diff --git a/Demo/Common/drivers/ST/STM32F10xFWLib/src/stm32f10x_spi.c b/Demo/Common/drivers/ST/STM32F10xFWLib/src/stm32f10x_spi.c index ae507dccd..8aadc0931 100644 --- a/Demo/Common/drivers/ST/STM32F10xFWLib/src/stm32f10x_spi.c +++ b/Demo/Common/drivers/ST/STM32F10xFWLib/src/stm32f10x_spi.c @@ -1,62 +1,120 @@ -/******************** (C) COPYRIGHT 2007 STMicroelectronics ******************** -* File Name : stm32f10x_spi.c -* Author : MCD Application Team -* Date First Issued : 09/29/2006 -* Description : This file provides all the SPI firmware functions. -******************************************************************************** -* History: -* 04/02/2007: V0.2 -* 02/05/2007: V0.1 -* 09/29/2006: V0.01 -******************************************************************************** -* THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS -* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. -* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, -* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE -* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING -* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. -*******************************************************************************/ +/** + ****************************************************************************** + * @file stm32f10x_spi.c + * @author MCD Application Team + * @version V3.0.0 + * @date 04/06/2009 + * @brief This file provides all the SPI firmware functions. + ****************************************************************************** + * @copy + * + * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS + * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE + * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY + * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING + * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE + * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. + * + *

© COPYRIGHT 2009 STMicroelectronics

+ */ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_spi.h" #include "stm32f10x_rcc.h" -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ +/** @addtogroup StdPeriph_Driver + * @{ + */ + +/** @defgroup SPI + * @brief SPI driver modules + * @{ + */ + +/** @defgroup SPI_Private_TypesDefinitions + * @{ + */ + +/** + * @} + */ + + +/** @defgroup SPI_Private_Defines + * @{ + */ + /* SPI SPE mask */ -#define CR1_SPE_Set ((u16)0x0040) -#define CR1_SPE_Reset ((u16)0xFFBF) +#define CR1_SPE_Set ((uint16_t)0x0040) +#define CR1_SPE_Reset ((uint16_t)0xFFBF) + +/* I2S I2SE mask */ +#define I2SCFGR_I2SE_Set ((uint16_t)0x0400) +#define I2SCFGR_I2SE_Reset ((uint16_t)0xFBFF) /* SPI CRCNext mask */ -#define CR1_CRCNext_Set ((u16)0x1000) +#define CR1_CRCNext_Set ((uint16_t)0x1000) /* SPI CRCEN mask */ -#define CR1_CRCEN_Set ((u16)0x2000) -#define CR1_CRCEN_Reset ((u16)0xDFFF) +#define CR1_CRCEN_Set ((uint16_t)0x2000) +#define CR1_CRCEN_Reset ((uint16_t)0xDFFF) /* SPI SSOE mask */ -#define CR2_SSOE_Set ((u16)0x0004) -#define CR2_SSOE_Reset ((u16)0xFFFB) +#define CR2_SSOE_Set ((uint16_t)0x0004) +#define CR2_SSOE_Reset ((uint16_t)0xFFFB) /* SPI registers Masks */ -#define CR1_CLEAR_Mask ((u16)0x3040) - -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -/* Private functions ---------------------------------------------------------*/ - -/******************************************************************************* -* Function Name : SPI_DeInit -* Description : Deinitializes the SPIx peripheral registers to their default -* reset values. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* Output : None -* Return : None -*******************************************************************************/ -void SPI_DeInit(SPI_TypeDef* SPIx) +#define CR1_CLEAR_Mask ((uint16_t)0x3040) +#define I2SCFGR_CLEAR_Mask ((uint16_t)0xF040) + +/* SPI or I2S mode selection masks */ +#define SPI_Mode_Select ((uint16_t)0xF7FF) +#define I2S_Mode_Select ((uint16_t)0x0800) + +/** + * @} + */ + +/** @defgroup SPI_Private_Macros + * @{ + */ + +/** + * @} + */ + +/** @defgroup SPI_Private_Variables + * @{ + */ + +/** + * @} + */ + +/** @defgroup SPI_Private_FunctionPrototypes + * @{ + */ + +/** + * @} + */ + +/** @defgroup SPI_Private_Functions + * @{ + */ + +/** + * @brief Deinitializes the SPIx peripheral registers to their default + * reset values (Affects also the I2Ss). + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @retval : None + */ +void SPI_I2S_DeInit(SPI_TypeDef* SPIx) { - switch (*(u32*)&SPIx) + /* Check the parameters */ + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + + switch (*(uint32_t*)&SPIx) { case SPI1_BASE: /* Enable SPI1 reset state */ @@ -64,45 +122,49 @@ void SPI_DeInit(SPI_TypeDef* SPIx) /* Release SPI1 from reset state */ RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, DISABLE); break; - case SPI2_BASE: /* Enable SPI2 reset state */ RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI2, ENABLE); /* Release SPI2 from reset state */ RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI2, DISABLE); break; - + case SPI3_BASE: + /* Enable SPI3 reset state */ + RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI3, ENABLE); + /* Release SPI3 from reset state */ + RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI3, DISABLE); + break; default: break; } } -/******************************************************************************* -* Function Name : SPI_Init -* Description : Initializes the SPIx according to the specified parameters -* in the SPI_InitStruct. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_InitStruct: pointer to a SPI_InitTypeDef structure that -* contains the configuration information for the specified -* SPI peripheral. -* Output : None -* Return : None -******************************************************************************/ +/** + * @brief Initializes the SPIx peripheral according to the specified + * parameters in the SPI_InitStruct. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param SPI_InitStruct: pointer to a SPI_InitTypeDef structure that + * contains the configuration information for the specified + * SPI peripheral. + * @retval : None + */ void SPI_Init(SPI_TypeDef* SPIx, SPI_InitTypeDef* SPI_InitStruct) { - u16 tmpreg = 0; - - /* Check the parameters */ - assert(IS_SPI_DIRECTION_MODE(SPI_InitStruct->SPI_Direction)); - assert(IS_SPI_MODE(SPI_InitStruct->SPI_Mode)); - assert(IS_SPI_DATASIZE(SPI_InitStruct->SPI_DataSize)); - assert(IS_SPI_CPOL(SPI_InitStruct->SPI_CPOL)); - assert(IS_SPI_CPHA(SPI_InitStruct->SPI_CPHA)); - assert(IS_SPI_NSS(SPI_InitStruct->SPI_NSS)); - assert(IS_SPI_BAUDRATE_PRESCALER(SPI_InitStruct->SPI_BaudRatePrescaler)); - assert(IS_SPI_FIRST_BIT(SPI_InitStruct->SPI_FirstBit)); - assert(IS_SPI_CRC_POLYNOMIAL(SPI_InitStruct->SPI_CRCPolynomial)); - + uint16_t tmpreg = 0; + + /* check the parameters */ + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + + /* Check the SPI parameters */ + 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 ------------------------*/ /* Get the SPIx CR1 value */ tmpreg = SPIx->CR1; @@ -116,71 +178,188 @@ void SPI_Init(SPI_TypeDef* SPIx, SPI_InitTypeDef* SPI_InitStruct) /* Set BR bits according to SPI_BaudRatePrescaler value */ /* Set CPOL bit according to SPI_CPOL value */ /* Set CPHA bit according to SPI_CPHA value */ - tmpreg |= (u16)((u32)SPI_InitStruct->SPI_Direction | SPI_InitStruct->SPI_Mode | + tmpreg |= (uint16_t)((uint32_t)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 */ 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 */ SPIx->CRCPR = SPI_InitStruct->SPI_CRCPolynomial; } -/******************************************************************************* -* Function Name : SPI_StructInit -* Description : Fills each SPI_InitStruct member with its default value. -* Input : - SPI_InitStruct : pointer to a SPI_InitTypeDef structure -* which will be initialized. -* Output : None -* Return : None -*******************************************************************************/ +/** + * @brief Initializes the SPIx peripheral according to the specified + * parameters in the I2S_InitStruct. + * @param SPIx: where x can be 2 or 3 to select the SPI peripheral + * (configured in I2S mode). + * @param I2S_InitStruct: pointer to an I2S_InitTypeDef structure that + * contains the configuration information for the specified + * SPI peripheral configured in I2S mode. + * @retval : None + */ +void I2S_Init(SPI_TypeDef* SPIx, I2S_InitTypeDef* I2S_InitStruct) +{ + uint16_t tmpreg = 0, i2sdiv = 2, i2sodd = 0, packetlength = 1; + uint32_t tmp = 0; + RCC_ClocksTypeDef RCC_Clocks; + + /* Check the I2S parameters */ + assert_param(IS_SPI_23_PERIPH(SPIx)); + assert_param(IS_I2S_MODE(I2S_InitStruct->I2S_Mode)); + assert_param(IS_I2S_STANDARD(I2S_InitStruct->I2S_Standard)); + assert_param(IS_I2S_DATA_FORMAT(I2S_InitStruct->I2S_DataFormat)); + assert_param(IS_I2S_MCLK_OUTPUT(I2S_InitStruct->I2S_MCLKOutput)); + assert_param(IS_I2S_AUDIO_FREQ(I2S_InitStruct->I2S_AudioFreq)); + assert_param(IS_I2S_CPOL(I2S_InitStruct->I2S_CPOL)); +/*----------------------- SPIx I2SCFGR & I2SPR Configuration -----------------*/ + /* Clear I2SMOD, I2SE, I2SCFG, PCMSYNC, I2SSTD, CKPOL, DATLEN and CHLEN bits */ + SPIx->I2SCFGR &= I2SCFGR_CLEAR_Mask; + SPIx->I2SPR = 0x0002; + + /* Get the I2SCFGR register value */ + tmpreg = SPIx->I2SCFGR; + + /* If the default value has to be written, reinitialize i2sdiv and i2sodd*/ + if(I2S_InitStruct->I2S_AudioFreq == I2S_AudioFreq_Default) + { + i2sodd = (uint16_t)0; + i2sdiv = (uint16_t)2; + } + /* If the requested audio frequency is not the default, compute the prescaler */ + else + { + /* Check the frame length (For the Prescaler computing) */ + if(I2S_InitStruct->I2S_DataFormat == I2S_DataFormat_16b) + { + /* Packet length is 16 bits */ + packetlength = 1; + } + else + { + /* Packet length is 32 bits */ + packetlength = 2; + } + /* Get System Clock frequency */ + RCC_GetClocksFreq(&RCC_Clocks); + + /* Compute the Real divider depending on the MCLK output state with a flaoting point */ + if(I2S_InitStruct->I2S_MCLKOutput == I2S_MCLKOutput_Enable) + { + /* MCLK output is enabled */ + tmp = (uint16_t)(((10 * RCC_Clocks.SYSCLK_Frequency) / (256 * I2S_InitStruct->I2S_AudioFreq)) + 5); + } + else + { + /* MCLK output is disabled */ + tmp = (uint16_t)(((10 * RCC_Clocks.SYSCLK_Frequency) / (32 * packetlength * I2S_InitStruct->I2S_AudioFreq)) + 5); + } + + /* Remove the flaoting point */ + tmp = tmp/10; + + /* Check the parity of the divider */ + i2sodd = (uint16_t)(tmp & (uint16_t)0x0001); + + /* Compute the i2sdiv prescaler */ + i2sdiv = (uint16_t)((tmp - i2sodd) / 2); + + /* Get the Mask for the Odd bit (SPI_I2SPR[8]) register */ + i2sodd = (uint16_t) (i2sodd << 8); + } + + /* Test if the divider is 1 or 0 */ + if ((i2sdiv < 2) || (i2sdiv > 0xFF)) + { + /* Set the default values */ + i2sdiv = 2; + i2sodd = 0; + } + /* Write to SPIx I2SPR register the computed value */ + SPIx->I2SPR = (uint16_t)(i2sdiv | i2sodd | I2S_InitStruct->I2S_MCLKOutput); + + /* Configure the I2S with the SPI_InitStruct values */ + tmpreg |= (uint16_t)(I2S_Mode_Select | I2S_InitStruct->I2S_Mode | \ + I2S_InitStruct->I2S_Standard | I2S_InitStruct->I2S_DataFormat | \ + I2S_InitStruct->I2S_CPOL); + + /* Write to SPIx I2SCFGR */ + SPIx->I2SCFGR = tmpreg; +} + +/** + * @brief Fills each SPI_InitStruct member with its default value. + * @param SPI_InitStruct : pointer to a SPI_InitTypeDef structure + * which will be initialized. + * @retval : None + */ void SPI_StructInit(SPI_InitTypeDef* SPI_InitStruct) { /*--------------- Reset SPI init structure parameters values -----------------*/ /* Initialize the SPI_Direction member */ SPI_InitStruct->SPI_Direction = SPI_Direction_2Lines_FullDuplex; - /* initialize the SPI_Mode member */ SPI_InitStruct->SPI_Mode = SPI_Mode_Slave; - /* initialize the SPI_DataSize member */ SPI_InitStruct->SPI_DataSize = SPI_DataSize_8b; - /* Initialize the SPI_CPOL member */ SPI_InitStruct->SPI_CPOL = SPI_CPOL_Low; - /* Initialize the SPI_CPHA member */ SPI_InitStruct->SPI_CPHA = SPI_CPHA_1Edge; - /* Initialize the SPI_NSS member */ SPI_InitStruct->SPI_NSS = SPI_NSS_Hard; - /* Initialize the SPI_BaudRatePrescaler member */ SPI_InitStruct->SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2; - /* Initialize the SPI_FirstBit member */ SPI_InitStruct->SPI_FirstBit = SPI_FirstBit_MSB; - /* Initialize the SPI_CRCPolynomial member */ SPI_InitStruct->SPI_CRCPolynomial = 7; } -/******************************************************************************* -* Function Name : SPI_Cmd -* Description : Enables or disables the specified SPI peripheral. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - NewState: new state of the SPIx peripheral. -* This parameter can be: ENABLE or DISABLE. -* Output : None -* Return : None -*******************************************************************************/ +/** + * @brief Fills each I2S_InitStruct member with its default value. + * @param I2S_InitStruct : pointer to a I2S_InitTypeDef structure + * which will be initialized. + * @retval : None + */ +void I2S_StructInit(I2S_InitTypeDef* I2S_InitStruct) +{ +/*--------------- Reset I2S init structure parameters values -----------------*/ + /* Initialize the I2S_Mode member */ + I2S_InitStruct->I2S_Mode = I2S_Mode_SlaveTx; + + /* Initialize the I2S_Standard member */ + I2S_InitStruct->I2S_Standard = I2S_Standard_Phillips; + + /* Initialize the I2S_DataFormat member */ + I2S_InitStruct->I2S_DataFormat = I2S_DataFormat_16b; + + /* Initialize the I2S_MCLKOutput member */ + I2S_InitStruct->I2S_MCLKOutput = I2S_MCLKOutput_Disable; + + /* Initialize the I2S_AudioFreq member */ + I2S_InitStruct->I2S_AudioFreq = I2S_AudioFreq_Default; + + /* Initialize the I2S_CPOL member */ + I2S_InitStruct->I2S_CPOL = I2S_CPOL_Low; +} + +/** + * @brief Enables or disables the specified SPI peripheral. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param NewState: new state of the SPIx peripheral. + * This parameter can be: ENABLE or DISABLE. + * @retval : None + */ void SPI_Cmd(SPI_TypeDef* SPIx, FunctionalState NewState) { /* Check the parameters */ - assert(IS_FUNCTIONAL_STATE(NewState)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected SPI peripheral */ @@ -193,122 +372,149 @@ void SPI_Cmd(SPI_TypeDef* SPIx, FunctionalState NewState) } } -/******************************************************************************* -* Function Name : SPI_ITConfig -* Description : Enables or disables the specified SPI interrupts. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_IT: specifies the SPI interrupts sources to be enabled -* or disabled. -* This parameter can be one of the following values: -* - SPI_IT_TXE: Tx buffer empty interrupt mask -* - SPI_IT_RXNE: Rx buffer not empty interrupt mask -* - SPI_IT_ERR: Error interrupt mask -* - NewState: new state of the specified SPI interrupts. -* This parameter can be: ENABLE or DISABLE. -* Output : None -* Return : None -*******************************************************************************/ -void SPI_ITConfig(SPI_TypeDef* SPIx, u8 SPI_IT, FunctionalState NewState) +/** + * @brief Enables or disables the specified SPI peripheral (in I2S mode). + * @param SPIx: where x can be 2 or 3 to select the SPI peripheral. + * @param NewState: new state of the SPIx peripheral. + * This parameter can be: ENABLE or DISABLE. + * @retval : None + */ +void I2S_Cmd(SPI_TypeDef* SPIx, FunctionalState NewState) { - u16 itpos = 0, itmask = 0 ; - /* Check the parameters */ - assert(IS_FUNCTIONAL_STATE(NewState)); - assert(IS_SPI_CONFIG_IT(SPI_IT)); + assert_param(IS_SPI_23_PERIPH(SPIx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + if (NewState != DISABLE) + { + /* Enable the selected SPI peripheral (in I2S mode) */ + SPIx->I2SCFGR |= I2SCFGR_I2SE_Set; + } + else + { + /* Disable the selected SPI peripheral (in I2S mode) */ + SPIx->I2SCFGR &= I2SCFGR_I2SE_Reset; + } +} - /* Get the SPI IT index */ - itpos = SPI_IT >> 4; +/** + * @brief Enables or disables the specified SPI/I2S interrupts. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * 2 or 3 in I2S mode + * @param SPI_I2S_IT: specifies the SPI/I2S interrupt source to be + * enabled or disabled. + * This parameter can be one of the following values: + * @arg SPI_I2S_IT_TXE: Tx buffer empty interrupt mask + * @arg SPI_I2S_IT_RXNE: Rx buffer not empty interrupt mask + * @arg SPI_I2S_IT_ERR: Error interrupt mask + * @param NewState: new state of the specified SPI/I2S interrupt. + * This parameter can be: ENABLE or DISABLE. + * @retval : None + */ +void SPI_I2S_ITConfig(SPI_TypeDef* SPIx, uint8_t SPI_I2S_IT, FunctionalState NewState) +{ + uint16_t itpos = 0, itmask = 0 ; + /* Check the parameters */ + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + assert_param(IS_SPI_I2S_CONFIG_IT(SPI_I2S_IT)); + /* Get the SPI/I2S IT index */ + itpos = SPI_I2S_IT >> 4; /* Set the IT mask */ - itmask = (u16)((u16)1 << itpos); - + itmask = (uint16_t)((uint16_t)1 << itpos); if (NewState != DISABLE) { - /* Enable the selected SPI interrupt */ + /* Enable the selected SPI/I2S interrupt */ SPIx->CR2 |= itmask; } else { - /* Disable the selected SPI interrupt */ - SPIx->CR2 &= (u16)~itmask; + /* Disable the selected SPI/I2S interrupt */ + SPIx->CR2 &= (uint16_t)~itmask; } } -/******************************************************************************* -* Function Name : SPI_DMACmd -* Description : Enables or disables the SPIx’s DMA interface. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_DMAReq: specifies the SPI DMA transfer request to be -* enabled or disabled. -* This parameter can be any combination of the following values: -* - SPI_DMAReq_Tx: Tx buffer DMA transfer request -* - SPI_DMAReq_Rx: Rx buffer DMA transfer request -* - NewState: new state of the selected SPI DMA transfer request. -* This parameter can be: ENABLE or DISABLE. -* Output : None -* Return : None -*******************************************************************************/ -void SPI_DMACmd(SPI_TypeDef* SPIx, u16 SPI_DMAReq, FunctionalState NewState) +/** + * @brief Enables or disables the SPIx/I2Sx DMA interface. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * 2 or 3 in I2S mode + * @param SPI_I2S_DMAReq: specifies the SPI/I2S DMA transfer request + * to be enabled or disabled. + * This parameter can be any combination of the following values: + * @arg SPI_I2S_DMAReq_Tx: Tx buffer DMA transfer request + * @arg SPI_I2S_DMAReq_Rx: Rx buffer DMA transfer request + * @param NewState: new state of the selected SPI/I2S DMA transfer + * request. + * This parameter can be: ENABLE or DISABLE. + * @retval : None + */ +void SPI_I2S_DMACmd(SPI_TypeDef* SPIx, uint16_t SPI_I2S_DMAReq, FunctionalState NewState) { /* Check the parameters */ - assert(IS_FUNCTIONAL_STATE(NewState)); - assert(IS_SPI_DMA_REQ(SPI_DMAReq)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + assert_param(IS_SPI_I2S_DMAREQ(SPI_I2S_DMAReq)); if (NewState != DISABLE) { - /* Enable the selected SPI DMA requests */ - SPIx->CR2 |= SPI_DMAReq; + /* Enable the selected SPI/I2S DMA requests */ + SPIx->CR2 |= SPI_I2S_DMAReq; } else { - /* Disable the selected SPI DMA requests */ - SPIx->CR2 &= (u16)~SPI_DMAReq; + /* Disable the selected SPI/I2S DMA requests */ + SPIx->CR2 &= (uint16_t)~SPI_I2S_DMAReq; } } -/******************************************************************************* -* Function Name : SPI_SendData -* Description : Transmits a Data through the SPIx peripheral. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - Data : Data to be transmitted.. -* Output : None -* Return : None -*******************************************************************************/ -void SPI_SendData(SPI_TypeDef* SPIx, u16 Data) +/** + * @brief Transmits a Data through the SPIx/I2Sx peripheral. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * 2 or 3 in I2S mode + * @param Data : Data to be transmitted.. + * @retval : None + */ +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; } -/******************************************************************************* -* Function Name : SPI_ReceiveData -* Description : Returns the most recent received data by the SPIx peripheral. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* Output : None -* Return : The value of the received data. -*******************************************************************************/ -u16 SPI_ReceiveData(SPI_TypeDef* SPIx) +/** + * @brief Returns the most recent received data by the SPIx/I2Sx peripheral. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * 2 or 3 in I2S mode + * @retval : The value of the received data. + */ +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; } -/******************************************************************************* -* Function Name : SPI_NSSInternalSoftwareConfig -* Description : Configures internally by software the NSS pin for the selected -* SPI. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_NSSInternalSoft: specifies the SPI NSS internal state. -* This parameter can be one of the following values: -* - SPI_NSSInternalSoft_Set: Set NSS pin internally -* - SPI_NSSInternalSoft_Reset: Reset NSS pin internally -* Output : None -* Return : None -*******************************************************************************/ -void SPI_NSSInternalSoftwareConfig(SPI_TypeDef* SPIx, u16 SPI_NSSInternalSoft) +/** + * @brief Configures internally by software the NSS pin for the selected + * SPI. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param SPI_NSSInternalSoft: specifies the SPI NSS internal state. + * This parameter can be one of the following values: + * @arg SPI_NSSInternalSoft_Set: Set NSS pin internally + * @arg SPI_NSSInternalSoft_Reset: Reset NSS pin internally + * @retval : None + */ +void SPI_NSSInternalSoftwareConfig(SPI_TypeDef* SPIx, uint16_t SPI_NSSInternalSoft) { /* Check the parameters */ - assert(IS_SPI_NSS_INTERNAL(SPI_NSSInternalSoft)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_NSS_INTERNAL(SPI_NSSInternalSoft)); if (SPI_NSSInternalSoft != SPI_NSSInternalSoft_Reset) { /* Set NSS pin internally by software */ @@ -321,20 +527,18 @@ void SPI_NSSInternalSoftwareConfig(SPI_TypeDef* SPIx, u16 SPI_NSSInternalSoft) } } -/******************************************************************************* -* Function Name : SPI_SSOutputCmd -* Description : Enables or disables the SS output for the selected SPI. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - NewState: new state of the SPIx SS output. -* This parameter can be: ENABLE or DISABLE. -* Output : None -* Return : None -*******************************************************************************/ +/** + * @brief Enables or disables the SS output for the selected SPI. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param NewState: new state of the SPIx SS output. + * This parameter can be: ENABLE or DISABLE. + * @retval : None + */ void SPI_SSOutputCmd(SPI_TypeDef* SPIx, FunctionalState NewState) { /* Check the parameters */ - assert(IS_FUNCTIONAL_STATE(NewState)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected SPI SS output */ @@ -347,62 +551,53 @@ void SPI_SSOutputCmd(SPI_TypeDef* SPIx, FunctionalState NewState) } } -/******************************************************************************* -* Function Name : SPI_DataSizeConfig -* Description : Configures the data size for the selected SPI. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_DataSize: specifies the SPI data size. -* This parameter can be one of the following values: -* - SPI_DataSize_16b: Set data frame format to 16bit -* - SPI_DataSize_8b: Set data frame format to 8bit -* Output : None -* Return : None -*******************************************************************************/ -void SPI_DataSizeConfig(SPI_TypeDef* SPIx, u16 SPI_DataSize) +/** + * @brief Configures the data size for the selected SPI. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param SPI_DataSize: specifies the SPI data size. + * This parameter can be one of the following values: + * @arg SPI_DataSize_16b: Set data frame format to 16bit + * @arg SPI_DataSize_8b: Set data frame format to 8bit + * @retval : None + */ +void SPI_DataSizeConfig(SPI_TypeDef* SPIx, uint16_t SPI_DataSize) { /* Check the parameters */ - assert(IS_SPI_DATASIZE(SPI_DataSize)); - - if (SPI_DataSize != SPI_DataSize_8b) - { - /* Set data frame format to 16bit */ - SPIx->CR1 |= SPI_DataSize_16b; - } - else - { - /* Set data frame format to 8bit */ - SPIx->CR1 &= SPI_DataSize_8b; - } + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_DATASIZE(SPI_DataSize)); + /* Clear DFF bit */ + SPIx->CR1 &= (uint16_t)~SPI_DataSize_16b; + /* Set new DFF bit value */ + SPIx->CR1 |= SPI_DataSize; } -/******************************************************************************* -* Function Name : SPI_TransmitCRC -* Description : Transmit the SPIx CRC value. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* Output : None -* Return : None -*******************************************************************************/ +/** + * @brief Transmit the SPIx CRC value. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @retval : None + */ void SPI_TransmitCRC(SPI_TypeDef* SPIx) { + /* Check the parameters */ + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + /* Enable the selected SPI CRC transmission */ SPIx->CR1 |= CR1_CRCNext_Set; } -/******************************************************************************* -* Function Name : SPI_CalculateCRC -* Description : Enables or disables the CRC value calculation of the -* transfered bytes. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - NewState: new state of the SPIx CRC value calculation. -* This parameter can be: ENABLE or DISABLE. -* Output : None -* Return : None -*******************************************************************************/ +/** + * @brief Enables or disables the CRC value calculation of the + * transfered bytes. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param NewState: new state of the SPIx CRC value calculation. + * This parameter can be: ENABLE or DISABLE. + * @retval : None + */ void SPI_CalculateCRC(SPI_TypeDef* SPIx, FunctionalState NewState) { /* Check the parameters */ - assert(IS_FUNCTIONAL_STATE(NewState)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); if (NewState != DISABLE) { /* Enable the selected SPI CRC calculation */ @@ -415,25 +610,22 @@ void SPI_CalculateCRC(SPI_TypeDef* SPIx, FunctionalState NewState) } } -/******************************************************************************* -* Function Name : SPI_GetCRC -* Description : Returns the transmit or the receive CRC register value for -* the specified SPI. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_CRC: specifies the CRC register to be read. -* This parameter can be one of the following values: -* - SPI_CRC_Tx: Selects Tx CRC register -* - SPI_CRC_Rx: Selects Rx CRC register -* Output : None -* Return : The selected CRC register value.. -*******************************************************************************/ -u16 SPI_GetCRC(SPI_TypeDef* SPIx, u8 SPI_CRC) +/** + * @brief Returns the transmit or the receive CRC register value for + * the specified SPI. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param SPI_CRC: specifies the CRC register to be read. + * This parameter can be one of the following values: + * @arg SPI_CRC_Tx: Selects Tx CRC register + * @arg SPI_CRC_Rx: Selects Rx CRC register + * @retval : The selected CRC register value.. + */ +uint16_t SPI_GetCRC(SPI_TypeDef* SPIx, uint8_t SPI_CRC) { - u16 crcreg = 0; - + uint16_t crcreg = 0; /* Check the parameters */ - assert(IS_SPI_CRC(SPI_CRC)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_CRC(SPI_CRC)); if (SPI_CRC != SPI_CRC_Rx) { /* Get the Tx CRC register */ @@ -444,42 +636,40 @@ u16 SPI_GetCRC(SPI_TypeDef* SPIx, u8 SPI_CRC) /* Get the Rx CRC register */ crcreg = SPIx->RXCRCR; } - /* Return the selected CRC register */ return crcreg; } -/******************************************************************************* -* Function Name : SPI_GetCRCPolynomial -* Description : Returns the CRC Polynomial register value for the specified SPI. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* Output : None -* Return : The CRC Polynomial register value. -*******************************************************************************/ -u16 SPI_GetCRCPolynomial(SPI_TypeDef* SPIx) +/** + * @brief Returns the CRC Polynomial register value for the specified SPI. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @retval : The CRC Polynomial register value. + */ +uint16_t SPI_GetCRCPolynomial(SPI_TypeDef* SPIx) { + /* Check the parameters */ + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + /* Return the CRC polynomial register */ return SPIx->CRCPR; } -/******************************************************************************* -* Function Name : SPI_BiDirectionalLineConfig -* Description : Selects the data transfer direction in bi-directional mode -* for the specified SPI. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_Direction: specifies the data transfer direction in -* bi-directional mode. -* This parameter can be one of the following values: -* - SPI_Direction_Tx: Selects Tx transmission direction -* - SPI_Direction_Rx: Selects Rx receive direction -* Output : None -* Return : None -*******************************************************************************/ -void SPI_BiDirectionalLineConfig(SPI_TypeDef* SPIx, u16 SPI_Direction) +/** + * @brief Selects the data transfer direction in bi-directional mode + * for the specified SPI. + * @param SPIx: where x can be 1, 2 or 3 to select the SPI peripheral. + * @param SPI_Direction: specifies the data transfer direction in + * bi-directional mode. + * This parameter can be one of the following values: + * @arg SPI_Direction_Tx: Selects Tx transmission direction + * @arg SPI_Direction_Rx: Selects Rx receive direction + * @retval : None + */ +void SPI_BiDirectionalLineConfig(SPI_TypeDef* SPIx, uint16_t SPI_Direction) { /* Check the parameters */ - assert(IS_SPI_DIRECTION(SPI_Direction)); - + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_DIRECTION(SPI_Direction)); if (SPI_Direction == SPI_Direction_Tx) { /* Set the Tx only mode */ @@ -492,167 +682,155 @@ void SPI_BiDirectionalLineConfig(SPI_TypeDef* SPIx, u16 SPI_Direction) } } -/******************************************************************************* -* Function Name : SPI_GetFlagStatus -* Description : Checks whether the specified SPI flag is set or not. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_FLAG: specifies the flag to check. -* This parameter can be one of the following values: -* - SPI_FLAG_BSY: Busy flag. -* - SPI_FLAG_OVR: Overrun flag. -* - SPI_FLAG_MODF: Mode Fault flag. -* - SPI_FLAG_CRCERR: CRC Error flag. -* - SPI_FLAG_TXE: Transmit buffer empty flag. -* - SPI_FLAG_RXNE: Receive buffer not empty flag. -* Output : None -* Return : The new state of SPI_FLAG (SET or RESET). -*******************************************************************************/ -FlagStatus SPI_GetFlagStatus(SPI_TypeDef* SPIx, u16 SPI_FLAG) +/** + * @brief Checks whether the specified SPI/I2S flag is set or not. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * 2 or 3 in I2S mode + * @param SPI_I2S_FLAG: specifies the SPI/I2S flag to check. + * This parameter can be one of the following values: + * @arg SPI_I2S_FLAG_TXE: Transmit buffer empty flag. + * @arg SPI_I2S_FLAG_RXNE: Receive buffer not empty flag. + * @arg SPI_I2S_FLAG_BSY: Busy flag. + * @arg SPI_I2S_FLAG_OVR: Overrun flag. + * @arg SPI_FLAG_MODF: Mode Fault flag. + * @arg SPI_FLAG_CRCERR: CRC Error flag. + * @arg I2S_FLAG_UDR: Underrun Error flag. + * @arg I2S_FLAG_CHSIDE: Channel Side flag. + * @retval : The new state of SPI_I2S_FLAG (SET or RESET). + */ +FlagStatus SPI_I2S_GetFlagStatus(SPI_TypeDef* SPIx, uint16_t SPI_I2S_FLAG) { FlagStatus bitstatus = RESET; - /* Check the parameters */ - assert(IS_SPI_GET_FLAG(SPI_FLAG)); - - /* Check the status of the specified SPI flag */ - if ((SPIx->SR & SPI_FLAG) != (u16)RESET) + 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_FLAG is set */ + /* SPI_I2S_FLAG is set */ bitstatus = SET; } else { - /* SPI_FLAG is reset */ + /* SPI_I2S_FLAG is reset */ bitstatus = RESET; } - /* Return the SPI_FLAG status */ + /* Return the SPI_I2S_FLAG status */ return bitstatus; } -/******************************************************************************* -* Function Name : SPI_ClearFlag -* Description : Clears the SPIx's pending flags. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_FLAG: specifies the flag to clear. -* This parameter can be any combination of the following values: -* - SPI_FLAG_OVR: Overrun flag. -* - SPI_FLAG_MODF: Mode Fault flag. -* - SPI_FLAG_CRCERR: CRC Error flag. -* Output : None -* Return : None -*******************************************************************************/ -void SPI_ClearFlag(SPI_TypeDef* SPIx, u16 SPI_FLAG) +/** + * @brief Clears the SPIx CRC Error (CRCERR) flag. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * @param SPI_I2S_FLAG: specifies the SPI flag to clear. + * This function clears only CRCERR flag. + * @note + * - OVR (OverRun error) flag is cleared by software sequence: a read + * operation to SPI_DR register (SPI_I2S_ReceiveData()) followed by a read + * operation to SPI_SR register (SPI_I2S_GetFlagStatus()). + * - UDR (UnderRun error) flag is cleared by a read operation to + * SPI_SR register (SPI_I2S_GetFlagStatus()). + * - MODF (Mode Fault) flag is cleared by software sequence: a read/write + * operation to SPI_SR register (SPI_I2S_GetFlagStatus()) followed by a + * write operation to SPI_CR1 register (SPI_Cmd() to enable the SPI). + * @retval : None + */ +void SPI_I2S_ClearFlag(SPI_TypeDef* SPIx, uint16_t SPI_I2S_FLAG) { /* Check the parameters */ - assert(IS_SPI_CLEAR_FLAG(SPI_FLAG)); + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_I2S_CLEAR_FLAG(SPI_I2S_FLAG)); - /* SPI_FLAG_MODF flag clear */ - if(SPI_FLAG == SPI_FLAG_MODF) - { - /* Read SR register */ - (void)SPIx->SR; - /* Write on CR1 register */ - SPIx->CR1 |= CR1_SPE_Set; - } - /* SPI_FLAG_OVR flag clear */ - else if(SPI_FLAG == SPI_FLAG_OVR) - { - /* Read SR register */ - (void)SPIx->SR; - } - else /* SPI_FLAG_CRCERR flag clear */ - { - /* Clear the selected SPI flag */ - SPIx->SR &= (u16)~SPI_FLAG; - } + /* Clear the selected SPI CRC Error (CRCERR) flag */ + SPIx->SR = (uint16_t)~SPI_I2S_FLAG; } -/******************************************************************************* -* Function Name : SPI_GetITStatus -* Description : Checks whether the specified SPI interrupt has occurred or not. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_IT: specifies the SPI interrupt source to check. -* This parameter can be one of the following values: -* - SPI_IT_OVR: Overrun interrupt. -* - SPI_IT_MODF: Mode Fault interrupt. -* - SPI_IT_CRCERR: CRC Error interrupt. -* - SPI_IT_TXE: Transmit buffer empty interrupt. -* - SPI_IT_RXNE: Receive buffer not empty interrupt. -* Output : None -* Return : The new state of SPI_IT (SET or RESET). -*******************************************************************************/ -ITStatus SPI_GetITStatus(SPI_TypeDef* SPIx, u8 SPI_IT) +/** + * @brief Checks whether the specified SPI/I2S interrupt has occurred or not. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * 2 or 3 in I2S mode + * @param SPI_I2S_IT: specifies the SPI/I2S interrupt source to check. + * This parameter can be one of the following values: + * @arg SPI_I2S_IT_TXE: Transmit buffer empty interrupt. + * @arg SPI_I2S_IT_RXNE: Receive buffer not empty interrupt. + * @arg SPI_I2S_IT_OVR: Overrun interrupt. + * @arg SPI_IT_MODF: Mode Fault interrupt. + * @arg SPI_IT_CRCERR: CRC Error interrupt. + * @arg I2S_IT_UDR: Underrun Error interrupt. + * @retval : The new state of SPI_I2S_IT (SET or RESET). + */ +ITStatus SPI_I2S_GetITStatus(SPI_TypeDef* SPIx, uint8_t SPI_I2S_IT) { ITStatus bitstatus = RESET; - u16 itpos = 0, itmask = 0, enablestatus = 0; - + uint16_t itpos = 0, itmask = 0, enablestatus = 0; /* Check the parameters */ - assert(IS_SPI_GET_IT(SPI_IT)); - - /* Get the SPI IT index */ - itpos = (u16)((u16)0x01 << (SPI_IT & (u8)0x0F)); - - /* Get the SPI IT index */ - itmask = SPI_IT >> 4; + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_I2S_GET_IT(SPI_I2S_IT)); + /* Get the SPI/I2S IT index */ + itpos = (uint16_t)((uint16_t)0x01 << (SPI_I2S_IT & (uint8_t)0x0F)); + /* Get the SPI/I2S IT mask */ + itmask = SPI_I2S_IT >> 4; /* Set the IT mask */ - itmask = (u16)((u16)0x01 << itmask); - /* Get the SPI_IT enable bit status */ + itmask = (uint16_t)((uint16_t)0x01 << itmask); + /* Get the SPI_I2S_IT enable bit status */ enablestatus = (SPIx->CR2 & itmask) ; - - /* Check the status of the specified SPI interrupt */ - if (((SPIx->SR & itpos) != (u16)RESET) && enablestatus) + /* Check the status of the specified SPI/I2S interrupt */ + if (((SPIx->SR & itpos) != (uint16_t)RESET) && enablestatus) { - /* SPI_IT is set */ + /* SPI_I2S_IT is set */ bitstatus = SET; } else { - /* SPI_IT is reset */ + /* SPI_I2S_IT is reset */ bitstatus = RESET; } - /* Return the SPI_IT status */ + /* Return the SPI_I2S_IT status */ return bitstatus; } -/******************************************************************************* -* Function Name : SPI_ClearITPendingBit -* Description : Clears the SPI’s interrupt pending bits. -* Input : - SPIx: where x can be 1 or 2 to select the SPI peripheral. -* - SPI_IT: specifies the SPI interrupt pending bit to clear. -* This parameter can be one of the following values: -* - SPI_IT_OVR: Overrun interrupt. -* - SPI_IT_MODF: Mode Fault interrupt. -* - SPI_IT_CRCERR: CRC Error interrupt. -* Output : None -* Return : None -*******************************************************************************/ -void SPI_ClearITPendingBit(SPI_TypeDef* SPIx, u8 SPI_IT) +/** + * @brief Clears the SPIx CRC Error (CRCERR) interrupt pending bit. + * @param SPIx: where x can be : + * 1, 2 or 3 in SPI mode + * @param SPI_I2S_IT: specifies the SPI interrupt pending bit to clear. + * This function clears only CRCERR intetrrupt pending bit. + * @note + * - OVR (OverRun Error) interrupt pending bit is cleared by software + * sequence: a read operation to SPI_DR register (SPI_I2S_ReceiveData()) + * followed by a read operation to SPI_SR register (SPI_I2S_GetITStatus()). + * - UDR (UnderRun Error) interrupt pending bit is cleared by a read + * operation to SPI_SR register (SPI_I2S_GetITStatus()). + * - MODF (Mode Fault) interrupt pending bit is cleared by software sequence: + * a read/write operation to SPI_SR register (SPI_I2S_GetITStatus()) + * followed by a write operation to SPI_CR1 register (SPI_Cmd() to enable + * the SPI). + * @retval : None + */ +void SPI_I2S_ClearITPendingBit(SPI_TypeDef* SPIx, uint8_t SPI_I2S_IT) { - u16 itpos = 0; - + uint16_t itpos = 0; /* Check the parameters */ - assert(IS_SPI_CLEAR_IT(SPI_IT)); - - /* SPI_IT_MODF pending bit clear */ - if(SPI_IT == SPI_IT_MODF) - { - /* Read SR register */ - (void)SPIx->SR; - /* Write on CR1 register */ - SPIx->CR1 |= CR1_SPE_Set; - } - else if(SPI_IT == SPI_IT_OVR) /* SPI_IT_OVR pending bit clear */ - { - /* Read SR register */ - (void)(SPIx->SR); - } - else /* SPI_IT_CRCERR pending bit clear */ - { - /* Get the SPI IT index */ - itpos = (u16)((u16)0x01 << (SPI_IT & (u8)0x0F)); - /* Clear the selected SPI interrupt pending bits */ - SPIx->SR &= (u16)~itpos; - } + assert_param(IS_SPI_ALL_PERIPH(SPIx)); + assert_param(IS_SPI_I2S_CLEAR_IT(SPI_I2S_IT)); + /* Get the SPI IT index */ + itpos = (uint16_t)((uint16_t)0x01 << (SPI_I2S_IT & (uint8_t)0x0F)); + /* Clear the selected SPI CRC Error (CRCERR) interrupt pending bit */ + SPIx->SR = (uint16_t)~itpos; } +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ -/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/ +/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/