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Added to documentation to warn against problem with libgpiod ver <= 1.0 #2426

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Sep 25, 2025
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Added to documentation to warn against problem with libgpiod ver <= 1.0 #2426

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8 changes: 6 additions & 2 deletions Documentation/gpio-linux-libgpiod.md
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Expand Up @@ -40,15 +40,19 @@ for (int i = 0; i < 5; i++)

## libgpiod version support

Currently (12/23) dotnet-iot supports v0, v1 and v2 of libgpiod.
Dotnet-iot supports v0, v1 and v2 of libgpiod.

The following table shows which driver supports which library version

| LibGpiodDriverVersion | Libgpiod version (documented) |
| --------------------- | ----------------------------- |
| V1 | 0.x to 1.x |
| V1 | 0.x to 1.0.x (Partial support) 1.1 - 1.x (Supported)|
| V2 | 2.x |

NOTE: Due to a [breaking change in the values of enums in the libgpiod](
https://git.kernel.org/pub/scm/libs/libgpiod/libgpiod.git/commit/?id=783ff2e3c70788cdd1c65cba9ee0398bda5ebcda), only libgpiod versions 1.1 and later can be expected to function reliably with the V1 driver.
To check what libgpiod packages you have on a deb based system, use: ``` $apt show libgpiod* ```

## Choose LibGpiodDriver Version

If you want to explicitly select the version of the libgpiod driver, to target a specific library version, there are following options:
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