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comprehensive-rust/src/bare-metal/aps/logging.md
Dustin J. Mitchell c04d2860e8
APS updates () 
These are some minor updates from walking through the session myself.

* Add some context to the `entry.S` slide, which is otherwise a bit
terrifying for someone who does not speak ARM assembly.
 * Include a simple, fake example of MMIO.
* Add a "Using It" section to the minimal UART segment, parallel to the
better UART
* Better explanation of the `unwrap` calls in the logging example.
Unwrap is never "unsafe", so remove that word.
 * Allow dead code in some `.rs` files.
 * Remove redundant warning about use of memory before MMU setup.
 * Rephase text about buddy-system
 * Fix lint warning in spin slide.
2025-01-07 19:07:39 +00:00

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Logging

It would be nice to be able to use the logging macros from the log crate. We can do this by implementing the Log trait.

{{#include examples/src/logger.rs:main}}
  • The first unwrap in log will succeed because we initialise LOGGER before calling set_logger. The second will succeed because Uart::write_str always returns Ok.