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void SPI1_Send_Byte(unsigned char dat)

{

        SPI_I2S_SendData(SPI1,dat);//写1个字节数据

        while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);//等待数据寄存器空

}

void SPI_I2S_SendData(SPI_TypeDef* SPIx, uint16_t Data)

{

  /* Check the parameters */

  assert_param(IS_SPI_ALL_PERIPH(SPIx));

  

  /* Write in the DR register the data to be sent */

  SPIx->DR = Data;

}

FlagStatus SPI_I2S_GetFlagStatus(SPI_TypeDef* SPIx, uint16_t SPI_I2S_FLAG)

{

  FlagStatus bitstatus = RESET;

  /* Check the parameters */

  assert_param(IS_SPI_ALL_PERIPH(SPIx));

  assert_param(IS_SPI_I2S_GET_FLAG(SPI_I2S_FLAG));

  /* Check the status of the specified SPI/I2S flag */

  if ((SPIx->SR & SPI_I2S_FLAG) != (uint16_t)RESET)

  {

    /* SPI_I2S_FLAG is set */

    bitstatus = SET;

  }

  else

  {

    /* SPI_I2S_FLAG is reset */

    bitstatus = RESET;

  }

  /* Return the SPI_I2S_FLAG status */

  return  bitstatus;

}

uint16_t SPI_I2S_ReceiveData(SPI_TypeDef* SPIx)

{

  /* Check the parameters */

  assert_param(IS_SPI_ALL_PERIPH(SPIx));

  

  /* Return the data in the DR register */

  return SPIx->DR;

}

unsigned char Read_W5500_1Byte(unsigned short reg)

{

        unsigned char i;



        GPIO_ResetBits(W5500_SCS_PORT, W5500_SCS);//置W5500的SCS为低电平

                        

        SPI1_Send_Short(reg);//通过SPI1写16位寄存器地址

        SPI1_Send_Byte(FDM1|RWB_READ|COMMON_R);//通过SPI1写控制字节,1个字节数据长度,读数据,选择通用寄存器



        i=SPI_I2S_ReceiveData(SPI1);

        SPI1_Send_Byte(0x00);//发送一个哑数据

        i=SPI_I2S_ReceiveData(SPI1);//读取1个字节数据



        GPIO_SetBits(W5500_SCS_PORT, W5500_SCS);//置W5500的SCS为高电平

        return i;//返回读取到的寄存器数据

}

HAL_StatusTypeDef HAL_SPI_Transmit(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout);

HAL_StatusTypeDef HAL_SPI_Receive(SPI_HandleTypeDef *hspi, uint8_t *pData, uint16_t Size, uint32_t Timeout);

void SPI1_Send_Byte(unsigned char dat)

{

        unsigned char Data[1];

        Data[0]=dat;

        HAL_SPI_Transmit(&hspi1, Data, 1, 1000);

        

}

unsigned char Read_W5500_1Byte(unsigned short reg)

{

        unsigned char i;

        uint8_t pData[1]={0};



        

        

        HAL_GPIO_WritePin(W5500_SCS_PORT, W5500_SCS,GPIO_PIN_RESET);//置W5500的SCS为低电平

                        

        SPI1_Send_Short(reg);//通过SPI1写16位寄存器地址

        SPI1_Send_Byte(FDM1|RWB_READ|COMMON_R);//通过SPI1写控制字节,1个字节数据长度,读数据,选择通用寄存器





        HAL_SPI_Receive(&hspi1, pData, 1, 1000);

        HAL_SPI_Transmit(&hspi1, 0x00, 1, 1000);

        HAL_SPI_Receive(&hspi1, pData, 1, 1000);

        i=pData[0];

        HAL_GPIO_WritePin(W5500_SCS_PORT, W5500_SCS,GPIO_PIN_SET);

        return i;//返回读取到的寄存器数据

}