Crate defmt_rtt

defmt global logger over RTT.

NOTE when using this crate it’s not possible to use (link to) the rtt-target crate

To use this crate, link to it by importing it somewhere in your project.

// src/main.rs or src/bin/my-app.rs
use defmt_rtt as _;

Blocking/Non-blocking

probe-run puts RTT into blocking-mode, to avoid losing data.

As an effect this implementation may block forever if probe-run disconnects on runtime. This is because the RTT buffer will fill up and writing will eventually halt the program execution.

defmt::flush would also block forever in that case.