为啥我的定时器1.用软件仿真时可以看到死区。但是用示波器在开发板上就没有死区了

白桦林

为啥我的定时器1.用软件仿真时可以看到死区。但是用示波器在开发板上就没有死区了，和将死区没设一样？？？？谢谢各位，急用！！！


void TIM1_PWM_Init(u16 arr,u16 psc)
 {

     GPIO_InitTypeDef GPIO_InitStructure;
     TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
     TIM_OCInitTypeDef  TIM_OCInitStructure;
     TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
     RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);                            //?????3??
     RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB,ENABLE);       //??GPIO???????
     //  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);                             //???????????

     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;   
     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;                  
     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_Init(GPIOA,&GPIO_InitStructure);                             
     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;                  
     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
     GPIO_Init(GPIOB,&GPIO_InitStructure);                            

     TIM_TimeBaseStructure.TIM_Period = arr;                          
     TIM_TimeBaseStructure.TIM_Prescaler =psc;                        
     TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1;              //??????:TDTS = Tck_tim,// ????
     TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;       
     TIM_TimeBaseStructure.TIM_RepetitionCounter=0;                     
     TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);                     

     TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM2;                     //???pwm1????                                                          
     TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low;              //??????//????????????????                                              
     TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable;         //???????//??????
     TIM_OCInitStructure.TIM_OCNPolarity=TIM_OCNPolarity_Low;;            //?????????//????????????????
     TIM_OCInitStructure.TIM_OutputNState=TIM_OutputNState_Enable;       //???????
     TIM_OCInitStructure.TIM_OCIdleState=TIM_OCIdleState_Reset;          //???????
     TIM_OCInitStructure.TIM_OCNIdleState=TIM_OCNIdleState_Set;          //??????????
    
  // TIM_OCInitStructure.TIM_Pulse=CCR3_Val;
     TIM_OC1Init(TIM1,&TIM_OCInitStructure);                             //????1
  
     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=0x15;                                //??????
     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_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);               //??TIMx?CCR1????????,?????????CCR?????? ,???????
   
     TIM_ARRPreloadConfig(TIM1,ENABLE);                              //??TIMx?ARR?????????//??????
     TIM_Cmd(TIM1,ENABLE);                                           //??TIM1

     TIM_CtrlPWMOutputs(TIM1,ENABLE);                                //pwm????,???????

 }



TIM1_PWM_Init(200,7199);


TIM_SetCompare1(TIM1,100);          //  pA8,PB13

正点原子

帮顶。。。。