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#ifndef __SWM341_DMA_H__
#define __SWM341_DMA_H__
typedef struct {
uint8_t Mode; //DMA_MODE_SINGLE、DMA_MODE_CIRCLE
uint8_t Unit; //DMA_UNIT_BYTE、DMA_UNIT_HALFWORD、DMA_UNIT_WORD
uint32_t Count; //传输 Unit 个数，最大取值0x100000
uint32_t SrcAddr;
uint32_t DstAddr;
uint8_t SrcAddrInc; //0 地址固定 1 地址递增
uint8_t DstAddrInc;
uint8_t Handshake; //传输握手信号：DMA_HS_NO、DMA_CH0_UART0TX、DMA_CH0_SPI0TX、... ...
uint8_t Priority; //DMA_PRI_LOW、DMA_PRI_HIGH
uint32_t INTEn; //中断使能，有效值有 DMA_IT_DONE、DMA_IT_DSTSG_HALF、DMA_IT_DSTSG_DONE、DMA_IT_SRCSG_HALF、DMA_IT_SRCSG_DONE 及其“或”
} DMA_InitStructure;
#define DMA_CH0 0
#define DMA_CH1 1
#define DMA_CH2 2
#define DMA_CH3 3
#define DMA_MODE_SINGLE 0 // 单次模式，传输完成后停止
#define DMA_MODE_CIRCLE 1 // 环形模式，传输完成后从头执行下一轮传输
#define DMA_UNIT_BYTE 0
#define DMA_UNIT_HALFWORD 1
#define DMA_UNIT_WORD 2
#define DMA_PRI_LOW 0
#define DMA_PRI_HIGH 1
#define DMA_HS_NO (0 << 4) // 无握手（Handshake）信号，启动传输后全部传完
#define DMA_HS_SRC (1 << 4) // 源 侧握手信号，启动传输后源 侧生成一个数据，DMA搬运一个Unit
#define DMA_HS_DST (2 << 4) // 目标侧握手信号，启动传输后目标侧索取一个数据，DMA搬运一个Unit
#define DMA_HS_EXT (4 << 4) // 外部 握手信号，启动传输后外部握手来一个脉冲，DMA搬运一个Unit
#define DMA_HS_MSK (7 << 4)
#define DMA_DIR_RX (0 << 7) // SRC --> DST
#define DMA_DIR_TX (1 << 7) // DST --> SRC
#define DMA_DIR_MSK (1 << 7)
// 源侧外设
#define DMA_CH0_UART1RX (0 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH0_SPI1RX (1 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH0_UART2RX (2 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH0_ADC0 (3 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH1_UART0RX (0 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH1_SPI0RX (1 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH1_UART3RX (2 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH2_UART3RX (0 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH2_SPI0RX (1 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH2_UART0RX (2 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH3_UART2RX (0 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH3_SPI1RX (1 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH3_UART1RX (2 | DMA_HS_SRC | DMA_DIR_RX)
#define DMA_CH3_ADC1 (3 | DMA_HS_SRC | DMA_DIR_RX)
// 目标侧外设
#define DMA_CH0_UART0TX (0 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH0_SPI0TX (1 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH0_UART3TX (2 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH1_UART1TX (0 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH1_SPI1TX (1 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH1_UART2TX (2 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH2_UART2TX (0 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH2_SPI1TX (1 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH2_UART1TX (2 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH3_UART3TX (0 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH3_SPI0TX (1 | DMA_HS_DST | DMA_DIR_RX)
#define DMA_CH3_UART0TX (2 | DMA_HS_DST | DMA_DIR_RX)
// 外部握手信号
#define DMA_EXHS_TIMR0 (0 | DMA_HS_EXT | DMA_DIR_RX)
#define DMA_EXHS_TIMR1 (1 | DMA_HS_EXT | DMA_DIR_RX)
#define DMA_EXHS_TIMR2 (2 | DMA_HS_EXT | DMA_DIR_RX)
#define DMA_EXHS_TIMR3 (3 | DMA_HS_EXT | DMA_DIR_RX)
#define DMA_EXHS_TIMR4 (4 | DMA_HS_EXT | DMA_DIR_RX)
#define DMA_EXHS_TRIG0 (5 | DMA_HS_EXT | DMA_DIR_RX) // DMA_TRIG0引脚
#define DMA_EXHS_TRIG1 (6 | DMA_HS_EXT | DMA_DIR_RX) // DMA_TRIG1引脚
/* Interrupt Type */
#define DMA_IT_DONE (1 << 0) //Transfer Done
#define DMA_IT_DSTSG_HALF (1 << 8) //Destination Scatter-Gather Transfer Half
#define DMA_IT_DSTSG_DONE (1 << 9) //Destination Scatter-Gather Transfer Done
#define DMA_IT_SRCSG_HALF (1 << 16) //Source Scatter-Gather Transfer Half
#define DMA_IT_SRCSG_DONE (1 << 17) //Source Scatter-Gather Transfer Done
void DMA_CH_Init(uint32_t chn, DMA_InitStructure * initStruct); //DMA通道配置
void DMA_CH_Open(uint32_t chn);
void DMA_CH_Close(uint32_t chn);
void DMA_CH_SetCount(uint32_t chn, uint32_t count);
void DMA_CH_SetSrcAddress(uint32_t chn, uint32_t address);
void DMA_CH_SetDstAddress(uint32_t chn, uint32_t address);
uint32_t DMA_CH_GetRemaining(uint32_t chn);
void DMA_CH_INTEn(uint32_t chn, uint32_t it); //DMA中断使能
void DMA_CH_INTDis(uint32_t chn, uint32_t it); //DMA中断禁止
void DMA_CH_INTClr(uint32_t chn, uint32_t it); //DMA中断标志清除
uint32_t DMA_CH_INTStat(uint32_t chn, uint32_t it); //DMA中断状态查询
#endif //__SWM341_DMA_H__
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