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- #ifndef __SWM320_SPI_H__
- #define __SWM320_SPI_H__
- typedef struct {
- uint8_t FrameFormat; //帧格式：SPI_FORMAT_SPI、SPI_FORMAT_TI_SSI
- uint8_t SampleEdge; //在SPI帧格式下，选择数据采样边沿：SPI_FIRST_EDGE、SPI_SECOND_EDGE
- uint8_t IdleLevel; //在SPI帧格式下，选择空闲时（无数据传输时）时钟线的电平：SPI_LOW_LEVEL、SPI_HIGH_LEVEL
- uint8_t WordSize; //字长度, 有效值4-16
- uint8_t Master; //1 主机模式 0 从机模式
- uint8_t clkDiv; //SPI_CLK = SYS_CLK / clkDiv，有效值：SPI_CLKDIV_4、SPI_CLKDIV_8、... ... 、SPI_CLKDIV_512
- uint8_t RXHFullIEn; //接收FIFO半满中断使能
- uint8_t TXEmptyIEn; //发送FIFO 空中断使能
- uint8_t TXCompleteIEn; //发送FIFO 空且发送移位寄存器空中断使能
- } SPI_InitStructure;
- #define SPI_FORMAT_SPI 0 //Motorola SPI 格式
- #define SPI_FORMAT_TI_SSI 1 //TI SSI 格式
- #define SPI_FIRST_EDGE 0 //第一个时钟沿开始采样
- #define SPI_SECOND_EDGE 1 //第二个时钟沿开始采样
- #define SPI_LOW_LEVEL 0 //空闲时时钟线保持低电平
- #define SPI_HIGH_LEVEL 1 //空闲时时钟线保持高电平
- #define SPI_CLKDIV_4 0
- #define SPI_CLKDIV_8 1
- #define SPI_CLKDIV_16 2
- #define SPI_CLKDIV_32 3
- #define SPI_CLKDIV_64 4
- #define SPI_CLKDIV_128 5
- #define SPI_CLKDIV_256 6
- #define SPI_CLKDIV_512 7
- /* Interrupt Type */
- #define SPI_IT_RX_OVF (1 << 0) //RX FIFO Overflow
- #define SPI_IT_RX_FULL (1 << 1) //RX FIFO Full
- #define SPI_IT_RX_HFULL (1 << 2) //RX FIFO Half Full
- #define SPI_IT_TX_EMPTY (1 << 3) //TX FIFO Empty
- #define SPI_IT_TX_HFULL (1 << 4) //TX FIFO Half Full
- #define SPI_IT_TX_DONE (1 << 9) //TX Done（发送FIFO空且发送移位寄存器空）
- void SPI_Init(SPI_TypeDef * SPIx, SPI_InitStructure * initStruct); //SPI初始化
- void SPI_Open(SPI_TypeDef * SPIx); //SPI打开，允许收发
- void SPI_Close(SPI_TypeDef * SPIx); //SPI关闭，禁止收发
- uint32_t SPI_Read(SPI_TypeDef * SPIx);
- void SPI_Write(SPI_TypeDef * SPIx, uint32_t data);
- void SPI_WriteWithWait(SPI_TypeDef * SPIx, uint32_t data);
- uint32_t SPI_ReadWrite(SPI_TypeDef * SPIx, uint32_t data);
- uint32_t SPI_IsRXEmpty(SPI_TypeDef * SPIx); //接收FIFO是否空，如果不空则可以继续SPI_Read()
- uint32_t SPI_IsTXFull(SPI_TypeDef * SPIx); //发送FIFO是否满，如果不满则可以继续SPI_Write()
- uint32_t SPI_IsTXEmpty(SPI_TypeDef * SPIx); //发送FIFO是否空
- void SPI_INTEn(SPI_TypeDef * SPIx, uint32_t it); //中断使能
- void SPI_INTDis(SPI_TypeDef * SPIx, uint32_t it); //中断禁止
- void SPI_INTClr(SPI_TypeDef * SPIx, uint32_t it); //中断标志清除
- uint32_t SPI_INTStat(SPI_TypeDef * SPIx, uint32_t it); //中断状态查询
- #endif //__SWM320_SPI_H__
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