[HowTo] Install Fan SHIM on Manjaro ARM

[Cyber-Oto]

[HowTo] Install Fan SHIM on Manjaro ARM

Instructions how to install Fan SHIM, with no code changes (tested on KDE):

• Install python-configparser (5.0.0-1)
• Install latest Fan SHIM
  git clone https://github.com/pimoroni/fanshim-python
cd fanshim-python
sudo ./install.sh
• latest version of psutil will be installed by ./install-service.sh script
  cd examples
sudo ./install-service.sh --on-threshold 65 --off-threshold 55 --delay 2

System:    Kernel: 4.19.114-1-MANJARO-ARM aarch64 bits: 64 compiler: gcc v: 9.2.0 Desktop: KDE Plasma 5.18.4
           tk: Qt 5.14.2 wm: kwin_x11 dm: SDDM Distro: Manjaro ARM
Machine:   Type: ARM Device System: Raspberry Pi 4 Model B Rev 1.1 details: BCM2835 rev: c03111 serial: <filter>

[user@pi4 ~]$ systemctl status pimoroni-fanshim.service
● pimoroni-fanshim.service - Fan Shim Service
     Loaded: loaded (/etc/systemd/system/pimoroni-fanshim.service; enabled; vendor preset: disabled)
     Active: active (running) since Mon 2020-04-20 14:27:04 CEST; 46min ago
   Main PID: 327 (python3)
      Tasks: 2 (limit: 4265)
     Memory: 15.5M
     CGroup: /system.slice/pimoroni-fanshim.service
             └─327 /usr/bin/python3 /home/cyberoto/Projects/fanshim-python/examples/automatic.py --on-threshold 65 --off-threshold>

[HeadyWook]

it should be
https://github.com/pimoroni/fanshim-python.git

[Cyber-Oto]

Both ways produce the same result.

git clone https://github.com/pimoroni/fanshim-python results in

Cloning into 'fanshim-python'...
remote: Enumerating objects: 6, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 503 (delta 0), reused 2 (delta 0), pack-reused 497
Receiving objects: 100% (503/503), 84.14 KiB | 495.00 KiB/s, done.
Resolving deltas: 100% (307/307), done.

git clone https://github.com/pimoroni/fanshim-python.git results in

Cloning into 'fanshim-python'...
remote: Enumerating objects: 6, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 503 (delta 0), reused 2 (delta 0), pack-reused 497
Receiving objects: 100% (503/503), 84.14 KiB | 638.00 KiB/s, done.
Resolving deltas: 100% (307/307), done.

I used the listed installation steps from README.md to create this short howto.

[Crazyk031]

Trying to get this to work on minimal. Haven't been able to iron it out yet.

https://ybin.me/p/7ec74707b57e7ddd#fYmSQw/ItSkvCdyQJXUAWMdKH2RExx/UxkxfcHxSZws=

[HeadyWook]

Both ways produce the same result.

git clone https://github.com/pimoroni/fanshim-python results in

Cloning into 'fanshim-python'...
remote: Enumerating objects: 6, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 503 (delta 0), reused 2 (delta 0), pack-reused 497
Receiving objects: 100% (503/503), 84.14 KiB | 495.00 KiB/s, done.
Resolving deltas: 100% (307/307), done.

git clone https://github.com/pimoroni/fanshim-python.git results in

Cloning into 'fanshim-python'...
remote: Enumerating objects: 6, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 503 (delta 0), reused 2 (delta 0), pack-reused 497
Receiving objects: 100% (503/503), 84.14 KiB | 638.00 KiB/s, done.
Resolving deltas: 100% (307/307), done.

I used the listed installation steps from README.md to create this short howto.

This was what I got:

What do you think was going on?

[Cyber-Oto]

It seems that you are still using Python 2 and missing pip.

You can check what Python package is available, e.g. pacman -Qs python-pip. If there is no output after running the above command, that means that the package is not installed. In order to install it, run sudo pacman -Syu python-pip.

Notes:

• all python3 packages are prefixed python-, whereas python2 packages are prefixed python2-.
• be extra careful not to use sudo with pip. If you use sudo to install packages using pip you may get issues later on when installing packages using pacman.

[zeldaboch]

Trying to get this to work on minimal. Haven't been able to iron it out yet.

https://ybin.me/p/7ec74707b57e7ddd#fYmSQw/ItSkvCdyQJXUAWMdKH2RExx/UxkxfcHxSZws=

Same as you, i also noticed that the scrip also call for RPi.GPIO that is not present in manjaro repo, but python-raspberry-gpio

[theremotheman]

Trying to get this to work on minimal. Haven't been able to iron it out yet.
https://ybin.me/p/7ec74707b57e7ddd#fYmSQw/ItSkvCdyQJXUAWMdKH2RExx/UxkxfcHxSZws=

Same as you, i also noticed that the scrip also call for RPi.GPIO that is not present in manjaro repo, but python-raspberry-gpio

Run pip install RPi.GPIO (without sudo) and You’re good to go

[fryfrog]

Can't you use the AUR w/ Manjaro? I made a fanshim AUR package.

[jpmvferreira]

I'm planning on getting a fanshim for myself and I have my Raspberry Pi 4 running Manjaro ARM so I'll check that out myself aswell, although after checking the AUR I have a small question, in your systemd unit file you have /usr/bin/fanshim while this github repo as something like python fanshim, does that mean that if I were to download from the AUR I would compile the python script named automatic.py and use it as a binary? Would that improve performance aswell?

[fryfrog]

It would not improve performance, it just runs the python script like normal. There is #!/usr/bin/env python3 at the top, which is why it doesn't need to be run like python <script>. There is something wrong on aarch64 though, I just put it on one of my Pi 4s and fanshim doesn't think it is on a Pi. Probably something kernel 5.8 related.

[jpmvferreira]

I installed from your AUR package, it seems like there's a missing module, output from journatlctl -u fanshim:

Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: Started Fan Shim Service.
Sep 07 12:57:17 UD-TinyPiNAS fanshim[513]: Traceback (most recent call last):
Sep 07 12:57:17 UD-TinyPiNAS fanshim[513]:   File "/usr/bin/fanshim", line 2, in <module>
Sep 07 12:57:17 UD-TinyPiNAS fanshim[513]:     from fanshim import FanShim
Sep 07 12:57:17 UD-TinyPiNAS fanshim[513]:   File "/usr/lib/python3.8/site-packages/fanshim/__init__.py", line 1, in <module>
Sep 07 12:57:17 UD-TinyPiNAS fanshim[513]:     import RPi.GPIO as GPIO
Sep 07 12:57:17 UD-TinyPiNAS fanshim[513]: ModuleNotFoundError: No module named 'RPi'
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: fanshim.service: Main process exited, code=exited, status=1/FAILURE
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: fanshim.service: Failed with result 'exit-code'.
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: fanshim.service: Scheduled restart job, restart counter is at 5.
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: Stopped Fan Shim Service.
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: fanshim.service: Start request repeated too quickly.
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: fanshim.service: Failed with result 'exit-code'.
Sep 07 12:57:17 UD-TinyPiNAS systemd[1]: Failed to start Fan Shim Service.

Calling it directly from a terminal gives the same error.

fanshim --help
Traceback (most recent call last):
  File "/usr/bin/fanshim", line 2, in <module>
    from fanshim import FanShim
  File "/usr/lib/python3.8/site-packages/fanshim/__init__.py", line 1, in <module>
    import RPi.GPIO as GPIO
ModuleNotFoundError: No module named 'RPi'

However this might be an issue with the AUR package python-raspberry-gpio which handles the RPi python module, I haven't seen anybody run into the same issue so it's probably me and/or the AUR package on my system so I wrote them a comment there, if I find a fix I'll also post it here to ensure a proper install on Manjaro ARM.

My system:

• Raspberry Pi 4 1 GB RAM
• Manjaro ARM (aarch64)
• Kernel 5.4
• Latest updates

[fryfrog]

I installed an Arch Linux aarch64 and had some issues, it didn't think it was a Pi. I didn't get much further than that though. :(

[jpmvferreira]

I think I've going something, when I run python from the terminal as usual I get:

Python 3.8.5 (default, Sep  5 2020, 17:18:53) 
[GCC 10.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

I thought to myself, if the module isn't found, then maybe it's in the wrong place, otherwise it would return an error.
Python packages, at least to my knowledge, are stored in /lib/pythonX.X, after going there I find that I have two versions of Python there, /lib/python3.7 and /lib/python3.8, and on the Python 3.7 folder I found this:

$ (/lib/python3.7/site-packages) find * | grep RPi
RPi
RPi/GPIO
RPi/GPIO/__pycache__
RPi/GPIO/__pycache__/__init__.cpython-37.pyc
RPi/GPIO/__pycache__/__init__.cpython-37.opt-1.pyc
RPi/GPIO/__init__.py
RPi/__pycache__
RPi/__pycache__/__init__.cpython-37.pyc
RPi/__pycache__/__init__.cpython-37.opt-1.pyc
RPi/__init__.py
RPi/_GPIO.cpython-37m-aarch64-linux-gnu.so
RPi.GPIO-0.7.0-py3.7.egg-info

Apparently, they're all being installed as a Python 3.7 package, instead of a Python 3.8 package.
I tried the quick and definitely not recommended approach of just copying the files from /lib/python3.7 to /lib/python3.8 but it returned a similar error when running fanshim:

$ fanshim --help
Traceback (most recent call last):
  File "/usr/bin/fanshim", line 2, in <module>
    from fanshim import FanShim
  File "/usr/lib/python3.8/site-packages/fanshim/__init__.py", line 1, in <module>
    import RPi.GPIO as GPIO
  File "/usr/lib/python3.8/site-packages/RPi/GPIO/__init__.py", line 23, in <module>
    from RPi._GPIO import *
ModuleNotFoundError: No module named 'RPi._GPIO'

Running Python from the terminal outputs the same:

$ python
Python 3.8.5 (default, Sep  5 2020, 17:18:53) 
[GCC 10.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import RPi.GPIO as GPIO
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3.8/site-packages/RPi/GPIO/__init__.py", line 23, in <module>
    from RPi._GPIO import *
ModuleNotFoundError: No module named 'RPi._GPIO'

Which means I believe it's because of the naming scheme rather than compatibility with Python 3.8, as there's almost no differences between Python 3.7 and Python 3.8. Now the problem is I'm not sure which packages puts this here, and where to put this bug report, my guess it's python-raspberry-gpio from the AUR, but any further help is greatly appreciated.

[fryfrog]

You should be able to get them in the right place by re-installing the dependencies.

[jpmvferreira]

Okay I've figured it out, apparently if you're running Manjaro ARM there's a package in the official repositories that's named python-raspberry-gpio which is still in Python 3.7. The workaround is to install that package straight from the AUR using the --aur flag: yay --aur python-raspberry-gpio

However now I'm running into compiling issues. I'll also post this in the Manjaro ARM forums because they have an outdated package anyways.

If you want to help with the debugging of the compiling errors here's the error:

collect2: error: ld returned 1 exit status
error: command 'gcc' failed with exit status 1
==> ERROR: A failure occurred in package().
    Aborting...
error making: python-raspberry-gpio

And the full log here over at pastebin