1 unstable release
0.1.0 | Jan 2, 2023 |
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#22 in #defmt
6KB
log-to-defmt
This is a logging adapter that acts as an implementation of the log crate and hands the rendered messages off to the defmt crate.
Using this is generally not recommended: Once the log infrastructure is pulled into a project, Rust's string formatting is brought in, avoiding which is a big part of the point of defmt.
However, this can be useful during development, when debugging a particular library (that optionally produces messages through log) on a platform for which a defmt output has already been established.
Maturity
The current implementation of this takes a huge amount of shortcuts: not only does it not convert log levels, it also hardwires some to the most verbose level, discards lots of information that would otherwise be available, and uses a fixed size buffer.
Future iterations of this crate are expected to address these on demand; for example, this
could gain a build time configuration mechanism for the maximum expected length, or an alloc
feature that renders the log messages to a Vec
instead of a heapless::Vec
before handing
them off to defmt as a slice.
The crate will likely introduce such features (altering its behavior) without declaring breaking changes; users are advised to configure their error levels to match which messages they expect to see.
License: MIT OR Apache-2.0
Dependencies
~1.1–1.7MB
~36K SLoC