I am having an issue setting up button detection on the Adafruit 128x64 OLED Bonnet for Raspberry Pi. Pin 15 GPIO 22 gets an exception when setting up the call back. I know the button (joystick down click) works because your demo code works. But I am using GPIO unlike your code. My code and error output is attached.
Also, if I don't sleep for a short time between buttons, other buttons fail the setup.
This is on a Pi Zero W 1.3 with all updates. I have tried running with sudo, doesn't help.
Edge detection exception
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- RandyBryant3757
- Posts: 12
- Joined: Sat Aug 27, 2022 4:42 pm
Edge detection exception
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- mikeysklar
- Posts: 13936
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Edge detection exception
Please work from the provided Python example code. We stopped using RPi.GPIO years ago.
Code: Select all
# Input pins:
button_A = DigitalInOut(board.D5)
button_A.direction = Direction.INPUT
button_A.pull = Pull.UP
button_B = DigitalInOut(board.D6)
button_B.direction = Direction.INPUT
button_B.pull = Pull.UP
button_L = DigitalInOut(board.D27)
button_L.direction = Direction.INPUT
button_L.pull = Pull.UP
button_R = DigitalInOut(board.D23)
button_R.direction = Direction.INPUT
button_R.pull = Pull.UP
button_U = DigitalInOut(board.D17)
button_U.direction = Direction.INPUT
button_U.pull = Pull.UP
button_D = DigitalInOut(board.D22)
button_D.direction = Direction.INPUT
button_D.pull = Pull.UP
button_C = DigitalInOut(board.D4)
button_C.direction = Direction.INPUT
button_C.pull = Pull.UP
https://learn.adafruit.com/adafruit-128 ... up-3024382Next up we define the pins that are used for the joystick and buttons. The Joystick has Left, Right, Center (press in), Up and Down. There's also the A and B buttons on the right. Each one should be set as an input with pull-up resistor (Pull.UP in the code)
Please be positive and constructive with your questions and comments.