esp-backtrace - backtrace for ESP32 bare-metal

Supports the ESP32, ESP32-C2/C3/C6, ESP32-H2, ESP32-P4, and ESP32-S2/S3. Optional exception and panic handlers are included, both of which can be enabled via their respective features.

Please note that when targeting a RISC-V device, you need to force frame pointers (i.e. "-C", "force-frame-pointers", in your .cargo/config.toml); this is not required for Xtensa.

You can get an array of backtrace addresses (currently limited to 10) via arch::backtrace() if you want to create a backtrace yourself (i.e. not using the panic or exception handler).

When using the panic and/or exception handler make sure to include use esp_backtrace as _;.

Features

* only used for panic and exception handlers

defmt Feature

Please note that defmt does not provide MSRV guarantees with releases, and as such we are not able to make any MSRV guarantees when this feature is enabled. For more information refer to the MSRV section of defmt's README: https://github.com/knurling-rs/defmt?tab=readme-ov-file#msrv

Minimum Supported Rust Version (MSRV)

This crate is guaranteed to compile when using the latest stable Rust version at the time of the crate's release. It might compile with older versions, but that may change in any new release, including patches.

License

Licensed under either of:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.