参考代码

components/system/include/drivers/chip/dma.h

@@ -0,0 +1,42 @@
+#ifndef __DMA_H__
+#define __DMA_H__
+
+#include "drivers/chip/_hal.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+typedef enum __packed
+{
+    _DMA_DIR_MEM_TO_MEM,
+    _DMA_DIR_PER_TO_MEM,
+    _DMA_DIR_MEM_TO_PER,
+} dma_dir_t;
+
+typedef void (*dma_isr_cb_fn)(void);
+
+void drv_dma_enable(hal_id_t id);
+void drv_dma_disable(hal_id_t id);
+
+int drv_dma_init(hal_id_t id, unsigned channel, unsigned prio_level);
+int drv_dma_deinit(hal_id_t id, unsigned channel);
+
+int drv_dma_irq_callback_enable(hal_id_t id, unsigned channel, dma_isr_cb_fn cb);
+int drv_dma_irq_callback_disable(hal_id_t id, unsigned channel);
+
+void drv_dma_irq_enable(hal_id_t id, unsigned channel, int priority);
+void drv_dma_irq_disable(hal_id_t id, unsigned channel);
+
+void drv_dma_set(hal_id_t id, unsigned channel, void *dest, unsigned dest_bit_width, bool dest_inc_mode, const void *src, unsigned src_bit_width, bool src_inc_mode, unsigned count, dma_dir_t dir);
+void drv_dma_start(hal_id_t id, unsigned channel);
+void drv_dma_stop(hal_id_t id, unsigned channel);
+
+unsigned drv_dma_get_remain(hal_id_t id, unsigned channel);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif