PSU Control with OPI H6

Development
1

Hello,
my problem with this Plugin is, that I can not get it to work with my relay which is switching with GPIO pin 117. I tired it in PSU Controll ( Switching -> System Command) with system functions like e.g. gpio write 117 1 or echo 1 > gpio117/value (to switch the relay on) but did not work.

By doing it in Armbian with following commands it works with no problems:

root@orangepioneplus:~# cd /sys/class/gpio
root@orangepioneplus:/sys/class/gpio# ls
export gpiochip0 gpiochip352 unexport
root@orangepioneplus:/sys/class/gpio# echo 117 > export
root@orangepioneplus:/sys/class/gpio# ls gpio117
active_low device direction power subsystem uevent value
root@orangepioneplus:/sys/class/gpio# echo out > gpio117/direction
root@orangepioneplus:/sys/class/gpio# cat gpio117/direction
out
root@orangepioneplus:/sys/class/gpio# echo 1 > gpio117/value
root@orangepioneplus:/sys/class/gpio# echo 0 > gpio117/value

I hope someone can help me to get this to work in PSU Control.

2

are you sure it's gpio 117 and not gpio 17?

3

Are you able to do this as a non-root user or ideally the user running OctoPrint? There's likely a permission issue. Also why are you not using the built in GPIO support?

4

@PrintedWeezl Yes it´s GPIO 117 (Orange PI one plus)

@kantlivelong You are right it is only working in root. In user mode I have no permissions. Till now I tried it with this settings (see attached pictures)

2022-04-11 08_45_07-OctoPrint
2022-04-11 08_45_07-OctoPrint1210×1101 114 KB

5

2022-04-11 08_46_02-OctoPrint
2022-04-11 08_46_02-OctoPrint1207×1102 119 KB

6

Take a look at Notes to installing Octoprint on Armbain

7

Thank you @kantlivelong. I tried to get it to work with the notes of your link. Now I have a gpio group and added my root and my username to it. I also have permissions but still there is no GPIO Device at the PSU-Control available :frowning:
weix@orangepioneplus:~$ ls -l /dev/gpiochip*
crw-rw---- 1 root gpio 254, 0 Apr 26 15:00 /dev/gpiochip0
crw-rw---- 1 root gpio 254, 1 Apr 26 15:00 /dev/gpiochip1

After installing libgpiod.git/ I also tried some code of the Sunxi page -> GPIO - linux-sunxi.org
GPIO pin 117 is working when calling in root and also in usermode (after password input):

sudo gpioset gpiochip1 117=1 //switching on
sudo gpioset gpiochip1 117=0 //switching off

but lines like these do not work?!:

root@orangepioneplus:~/octoprint# sudo gpioset gpiochip0 117=1
gpioset: error setting the GPIO line values: Invalid argument

root@orangepioneplus:~/octoprint# modprobe gpio-sunxi
modprobe: FATAL: Module gpio-sunxi not found in directory /lib/modules/5.15.25-sunxi64

Do I need this to set the rules which are described at the notes from your link above?

# /etc/udev/rules.d/96-gpio.rules
SUBSYSTEM=="gpio*", PROGRAM="/bin/sh -c '\
    chown -R root:gpio /sys/class/gpio && chmod -R 0770 /sys/class/gpio &&\
    chown -R root:gpio /sys/devices/platform/sunxi-pinctrl/gpio && chmod -R 0770 /sys/devices/platform/sunxi-pinctrl/gpio'"

And here my octoprint log which is maybe also important:

2022-04-27 09:32:35,991 - octoprint.plugins.psucontrol - INFO - Periphery version: (2, 3, 0)
2022-04-27 09:32:35,992 - octoprint.plugins.psucontrol - INFO - Using GPIO for On/Off
2022-04-27 09:32:35,992 - octoprint.plugins.psucontrol - INFO - Configuring GPIO for pin 117
2022-04-27 09:32:35,992 - octoprint.plugins.psucontrol - ERROR - Exception while setting up GPIO pin 117
Traceback (most recent call last):
  File "/octoprint/plugins/lib/python3.8/site-packages/octoprint_psucontrol/__init__.py", line 190, in configure_gpio
    pin = periphery.GPIO(self.config['GPIODevice'], self.config['onoffGPIOPin'], initial_output)
  File "/octoprint/plugins/lib/python3.8/site-packages/periphery/gpio.py", line 496, in __init__
    self._open(path, line, direction, edge, bias, drive, inverted, label)
  File "/octoprint/plugins/lib/python3.8/site-packages/periphery/gpio.py", line 503, in _open
    raise TypeError("Invalid path type, should be string.")
TypeError: Invalid path type, should be string.

Thanks in advance!

8

For the sake of testing does the plugin work in a separate venv running as root?

The post I linked likely won't apply to your environment exactly the same as it's different hardware.

9

This was also very recently published to the plugins repo. Might be worth trying as well.

10

Installed Octoprint in a "new way" and now I see my GPIO-Device at the PSU-Control plugin :slight_smile:
With your link I got the whole thing to work - Thanks again!