Macro esp32_hal::dma_buffers

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

Convenience macro to create DMA buffers and descriptors

Usage

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