Getting PiGlow working on Arch Linux with Raspberry Pi 2
Jon Bryan Arch Linux, Gist, Linux 0 Comments
It initially seemed like a trivial task; after all getting the PiGLow working under Raspian was very simple!
But under Arch the method is significantly different…So, after digging about, getting all the pieces together – this is what I have and it works!
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| nano /boot/config.txt | |
| Add: | |
| device_tree_param=bcm2709-rpi-2-b.dtb | |
| device_tree_param=i2c1=on | |
| device_tree_param=spi=on | |
| nano /etc/modules-load.d/raspberrypi.conf | |
| Add: i2c-dev | |
| pacman -Syu | |
| pacman -S python-pip base-devel i2c-tools python-psutil | |
| pip install RPi.GPIO | |
| pip install cffi | |
| pip install smbus-cffi | |
| Reboot | |
| Get the PiGlow library and examples from https://github.com/benleb/PyGlow |
Now to get this to run on start-up…
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| nano /etc/systemd/system/cpu-py.service | |
| Add: | |
| [Unit] | |
| Description=cpu piglow python script | |
| After=syslog.target network.target | |
| [Service] | |
| ExecStart=/usr/bin/python /usr/share/piglow/cpu.py | |
| Restart=on-abort | |
| [Install] | |
| WantedBy=multi-user.target | |
| Save: Ctrl o, then Exit: Ctrl x | |
| systemctl daemon-reload | |
| systemctl start cpu-py.service | |
| Does it work? If yes, then: | |
| systemctl enable cpu-py.service | |
| Reboot - script should start automatically! |