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pulseio library is broken on Apple Silicon hosts

See original GitHub issue

I’ve checked two boards on Apple Silicon platform:

Adafruit MCP2221A Breakout - pulseio is not supported. Hmm, why not?
u2if firmware on RPI Pico - pulseio doesn’t work while rip pico obviously supports it! Below I’m trying to fix the issue but the library is broken because it includes invalid binaries.

Fix /opt/homebrew/lib/python3.10/site-packages/pulseio.py

...
if detector.board.any_raspberry_pi or detector.board.pico_u2if:
    from adafruit_blinka.microcontroller.bcm283x.pulseio.PulseIn import PulseIn
...

Load the library and try to use it

import pulseio
pulses = pulseio.PulseIn(board.GP0, maxlen=200, idle_state=True)
OSError: [Errno 8] Exec format error: '/opt/homebrew/lib/python3.10/site-packages/adafruit_blinka/microcontroller/bcm283x/pulseio/libgpiod_pulsein64'

Opa - the library is broken completely. So it doesn’t work for any board.

Issue Analytics

State:
Created 9 months ago
Comments:5 (5 by maintainers)

Top GitHub Comments

1reaction

caternusoncommented, Dec 14, 2022

Ideally the PR would be submitted to: https://github.com/execuc/u2if

The Adafruit repo is a fork. It was forked to allowing PRing changes back upstream to execuc. I don’t think we’d want to maintain a separate fork.

0reactions

makermelissacommented, Dec 14, 2022

@caternuson wrote this. He’ll have to speak more about why it isn’t supported in u2if.

See @Neradoc 's comment above. u2if does not have support for pulseio.

The u2if firmware is 3rd party.

Ah, I didn’t realize. Closing here for now. Perhaps somebody could submit a PR to https://github.com/adafruit/u2if to add pwmio support.