/** | |
****************************************************************************** | |
* @file stm32l1xx_hal_spi_ex.c | |
* @author MCD Application Team | |
* @brief Extended SPI HAL module driver. | |
* This file provides firmware functions to manage the following | |
* SPI peripheral extended functionalities : | |
* + IO operation functions | |
* | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2017 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 defines -----------------------------------------------------------*/ | |
/* Private macros ------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private function prototypes -----------------------------------------------*/ | |
/* Exported 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 == 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 >> 16U) & 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; | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
#endif /* HAL_SPI_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |