Module radio 

Wi-Fi and Bluetooth LE through Espressif’s esp-radio.

The radio’s MAC/PHY firmware is only available from Espressif as binary libraries, which esp-radio wraps. This board crate’s job is ownership and memory: with the radio feature, crate::init gives the global heap the ~72 KB of RAM the second-stage bootloader used, which is free once the app runs. The radio’s buffers therefore don’t compete with the framebuffer or audio streams.

Enable wifi and/or ble on this crate for the helpers in crate::net and crate::ble, or use esp_radio directly (re-exported here). Running both at once (coexistence) needs more heap than the reclaimed region provides; add a second region with [esp_alloc::heap_allocator!] in the app.

Re-exports

pub use esp_alloc;

pub use esp_radio;

Structs

RadioResources

The radio peripherals.

Constants

RECLAIMED_HEAP_BYTES

Bytes of reclaimed bootloader RAM handed to the heap (the value esp-generate uses for the ESP32-S3).

Functions

heap_usage

Heap usage in bytes: (used, free). Available with the radio feature.