关于STM32103VE的TIM1的Channel1通道输出普通PMW的问题

程序只需输出普通的PWM
配置如下
    // Time base configuration     
    TIM_TimeBaseStructure.TIM_Period = 4095;
    TIM_TimeBaseStructure.TIM_Prescaler = 0;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
    TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
    TIM_OCInitStructure.TIM_Pulse = 1024;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;   

    TIM_OC3Init(TIM1, &TIM_OCInitStructure);     
   //TIM_OC1Init(TIM1, &TIM_OCInitStructure);   
    TIM_Cmd(TIM1, ENABLE);
    // Main Output Enable
    TIM_CtrlPWMOutputs(TIM1, ENABLE);

只有通道1不能输出PWM
换任何一个都可以  包括别的普通的定时器也都好使 唯独TIM1的通道一
IO我都配置了
实在搞不明白

没有人用TIM1的通道一输出普通的PWM吗

我的pwm也有问题