STM32L073 AD转换

song-407678 提问时间：2017-5-18 21:04 /

大神们好，我刚接触STM32L0系列芯片，现在搞AD转换，用HAL库，可以正常转换，但是转换时间太长了，效率很低。不知道是我程序有问题还是什么，现在想换寄存器写，不用库，用寄存器现在很没头绪，望大神们指点，最好给点例程。谢谢。下面是我用库写的
void vInitAdc(void)
{

  AdcHandle.Instance = ADC1;

  AdcHandle.Init.OversamplingMode    = DISABLE;

  AdcHandle.Init.ClockPrescaler       = ADC_CLOCK_SYNC_PCLK_DIV1;
  AdcHandle.Init.LowPowerAutoPowerOff  = DISABLE;
  AdcHandle.Init.LowPowerFrequencyMode = ENABLE;
  AdcHandle.Init.LowPowerAutoWait    = DISABLE;

  AdcHandle.Init.Resolution          = ADC_RESOLUTION_12B;
  AdcHandle.Init.SamplingTime       = ADC_SAMPLETIME_7CYCLES_5;
  AdcHandle.Init.ScanConvMode       = ADC_SCAN_DIRECTION_FORWARD;
  AdcHandle.Init.DataAlign          = ADC_DATAALIGN_RIGHT;
  AdcHandle.Init.ContinuousConvMode = DISABLE;//ENABLE;
  AdcHandle.Init.DiscontinuousConvMode = DISABLE;
  AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_NONE;
  AdcHandle.Init.EOCSelection       = ADC_EOC_SINGLE_CONV;
  AdcHandle.Init.DMAContinuousRequests = DISABLE;

  /* Initialize ADC peripheral according to the passed parameters */
  if (HAL_ADC_Init(&AdcHandle) != HAL_OK)
  {
;//Error_Handler();
  }

  /* ### - 2 - Start calibration ############################################ */
  if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_SINGLE_ENDED) != HAL_OK)
  {
;//Error_Handler();
  }
}

unsigned int uiADC_Result(unsigned char ucChannel)
{
unsigned char i;
unsigned int uiMaxResult = 0, uiMinResult = 0xFFFF;
unsigned int j,uiResult = 0;
   ADC_ChannelConfTypeDef    sConfig;
   ADC1->CHSELR=0;
   ADC1->CHSELR=ucChannel;//sConfig.Channel;
   HAL_ADC_Start(&AdcHandle);

   for (i = 0;i < 6;i++)
{
   HAL_ADC_PollForConversion(&AdcHandle, 10);
   /* Check if the continous conversion of regular channel is finished */
   if ((HAL_ADC_GetState(&AdcHandle) & HAL_ADC_STATE_REG_EOC) == HAL_ADC_STATE_REG_EOC)
   {
j = HAL_ADC_GetValue(&AdcHandle);
   }
   if (j > uiMaxResult)
{
uiMaxResult = j;
}
if (j < uiMinResult)
{
uiMinResult = j;
}
uiResult += j;
   }

   uiResult -= uiMaxResult;
uiResult -= uiMinResult;
   uiResult /= 4;
return uiResult;
}