pub fn saul<'a, A>(w: &mut impl Write, args: A) where
A: IntoIterator<Item = &'a str>,
<A as IntoIterator>::IntoIter: ExactSizeIterator,
Expose the read side of the SAUL registry in a command that allows listing, querying and setting SAUL entries.
This formally depends on (ie. is unavailable without) the
saul feature, and practically
depends on the availability of (ie. will fail without) the riot_wrappers::saul module, which
is only present if RIOT is built with SAUL.