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Date: Sun, 17 Apr 2022 19:01:00 +0200
Mime-Version: 1.0
Subject: Re: Enable GPIO for RPi 4
Content-Language: de-DE
To: Duncan Bellamy <a.16bit.sysop@icloud.com>
Cc: ~alpine/devel@lists.alpinelinux.org
References: <2db66cb8-eb3d-e7cc-03ff-e3538b794c77@disroot.org>
 <8FF912BF-7CB4-478E-88D0-CF29DF411EA0@icloud.com>
From: Thomas Schneider <t.schneider@disroot.org>
In-Reply-To: <8FF912BF-7CB4-478E-88D0-CF29DF411EA0@icloud.com>
Content-Type: text/plain; charset=UTF-8
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Hello,

issue solved after pip install RPi.GPIO.

Thanks for your support.




Am 17.04.22 um 18:46 schrieb Duncan Bellamy:
> Can you see gpio in /sys/class/gpio ?
>
> Or an overlay might
> help: https://github.com/raspberrypi/firmware/blob/4fe2e4af02058f88f991469349a335a25a2c719d/boot/overlays/README#L1166
>
>> On 17 Apr 2022, at 15:55, Thomas Schneider <t.schneider@disroot.org>
>> wrote:
>>
>> Hello,
>>
>> I want to use a RPi power button
>> <https://howchoo.com/g/mwnlytk3zmm/how-to-add-a-power-button-to-your-raspberry-pi>
>> and this requires GPIO <https://pimylifeup.com/raspberry-pi-gpio/>.
>>
>> However, it looks like GPIO is disabled in RPi 4.
>> When I start a relevant Python program I get this error:
>> $ sudo /usr/bin/python3 /opt/fanshim-python/examples/poweroff.py
>> traceback (most recent call last):
>>   File "/opt/fanshim-python/examples/poweroff.py", line 12, in <module>
>>     GPIO.wait_for_edge(button_pin, GPIO.FALLING)
>> RuntimeError: Error waiting for edge
>>
>> Can you please advise how to fix this issue?
>>
>> This isssue is not reproducible with Raspbian OS (based on Debian).
>>
>> THX
>> Thomas
>>