stm32f0编程，一打开ADC时钟，TIM3的中断就不起作用了

^ 等待永恒...^ 提问时间：2013-4-7 19:51 /

下面是我的程序，请大神们帮忙看看，新手刚刚开始学。。
/**************************************************************/
/**
* @brief Configure the TIM3 IRQ Handler.
* @param None
* @retval None
*/
static __IO uint16_t PrescalerValue_TIM3=48;
void TIM3_Config(void)
{
NVIC_InitTypeDef NVIC_InitStructure;

/* TIM3 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

/* Enable the TIM3 gloabal Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

/* Configuration of TIM3 */
TIM_InternalClockConfig(TIM3); //use internal clock
TIM_TimeBaseInit(TIM3,TIM_TimeBaseInitStruct);
TIM_PrescalerConfig(TIM3,PrescalerValue_TIM3,0);
TIM_CounterModeConfig(TIM3,TIM_CounterMode_Up);
TIM_SetCounter(TIM3,0);
TIM_SetAutoreload(TIM3,1000);
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);

}
/**************************************************************/
/**
* @brief Configure the ADC.
* @param None
* @retval None
*/
void ADC_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;

/* ADC1 Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

/* Configure the ADC1 in continous mode withe a resolutuion equal to 12 bits*/
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
ADC_Init(ADC1, &ADC_InitStructure);

/* Convert the ADC1 Channel 11 with 239.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_0 , ADC_SampleTime_239_5Cycles);
ADC_ChannelConfig(ADC1, ADC_Channel_1 , ADC_SampleTime_239_5Cycles);

/* ADC Calibration */
ADC_GetCalibrationFactor(ADC1);

/* Enable the auto delay feature */
ADC_WaitModeCmd(ADC1, ENABLE);

/* Enable the Auto power off mode */
ADC_AutoPowerOffCmd(ADC1, ENABLE);

/* Enable ADCperipheral[PerIdx] */
ADC_Cmd(ADC1, ENABLE);

/* Wait the ADCEN flag */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN));

/* ADC1 regular Software Start Conversion */
ADC_StartOfConversion(ADC1);
}

/**************************************************************/
/**
* @brief Main program
* @param None
* @retval None
*/
static __IO uint16_t ADC1ConvertedValue = 0;
static __IO float ADC1ConvertedVoltage = 0.0;
int main(void)
{
/* Initialize Leds mounted on STM32F0-discovery */
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
STM_EVAL_PWMInit(PWM1);
STM_EVAL_ADInit(AD0);
STM_EVAL_ADInit(AD1);

/* Initialize User_Button on STM32F0-Discovery */
STM_EVAL_PBInit(BUTTON_USER, BUTTON_MODE_GPIO);

/* TIM Configuration */
TIM2_Config();
TIM3_Config();

/* ADC Configuration */
ADC_Config();

/* Setup SysTick Timer for 1 msec interrupts */
if(SysTick_Config(SystemCoreClock / 1000))
{
while (1);
}

/* Infinite loop */
while(1)
{
key_LED3();

//if(sign_instant[5]==1)
//{
//sign_instant[5]=0;

/* Get ADC1 converted data */
//ADC1ConvertedValue = ADC_GetConversionValue(ADC1);

/* Compute the voltage */
//ADC1ConvertedVoltage = (ADC1ConvertedValue*3.3)/0xFFF;
//}
}
}

/**************************************************************/

下面是我ADC的GPIO口初始化的程序
#define ADn 2

#define AD0_PIN   GPIO_Pin_0
#define AD0_GPIO_PORT GPIOA
#define AD0_GPIO_CLK RCC_AHBPeriph_GPIOA

#define AD1_PIN GPIO_Pin_1
#define AD1_GPIO_PORT GPIOA
#define AD1_GPIO_CLK RCC_AHBPeriph_GPIOA

GPIO_TypeDef* AD_PORT[ADn] = {AD0_GPIO_PORT, AD1_GPIO_PORT};
const uint16_t AD_PIN[ADn] = {AD0_PIN, AD1_PIN};
const uint32_t AD_CLK[ADn] = {AD0_GPIO_CLK, AD1_GPIO_CLK};

void STM_EVAL_ADInit(AD_TypeDef ad)
{
GPIO_InitTypeDef GPIO_InitStructure;

/* GPIOA Clocks enable */
RCC_AHBPeriphClockCmd(AD_CLK[ad], ENABLE);

/* GPIOA Configuration: Channel 1 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = AD_PIN[ad];
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(AD_PORT[ad], &GPIO_InitStructure);
}