Access GPIO pins over Lua

[Michal Lenc <mi...@seznam.cz>]

Hello,

has anyone tried accessing GPIO pins over Lua? I have tried LED example
presented at NuttX workshop a year or two ago and userled driver is
working fine, but using the same code on GPIO registered pin fails
(assert on open). I suppose io.open is implemented only for userleds and
does not work for GPIO? Thanks.

Best regards,

Michal Lenc

Re: Access GPIO pins over Lua

[Jernej Turnsek <je...@gmail.com>]

Hi,
with Luajit, one could use FFI to access NuttX GPIO functions directly. But
I am afraid that Luajit is currently available only for CM7.

On the other hand, one can write standard Lua extension in C and use it
with plain Lua to access GPIOs. There are numerous examples of how to do it
on internet.

Regards,
Jernej

On Fri, Mar 15, 2024 at 5:20 PM Michal Lenc <mi...@seznam.cz> wrote:

> Hello,
>
> has anyone tried accessing GPIO pins over Lua? I have tried LED example
> presented at NuttX workshop a year or two ago and userled driver is
> working fine, but using the same code on GPIO registered pin fails
> (assert on open). I suppose io.open is implemented only for userleds and
> does not work for GPIO? Thanks.
>
> Best regards,
>
> Michal Lenc
>
>