AD采到的值不对

杀手天使

[mw_shl_code=c,true] #include "adc.h" #include "delay.h" int normal; float inpid=0.0; void Adc_Init(void) { ADC_InitTypeDef ADC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC |RCC_APB2Periph_ADC1,ENABLE ); //????ADC1?¨???±?? RCC_ADCCLKConfig(RCC_PCLK2_Div6); //?è??ADC·????ò×?6 72M/6=12,ADC×??ó?±??????????14M //PA1 ×÷???????¨?????????? GPIO_InitStructure.GPIO_Pin =GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|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; } void adc_pid(void) { int i; u8 temp1[6]={35,75,115,135,175,215}; //u8 temp1[5]={35,75,115,175,215}; //u8 temp2[6]={0,50,100,150,200,250}; u16 s[6]={0}; float temp,sum=0.0,adc[6]; temp=Get_Adc_Average(ADC_Channel_10,10);//???®?????ù adc[0]=(float)temp*(3.3/4096); printf("\nADC[0]:%f\n",adc[0]); temp=Get_Adc_Average(ADC_Channel_11,10); adc[1]=(float)temp*(3.3/4096); //adc[1]=temp; printf("\nADC[1]:%f\n",adc[1]); temp=Get_Adc_Average(ADC_Channel_12,10); adc[2]=(float)temp*(3.3/4096); //adc[2]=temp; printf("\nADC[2]:%f\n",adc[2]); temp=Get_Adc_Average(ADC_Channel_13,10); adc[3]=(float)temp*(3.3/4096); printf("\nADC[3]:%f\n",adc[3]); temp=Get_Adc_Average(ADC_Channel_14,10); adc[4]=(float)temp*(3.3/4096); printf("\nADC[4]:%f\n",adc[4]); temp=Get_Adc_Average(ADC_Channel_15,10); adc[5]=(float)temp*(3.3/4096); printf("\nADC[5]:%f\n",adc[5]); } int main(void) { // lMotor_Speed=250; // rMotor_Speed=250; // //TIM2_PWM_Init(); NVIC_Configuration(); delay_init(); uart_init(115200); Adc_Init(); // OLED_Init(); while(1) { adc_pid(); }[/mw_shl_code] [mw_shl_code=c,true]仿照原子哥的例程写了一段AD取值 串口返回

但是我用电压表测引脚电压是0 烧进去mini板的例程 例程很正常 那我这是哪儿错了？[/mw_shl_code]

杀手天使

引脚悬空了~