dma.c 文件参考

#include "common_def.h"
#include "hal_dma.h"
#include "dma.h"

dma.c 的引用(Include)关系图:

宏定义
#define	DMA_ADDR_ALIGN_MASK_2   1
#define	DMA_ADDR_ALIGN_MASK_4   3
#define	DMA_MEMORY_BURST_TRANS_LENGTH_BYTE   (HAL_DMA_BURST_TRANSACTION_LENGTH_16)
#define	DMA_MEMORY_BURST_TRANS_LENGTH_HARF   (HAL_DMA_BURST_TRANSACTION_LENGTH_8)
#define	DMA_MEMORY_BURST_TRANS_LENGTH_WORD   (HAL_DMA_BURST_TRANSACTION_LENGTH_4)
#define	dma_check_addr_align(addr, align)   (((addr) & (align)) == 0x0)

函数
errcode_t	uapi_dma_init (void)
	初始化DMA模块。
void	uapi_dma_deinit (void)
	去初始化DMA模块。
errcode_t	uapi_dma_open (void)
	开启DMA模块。
void	uapi_dma_close (void)
	关闭DMA模块。
errcode_t	uapi_dma_start_transfer (uint8_t channel)
	启动指定通道的DMA传输。
errcode_t	uapi_dma_end_transfer (uint8_t channel)
	停止指定通道的DMA传输。
uint32_t	uapi_dma_get_block_ts (uint8_t channel)
	获取DMA传输的数据量。
errcode_t	uapi_dma_transfer_memory_single (const dma_ch_user_memory_config_t *user_cfg, dma_transfer_cb_t callback, uintptr_t arg)
	通过DMA通道传输类型为内存到内存的数据。
errcode_t	uapi_dma_configure_peripheral_transfer_single (const dma_ch_user_peripheral_config_t *user_cfg, uint8_t *channel, dma_transfer_cb_t callback, uintptr_t arg)
	通过DMA通道传输类型为内存到外设或外设到内存的数据。
uint8_t	uapi_dma_get_lli_channel (uint8_t burst_length, uint8_t handshaking)
	获取DMA链表传输通道。
errcode_t	uapi_dma_transfer_memory_lli (uint8_t channel, const dma_ch_user_memory_config_t *user_cfg, dma_transfer_cb_t callback)
	通过DMA通道以链表模式传输类型为内存到内存的数据。
errcode_t	uapi_dma_configure_peripheral_transfer_lli (uint8_t channel, const dma_ch_user_peripheral_config_t *user_cfg, dma_transfer_cb_t callback)
	通过DMA通道以链表模式传输类型为内存到外设或外设到内存的数据。
errcode_t	uapi_dma_enable_lli (uint8_t channel, dma_transfer_cb_t callback, uintptr_t arg)
	启用DMA链表传输。

宏定义说明

DMA_ADDR_ALIGN_MASK_2

#define DMA_ADDR_ALIGN_MASK_2   1

Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2022-2022. All rights reserved.

Description: Provides dma driver source
History:
2022-10-16， Create file.

DMA_ADDR_ALIGN_MASK_4

#define DMA_ADDR_ALIGN_MASK_4   3

dma_check_addr_align

#define dma_check_addr_align	(		addr,
			align
	)		(((addr) & (align)) == 0x0)

DMA_MEMORY_BURST_TRANS_LENGTH_BYTE

#define DMA_MEMORY_BURST_TRANS_LENGTH_BYTE   (HAL_DMA_BURST_TRANSACTION_LENGTH_16)

DMA_MEMORY_BURST_TRANS_LENGTH_HARF

#define DMA_MEMORY_BURST_TRANS_LENGTH_HARF   (HAL_DMA_BURST_TRANSACTION_LENGTH_8)

DMA_MEMORY_BURST_TRANS_LENGTH_WORD

#define DMA_MEMORY_BURST_TRANS_LENGTH_WORD   (HAL_DMA_BURST_TRANSACTION_LENGTH_4)