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/**
******************************************************************************
* @file stm32l1xx_hal_spi_ex.c
* @author MCD Application Team
* @version V1.0.0
* @date 5-September-2014
* @brief Extended SPI HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities SPI extension peripheral:
* + Extended Peripheral Control functions
*
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* 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 "stm32l1xx_hal.h"
/** @addtogroup STM32L1xx_HAL_Driver
* @{
*/
/** @addtogroup SPI
* @{
*/
#ifdef HAL_SPI_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @addtogroup SPI_Exported_Functions
* @{
*/
/** @addtogroup SPI_Exported_Functions_Group1
*
* @{
*/
/**
* @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 == HAL_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 */
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 (STM32L152xE) || defined (STM32L162xE)
/* 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;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_SPI_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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