rtt-target
Target side implementation of the RTT (Real-Time Transfer) I/O protocol. RTT implements input and output via a debug probe using in-memory ring buffers and polling. This enables debug logging from the microcontroller with minimal delays and no blocking, making it usable even in real-time applications where e.g. semihosting delays cannot be tolerated.
Platform support
While this crate is platform agnostic, some platform-specific code is needed for locking if you want to use the global rprintln!
macro.
If using Cortex-M, there is built-in support with a feature flag:
# Cargo.toml
= { = "x.y.z", = ["cortex-m"] }
Otherwise, check the documentation for the set_print_channel_cs
function.
Output directly to a channel object with write!
or the binary write
method does not require locking and therefore does not need any platform-specific code.
Usage
With a platform support feature, printing is as simple as:
use ;
Running the examples
To run the examples you will have to provide any needed platform specific configuration such as .cargo/config
or memory.x
yourself. Additionally you must specify a feature to enable the example dependencies, such as --feature examples-cortex-m
.