ESP-IDF
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Outline
#include "stdbool.h"
#include "hal/spi_types.h"
spi_dma_chan_dir_t
spi_dma_chan_handle_t
spi_dma_enable_burst(spi_dma_chan_handle_t, bool, bool);
spi_dma_append(spi_dma_chan_handle_t);
spi_dma_reset(spi_dma_chan_handle_t);
spi_dma_start(spi_dma_chan_handle_t, void *);
spi_dma_get_eof_desc(spi_dma_chan_handle_t);
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_driver_spi/include/esp_private/spi_dma.h
 
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/* * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #include "stdbool.h" #include "hal/spi_types.h" #ifdef __cplusplus extern "C" { #endif #if !SOC_GDMA_SUPPORTED /** * @brief Enumeration of SPI_DMA channel direction *//* ... */ typedef enum { DMA_CHANNEL_DIRECTION_TX, /*!< DMA channel direction: TX */ DMA_CHANNEL_DIRECTION_RX, /*!< DMA channel direction: RX */ }{ ... } spi_dma_chan_dir_t; typedef struct { spi_host_device_t host_id; spi_dma_chan_dir_t dir; int chan_id; }{ ... } spi_dma_chan_handle_t; /** * Enable/Disable data/desc burst for spi_dma channel * * @param chan_handle Context of the spi_dma channel. * @param data_burst enable or disable data burst * @param desc_burst enable or disable desc burst *//* ... */ void spi_dma_enable_burst(spi_dma_chan_handle_t chan_handle, bool data_burst, bool desc_burst); /** * Re-trigger a HW pre-load to pick up appended linked descriptor * * @param chan_handle Context of the spi_dma channel. *//* ... */ void spi_dma_append(spi_dma_chan_handle_t chan_handle); /** * Reset dma channel for spi_dma * * @param chan_handle Context of the spi_dma channel. *//* ... */ void spi_dma_reset(spi_dma_chan_handle_t chan_handle); /** * Start dma channel for spi_dma * * @param chan_handle Context of the spi_dma channel. * @param addr Addr of linked dma descriptor to mount *//* ... */ void spi_dma_start(spi_dma_chan_handle_t chan_handle, void *addr); /** * Get EOF descriptor for a dma channel * * @param chan_handle Context of the spi_dma channel. *//* ... */ uint32_t spi_dma_get_eof_desc(spi_dma_chan_handle_t chan_handle); /* ... */ #endif //!SOC_GDMA_SUPPORTED #ifdef __cplusplus }{...} #endif
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