/**
  ******************************************************************************
  * @file    USB_Device/CustomHID_Standalone/Src/stm32f3xx_hal_msp.c
  * @author  MCD Application Team
  * @brief   HAL MSP module.    
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/**
  * @brief ADC MSP Initialization 
  *        This function configures the hardware resources used in this example: 
  *           - Peripheral's clock enable
  *           - Peripheral's GPIO Configuration  
  * @param hadc: ADC handle pointer
  * @retval None
  */
void HAL_ADC_MspInit(ADC_HandleTypeDef *hadc)
{
  GPIO_InitTypeDef          GPIO_InitStruct;
  static DMA_HandleTypeDef         DmaHandle;
  
  /*##-1- Enable peripherals and GPIO Clocks #################################*/
  /* Enable GPIO clock */
  ADCx_CHANNEL_GPIO_CLK_ENABLE();
  /* ADC1 Periph clock enable */
  ADCx_CLK_ENABLE();
  
  /* Enable DMA1 clock */
  __HAL_RCC_DMA1_CLK_ENABLE(); 
  
  /*##-2- Configure peripheral GPIO ##########################################*/ 
  /* ADC1 Channel7 GPIO pin configuration */
  GPIO_InitStruct.Pin = ADCx_CHANNEL_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(ADCx_CHANNEL_GPIO_PORT, &GPIO_InitStruct);
  
  /*##- 3- Configure DMA #####################################################*/ 

  /*********************** Configure DMA parameters ***************************/

  DmaHandle.Instance                 = DMA1_Channel1;
  DmaHandle.Init.Direction           = DMA_PERIPH_TO_MEMORY;
  DmaHandle.Init.PeriphInc           = DMA_PINC_DISABLE;
  DmaHandle.Init.MemInc              = DMA_MINC_ENABLE;
  DmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
  DmaHandle.Init.MemDataAlignment    = DMA_MDATAALIGN_WORD;
  DmaHandle.Init.Mode                = DMA_CIRCULAR;
  DmaHandle.Init.Priority            = DMA_PRIORITY_HIGH;
  
  /* Deinitialize  & Initialize the DMA for new transfer */
  HAL_DMA_DeInit(&DmaHandle);  
  HAL_DMA_Init(&DmaHandle);
    
  /* Associate the initialized DMA handle to the the ADC handle */
  __HAL_LINKDMA(hadc, DMA_Handle, DmaHandle);

  /*##-4- Configure the NVIC for DMA #########################################*/
  /* NVIC configuration for DMA transfer complete interrupt */
  HAL_NVIC_SetPriority(ADCx_DMA_IRQn, 5, 0);   
  HAL_NVIC_EnableIRQ(ADCx_DMA_IRQn);
}
  
/**
  * @brief ADC MSP De-Initialization 
  *        This function frees the hardware resources used in this example:
  *          - Disable the Peripheral's clock
  *          - Revert GPIO to their default state
  * @param hadc: ADC handle pointer
  * @retval None
  */
void HAL_ADC_MspDeInit(ADC_HandleTypeDef *hadc)
{
  static DMA_HandleTypeDef  hdma_adc;
  
  /*##-1- Reset peripherals ##################################################*/
  ADCx_FORCE_RESET();
  ADCx_RELEASE_RESET();

  /*##-2- Disable peripherals and GPIO Clocks ################################*/
  /* De-initialize the ADC3 Channel8 GPIO pin */
  HAL_GPIO_DeInit(ADCx_CHANNEL_GPIO_PORT, ADCx_CHANNEL_PIN);
  
  /*##-3- Disable the DMA Streams ############################################*/
  /* De-Initialize the DMA Stream associate to transmission process */
  HAL_DMA_DeInit(&hdma_adc); 
    
  /*##-4- Disable the NVIC for DMA ###########################################*/
  HAL_NVIC_DisableIRQ(ADCx_DMA_IRQn);
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
