Macro esp_hal::dma_circular_buffers

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

Convenience macro to create circular DMA buffers and descriptors.

Usage

use esp_hal::dma_circular_buffers;

// RX and TX buffers are 32000 bytes - passing only one parameter makes RX
// and TX the same size.
let (rx_buffer, rx_descriptors, tx_buffer, tx_descriptors) =
    dma_circular_buffers!(32000, 32000);