32blit-stm32/Src/adc.c

/**
  ******************************************************************************
  * File Name          : ADC.c
  * Description        : This file provides code for the configuration
  *                      of the ADC instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under Ultimate Liberty license
  * SLA0044, the "License"; You may not use this file except in compliance with
  * the License. You may obtain a copy of the License at:
  *                             www.st.com/SLA0044
  *
  ******************************************************************************
  */

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

#include "gpio_defs.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

ADC_HandleTypeDef hadc1;
ADC_HandleTypeDef hadc3;
DMA_HandleTypeDef hdma_adc1;
DMA_HandleTypeDef hdma_adc3;

/* ADC1 init function */
void MX_ADC1_Init(void)
{
  ADC_MultiModeTypeDef multimode = {0};
  ADC_ChannelConfTypeDef sConfig = {0};

  /** Common config
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4;
  hadc1.Init.Resolution = ADC_RESOLUTION_16B;
  hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;
  hadc1.Init.LowPowerAutoWait = DISABLE;
  hadc1.Init.ContinuousConvMode = ENABLE;
  hadc1.Init.NbrOfConversion = 2;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
  hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
  hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
  hadc1.Init.OversamplingMode = ENABLE;
  hadc1.Init.Oversampling.Ratio = 256;  // Number of ADC samples to be summed together
  hadc1.Init.Oversampling.RightBitShift = ADC_RIGHTBITSHIFT_8; // Right bit shift (division effectively) for resulting ADC sum
  hadc1.Init.Oversampling.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
  hadc1.Init.Oversampling.OversamplingStopReset = ADC_REGOVERSAMPLING_CONTINUED_MODE;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure the ADC multi-mode
  */
  multimode.Mode = ADC_MODE_INDEPENDENT;
  if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_4;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_32CYCLES_5;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_10;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }

}
/* ADC3 init function */
void MX_ADC3_Init(void)
{
  ADC_ChannelConfTypeDef sConfig = {0};

  /** Common config
  */
  hadc3.Instance = ADC3;
  hadc3.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV4;
  hadc3.Init.Resolution = ADC_RESOLUTION_16B;
  hadc3.Init.ScanConvMode = ADC_SCAN_ENABLE;
  hadc3.Init.EOCSelection = ADC_EOC_SEQ_CONV;
  hadc3.Init.LowPowerAutoWait = DISABLE;
  hadc3.Init.ContinuousConvMode = ENABLE;
  hadc3.Init.NbrOfConversion = 4;
  hadc3.Init.DiscontinuousConvMode = DISABLE;
  hadc3.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc3.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc3.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
  hadc3.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
  hadc3.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
  hadc3.Init.OversamplingMode = ENABLE;
  hadc3.Init.Oversampling.Ratio = 256;  // Number of ADC samples to be summed together
  hadc3.Init.Oversampling.RightBitShift = ADC_RIGHTBITSHIFT_8; // Right bit shift (division effectively) for resulting ADC sum
  hadc3.Init.Oversampling.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
  hadc3.Init.Oversampling.OversamplingStopReset = ADC_REGOVERSAMPLING_CONTINUED_MODE;
  if (HAL_ADC_Init(&hadc3) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_11;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_0;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_1;
  sConfig.Rank = ADC_REGULAR_RANK_3;
  if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /** Configure Regular Channel
   * Reading ADC channel twice, just to make sure
   * I kid. This is actually here because the DMA transfer is circular,
   * and 3 readings into a 32-sample buffer means we have a phase problem.
   * Adding this reading will ensure our 3 ADC readings are always left-aligned.
   * TODO: There must be a sensible way to fix this.
  */
  sConfig.Channel = ADC_CHANNEL_1;
  sConfig.Rank = ADC_REGULAR_RANK_4;
  if (HAL_ADC_ConfigChannel(&hadc3, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
}

void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspInit 0 */

  /* USER CODE END ADC1_MspInit 0 */
    /* ADC1 clock enable */
    __HAL_RCC_ADC12_CLK_ENABLE();

    __HAL_RCC_GPIOC_CLK_ENABLE();


    /* ADC1 DMA Init */
    /* ADC1 Init */
    hdma_adc1.Instance = DMA1_Stream0;
    hdma_adc1.Init.Request = DMA_REQUEST_ADC1;
    hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;
    hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
    hdma_adc1.Init.Mode = DMA_CIRCULAR;
    hdma_adc1.Init.Priority = DMA_PRIORITY_MEDIUM;
    hdma_adc1.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
    if (HAL_DMA_Init(&hdma_adc1) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc1);

    /* ADC1 interrupt Init */
    HAL_NVIC_SetPriority(ADC_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(ADC_IRQn);
  /* USER CODE BEGIN ADC1_MspInit 1 */

  /* USER CODE END ADC1_MspInit 1 */
  }
  else if(adcHandle->Instance==ADC3)
  {
  /* USER CODE BEGIN ADC3_MspInit 0 */

  /* USER CODE END ADC3_MspInit 0 */
    /* ADC3 clock enable */
    __HAL_RCC_ADC3_CLK_ENABLE();

    __HAL_RCC_GPIOC_CLK_ENABLE();
    /**ADC3 GPIO Configuration
    PC1     ------> ADC3_INP11
    PC2_C     ------> ADC3_INP0
    PC3_C     ------> ADC3_INP1
    */

    HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PC2, SYSCFG_SWITCH_PC2_OPEN);

    HAL_SYSCFG_AnalogSwitchConfig(SYSCFG_SWITCH_PC3, SYSCFG_SWITCH_PC3_OPEN);

    /* ADC3 DMA Init */
    /* ADC3 Init */
    hdma_adc3.Instance = DMA1_Stream1;
    hdma_adc3.Init.Request = DMA_REQUEST_ADC3;
    hdma_adc3.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_adc3.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_adc3.Init.MemInc = DMA_MINC_ENABLE;
    hdma_adc3.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    hdma_adc3.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
    hdma_adc3.Init.Mode = DMA_CIRCULAR;
    hdma_adc3.Init.Priority = DMA_PRIORITY_MEDIUM;
    hdma_adc3.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
    if (HAL_DMA_Init(&hdma_adc3) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc3);

    /* ADC3 interrupt Init */
    HAL_NVIC_SetPriority(ADC3_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(ADC3_IRQn);
  /* USER CODE BEGIN ADC3_MspInit 1 */

  /* USER CODE END ADC3_MspInit 1 */
  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{

  if(adcHandle->Instance==ADC1)
  {
  /* USER CODE BEGIN ADC1_MspDeInit 0 */

  /* USER CODE END ADC1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC12_CLK_DISABLE();

    /**ADC1 GPIO Configuration
    PC0     ------> ADC1_INP10
    PC4     ------> ADC1_INP4
    */
    HAL_GPIO_DeInit(GPIOC, JOYSTICK_Y_Pin|JOYSTICK_X_Pin);

    /* ADC1 DMA DeInit */
    HAL_DMA_DeInit(adcHandle->DMA_Handle);

    /* ADC1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(ADC_IRQn);
  /* USER CODE BEGIN ADC1_MspDeInit 1 */

  /* USER CODE END ADC1_MspDeInit 1 */
  }
  else if(adcHandle->Instance==ADC3)
  {
  /* USER CODE BEGIN ADC3_MspDeInit 0 */

  /* USER CODE END ADC3_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC3_CLK_DISABLE();

    /**ADC3 GPIO Configuration
    PC1     ------> ADC3_INP11
    PC2_C     ------> ADC3_INP0
    PC3_C     ------> ADC3_INP1
    */
    HAL_GPIO_DeInit(USER_LEFT1_GPIO_Port, USER_LEFT1_Pin);

    /* ADC3 DMA DeInit */
    HAL_DMA_DeInit(adcHandle->DMA_Handle);

    /* ADC3 interrupt Deinit */
    HAL_NVIC_DisableIRQ(ADC3_IRQn);
  /* USER CODE BEGIN ADC3_MspDeInit 1 */

  /* USER CODE END ADC3_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

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