Renesas / mbed-src_GR-PEACH_rev_b

mbed library sources for GR-PEACH rev.B.

Fork of mbed-src by mbed official

Diff: targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_spi.c

Revision:
497:d54623194236
Parent:
496:543871686697
Child:
498:b3c41e21851c
--- a/targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_spi.c	Tue Mar 24 09:00:08 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,923 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32f10x_spi.c
-  * @author  MCD Application Team
-  * @version V3.6.1
-  * @date    05-March-2012
-  * @brief   This file provides all the SPI firmware functions.
- *******************************************************************************
- * Copyright (c) 2014, STMicroelectronics
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. Neither the name of STMicroelectronics nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f10x_spi.h"
-#include "stm32f10x_rcc.h"
-
-/** @addtogroup STM32F10x_StdPeriph_Driver
-  * @{
-  */
-
-/** @defgroup SPI 
-  * @brief SPI driver modules
-  * @{
-  */ 
-
-/** @defgroup SPI_Private_TypesDefinitions
-  * @{
-  */
-
-/**
-  * @}
-  */ 
-
-
-/** @defgroup SPI_Private_Defines
-  * @{
-  */
-
-/* SPI SPE mask */
-#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      ((uint16_t)0x1000)
-
-/* SPI CRCEN mask */
-#define CR1_CRCEN_Set        ((uint16_t)0x2000)
-#define CR1_CRCEN_Reset      ((uint16_t)0xDFFF)
-
-/* SPI SSOE mask */
-#define CR2_SSOE_Set         ((uint16_t)0x0004)
-#define CR2_SSOE_Reset       ((uint16_t)0xFFFB)
-
-/* SPI registers Masks */
-#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) 
-
-/* I2S clock source selection masks */
-#define I2S2_CLOCK_SRC       ((uint32_t)(0x00020000))
-#define I2S3_CLOCK_SRC       ((uint32_t)(0x00040000))
-#define I2S_MUL_MASK         ((uint32_t)(0x0000F000))
-#define I2S_DIV_MASK         ((uint32_t)(0x000000F0))
-
-/**
-  * @}
-  */
-
-/** @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)
-{
-  /* Check the parameters */
-  assert_param(IS_SPI_ALL_PERIPH(SPIx));
-
-  if (SPIx == SPI1)
-  {
-    /* Enable SPI1 reset state */
-    RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, ENABLE);
-    /* Release SPI1 from reset state */
-    RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1, DISABLE);
-  }
-  else if (SPIx == SPI2)
-  {
-    /* Enable SPI2 reset state */
-    RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI2, ENABLE);
-    /* Release SPI2 from reset state */
-    RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI2, DISABLE);
-  }
-  else
-  {
-    if (SPIx == SPI3)
-    {
-      /* Enable SPI3 reset state */
-      RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI3, ENABLE);
-      /* Release SPI3 from reset state */
-      RCC_APB1PeriphResetCmd(RCC_APB1Periph_SPI3, DISABLE);
-    }
-  }
-}
-
-/**
-  * @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)
-{
-  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;
-  /* Clear BIDIMode, BIDIOE, RxONLY, SSM, SSI, LSBFirst, BR, MSTR, CPOL and CPHA bits */
-  tmpreg &= CR1_CLEAR_Mask;
-  /* Configure SPIx: direction, NSS management, first transmitted bit, BaudRate prescaler
-     master/salve mode, CPOL and CPHA */
-  /* Set BIDImode, BIDIOE and RxONLY bits according to SPI_Direction value */
-  /* Set SSM, SSI and MSTR bits according to SPI_Mode and SPI_NSS values */
-  /* Set LSBFirst bit according to SPI_FirstBit value */
-  /* 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 |= (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;
-}
-
-/**
-  * @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.
-  * @note
-  *  The function calculates the optimal prescaler needed to obtain the most 
-  *  accurate audio frequency (depending on the I2S clock source, the PLL values 
-  *  and the product configuration). But in case the prescaler value is greater 
-  *  than 511, the default value (0x02) will be configured instead.  *   
-  * @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;
-  uint32_t sourceclock = 0;
-  
-  /* 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 the I2S clock source mask depending on the peripheral number */
-    if(((uint32_t)SPIx) == SPI2_BASE)
-    {
-      /* The mask is relative to I2S2 */
-      tmp = I2S2_CLOCK_SRC;
-    }
-    else 
-    {
-      /* The mask is relative to I2S3 */      
-      tmp = I2S3_CLOCK_SRC;
-    }
-
-    /* Check the I2S clock source configuration depending on the Device:
-       Only Connectivity line devices have the PLL3 VCO clock */
-#ifdef STM32F10X_CL
-    if((RCC->CFGR2 & tmp) != 0)
-    {
-      /* Get the configuration bits of RCC PLL3 multiplier */
-      tmp = (uint32_t)((RCC->CFGR2 & I2S_MUL_MASK) >> 12);
-
-      /* Get the value of the PLL3 multiplier */      
-      if((tmp > 5) && (tmp < 15))
-      {
-        /* Multiplier is between 8 and 14 (value 15 is forbidden) */
-        tmp += 2;
-      }
-      else
-      {
-        if (tmp == 15)
-        {
-          /* Multiplier is 20 */
-          tmp = 20;
-        }
-      }      
-      /* Get the PREDIV2 value */
-      sourceclock = (uint32_t)(((RCC->CFGR2 & I2S_DIV_MASK) >> 4) + 1);
-      
-      /* Calculate the Source Clock frequency based on PLL3 and PREDIV2 values */
-      sourceclock = (uint32_t) ((HSE_Value / sourceclock) * tmp * 2); 
-    }
-    else
-    {
-      /* I2S Clock source is System clock: Get System Clock frequency */
-      RCC_GetClocksFreq(&RCC_Clocks);      
-      
-      /* Get the source clock value: based on System Clock value */
-      sourceclock = RCC_Clocks.SYSCLK_Frequency;
-    }        
-#else /* STM32F10X_HD */
-    /* I2S Clock source is System clock: Get System Clock frequency */
-    RCC_GetClocksFreq(&RCC_Clocks);      
-      
-    /* Get the source clock value: based on System Clock value */
-    sourceclock = RCC_Clocks.SYSCLK_Frequency;    
-#endif /* STM32F10X_CL */    
-
-    /* Compute the Real divider depending on the MCLK output state with a floating point */
-    if(I2S_InitStruct->I2S_MCLKOutput == I2S_MCLKOutput_Enable)
-    {
-      /* MCLK output is enabled */
-      tmp = (uint16_t)(((((sourceclock / 256) * 10) / I2S_InitStruct->I2S_AudioFreq)) + 5);
-    }
-    else
-    {
-      /* MCLK output is disabled */
-      tmp = (uint16_t)(((((sourceclock / (32 * packetlength)) *10 ) / I2S_InitStruct->I2S_AudioFreq)) + 5);
-    }
-    
-    /* Remove the floating 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 or greater than 0xFF */
-  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 | (uint16_t)(i2sodd | (uint16_t)I2S_InitStruct->I2S_MCLKOutput));  
- 
-  /* Configure the I2S with the SPI_InitStruct values */
-  tmpreg |= (uint16_t)(I2S_Mode_Select | (uint16_t)(I2S_InitStruct->I2S_Mode | \
-                  (uint16_t)(I2S_InitStruct->I2S_Standard | (uint16_t)(I2S_InitStruct->I2S_DataFormat | \
-                  (uint16_t)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;
-}
-
-/**
-  * @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_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_FUNCTIONAL_STATE(NewState));
-  if (NewState != DISABLE)
-  {
-    /* Enable the selected SPI peripheral */
-    SPIx->CR1 |= CR1_SPE_Set;
-  }
-  else
-  {
-    /* Disable the selected SPI peripheral */
-    SPIx->CR1 &= CR1_SPE_Reset;
-  }
-}
-
-/**
-  * @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)
-{
-  /* Check the parameters */
-  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;
-  }
-}
-
-/**
-  * @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 = (uint16_t)1 << (uint16_t)itpos;
-
-  if (NewState != DISABLE)
-  {
-    /* Enable the selected SPI/I2S interrupt */
-    SPIx->CR2 |= itmask;
-  }
-  else
-  {
-    /* Disable the selected SPI/I2S interrupt */
-    SPIx->CR2 &= (uint16_t)~itmask;
-  }
-}
-
-/**
-  * @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_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/I2S DMA requests */
-    SPIx->CR2 |= SPI_I2S_DMAReq;
-  }
-  else
-  {
-    /* Disable the selected SPI/I2S DMA requests */
-    SPIx->CR2 &= (uint16_t)~SPI_I2S_DMAReq;
-  }
-}
-
-/**
-  * @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;
-}
-
-/**
-  * @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;
-}
-
-/**
-  * @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_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 */
-    SPIx->CR1 |= SPI_NSSInternalSoft_Set;
-  }
-  else
-  {
-    /* Reset NSS pin internally by software */
-    SPIx->CR1 &= SPI_NSSInternalSoft_Reset;
-  }
-}
-
-/**
-  * @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_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_FUNCTIONAL_STATE(NewState));
-  if (NewState != DISABLE)
-  {
-    /* Enable the selected SPI SS output */
-    SPIx->CR2 |= CR2_SSOE_Set;
-  }
-  else
-  {
-    /* Disable the selected SPI SS output */
-    SPIx->CR2 &= CR2_SSOE_Reset;
-  }
-}
-
-/**
-  * @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_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;
-}
-
-/**
-  * @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;
-}
-
-/**
-  * @brief  Enables or disables the CRC value calculation of the transferred 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_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_FUNCTIONAL_STATE(NewState));
-  if (NewState != DISABLE)
-  {
-    /* Enable the selected SPI CRC calculation */
-    SPIx->CR1 |= CR1_CRCEN_Set;
-  }
-  else
-  {
-    /* Disable the selected SPI CRC calculation */
-    SPIx->CR1 &= CR1_CRCEN_Reset;
-  }
-}
-
-/**
-  * @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)
-{
-  uint16_t crcreg = 0;
-  /* Check the parameters */
-  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 */
-    crcreg = SPIx->TXCRCR;
-  }
-  else
-  {
-    /* Get the Rx CRC register */
-    crcreg = SPIx->RXCRCR;
-  }
-  /* Return the selected CRC register */
-  return crcreg;
-}
-
-/**
-  * @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;
-}
-
-/**
-  * @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_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_SPI_DIRECTION(SPI_Direction));
-  if (SPI_Direction == SPI_Direction_Tx)
-  {
-    /* Set the Tx only mode */
-    SPIx->CR1 |= SPI_Direction_Tx;
-  }
-  else
-  {
-    /* Set the Rx only mode */
-    SPIx->CR1 &= SPI_Direction_Rx;
-  }
-}
-
-/**
-  * @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_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;
-}
-
-/**
-  * @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_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_SPI_I2S_CLEAR_FLAG(SPI_I2S_FLAG));
-    
-    /* Clear the selected SPI CRC Error (CRCERR) flag */
-    SPIx->SR = (uint16_t)~SPI_I2S_FLAG;
-}
-
-/**
-  * @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;
-  uint16_t itpos = 0, itmask = 0, enablestatus = 0;
-
-  /* Check the parameters */
-  assert_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_SPI_I2S_GET_IT(SPI_I2S_IT));
-
-  /* Get the SPI/I2S IT index */
-  itpos = 0x01 << (SPI_I2S_IT & 0x0F);
-
-  /* Get the SPI/I2S IT mask */
-  itmask = SPI_I2S_IT >> 4;
-
-  /* Set the IT mask */
-  itmask = 0x01 << itmask;
-
-  /* Get the SPI_I2S_IT enable bit status */
-  enablestatus = (SPIx->CR2 & itmask) ;
-
-  /* Check the status of the specified SPI/I2S interrupt */
-  if (((SPIx->SR & itpos) != (uint16_t)RESET) && enablestatus)
-  {
-    /* SPI_I2S_IT is set */
-    bitstatus = SET;
-  }
-  else
-  {
-    /* SPI_I2S_IT is reset */
-    bitstatus = RESET;
-  }
-  /* Return the SPI_I2S_IT status */
-  return bitstatus;
-}
-
-/**
-  * @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 interrupt 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)
-{
-  uint16_t itpos = 0;
-  /* Check the parameters */
-  assert_param(IS_SPI_ALL_PERIPH(SPIx));
-  assert_param(IS_SPI_I2S_CLEAR_IT(SPI_I2S_IT));
-
-  /* Get the SPI IT index */
-  itpos = 0x01 << (SPI_I2S_IT & 0x0F);
-
-  /* Clear the selected SPI CRC Error (CRCERR) interrupt pending bit */
-  SPIx->SR = (uint16_t)~itpos;
-}
-/**
-  * @}
-  */ 
-
-/**
-  * @}
-  */ 
-
-/**
-  * @}
-  */ 
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/