原创 汉化STM32F2.02版固件库之十七(SPI)

/*******************************************************************************
* 函数名称: SPI_I2S_DeInit
* 功能描述: 将SPIx外设寄存器重置为他们的缺省值(Affects also the I2Ss).
* 输入参数: SPIx x为1，2或3用于选定SPI外设。
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/
void SPI_I2S_DeInit(SPI_TypeDef* SPIx)
{
  /* Check the parameters [检查参数]*/
  assert_param(IS_SPI_ALL_PERIPH(SPIx));
 
  switch (*(u32*)&SPIx)
  {
    case SPI1_BASE:
      /* Enable SPI1 reset state [使能SPI1复位状态]*/
      RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, ENABLE);
      /* Release SPI1 from reset state [解除SPI1复位状态]*/
      RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, DISABLE);
      break;

    case SPI2_BASE:
      /* Enable SPI2 reset state [使能SPI2复位状态]*/
      RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI2, ENABLE);
      /* Release SPI2 from reset state [解除SPI2复位状态]*/
      RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI2, DISABLE);
      break;

    case SPI3_BASE:
      /* Enable SPI3 reset state [使能SPI3复位状态]*/
      RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI3, ENABLE);
      /* Release SPI3 from reset state [解除SPI3复位状态]*/
      RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI3, DISABLE);
      break;

    default:
      break;
  }
}

/*******************************************************************************
* 函数名称: SPI_Init
* 功能描述: 根据SPI_InitStruct.中的特定参数初始化SPIx外设.
* 输入参数: (1)SPIx ：x为1，2或3用于选定SPI外设。
*           (2)SPI_InitStruct：指向一个包含特定SPI外设配置信息的SPI_InitTypeDef结构体的指针。
* 输出参数: 无
* 返回参数: 无
******************************************************************************/
void SPI_Init(SPI_TypeDef* SPIx, SPI_InitTypeDef* SPI_InitStruct)
{
  u16 tmpreg = 0;
 
  /* Check the parameters [检查参数]*/
  assert_param(IS_SPI_ALL_PERIPH(SPIx));  
 
  /* Check the SPI parameters [检查SPI的参数]*/
  assert_param(IS_SPI_DIRECTION_MODE(SPI_InitStruct->SPI_Direction));
  assert_param(IS_SPI_MODE(SPI_InitStruct->SPI_Mode));
  assert_param(IS_SPI_DATASIZE(SPI_InitStruct->SPI_DataSize));
  assert_param(IS_SPI_CPOL(SPI_InitStruct->SPI_CPOL));
  assert_param(IS_SPI_CPHA(SPI_InitStruct->SPI_CPHA));
  assert_param(IS_SPI_NSS(SPI_InitStruct->SPI_NSS));
  assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_InitStruct->SPI_BaudRatePrescaler));
  assert_param(IS_SPI_FIRST_BIT(SPI_InitStruct->SPI_FirstBit));
  assert_param(IS_SPI_CRC_POLYNOMIAL(SPI_InitStruct->SPI_CRCPolynomial));

/*---------------------------- SPIx CR1 Configuration [SPIx CR1配置]*/
  /* Get the SPIx CR1 value [取得SPIx CR1的值]*/
  tmpreg = SPIx->CR1;
  /* Clear BIDIMode, BIDIOE, RxONLY, SSM, SSI, LSBFirst, BR, MSTR, CPOL and CPHA bits
  清BIDIMode, BIDIOE, RxONLY, SSM, SSI, LSBFirst, BR, MSTR, CPOL 和CPHA 位*/
  tmpreg &= CR1_CLEAR_Mask;
  /* Configure SPIx[配置SPIx]: direction[方向], NSS management[NSS管理], first transmitted bit[第一个发送位], BaudRate prescaler[波特率预分频]
     master/salve mode[主/从模式], CPOL and CPHA */
  /* Set BIDImode, BIDIOE and RxONLY bits according to SPI_Direction value [依照SPI_Direction的值置位BIDImode, BIDIOE和RxONLY]*/
  /* Set SSM, SSI and MSTR bits according to SPI_Mode and SPI_NSS values [依照SPI_Mode 和SPI_NSS的值置位SSM, SSI 和 MSTR]*/
  /* Set LSBFirst bit according to SPI_FirstBit value [依照SPI_FirstBit的值置位LSBFirst]*/
  /* Set BR bits according to SPI_BaudRatePrescaler value [依照SPI_BaudRatePrescaler的值置位BR]*/
  /* Set CPOL bit according to SPI_CPOL value [依照SPI_CPOL的值置位CPOL]*/
  /* Set CPHA bit according to SPI_CPHA value [依照SPI_CPHA的值置位CPHA]*/
  tmpreg |= (u16)((u32)SPI_InitStruct->SPI_Direction | SPI_InitStruct->SPI_Mode |
                  SPI_InitStruct->SPI_DataSize | SPI_InitStruct->SPI_CPOL | 
                  SPI_InitStruct->SPI_CPHA | SPI_InitStruct->SPI_NSS | 
                  SPI_InitStruct->SPI_BaudRatePrescaler | SPI_InitStruct->SPI_FirstBit);
  /* Write to SPIx CR1 [写SPIx CR1]*/
  SPIx->CR1 = tmpreg;
 
  /* Activate the SPI mode (Reset I2SMOD bit in I2SCFGR register) */
  SPIx->I2SCFGR &= SPI_Mode_Select;    

/*---------------------------- SPIx CRCPOLY Configuration --------------------*/
  /* Write to SPIx CRCPOLY [写SPIx CRCPOLY]*/
  SPIx->CRCPR = SPI_InitStruct->SPI_CRCPolynomial;
}

完整的stm32f10x_spi.c请您在下载的同时到左上角顶我一下,以示支持!谢谢