STM32F303 OPAMP+ADC需要怎么配置才能使用？

OPAMP_InitTypeDef OPAMP_InitStructure;

        ADC_InitTypeDef ADC_InitStructure;

        ADC_CommonInitTypeDef ADC_CommonInitStructure;

        /* OPAMP Peripheral clock enable */

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);        

        

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_3;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;

  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

  GPIO_Init(GPIOA, &GPIO_InitStructure);

        

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;

        GPIO_Init(GPIOC, &GPIO_InitStructure);

        

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14 | GPIO_Pin_8;

        GPIO_Init(GPIOD, &GPIO_InitStructure);

        

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_10 | GPIO_Pin_10;

        GPIO_Init(GPIOB, &GPIO_InitStructure);

        

        /* OPAMP1 config */

  OPAMP_InitStructure.OPAMP_NonInvertingInput = OPAMP_NonInvertingInput_IO4;

  OPAMP_InitStructure.OPAMP_InvertingInput =  OPAMP_InvertingInput_Vout;

  OPAMP_Init(OPAMP_Selection_OPAMP1, &OPAMP_InitStructure);



  /* Configure OPAMP1 in PGA mode with gain set to 2 */

  //OPAMP_PGAConfig(OPAMP_Selection_OPAMP1, OPAMP_OPAMP_PGAGain_2, OPAMP_PGAConnect_No);



  /* Enable OPAMP1 */

  OPAMP_Cmd(OPAMP_Selection_OPAMP1, ENABLE);

        

        OPAMP_InitStructure.OPAMP_NonInvertingInput = OPAMP_NonInvertingInput_IO1;

        OPAMP_Init(OPAMP_Selection_OPAMP2, &OPAMP_InitStructure);

        //OPAMP_PGAConfig(OPAMP_Selection_OPAMP2, OPAMP_OPAMP_PGAGain_2, OPAMP_PGAConnect_No);

        OPAMP_Cmd(OPAMP_Selection_OPAMP2, ENABLE);

        

        OPAMP_InitStructure.OPAMP_NonInvertingInput = OPAMP_NonInvertingInput_IO4;

        OPAMP_Init(OPAMP_Selection_OPAMP3, &OPAMP_InitStructure);

        //OPAMP_PGAConfig(OPAMP_Selection_OPAMP3, OPAMP_OPAMP_PGAGain_2, OPAMP_PGAConnect_No);

        OPAMP_Cmd(OPAMP_Selection_OPAMP3, ENABLE);

        

        OPAMP_InitStructure.OPAMP_NonInvertingInput = OPAMP_NonInvertingInput_IO2;

        OPAMP_Init(OPAMP_Selection_OPAMP4, &OPAMP_InitStructure);

        //OPAMP_PGAConfig(OPAMP_Selection_OPAMP4, OPAMP_OPAMP_PGAGain_2, OPAMP_PGAConnect_No);

        OPAMP_Cmd(OPAMP_Selection_OPAMP4, ENABLE);

        

        /* Configure the ADC clock */

  RCC_ADCCLKConfig(RCC_ADC12PLLCLK_Div1);  

        RCC_ADCCLKConfig(RCC_ADC34PLLCLK_Div1);  

  /* Enable ADC clock */

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC12, ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ADC34, ENABLE);

        

        /* ADC DMA Configuration */

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);

        

        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(ADC1->DR));

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)(AdcConvertedValues.u16AdcBuff);

  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

  DMA_InitStructure.DMA_BufferSize = 1;

  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;

  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;

  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;

  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;

  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

  DMA_Init(DMA1_Channel1, &DMA_InitStructure); 

        

        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(ADC2->DR));

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&(AdcConvertedValues.u16AdcBuff[1]);

        DMA_Init(DMA2_Channel1, &DMA_InitStructure); 

        

        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(ADC3->DR));

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&(AdcConvertedValues.u16AdcBuff[2]);        

        DMA_Init(DMA2_Channel5, &DMA_InitStructure);

        

        DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)(&(ADC4->DR));

  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&(AdcConvertedValues.u16AdcBuff[3]);

        DMA_Init(DMA2_Channel2, &DMA_InitStructure); 



        ADC_StructInit(&ADC_InitStructure);



  /* ADC Calibration procedure */

  ADC_VoltageRegulatorCmd(ADC1, ENABLE);

  ADC_VoltageRegulatorCmd(ADC2, ENABLE);

        ADC_VoltageRegulatorCmd(ADC3, ENABLE);

        ADC_VoltageRegulatorCmd(ADC4, ENABLE);

        DelayUs(1000);

        

        ADC_SelectCalibrationMode(ADC1, ADC_CalibrationMode_Single);

  ADC_StartCalibration(ADC1);



  ADC_SelectCalibrationMode(ADC2, ADC_CalibrationMode_Single);

  ADC_StartCalibration(ADC2);

        

        ADC_SelectCalibrationMode(ADC3, ADC_CalibrationMode_Single);

  ADC_StartCalibration(ADC3);

        

        ADC_SelectCalibrationMode(ADC4, ADC_CalibrationMode_Single);

  ADC_StartCalibration(ADC4);

  

  while(ADC_GetCalibrationStatus(ADC1) != RESET );

  calibration_value_1 = ADC_GetCalibrationValue(ADC1);



  while(ADC_GetCalibrationStatus(ADC2) != RESET );

  calibration_value_2 = ADC_GetCalibrationValue(ADC2);

        

        while(ADC_GetCalibrationStatus(ADC3) != RESET );

  calibration_value_3 = ADC_GetCalibrationValue(ADC3);

        

        while(ADC_GetCalibrationStatus(ADC4) != RESET );

  calibration_value_4 = ADC_GetCalibrationValue(ADC4);



        ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;

  ADC_CommonInitStructure.ADC_Clock = ADC_Clock_AsynClkMode;                    

  ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_1;            

  ADC_CommonInitStructure.ADC_DMAMode = ADC_DMAMode_Circular;                  

  ADC_CommonInitStructure.ADC_TwoSamplingDelay = 10;         

  

  ADC_CommonInit(ADC1, &ADC_CommonInitStructure);

        ADC_CommonInit(ADC2, &ADC_CommonInitStructure);

        ADC_CommonInit(ADC3, &ADC_CommonInitStructure);

        ADC_CommonInit(ADC4, &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 = 1;

  ADC_Init(ADC1, &ADC_InitStructure);

        ADC_Init(ADC2, &ADC_InitStructure);

        ADC_Init(ADC3, &ADC_InitStructure);

        ADC_Init(ADC4, &ADC_InitStructure);

        

        ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 1, ADC_SampleTime_7Cycles5);

        ADC_RegularChannelConfig(ADC2, ADC_Channel_3, 1, ADC_SampleTime_7Cycles5);

        ADC_RegularChannelConfig(ADC3, ADC_Channel_1, 1, ADC_SampleTime_7Cycles5);

        ADC_RegularChannelConfig(ADC4, ADC_Channel_3, 1, ADC_SampleTime_7Cycles5);

        

        

        ADC_DMAConfig(ADC1, ADC_DMAMode_Circular);  

        ADC_DMAConfig(ADC2, ADC_DMAMode_Circular); 

        ADC_DMAConfig(ADC3, ADC_DMAMode_Circular);  

        ADC_DMAConfig(ADC4, ADC_DMAMode_Circular); 

  ADC_DMACmd(ADC1, ENABLE);

        ADC_DMACmd(ADC2, ENABLE);

        ADC_DMACmd(ADC3, ENABLE);

        ADC_DMACmd(ADC4, ENABLE);

        

        ADC_Cmd(ADC1, ENABLE);

        ADC_Cmd(ADC2, ENABLE);

        ADC_Cmd(ADC3, ENABLE);

        ADC_Cmd(ADC4, ENABLE);

        

        

        

  while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_RDY));  

  while(!ADC_GetFlagStatus(ADC2, ADC_FLAG_RDY));

        while(!ADC_GetFlagStatus(ADC3, ADC_FLAG_RDY));

        while(!ADC_GetFlagStatus(ADC4, ADC_FLAG_RDY));

  

  /* Enable the DMA channel */

  DMA_Cmd(DMA1_Channel1, ENABLE);

        DMA_Cmd(DMA2_Channel1, ENABLE);

        DMA_Cmd(DMA2_Channel2, ENABLE);

        DMA_Cmd(DMA2_Channel5, ENABLE);

  

  ADC_StartConversion(ADC1); 

        ADC_StartConversion(ADC2);

        ADC_StartConversion(ADC3); 

        ADC_StartConversion(ADC4);