text: /**
    ******************************************************************************
    * @file    SPI/SPI_FullDuplex_ComPolling/Src/stm32l0xx_hal_msp.c
    * @author  MCD Application Team
    * @brief   HAL MSP module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2016 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 "main.h"
  
  /** @addtogroup STM32L0xx_HAL_Examples
    * @{
    */
  
  /** @defgroup SPI_FullDuplex_AdvComPolling
    * @{
    */
  
  /* Private typedef -----------------------------------------------------------*/
  /* Private define ------------------------------------------------------------*/
  /* Private macro -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private function prototypes -----------------------------------------------*/
  /* Private functions ---------------------------------------------------------*/
  
  /** @defgroup HAL_MSP_Private_Functions
    * @{
    */
  
  /**
    * @brief SPI MSP Initialization 
    *        This function configures the hardware resources used in this example: 
    *           - Peripheral's clock enable
    *           - Peripheral's GPIO Configuration  
    * @param hspi: SPI handle pointer
    * @retval None
    */
  void HAL_SPI_MspInit(SPI_HandleTypeDef *hspi)
  {
  GPIO_InitTypeDef  GPIO_InitStruct;
  
    if(hspi->Instance == SPIx)
    {     
      /*##-1- Enable peripherals and GPIO Clocks #################################*/
      /* Enable GPIO TX/RX clock */
      SPIx_SCK_GPIO_CLK_ENABLE();
      SPIx_MISO_GPIO_CLK_ENABLE();
      SPIx_MOSI_GPIO_CLK_ENABLE();
      /* Enable SPI clock */
      SPIx_CLK_ENABLE(); 
      
      /*##-2- Configure peripheral GPIO ##########################################*/  
      /* SPI SCK GPIO pin configuration  */
      GPIO_InitStruct.Pin       = SPIx_SCK_PIN;
      GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
      GPIO_InitStruct.Pull      = GPIO_PULLDOWN;
      GPIO_InitStruct.Speed     = GPIO_SPEED_FREQ_VERY_HIGH;
      GPIO_InitStruct.Alternate = SPIx_SCK_AF;
      HAL_GPIO_Init(SPIx_SCK_GPIO_PORT, &GPIO_InitStruct);
  
      /* SPI MISO GPIO pin configuration  */
      GPIO_InitStruct.Pin = SPIx_MISO_PIN;
      GPIO_InitStruct.Alternate = SPIx_MISO_AF;
      HAL_GPIO_Init(SPIx_MISO_GPIO_PORT, &GPIO_InitStruct);
  
      /* SPI MOSI GPIO pin configuration  */
      GPIO_InitStruct.Pin = SPIx_MOSI_PIN;
      GPIO_InitStruct.Alternate = SPIx_MOSI_AF;
      HAL_GPIO_Init(SPIx_MOSI_GPIO_PORT, &GPIO_InitStruct);
    }
  }
  
  /**
    * @brief SPI MSP De-Initialization 
    *        This function frees the hardware resources used in this example:
    *          - Disable the Peripheral's clock
    *          - Revert GPIO configuration to its default state
    * @param hspi: SPI handle pointer
    * @retval None
    */
  void HAL_SPI_MspDeInit(SPI_HandleTypeDef *hspi)
  {
    if(hspi->Instance == SPIx)
    {   
      /*##-1- Reset peripherals ##################################################*/
      SPIx_FORCE_RESET();
      SPIx_RELEASE_RESET();
      
      /*##-2- Disable peripherals and GPIO Clocks ################################*/
      /* Configure SPI SCK as alternate function  */
      HAL_GPIO_DeInit(SPIx_SCK_GPIO_PORT, SPIx_SCK_PIN);
      /* Configure SPI MISO as alternate function  */
      HAL_GPIO_DeInit(SPIx_MISO_GPIO_PORT, SPIx_MISO_PIN);
      /* Configure SPI MOSI as alternate function  */
      HAL_GPIO_DeInit(SPIx_MOSI_GPIO_PORT, SPIx_MOSI_PIN);
    }
  }
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  