Your steps look right, but there is a simpler way to do them.  Check out:
https://elinux.org/EBC_Exercise_17_Switching_a_GPIO_to_an_LED

No need to cross compile etc.

--Mark

On Tuesday, September 1, 2020 at 10:36:13 AM UTC-4 TJF wrote:

> Hi!
>
> Forget about all that device tree trouble, use libpruio 
> <http://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/index.html> 
> instead. You can configure the pin and set the desired output state by a 
> single function call in your programm running at user space (no sudo 
> commands, no rebooting, ...)
>
> gpio_setValue(Io, P9_15, 1) // configure and set high
>>
> gpio_setValue(Io, P9_15, 0) // set low
>>
>  
> You'll have faster boot, less memory consumption, and your code executes 
> much faster (compared with sysfs GPIO control).
>
> You may want to check out some examples 
> <http://users.freebasic-portal.de/tjf/Projekte/libpruio/doc/html/ChaExamples.html>
> .
>
> Regards
>

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