仿真有波形示波器没波形。。。在线等，急！！！！

void TIM1_GPIO_Configuration(void)

{

        GPIO_InitTypeDef GPIO_InitStructure;

        GPIO_PinRemapConfig(GPIO_FullRemap_TIM1,ENABLE);

        RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOE|RCC_APB2Periph_TIM1,ENABLE);

        GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;

        GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;

        GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;

        GPIO_Init(GPIOE,&GPIO_InitStructure);

}



void TIM1_MODE_Configuration(void)

{        

        TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

        TIM_OCInitTypeDef TIM_OCInitStructure;

        NVIC_InitTypeDef NVIC_InitStructure;

        TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

        

        TIM_TimeBaseInitStructure.TIM_Period=14399;                

        TIM_TimeBaseInitStructure.TIM_Prescaler=0;                

        TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;        

        TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_CenterAligned1;        

        TIM_TimeBaseInitStructure.TIM_RepetitionCounter=0;

        TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);

        

        TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM2;

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_OutputNState=TIM_OutputNState_Enable;

        TIM_OCInitStructure.TIM_Pulse=0;

        TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low;

        TIM_OCInitStructure.TIM_OCNPolarity=TIM_OCNPolarity_Low;

        TIM_OCInitStructure.TIM_OCIdleState=TIM_OCIdleState_Set;        

        TIM_OCInitStructure.TIM_OCNIdleState=TIM_OCNIdleState_Reset;

        TIM_OC1Init(TIM1,&TIM_OCInitStructure);

        TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_Pulse=0;

        TIM_OC2Init(TIM1,&TIM_OCInitStructure); 

        TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

        TIM_OCInitStructure.TIM_Pulse=0;

        TIM_OC3Init(TIM1,&TIM_OCInitStructure); 

        TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);

        

//        TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;

//        TIM_OCInitStructure.TIM_Pulse=125;

//        TIM_OC4Init(TIM1,&TIM_OCInitStructure); 

//        TIM_OC4PreloadConfig(TIM1,TIM_OCPreload_Enable);



  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);            

  NVIC_InitStructure.NVIC_IRQChannel=TIM1_UP_IRQn;         

        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0; 

        NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;        

        NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;         

        NVIC_Init(&NVIC_InitStructure); 

        TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);

        

        TIM_BDTRInitStructure.TIM_OSSRState=TIM_OSSRState_Disable;

        TIM_BDTRInitStructure.TIM_OSSIState=TIM_OSSIState_Disable;      

        TIM_BDTRInitStructure.TIM_LOCKLevel=TIM_LOCKLevel_OFF;       

        TIM_BDTRInitStructure.TIM_DeadTime=0;                                          

        TIM_BDTRInitStructure.TIM_Break=TIM_Break_Disable;                    

        TIM_BDTRInitStructure.TIM_BreakPolarity=TIM_BreakPolarity_High;   

        TIM_BDTRInitStructure.TIM_AutomaticOutput=TIM_AutomaticOutput_Enable;   

        TIM_BDTRConfig(TIM1,&TIM_BDTRInitStructure);

        

        TIM_ARRPreloadConfig(TIM1,ENABLE);

        TIM_Cmd(TIM1,ENABLE);

        TIM_CtrlPWMOutputs(TIM1,ENABLE);

}



中断里

                TIM1->CCR1 =svpwmdq1.Ta*72;

                TIM1->CCR2 =svpwmdq1.Tb*72;

                TIM1->CCR3 =svpwmdq1.Tc*72;