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pimoroni / unicorn-hat

Python library for Unicorn pHAT and HAT. 32 or 64 blinding ws2812 pixels for your Raspberry Pi
https://shop.pimoroni.com/products/unicorn-hat
MIT License
370 stars 131 forks source link

More info for unicornd troubleshooting? #126

Closed ferventgeek closed 4 years ago

ferventgeek commented 5 years ago

Trying to start unicornd from a service, but it's dying with only the limited debug output from systemd at the bottom. Is there a better way to troubleshoot this? Pi 3 A+. Thx.

unocornd.service

[Unit]
Description=Unicorn HAT daemon

[Service]
ExecStart=/usr/sbin/unicornd

[Install]
WantedBy=multi-user.target

journalctl -u unicornd.service

Dec 22 21:12:47 cuepi systemd[1]: Started Unicorn HAT daemon.
Dec 22 21:12:47 cuepi systemd[1]: unicornd.service: Main process exited, code=exited, status=1/FAILURE
Dec 22 21:12:47 cuepi systemd[1]: unicornd.service: Unit entered failed state.
Dec 22 21:12:47 cuepi systemd[1]: unicornd.service: Failed with result 'exit-code'.
ferventgeek commented 5 years ago

@Gadgetoid This is the issue the tweet was about. Any advice would be deeply appreciated. :)

Gadgetoid commented 4 years ago

Must be related to https://github.com/pimoroni/unicorn-hat/issues/131 for which I've pushed an, admittedly not very timely, fix.

The trouble is that unicornd uses a git submodule to include the rpi_ws281x library, so it doesn't get automatically updated as new versions of the Pi are released. I've bumped it to the latest version, which should include support up to the Pi 4.

Better debugging would require unicornd to report the error code it gets from rpi_ws281x. Possible, I believe, but needs some time and tlc to pull off.