求助，STM32外部触发ADC转换的程序问题。

ljy888b8cg

搜了很多资料啊，都没找到相关的例程，我用的是F103ZET6。我想通过按键触发ADC1采样，现在的困惑是我配置好了ADC让它外部触发等，如何和按键联系起来呢？学了没多久，麻烦了。。。

ljy888b8cg

噢我知道了要配置EXTI吧

ljy888b8cg

void ADC1Configuration1(void)
{    ADC_InitTypeDef  ADC_InitStructure;
      /* ADC1 Configuration ------------------------------------------------------*/
      ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;////ADC¹¤×÷ģʽ:¶ÀÁ¢Ä£Ê½
      ADC_InitStructure.ADC_ScanConvMode = DISABLE;//ADµ¥Í¨µÀģʽ
      ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//Á¬Ðøת»¯
      ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_Ext_IT11_TIM8_TRGO;//ÍⲿÖжÏÏß11´¥·¢-£¿
      ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//ÓÒ¶ÔÆë
      ADC_InitStructure.ADC_NbrOfChannel = 1;//µ¥Í¨µÀ
      ADC_Init(ADC1, &ADC_InitStructure);//¸ù¾ÝÖ¸¶¨µÄ²ÎÊý³õʼ»¯ÍâÉèADCxÆ÷

   //   /* ADC1 regular channel8 configuration */


     ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_239Cycles5);//Ñ¡ÔñͨµÀ8,²ÉÑùʱ¼äΪ1.5ÖÜÆÚ
   
      /* Configure high and low analog watchdog thresholds */
      ADC_AnalogWatchdogThresholdsConfig(ADC1, 0x0B00, 0x0300);//Ä£Äâ¿´ÃŹ·µÄ¸ß¡¢µÍãÐÖµ
      /* Configure channel8 as the single analog watchdog guarded channel */
      ADC_AnalogWatchdogSingleChannelConfig(ADC1, ADC_Channel_8);//channe8±»ÉèÖÃÄ£Äâ¿´ÃŹ·
      /* Enable analog watchdog on one regular channel */
      ADC_AnalogWatchdogCmd(ADC1, ADC_AnalogWatchdog_SingleRegEnable);//µ¥¸ö¹æÔòͨµÀÉÏÉèÖÃÄ£Äâ¿´ÃŹ·

       /* Disable AWD,EOC interupt */
     ADC_ITConfig(ADC1, ADC_IT_EOC | ADC_IT_AWD , DISABLE);//ÖжÏÆÁ±Î¹Ø±Õ
   
     /* Enable DMA Convert */
     ADC_DMACmd(ADC1,ENABLE);//ʹÄÜDMAÇëÇó

      /* Enable ADC1 */
      ADC_Cmd(ADC1, ENABLE);//ʹÄÜADC


      /* Enable ADC1 reset calibaration register */   
      ADC_ResetCalibration(ADC1);//¿ªÆô¸´Î»Ð£×¼
      /* Check the end of ADC1 reset calibration register */
      while(ADC_GetResetCalibrationStatus(ADC1));//µÈ´ý¸´Î»Ð£×¼½áÊø

      /* Start ADC1 calibaration */
      ADC_StartCalibration(ADC1);//¿ªÆôADУ׼
      /* Check the end of ADC1 calibration */
      while(ADC_GetCalibrationStatus(ADC1));//µÈ´ýУ׼½áÊø

      /* Start ADC1 Software Conversion */
      //ADC_SoftwareStartConvCmd(ADC1, ENABLE);//ʹÄÜADC1µÄÈí¼þת»»Æô¶¯
      ADC_ExternalTrigInjectedConvCmd(ADC1, ENABLE);//ʹÄÜADC1µÄÍⲿת»»Æô¶¯

}
void EXIT_Configuration(void)
{
    GPIO_EXTILineConfig(GPIO_PortSourceGPIOC,GPIO_PinSource13);//ÉèÖÃÓ³Éä¹ØϵC13

EXTI_InitTypeDef EXTI_InitStructure;
  /* Configure Key Button EXTI Line to generate an interrupt on falling edge */  
  EXTI_InitStructure.EXTI_Line = EXTI_Line11;//Íⲿ11Ïß´¥·¢
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
}


请问各位我的C13口是按键 我这样配置了之后按下这个键就可以开启AD转换了吗？感激不尽

ljy888b8cg

因为开发板USB供电的接口焊盘掉下来了 所以暂时验证不了

liaoliaoliao

楼主 后来搞定了没