/**
* @brief Initializes the SPI according to the specified parameters
* in the SPI_InitTypeDef and create the associated handle.
* @param hspi: pointer to a SPI_HandleTypeDef structure that contains
* the configuration information for SPI module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi)
{
/* Check the SPI handle allocation */
if(hspi == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_SPI_ALL_INSTANCE(hspi->Instance));
assert_param(IS_SPI_MODE(hspi->Init.Mode));
assert_param(IS_SPI_DIRECTION_MODE(hspi->Init.Direction));
assert_param(IS_SPI_DATASIZE(hspi->Init.DataSize));
assert_param(IS_SPI_CPOL(hspi->Init.CLKPolarity));
assert_param(IS_SPI_CPHA(hspi->Init.CLKPhase));
assert_param(IS_SPI_NSS(hspi->Init.NSS));
assert_param(IS_SPI_BAUDRATE_PRESCALER(hspi->Init.BaudRatePrescaler));
assert_param(IS_SPI_FIRST_BIT(hspi->Init.FirstBit));
assert_param(IS_SPI_TIMODE(hspi->Init.TIMode));
assert_param(IS_SPI_CRC_CALCULATION(hspi->Init.CRCCalculation));
assert_param(IS_SPI_CRC_POLYNOMIAL(hspi->Init.CRCPolynomial));
if(hspi->State == HAL_SPI_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hspi->Lock = HAL_UNLOCKED;
/* Init the low level hardware : GPIO, CLOCK, NVIC... */
HAL_SPI_MspInit(hspi);
}
hspi->State = HAL_SPI_STATE_BUSY;
/* Disble the selected SPI peripheral */
__HAL_SPI_DISABLE(hspi);
/*----------------------- SPIx CR1 & CR2 Configuration ---------------------*/
/* Configure : SPI Mode, Communication Mode, Data size, Clock polarity and phase, NSS management,
Communication speed, First bit and CRC calculation state */
hspi->Instance->CR1 = (hspi->Init.Mode | hspi->Init.Direction | hspi->Init.DataSize |
hspi->Init.CLKPolarity | hspi->Init.CLKPhase | (hspi->Init.NSS & SPI_CR1_SSM) |
hspi->Init.BaudRatePrescaler | hspi->Init.FirstBit | hspi->Init.CRCCalculation);
/* Configure : NSS management */
hspi->Instance->CR2 = (((hspi->Init.NSS >> 16) & SPI_CR2_SSOE) | hspi->Init.TIMode);
/*---------------------------- SPIx CRCPOLY Configuration ------------------*/
/* Configure : CRC Polynomial */
hspi->Instance->CRCPR = hspi->Init.CRCPolynomial;
#if defined (STM32L100xC) || defined (STM32L151xC) || defined (STM32L152xC) || defined (STM32L162xC) || defined (STM32L151xCA) || defined (STM32L151xD) || defined (STM32L152xCA) || defined (STM32L152xD) || defined (STM32L162xCA) || defined (STM32L162xD) || defined (STM32L151xE) || defined (STM32L151xDX) || defined (STM32L152xE) || defined (STM32L152xDX) || defined (STM32L162xE) || defined (STM32L162xDX)
/* Activate the SPI mode (Make sure that I2SMOD bit in I2SCFGR register is reset) */
CLEAR_BIT(hspi->Instance->I2SCFGR, SPI_I2SCFGR_I2SMOD);
#endif
hspi->ErrorCode = HAL_SPI_ERROR_NONE;
hspi->State = HAL_SPI_STATE_READY;
return HAL_OK;
}
/**
* @brief Initializes the SPI according to the specified parameters
* in the SPI_InitTypeDef and create the associated handle.
* @param hspi: pointer to a SPI_HandleTypeDef structure that contains
* the configuration information for SPI module.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SPI_Init(SPI_HandleTypeDef *hspi)
{
/* Check the SPI handle allocation */
if(hspi == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_SPI_ALL_INSTANCE(hspi->Instance));
assert_param(IS_SPI_MODE(hspi->Init.Mode));
assert_param(IS_SPI_DIRECTION_MODE(hspi->Init.Direction));
assert_param(IS_SPI_DATASIZE(hspi->Init.DataSize));
assert_param(IS_SPI_CPOL(hspi->Init.CLKPolarity));
assert_param(IS_SPI_CPHA(hspi->Init.CLKPhase));
assert_param(IS_SPI_NSS(hspi->Init.NSS));
assert_param(IS_SPI_BAUDRATE_PRESCALER(hspi->Init.BaudRatePrescaler));
assert_param(IS_SPI_FIRST_BIT(hspi->Init.FirstBit));
assert_param(IS_SPI_TIMODE(hspi->Init.TIMode));
assert_param(IS_SPI_CRC_CALCULATION(hspi->Init.CRCCalculation));
assert_param(IS_SPI_CRC_POLYNOMIAL(hspi->Init.CRCPolynomial));
if(hspi->State == HAL_SPI_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK, NVIC... */
HAL_SPI_MspInit(hspi);
}
hspi->State = HAL_SPI_STATE_BUSY;
/* Disble the selected SPI peripheral */
__HAL_SPI_DISABLE(hspi);
/*----------------------- SPIx CR1 & CR2 Configuration ---------------------*/
/* Configure : SPI Mode, Communication Mode, Data size, Clock polarity and phase, NSS management,
Communication speed, First bit and CRC calculation state */
WRITE_REG(hspi->Instance->CR1, (hspi->Init.Mode | hspi->Init.Direction | hspi->Init.DataSize |
hspi->Init.CLKPolarity | hspi->Init.CLKPhase | (hspi->Init.NSS & SPI_CR1_SSM) |
hspi->Init.BaudRatePrescaler | hspi->Init.FirstBit | hspi->Init.CRCCalculation) );
/* Configure : NSS management */
WRITE_REG(hspi->Instance->CR2, (((hspi->Init.NSS >> 16) & SPI_CR2_SSOE) | hspi->Init.TIMode));
/*---------------------------- SPIx CRCPOLY Configuration ------------------*/
/* Configure : CRC Polynomial */
WRITE_REG(hspi->Instance->CRCPR, hspi->Init.CRCPolynomial);
#if defined (STM32F101x6) || defined (STM32F101xB) || defined (STM32F101xE) || defined (STM32F101xG) || defined (STM32F102x6) || defined (STM32F102xB) || defined (STM32F103x6) || defined (STM32F103xB) || defined (STM32F103xE) || defined (STM32F103xG) || defined (STM32F105xC) || defined (STM32F107xC)
/* Activate the SPI mode (Make sure that I2SMOD bit in I2SCFGR register is reset) */
CLEAR_BIT(hspi->Instance->I2SCFGR, SPI_I2SCFGR_I2SMOD);
#endif
#if defined (STM32F101xE) || defined (STM32F103xE)
/* Check RevisionID value for identifying if Device is Rev Z (0x0001) in order to enable workaround for
CRC errors wrongly detected */
/* Pb is that ES_STM32F10xxCDE also identify an issue in Debug registers access while not in Debug mode.
Revision ID information is only available in Debug mode, so Workaround could not be implemented
to distinguish Rev Z devices (issue present) from more recent version (issue fixed).
So, in case of Revison Z F101 or F103 devices, below variable should be assigned to 1 */
uCRCErrorWorkaroundCheck = 0;
#else
uCRCErrorWorkaroundCheck = 0;
#endif
hspi->ErrorCode = HAL_SPI_ERROR_NONE;
hspi->State = HAL_SPI_STATE_READY;
return HAL_OK;
}
