STM32 ADC注入通道组转换问题

千牛卫

各位大神：我配置ADC规则通道转换正常，但是注入通道转换一直没有数据，请求给予援助：
u16 RxDate[2];//规则通道接收数组

void STM32_ADC_Init(void)
{
 GPIO_InitTypeDef GPIO_InitStructure;
 ADC_InitTypeDef ADC_InitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);



RCC_ADCCLKConfig(RCC_PCLK2_Div6);
ADC_RegularChannelConfig(ADC1,ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
ADC_RegularChannelConfig(ADC1,ADC_Channel_1, 2, ADC_SampleTime_239Cycles5);


ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_InitStructure.ADC_ScanConvMode = ENABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConv =   ADC_ExternalTrigConv_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfChannel = 2;
ADC_Init(ADC1,&ADC_InitStructure);

ADC_DMACmd(ADC1,ENABLE);
  ADC_Cmd(ADC1,ENABLE);
  ADC_ResetCalibration(ADC1);
  while(ADC_GetResetCalibrationStatus(ADC1));
ADC_StartCalibration(ADC1);
while(ADC_GetCalibrationStatus(ADC1));
ADC_SoftwareStartConvCmd(ADC1,ENABLE);
//ADC_ExternalTrigConvCmd(ADC1,ENABLE);

}

void STM32_DMA_Init(void)//DMA请求正常
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1,ENABLE); 

DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)&ADC1->DR;
DMA_InitStructure.DMA_MemoryBaseAddr = (u32)RxDate;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 2;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
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_Cmd(DMA1_Channel1,ENABLE);

}

void InJect_Init(void)//注入通道不正常，没有转换
{
 GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
 GPIO_Init(GPIOA, &GPIO_InitStructure);

    ADC_InjectedSequencerLengthConfig(ADC1, 1);
 
ADC_InjectedChannelConfig(ADC1,ADC_Channel_2, 1, ADC_SampleTime_239Cycles5);
   //ADC_InjectedDiscModeCmd(ADC1,1);
   ADC_SoftwareStartInjectedConvCmd(ADC1,ENABLE);
   ADC_AutoInjectedConvCmd(ADC1,ENABLE);
  

}

//主函数
InJect_Init();
  while(1)
{
ADC_SoftwareStartInjectedConvCmd(ADC1,ENABLE);
delay_ms(20);

   //RxDate[0] = ADC_GetConversionValue(ADC1);
printf("\r\n is= %x ", RxDate[0]);
printf("\r\n is= %x ", RxDate[1]);
   
    InjectedDataValue = ADC_GetInjectedConversionValue(ADC1,ADC_InjectedChannel_2);
printf("\r\n is= %x ",  InjectedDataValue);
delay_ms(1000);
}
 }

请求支援！谢谢

千牛卫

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC1工作在独立模式，和ADC2不配合
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;   //单通道模式，不扫描
  ADC_InitStructure.ADC_ContinuousConvMode =ENABLE;  //连续循环模式
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //数据右对齐

  ADC_Init(ADC1, &ADC_InitStructure);

/*********** ADC1 注入通道的配置！ ************/ 
  ADC_ExternalTrigInjectedConvConfig(ADC1,ADC_ExternalTrigInjecConv_None); //外部触发源为软件触发
  ADC_InjectedSequencerLengthConfig(ADC1, 1);
  ADC_InjectedChannelConfig(ADC1,ADC_Channel_9,1,ADC_SampleTime_28Cycles5); 
  ADC_SetInjectedOffset(ADC1,ADC_InjectedChannel_1,0);

ADC配置是上面这样的。

如果改为规则组（只转换一个通道），主程序只要这样就可以循环转换：
/**************启动ADC1规则组的转换***************************/
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);  //开始转换               
  while (1)
  {
  ************
  }
 而在注入组，则要这样才能循环转换：
 while (1)
  { 
    ADC_SoftwareStartInjectedConvCmd(ADC1, ENABLE); 
    *********
 }

sunboyYB

我也打算用遮光注入通道  但是我是一个用规则 一个用注入 都是ADC1的 可以这样用吗？