PB0,PB1,PC5作为ADC1的8、9、15通道，为什么不行？下列程序配置是否有问题，请教下

shxy010411 · 发表于 2015-1-28 14:31:10

void Adc_Init(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB |RCC_APB2Periph_ADC1 , ENABLE ); //????ADC1?¨???±??

RCC_ADCCLKConfig(RCC_PCLK2_Div6); //?è??ADC·????ò×?6 72M/6=12,ADC×??ó?±??????????14M

//PB0\1 ×÷???????¨??????????
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;  //????????????
GPIO_Init(GPIOB, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;  //????????????
GPIO_Init(GPIOC, &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_Cmd(ADC1, ENABLE); //???????¨??ADC1

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

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

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

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

// ADC_SoftwareStartConvCmd(ADC1, ENABLE); //???????¨??ADC1???í??×???????????

}
//????ADC??
//ch:?¨???? 0~3
u16 Get_Adc(u8 ch)
{
//?è?????¨ADC?????ò×é?¨?????????ò???????ù?±??
ADC_RegularChannelConfig(ADC1, ch, 1, ADC_SampleTime_239Cycles5 ); //ADC1,ADC?¨??,???ù?±????239.5????

ADC_SoftwareStartConvCmd(ADC1, ENABLE);  //???????¨??ADC1???í??×???????????

while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC ));//????×????á??

return ADC_GetConversionValue(ADC1); //·???×??ü????ADC1???ò×é??×????á??
}

u16 Get_Adc_Average(u8 ch,u8 times)
{
u32 temp_val=0;
u8 t;
for(t=0;t<times;t++)
{
temp_val+=Get_Adc(ch);
delay_ms(5);
}
return temp_val/times;
}