PA11接受脉冲信号，实现每一个上升沿AD采样一次，这里的脉冲我是用PA1发送的，脉冲信号正常我测过了，可是AD没有采集到数据，希望哪位高手帮忙看看，我的源码都在下面了。万分感谢！

#include"stm32f10x.h"

#define ADC1_DR_Address    ((u32)0x4001244C)

const int N = 1024;

vu16 ADC_ConvertedValue[N];

void RCC_Configuration(void)

{

SystemInit();

}

void GPIO_config(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE |RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);

}

void Timer_Config(void)

{

TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;

TIM_OCInitTypeDef  TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 , ENABLE);

TIM_DeInit(TIM2);

TIM_TimeBaseStructure.TIM_Period=199;

TIM_TimeBaseStructure.TIM_Prescaler= (360 - 1);         TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;

TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;

TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;

TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

TIM_OCInitStructure.TIM_Pulse=100;

TIM_OC2Init(TIM2,&TIM_OCInitStructure);

TIM_OC2PreloadConfig(TIM2,TIM_OCPreload_Enable);

TIM_Cmd(TIM2, ENABLE);

}

void EXTI_Config(void)

{

EXTI_InitTypeDef EXTI_InitStructure;

GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource11);

EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;

EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;

EXTI_InitStructure.EXTI_Line = EXTI_Line11;

EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure);

}

void DMA_Config(void)

{

DMA_InitTypeDef DMA_InitStructure;

DMA_DeInit(DMA1_Channel1);

DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;

DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValue;

DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;

DMA_InitStructure.DMA_BufferSize = N;

DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;

DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;

DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;

DMA_InitStructure.DMA_Priority = DMA_Priority_High;

DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;

DMA_Init(DMA1_Channel1, &DMA_InitStructure);

DMA_ITConfig(DMA1_Channel1, DMA_IT_TC, ENABLE);

DMA_Cmd(DMA1_Channel1, ENABLE);

}

void ADC_Config(void)

{

ADC_InitTypeDef ADC_InitStructure;

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;                 ADC_InitStructure.ADC_ScanConvMode = DISABLE;                                 ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_Ext_IT11_TIM8_TRGO;               ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;

ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

ADC_InitStructure.ADC_NbrOfChannel = 1;

ADC_Init(ADC1, &ADC_InitStructure);

ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 1, DC_SampleTime_7Cycles5);

ADC_ExternalTrigConvCmd(ADC1, ENABLE);

ADC_DMACmd(ADC1, ENABLE);        //Enable ADC1 DMA

ADC_Cmd(ADC1, ENABLE);        //Enable ADC1

}

int main(void)

{

RCC_Configuration();

GPIO_config();

Timer_Config();

EXTI_Config();

ADC_Config();

DMA_Config();

while(1)

{

}

}