Macro dma_descriptors_chunk_size

macro_rules! dma_descriptors_chunk_size {
    ($rx_size:expr, $tx_size:expr, $chunk_size:expr) => { ... };
    ($size:expr, $chunk_size:expr) => { ... };
}

Available on crate feature unstable only.

Convenience macro to create DMA descriptors with specific chunk size

Usage

use esp_hal::dma_descriptors_chunk_size;

// Create RX and TX descriptors for transactions up to 32000 bytes - passing
// only one parameter assumes RX and TX are the same size.
let (rx_descriptors, tx_descriptors) =
    dma_descriptors_chunk_size!(32000, 32000, 4032);