void  Adc_Init(void)
{        
        ADC_InitTypeDef ADC_InitStructure;
        GPIO_InitTypeDef GPIO_InitStructure;
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_ADC1 , ENABLE );          //ê1ÄüADC1í¨μàê±Öó


        //RCC_ADCCLKConfig(RCC_PCLK2_Div8);   //éèÖÃADC·ÖÆμòò×ó6 72M/6=12,ADC×î′óê±¼ä2»Äü3¬1y14M
  //        //PA0--ADC_IN0  PA1--ADC_IN1  PA2--ADC_IN2  PA3--ADC_IN3  PA4--ADC_IN4  PA5--ADC_IN5
        //PA1 ×÷ÎaÄ￡Äaí¨μàêäèëòy½Å                        
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;                //Ä￡Äaêäèëòy½Å
        GPIO_Init(GPIOA, &GPIO_InitStructure);       

        ADC_DeInit(ADC1);  //¸′λADC1

        ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;        //ADC1¤×÷Ä￡ê½:ADC1oíADC21¤×÷Ôú¶àá￠Ä￡ê½
        ADC_InitStructure.ADC_ScanConvMode = DISABLE;        //μ￥í¨μà1رÕ
        ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;  //1رÕá¬Dø×a»»
        ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T3_CC1;        //×a»»óéTIM3′￥·￠
        ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;        //ADCêy¾Yóò¶ÔÆë
        ADC_InitStructure.ADC_NbrOfChannel =1;        //Ë3Dò½øDD1æÔò×a»»μÄADCí¨μàμÄêyÄ¿￡¬′Ë′|1¸öDÅμà￡¨¿é¿aμÄÎa1~16￡©
        ADC_Init(ADC1, &ADC_InitStructure);        //¸ù¾YADC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèADCxμļÄ′æÆ÷   
//ADC3￡1æDÅμàÅäÖÃ
//ADC1,ADCí¨μàx,1æÔò2éÑùË3DòÖμÎay,2éÑùê±¼äÎa55.5ÖüÆú
        ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_1Cycles5 );               

       
// ¿aÆôADCμÄDMAÖ§3Ö￡¨òaêμÏÖDMA1|Äü￡¬»1Dè¶àá￠ÅäÖÃDMAí¨μàμè2Îêy￡©
               
        ADC_DMACmd(ADC1, ENABLE);       //ê1ÄüADC1μÄDMA′«êä
       
        ADC_Cmd(ADC1, ENABLE);        //ê1ÄüÖ¸¶¨μÄADC1
       
        ADC_ResetCalibration(ADC1);        //ê1Äü¸′λD￡×¼  
         
        while(ADC_GetResetCalibrationStatus(ADC1));        //μè′y¸′λD￡×¼½áêø
       
        ADC_StartCalibration(ADC1);         //¿aÆôADD￡×¼

        while(ADC_GetCalibrationStatus(ADC1));         //μè′yD￡×¼½áêø

//        ADC_SoftwareStartConvCmd(ADC1, ENABLE);                //ê1ÄüÖ¸¶¨μÄADC1μÄèí¼t×a»»Æô¶ˉ1|Äü

}                                  

void TIM3_Int_Init(u16 arr,u16 psc)
{
                TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
                NVIC_InitTypeDef NVIC_InitStructure;

                RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //ê±Öóê1Äü

                TIM_TimeBaseStructure.TIM_Period = arr; //éèÖÃÔúÏÂò»¸ö¸üDÂê¼t×°èë»î¶ˉμÄ×Ô¶ˉÖØ×°ÔؼÄ′æÆ÷ÖüÆúμÄÖμ         ¼Æêyμ½5000Îa500ms
                TIM_TimeBaseStructure.TIM_Prescaler =psc; //éèÖÃóÃà′×÷ÎaTIMxê±ÖóÆμÂê3yêyμÄÔ¤·ÖÆμÖμ  10KhzμļÆêyÆμÂê  
                TIM_TimeBaseStructure.TIM_ClockDivision = 0; //éèÖÃê±Öó·Ö¸î:TDTS = Tck_tim
                TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIMÏòéϼÆêyÄ￡ê½
                TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //¸ù¾YTIM_TimeBaseInitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉTIMxμÄê±¼ä»ùêyμ￥λ
         
                TIM_ITConfig(  //ê1Äü»òÕßê§ÄüÖ¸¶¨μÄTIMÖD¶Ï
                        TIM3, //TIM2
                        TIM_IT_Update ,
                        ENABLE  //ê1Äü
                        );
                NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3ÖD¶Ï
                NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //ÏèÕ¼óÅÏ輶0¼¶
                NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //′óóÅÏ輶3¼¶
                NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μà±»ê1Äü
                NVIC_Init(&NVIC_InitStructure);  //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷

                TIM_Cmd(TIM3, ENABLE);  //ê1ÄüTIMxíaéè
                                                         
}



void MYDMA_Config(DMA_Channel_TypeDef* DMA_CHx,u32 cpar,u32 cmar,u16 cndtr)
{
        RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);        //ê1ÄüDMA′«êä
       
  DMA_DeInit(DMA_CHx);   //½«DMAμÄí¨μà1¼Ä′æÆ÷ÖØéèÎaè±ê¡Öμ

//        DMA1_MEM_LEN=cndtr;
        DMA_InitStructure.DMA_PeripheralBaseAddr = cpar;  //DMAíaéè»ùμØÖ·
        DMA_InitStructure.DMA_MemoryBaseAddr = cmar;  //DMAÄú′æ»ùμØÖ·
        DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;  //êy¾Y′«êä·½Ïò￡¬′óíaéèADC·￠Ëíμ½Äú′æ¶áè¡
        DMA_InitStructure.DMA_BufferSize = cndtr;  //DMAí¨μàμÄDMA»o′æμÄ′óD¡
        DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;  //íaéèμØÖ·¼Ä′æÆ÷2»±ä
        DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;  //Äú′æμØÖ·¼Ä′æÆ÷μYÔö
        DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;  //êy¾Y¿í¶èÎa16λ
        DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //êy¾Y¿í¶èÎa16λ
        DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;  //Ñ-»·1¤×÷Ä￡ê½
        DMA_InitStructure.DMA_Priority = DMA_Priority_High; //DMAí¨μà xóμóD¸ßóÅÏ輶
        DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;  //DMAí¨μàxûóDéèÖÃÎaÄú′æμ½Äú′æ′«êä
        DMA_Init(DMA_CHx, &DMA_InitStructure);  //¸ù¾YDMA_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉDMAμÄí¨μàUSART1_Tx_DMA_ChannelËù±êê¶μļÄ′æÆ÷
                 
}


就差TIM3的中断函数怎么写了-。-