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標(biāo)題: STM32L152非DMA方式多通道ADC [打印本頁(yè)]

作者: xiaopin 時(shí)間: 2015-7-21 01:03
標(biāo)題: STM32L152非DMA方式多通道ADC
void ADC_InitConfiguration(void)

{

  ADC_InitTypeDef ADC_InitStructure;

  RCC_HSICmd(ENABLE);

  while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET)

  {}

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

  ADC_DeInit(ADC1);

  ADC_StructInit(&ADC_InitStructure);

  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;

  ADC_InitStructure.ADC_ScanConvMode = DISABLE;

  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;

  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

  ADC_InitStructure.ADC_NbrOfConversion = 1;

  ADC_Init(ADC1, &ADC_InitStructure);

// ADC_RegularChannelConfig(ADC1, BUS_VOL_CHN, 1, ADC_SampleTime_192Cycles);

  ADC_DelaySelectionConfig(ADC1, ADC_DelayLength_Freeze);

  ADC_PowerDownCmd(ADC1, ADC_PowerDown_Idle_Delay, ENABLE);

  ADC_Cmd(ADC1, ENABLE);

  while (ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET)

  {

  }

}

UINT GetADCValue(void)

{

unchar i;

for(i=0; i<5; i++)

{

      AD_Value[i] = 0x0FFF;

      switch (i)

      {

         case 0: ADC_RegularChannelConfig(ADC1, BUS_VOL_CHN, 1, ADC_SampleTime_192Cycles); break;

         case 1: ADC_RegularChannelConfig(ADC1, CURRENT_CH1_CHN, 1, ADC_SampleTime_192Cycles); break;

         case 2: ADC_RegularChannelConfig(ADC1, CURRENT_CH2_CHN, 1, ADC_SampleTime_192Cycles); break;

         case 3: ADC_RegularChannelConfig(ADC1, CURRENT_CH3_CHN, 1, ADC_SampleTime_192Cycles); break;

case 4: ADC_RegularChannelConfig(ADC1, CURRENT_CH4_CHN, 1, ADC_SampleTime_192Cycles); break;

      }

      // ?????ADC_Cmd()

      ADC_Cmd(ADC1, ENABLE);

      ADC_TempSensorVrefintCmd(ENABLE);

      ADC_SoftwareStartConv(ADC1);

      // ????????

      while (ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET)

      AD_Value[i] = ADC_GetConversionValue(ADC1);

      ADC_ClearFlag(ADC1, ADC_FLAG_EOC);

      ADC_SoftwareStartConv(ADC1);

      ADC_Cmd(ADC1, DISABLE);

}

}

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