Crate xtensa_lx_rt

Minimal startup/runtime for Xtensa LX CPUs.

Minimum Supported Rust Version (MSRV)

This crate is guaranteed to compile on stable Rust 1.65 and up. It might compile with older versions but that may change in any new patch release.

Feature Flags

• float-save-restore — Save and restore float registers for exceptions

Chip Support Feature Flags

• esp32 — Target the ESP32
• esp32s2 — Target the ESP32-S2
• esp32s3 — Target the ESP32-S3

Re-exports

• pub use xtensa_lx;

Modules

• exception
  Exception handling
• interrupt
  Interrupts

Functions

• NMI^⚠
• Profiling^⚠
• Software0^⚠
• Software1^⚠
• Timer0^⚠
• Timer1^⚠
• Timer2^⚠
• init_data^⚠
  Initializes the .data section by copying it from the location indicated by sidata.
• zero_bss^⚠
  Zeroes the .bss section.

Attribute Macros

• entry
  Marks a function as the main function to be called on program start
• exception
  Marks a function as the exception handler
• interrupt
  Marks a function as the interrupt handler, with optional interrupt level indicated
• pre_init
  Marks a function as the pre_init function. This function is called before main and before the memory is initialized.