void TIM1_PWM_Init(u16 arr,u16 psc)
{
    u16 pulse;
    TIM_OCInitTypeDef TIM_OCInitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
    
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
    GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1,ENABLE);
    
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    
   // pulse = (4295-ADvalue1)/2;
    
    TIM_TimeBaseStructure.TIM_Period    = arr
    TIM_TimeBaseStructure.TIM_Prescaler = psc
    TIM_TimeBaseStructure.TIM_ClockDivision     = 1;
    TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0000;
    TIM_TimeBaseStructure.TIM_CounterMode       = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);
    
    //TIM_ARRPreloadConfig(TIM1, DISABLE);      
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState  = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 0;//CCR
    TIM_OCInitStructure.TIM_OCPolarity   = TIM_OCPolarity_High;
    TIM_OCInitStructure.TIM_OCNPolarity  = TIM_OCNPolarity_High;
    TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Set;
    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
  
      TIM_OC1Init(TIM1, &TIM_OCInitStructure); 
      TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
  
    TIM_OC2Init(TIM1, &TIM_OCInitStructure);      
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);     
   TIM_OC3Init(TIM1, &TIM_OCInitStructure);  
     TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);   
     TIM_OC4Init(TIM1, &TIM_OCInitStructure); 
     TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable);  
 
    TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;
        TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;
        TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
        TIM_BDTRInitStructure.TIM_DeadTime = 0x2B;  
        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_OC1NPolarityConfig(TIM1, TIM_OCNPolarity_High);
    //TIM_OC1PolarityConfig(TIM1,TIM_OCPolarity_Low);
    
    //TIM_CCPreloadControl(TIM1, ENABLE);
  TIM1->CCER|=0<<1;
  TIM1->CCER|=1<<5;
 TIM1->CCER|=0<<9;
  TIM1->CCER|=1<<13;
    TIM_Cmd(TIM1, ENABLE);
    TIM_CtrlPWMOutputs(TIM1, ENABLE);
}  只能产生4路互补信号，产生不了死区，求指点