Crate defmt_ringbuf

defmt global logger into a persistent ring buffer. 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_ringbuf as _;

Call init to initialize logging and read to read buffered log data.

Critical section implementation

This crate uses critical-section to ensure only one thread is writing to the buffer at a time. You must import a crate that provides a critical-section implementation suitable for the current target. See the critical-section README for details.

For example, for single-core privileged-mode Cortex-M targets, you can add the following to your Cargo.toml.

[dependencies]
cortex-m = { version = "0.7.6", features = ["critical-section-single-core"]}

Structs

• RingBuffer
  Ring buffer.

Traits

• RingBuf
  Ring buffer access methods.

Functions

• init^⚠
  Initializes logging to a ring buffer.
• read
  Reads and removes data from the log buffer.