F407的外部触发ADC无法实现

mengheli · 发表于 2016-4-14 11:22:25

目的是为了实现外部给一个信号就转换一组规则组，用的是EXIT_11选做PF11口，接了按键0所在的PE2，希望通过按键来实现外部触发来AD转换，但是无论我的按键却没有反应，始终运行之后都会转换一组（无论我按不按键，有时候还会转换两组）然后就没反应了，是我没启动中断触发AD吗？可是该配置的函数我都配置了才对？
void  Adc_Init(void)
{
  GPIO_InitTypeDef  GPIO_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_InitTypeDef    ADC_InitStructure;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);//ê1ÄüGPIOAê±Öó
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); //ê1ÄüADC1ê±Öó

   //Ïè3õê¼»ˉADC1í¨μà5 IO¿ú
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_4;//ê1ÄüáËADC1μÄ0￡¬1￡¬2í¨μà
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//Ä￡Äaêäèë
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;//2»′øéÏÏÂà-
  GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉ

RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,ENABLE);    //ADC1¸′Î»
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,DISABLE); //¸′Î»½áêø

  ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;//¶àá￠Ä￡ê½
  ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;//á½¸ö2éÑù½×¶ÎÖ®¼äμÄÑó3ù5¸öê±Öó
  ADC_CommonInitStructure.ADC_DMAAccessMode =  ADC_DMAAccessMode_1; //DMAÄ￡ê½¶t
  ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;//Ô¤·ÖÆμ4·ÖÆμ¡￡ADCCLK=PCLK2/4=84/4=21Mhz,ADCê±Öó×îoÃ2»òa3¬1y36Mhz
  ADC_CommonInit(&ADC_CommonInitStructure);//3õê¼»ˉ

  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;//12Î»Ä￡ê½
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;//é¨ÃèÄ￡ê½
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;//¿aÆôá¬Dø×a»»
ADC_InitStructure.ADC_ExternalTrigConvEdge =ADC_ExternalTrigConvEdge_Rising;                            //?????
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_Ext_IT11;                //??exti_11??
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//óò¶ÔÆë
  ADC_InitStructure.ADC_NbrOfConversion = 2;//3¸ö×a»»Ôú1æÔòDòáDÖD ò2¾íêÇÖ»×a»»1æÔòDòáD3
  ADC_Init(ADC1, &ADC_InitStructure);//ADC3õê¼»ˉ

ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_3Cycles);
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_3Cycles);

  ADC_DMACmd(ADC1, ENABLE);
ADC_MultiModeDMARequestAfterLastTransferCmd(ENABLE);
ADC_Cmd(ADC1, ENABLE);//¿aÆôAD×a»»Æ÷
  //ADC_DMACmd(ADC2, ENABLE);
// ADC_Cmd(ADC2, ENABLE);//¿aÆôAD×a»»Æ÷
  //ADC_DMACmd(ADC3, ENABLE);
//ADC_Cmd(ADC3, ENABLE);//¿aÆôAD×a»»Æ÷
EXTIX_Init();

  ADC_SoftwareStartConv(ADC1);
//ADC_SoftwareStartConv(ADC2);
// ADC_SoftwareStartConv(ADC3);
}
void EXTIX_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef  GPIO_InitStructure;
KEY_Init();

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_11;//ê1ÄüáËADC10￡11￡¬¬12í¨μà
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;//Ä￡Äaêäèë
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;//2»′øéÏÏÂà-
  GPIO_Init(GPIOF, &GPIO_InitStructure);//3õê¼»ˉ

RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);//ê1ÄüSYSCFGê±Öó

SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOF, EXTI_PinSource11);//PF11 á¬½óμ½ÖD¶ÏÏß11

  /* ÅäÖÃEXTI_Line0 */
  EXTI_InitStructure.EXTI_Line = EXTI_Line11;//LINE0
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;//ÖD¶ÏêÂ¼t
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //éÏéyÑØ′￥·￠
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;//ê1ÄüLINE0
  EXTI_Init(&EXTI_InitStructure);//ÅäÖÃ

NVIC_InitStructure.NVIC_IRQChannel = ADC_IRQn;//ía2¿ÖD¶Ï0 ????
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;//ÇàÕ¼óÅÏè¼¶0
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;//×óóÅÏè¼¶2
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//ê1Äüía2¿ÖD¶Ïí¨μà
  NVIC_Init(&NVIC_InitStructure);//ÅäÖÃ


}
因为为事件触发，所以不用写中断处理函数。