STM32 ADC Modus

/* Configure the ADC clock */

  RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div2);

  /* Enable ADC1 clock */

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);

  /* Setup SysTick Timer for 1 µsec interrupts  */

  if (SysTick_Config(SystemCoreClock / 10000))

  {

    /* Capture error */

    while (1)

    {}

  }

  /* ADC Channel configuration */

   /* GPIOC Periph clock enable */

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);

  /* Configure ADC Channel7 as analog input */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 ;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;

  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;

  GPIO_Init(GPIOC, &GPIO_InitStructure);

  ADC_StructInit(&ADC_InitStructure);

  /* Calibration procedure */

  ADC_VoltageRegulatorCmd(ADC1, ENABLE);

  /* Insert delay equal to 10 µs */

 // Delay(10);

  ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);

  ADC_StartCalibration(ADC1);

  while(ADC_GetCalibrationStatus(ADC1) != RESET );

  calibration_value = ADC_GetCalibrationValue(ADC1);

  ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;

 /* ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;

  ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;

  ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_OneShot;

  ADC_CommonInitStructure.ADC_TwoSamplingDelay = 9;*/

  ADC_CommonInit(ADC1, &ADC_CommonInitStructure);

  ADC_InitStructure.ADC_ContinuousConvMode = ADC_ContinuousConvMode_Enable;

  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;

  ADC_InitStructure.ADC_ExternalTrigConvEvent = ADC_ExternalTrigConvEvent_0;

  ADC_InitStructure.ADC_ExternalTrigEventEdge = ADC_ExternalTrigEventEdge_None;

  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

  ADC_InitStructure.ADC_OverrunMode = ADC_OverrunMode_Disable;

  ADC_InitStructure.ADC_AutoInjMode = ADC_AutoInjec_Disable;

  ADC_InitStructure.ADC_NbrOfRegChannel = 2;

  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel6 configuration */

  ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 1, ADC_SampleTime_19Cycles5);

  ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 2, ADC_SampleTime_19Cycles5);

  /* Enable ADC1 */

  ADC_Cmd(ADC1, ENABLE);

  /* wait for ADRDY */

  while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));

  /* Start ADC1 Software Conversion */

  ADC_StartConversion(ADC1);

 /* Infinite loop */

 while (1)

  {

    /* Test EOC flag */

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

    /* Get ADC1 converted data */

    ADC1ConvertedValue =ADC_GetConversionValue(ADC1);

    /* Compute the voltage */

    ADC1ConvertedVoltage = (ADC1ConvertedValue *3000)/0xFFF;

  }

}