[fpc-pascal] RaspberryPi GPIO access from multiple applications using /dev/gpiomem?

Bo Berglund bo.berglund at gmail.com
Tue Mar 23 00:27:26 CET 2021

On Mon, 22 Mar 2021 11:25:04 +0100, Bo Berglund via fpc-pascal
<fpc-pascal at lists.freepascal.org> wrote:

>Can two different applications access the (same) GPIO pins without permission
>In my case I only need read access to the active pins so I can display the state
>in a monitoring application I can watch via VNC. Checking a few times per second
>is enough, I think.
>But I don't know if the GPIO pins are protected when they are in use by another

Now tested and it works fine to "spy" on GPIO pins in use by another

Bo Berglund
Developer in Sweden

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