lemon-pepper-stepper/firmware/lib/currentsense/adc.cpp

#include "adc.h"

ADC_HandleTypeDef hadc1;
ADC_HandleTypeDef hadc2;
DMA_HandleTypeDef hdma_adc1;
DMA_HandleTypeDef hdma_adc2;

uint32_t HAL_RCC_ADC12_CLK_ENABLED = 0;

void MX_ADC1_Init(void)
{
  ADC_MultiModeTypeDef multimode = {0};
  ADC_ChannelConfTypeDef sConfig = {0};

  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV16;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.GainCompensation = 0;
  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc1.Init.LowPowerAutoWait = DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.NbrOfConversion = 2;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T2_TRGO;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
  hadc1.Init.DMAContinuousRequests = ENABLE;
  hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc1.Init.OversamplingMode = DISABLE;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC1 Init fail.");

  multimode.Mode = ADC_MODE_INDEPENDENT;
  if (HAL_ADCEx_MultiModeConfigChannel(&hadc1, &multimode) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC1 multimode configuration fail.");

  sConfig.Channel = ADC_CHANNEL_VOPAMP1;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_1;
  sConfig.Offset = 0x7FF;
  sConfig.OffsetSaturation = ENABLE;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC OPAMP1 init failed!");

  sConfig.Channel = ADC_CHANNEL_TEMPSENSOR_ADC1;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC temp init failed!");
}

void MX_ADC2_Init(void)
{
  ADC_ChannelConfTypeDef sConfig = {0};

  hadc2.Instance = ADC2;
  hadc2.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV16;
  hadc2.Init.Resolution = ADC_RESOLUTION_12B;
  hadc2.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc2.Init.GainCompensation = 0;
  hadc2.Init.ScanConvMode = ADC_SCAN_ENABLE;
  hadc2.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc2.Init.LowPowerAutoWait = DISABLE;
  hadc2.Init.ContinuousConvMode = DISABLE;
  hadc2.Init.NbrOfConversion = 2;
  hadc2.Init.DiscontinuousConvMode = DISABLE;
  hadc2.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T2_TRGO;
  hadc2.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
  hadc2.Init.DMAContinuousRequests = ENABLE;
  hadc2.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc2.Init.OversamplingMode = DISABLE;
  if (HAL_ADC_Init(&hadc2) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC2 init failed!");

  sConfig.Channel = ADC_CHANNEL_VOPAMP2;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_1;
  sConfig.Offset = 0x7FF;
  sConfig.OffsetSaturation = ENABLE;
  if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC OPAMP2 init failed!");

  sConfig.Channel = ADC_CHANNEL_VOPAMP3_ADC2;
  sConfig.Rank = ADC_REGULAR_RANK_2;
  if (HAL_ADC_ConfigChannel(&hadc2, &sConfig) != HAL_OK)
    SIMPLEFOC_DEBUG("HAL ADC OPAMP3 init failed!");
}

void ADC_DMA_Init(ADC_HandleTypeDef* adcHandle)
{
  HAL_RCC_ADC12_CLK_ENABLED++;
  if(HAL_RCC_ADC12_CLK_ENABLED==1){
    __HAL_RCC_ADC12_CLK_ENABLE();
  }

  if(adcHandle->Instance==ADC1)
  {
    /* ADC1 DMA Init */
    /* ADC1 Init */
    hdma_adc1.Instance = DMA1_Channel1;
    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_LOW;
    HAL_DMA_DeInit(&hdma_adc1);
    if (HAL_DMA_Init(&hdma_adc1) != HAL_OK)
      SIMPLEFOC_DEBUG("HAL error enabling DMA1 channel 1.");

    __HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc1);
  }
  else if(adcHandle->Instance==ADC2)
  {
    /* ADC2 DMA Init */
    /* ADC2 Init */
    hdma_adc2.Instance = DMA1_Channel2;
    hdma_adc2.Init.Request = DMA_REQUEST_ADC2;
    hdma_adc2.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_adc2.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_adc2.Init.MemInc = DMA_MINC_ENABLE;
    hdma_adc2.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
    hdma_adc2.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
    hdma_adc2.Init.Mode = DMA_CIRCULAR;
    hdma_adc2.Init.Priority = DMA_PRIORITY_LOW;
    HAL_DMA_DeInit(&hdma_adc2);
    if (HAL_DMA_Init(&hdma_adc2) != HAL_OK)
      SIMPLEFOC_DEBUG("HAL error enabling DMA1 channel 2.");

    __HAL_LINKDMA(adcHandle,DMA_Handle,hdma_adc2);
  }
}

// void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
// {

//   if(adcHandle->Instance==ADC1)
//   {
//     HAL_RCC_ADC12_CLK_ENABLED--;
//     if(HAL_RCC_ADC12_CLK_ENABLED==0){
//       __HAL_RCC_ADC12_CLK_DISABLE();
//     }

//     HAL_DMA_DeInit(adcHandle->DMA_Handle);
//   }
//   else if(adcHandle->Instance==ADC2)
//   {
//     HAL_RCC_ADC12_CLK_ENABLED--;
//     if(HAL_RCC_ADC12_CLK_ENABLED==0){
//       __HAL_RCC_ADC12_CLK_DISABLE();
//     }

//     HAL_DMA_DeInit(adcHandle->DMA_Handle);
//   }
// }