gpiodevice: slow GPIO twiddling on Pi 400, Pi 5 #2
Description
Running Blinkt! via gpiodevice on a Pi 400 (running Ubuntu Mantic) or a Pi 5 works but GPIO twiddling is significantly slower than the ROCK 5B.
To show a frame of 30 pixels (I had to rig up a fake Blinkt!) they take:
- Pi 400 - 215ms
- Pi 5 - 129ms
- ROCK 5B - 9ms
My Pi 400 setup:
lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 23.10
Release: 23.10
Codename: mantic
Hardware : BCM2835
Revision : c03130
Model : Raspberry Pi 400 Rev 1.0