PWM在驱动LED灯时无法正常驱动，如何解决？

Question

PWM在驱动LED灯时无法正常驱动

void PWM_Init(void)
{ 
    
        
    
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
    
    
    GPIO_InitTypeDef   GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Mode =   GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
    GPIO_Init(GPIOA,&GPIO_InitStructure);
    
    TIM_InternalClockConfig(TIM2);
    
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseInitStructure;
    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInitStructure.TIM_Period = 100-1;//arr
    TIM_TimeBaseInitStructure.TIM_Prescaler = 720-1;//psc
    TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
    TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);
     
    TIM_OCInitTypeDef TIM_OCInitStructure;
    TIM_OCStructInit(&TIM_OCInitStructure);
    TIM_OCInitStructure.TIM_OCMode =TIM_OCMode_PWM1  ;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High ;
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
    TIM_OCInitStructure.TIM_Pulse = 50 ;//ccr
    TIM_OC1Init(TIM2,&TIM_OCInitStructure);
    
    TIM_Cmd(TIM2,ENABLE);
}

Answer 1

检查灯的引脚是否正确，PWM启用函数有没有写，光看驱动配置看不出来啥