麻烦楼主能贴下 代码么？鄙人的照着原子哥的修改，出不来波形？

void TIM1_PWM_Init(u32 arr, u32 psc)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef   TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);    //TIM1时钟使能
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);   //使能PORTB时钟

    GPIO_PinAFConfig(GPIOB,GPIO_PinSource13, GPIO_AF_TIM1);//PB13 复用为TIM1

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;              //GPIOB13
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;           //复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;     //速度50MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;         //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;           //上拉
    GPIO_Init(GPIOB, &GPIO_InitStructure);                 //初始化 B13  

TIM_TimeBaseStructure.TIM_Prescaler = psc;             //定时器分频
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数模式
    TIM_TimeBaseStructure.TIM_Period = arr;                //自动重装值
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
 
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);              //初始化定时器1

//初始化 TIM1 Channel WM 模式
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;            //PWM调制模式1
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//比较输出使能
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;     //输出极性低
TIM_OC1Init(TIM1, &TIM_OCInitStructure);                     //初始化外设 TIM1 OC1 
TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);             //使能预装载寄存器
        TIM_ARRPreloadConfig(TIM1,ENABLE);                           //ARPE使能

        TIM_CtrlPWMOutputs(TIM1,ENABLE);                             //高级定时器 还需要设置一个MOE位以使能主输出 否则不会输出                       WM
   TIM_Cmd(TIM1,ENABLE);                                        //使能TIM1
}