请教用原子老师的ADC程序没有输出

xuguangyun123

用原子老师的ADC程序改的，我用的是，PA0引脚，对应通道0，测电压：

//PA0 ×÷???????¨??????????                         

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //????????????

GPIO_Init(GPIOA, &GPIO_InitStructure);

ADC_DeInit(ADC1);  //????ADC1,?????è ADC1 ???????????÷???è???±????

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent; //ADC?¤×÷????:ADC1??ADC2?¤×÷??????????

ADC_InitStructure.ADC_ScanConvMode = DISABLE; //????×????¤×÷?????¨??????

ADC_InitStructure.ADC_ContinuousConvMode = DISABLE; //????×????¤×÷??????×???????

ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //×??????í??????????????·?????

ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right; //ADC??????????

ADC_InitStructure.ADC_NbrOfChannel = 1; //???ò???????ò×?????ADC?¨????????

ADC_Init(ADC1, &ADC_InitStructure); //?ù??ADC_InitStruct?????¨???????????????èADCx???????÷   

  ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5 ); //ADC1,ADC?¨??,???ù?±????239.5????  

ADC_Cmd(ADC1, ENABLE); //???????¨??ADC1

ADC_ResetCalibration(ADC1); //??????????×?  

 

while(ADC_GetResetCalibrationStatus(ADC1)); //??????????×??á??

ADC_StartCalibration(ADC1); //????AD??×?

 

while(ADC_GetCalibrationStatus(ADC1)); //??????×??á??

  原理图 如下

附源程序，看了一天，快看哭了。。。

正点原子

直接下载未作修改的代码，测试呢？

xuguangyun123

回复【2楼】正点原子:
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修改了，IO改成PA0，通道改成0，就只读出0来

xuguangyun123

回复【2楼】正点原子:
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不知道为什么就好了。。。

正点原子