[0.0.5 b251] gpio8 vs others
Since updating to 0.0.5 b251, I lost all my GPIO's but gpio8 in /sys/class/gpio/
Is this expected?
Also, gpio8 still has no support of 'direction'.
See https://community.onion.io/topic/40/simple-python-wrapper-and-demo from @dan-l
So it's more interesting than I thought originally.
When upgrading system to b251, it overwrote /etc/config/fstab, which is documented in https://community.onion.io/topic/362/0-0-5-b251-etc-config-fstab-not-persistent
Then I didn't knew I had to export my GPIOs to get them on sysfs.
interesting thing is that I had only /sys/class/gpio/gpio8 present.
Perhaps someone messed something with gpio8 ?
root@Omega-15B0:~# echo 8 > /sys/class/gpio/export ash: write error: Device or resource busy root@Omega-15B0:~# echo 8 > /sys/class/gpio/unexport ash: write error: Invalid argument root@Omega-15B0:~#
Hi @François-Levaux, GPIO 8 is used by the Omega as the power LED (the LED that flashes on boot and then becomes solid). So it has no support for direction because it is only used for output.
According to @Lazar-Demin (here: http://community.onion.io/topic/395/gpio-pin-12/4) GPIO27 is used for controlling the power LED and GPIO8 "is wacky". Didn't find some update on the GPIO8 (and GPIO12: http://community.onion.io/topic/578/issue-with-gpio-12/12) issue.
@Matthias-Dietrich Yes See my latest response to https://community.onion.io/topic/578/issue-with-gpio-12/14