jozefsoucik]

i am getting error: Error adding event detection: Failed to add edge detection
. By using polling method on button works fine but somehow cant figure out what is causing failing edge detection when trying to use interupts. Any suggestion?

[Indian]

sir how to print emoji in raspberry pi tkinter gui ?

[jace_Henderson]

My Pi keeps crashing once the line GPIO.setup(pin#, GPIO.OUT)
Is introduced and I can’t figure out why. Still does it with absolutely nothing connected.

[dalesmith]

when I hear the word Python, I go away. Why not do this in C or C++. Also from what I've read, the Linux kernel does not provide interrupts. Now I'm confused.