Arduino support layer: several fixes #21039
Merged
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Contribution description
Some minor fixes and enhancements for working with Arduino sketches in RIOT.
Testing procedure
Check that diff makes sense, should be no code breaking changes.
Some feedback on the explicit
stdin
would be nice. The semantics of this pseudomodule do not seem to be defined anywhere explicitly. Maybe @benpicco has some insights?Issues/PRs references
Encountered while working on #20980