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spi_common_dma_t_SPI_DMA_CH_AUTO

esp_idf_sys

Constant spi_common_dma_t_SPI_DMA_CH_AUTO 

Source 
pub const spi_common_dma_t_SPI_DMA_CH_AUTO: spi_common_dma_t = 3;
Expand description

< Enable DMA, channel is automatically selected by driver