gpio test and leds

phreon · Published in 2016-1-10 21:56:55

You should be root to run modrobe, so type 'su -' first. Looks like you are root.

Then try to locate the modprobe command with 'which modprobe' (probably /sbin/modprobe but it could be elsewhere depending what Linux image you have).

Once you'll have found the location, you can use the full path of the command to launch it, e.g. '/sbin/modprobe', just in case the location isn't in $PATH.

Last resort, if you really think you don't have that command, run (as root) 'updatedb' (takes a while), then 'locate modprobe' to check.

Check your $PATH too.

tranki · Published in 2016-1-11 00:29:27

root@OrangePI:~# /sbin/modprobe gpio-sunxi
root@OrangePI:~# echo 1 > /sys/class/gpio_sw/PA1/data
-su: /sys/class/gpio_sw/PA1/data: No such file or directory

Now the essue is that it not recognise the instruction.
I`m runnig Lubuntu 15.04 by Jacer. What does you use?

phreon · Published in 2016-1-11 09:32:53

Edited by phreon at 2016-1-11 09:34

I use loboris debian 8, both the older one and his newest.
This should not matter as modprobe is in most every distro you will see in the Opi forums. Not including android.
Did you actually locate modprobe?

tranki · Published in 2016-1-13 00:30:29

yes I can see modprobe inside sbin as you said earlier.
root@OrangePI:/# sbin/modprobe gpio-xunsi
modprobe: FATAL: Module gpio-xunsi not found.

Now prompted another issue. I figured out everything is related with gpio it was already loaded.

phreon · Published in 2016-1-13 04:43:39

Not sure what your new issue is.
Did you get modprobe to work?
Can you turn on and off a pin as I told you in my earlier post?
If you can turn on a LED you have working GPIO.

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