112 lines
4.3 KiB
C
112 lines
4.3 KiB
C
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#ifndef __SWM341_DMA_H__
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#define __SWM341_DMA_H__
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typedef struct {
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uint8_t Mode; //DMA_MODE_SINGLE、DMA_MODE_CIRCLE
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uint8_t Unit; //DMA_UNIT_BYTE、DMA_UNIT_HALFWORD、DMA_UNIT_WORD
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uint32_t Count; //传输 Unit 个数，最大取值0x100000
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uint32_t SrcAddr;
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uint32_t DstAddr;
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uint8_t SrcAddrInc; //0 地址固定 1 地址递增
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uint8_t DstAddrInc;
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uint8_t Handshake; //传输握手信号：DMA_HS_NO、DMA_CH0_UART0TX、DMA_CH0_SPI0TX、... ...
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uint8_t Priority; //DMA_PRI_LOW、DMA_PRI_HIGH
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uint8_t DoneIE; //传输完成中断使能
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} DMA_InitStructure;
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#define DMA_CH0 0
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#define DMA_CH1 1
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#define DMA_CH2 2
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#define DMA_CH3 3
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#define DMA_MODE_SINGLE 0 // 单次模式，传输完成后停止
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#define DMA_MODE_CIRCLE 1 // 环形模式，传输完成后从头执行下一轮传输
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#define DMA_UNIT_BYTE 0
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#define DMA_UNIT_HALFWORD 1
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#define DMA_UNIT_WORD 2
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#define DMA_PRI_LOW 0
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#define DMA_PRI_HIGH 1
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#define DMA_HS_NO (0 << 4) // 无握手（Handshake）信号，启动传输后全部传完
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#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
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#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
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#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
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#define DMA_HS_MSK (7 << 4)
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#define DMA_DIR_RX (0 << 7) // SRC --> DST
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#define DMA_DIR_TX (1 << 7) // DST --> SRC
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#define DMA_DIR_MSK (1 << 7)
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// 源侧外设
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#define DMA_CH0_UART1RX (0 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH0_SPI1RX (1 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH0_UART2RX (2 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH0_ADC0 (3 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH1_UART0RX (0 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH1_SPI0RX (1 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH1_UART3RX (2 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH2_UART3RX (0 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH2_SPI0RX (1 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH2_UART0RX (2 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH3_UART2RX (0 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH3_SPI1RX (1 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH3_UART1RX (2 | DMA_HS_SRC | DMA_DIR_RX)
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#define DMA_CH3_ADC1 (3 | DMA_HS_SRC | DMA_DIR_RX)
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// 目标侧外设
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#define DMA_CH0_UART0TX (0 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH0_SPI0TX (1 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH0_UART3TX (2 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH1_UART1TX (0 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH1_SPI1TX (1 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH1_UART2TX (2 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH2_UART2TX (0 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH2_SPI1TX (1 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH2_UART1TX (2 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH3_UART3TX (0 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH3_SPI0TX (1 | DMA_HS_DST | DMA_DIR_RX)
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#define DMA_CH3_UART0TX (2 | DMA_HS_DST | DMA_DIR_RX)
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// 外部握手信号
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#define DMA_EXHS_TIMR0 (0 | DMA_HS_EXT | DMA_DIR_RX)
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#define DMA_EXHS_TIMR1 (1 | DMA_HS_EXT | DMA_DIR_RX)
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#define DMA_EXHS_TIMR2 (2 | DMA_HS_EXT | DMA_DIR_RX)
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#define DMA_EXHS_TIMR3 (3 | DMA_HS_EXT | DMA_DIR_RX)
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#define DMA_EXHS_TIMR4 (4 | DMA_HS_EXT | DMA_DIR_RX)
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#define DMA_EXHS_TRIG0 (5 | DMA_HS_EXT | DMA_DIR_RX) // DMA_TRIG0引脚
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#define DMA_EXHS_TRIG1 (6 | DMA_HS_EXT | DMA_DIR_RX) // DMA_TRIG1引脚
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void DMA_CH_Init(uint32_t chn, DMA_InitStructure * initStruct); //DMA通道配置
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void DMA_CH_Open(uint32_t chn);
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void DMA_CH_Close(uint32_t chn);
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void DMA_CH_INTEn(uint32_t chn); //DMA中断使能，数据搬运完成后触发中断
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void DMA_CH_INTDis(uint32_t chn); //DMA中断禁止，数据搬运完成后不触发中断
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void DMA_CH_INTClr(uint32_t chn); //DMA中断标志清除
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uint32_t DMA_CH_INTStat(uint32_t chn); //DMA中断状态查询，1 数据搬运完成 0 数据搬运未完成
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#endif //__SWM341_DMA_H__
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