PWM的问题，电机驱动。

963681554@qq.co

//TIM5 PWM??·??????? 
//PWM??????????
//arr??×?????×°??
//psc???±???¤·?????
void TIM5_PWM_Init(u32 arr,u32 psc)
{  
//????·??è????????IO???è??

GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5,ENABLE);   //TIM5?±??????    
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); //????PORTF?±??

GPIO_PinAFConfig(GPIOA,GPIO_PinSource0,GPIO_AF_TIM5); //GPIOA0???????¨?±?÷5

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;           //GPIOA0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;        //????????
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //????100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;      //???ì????????
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;        //????
GPIO_Init(GPIOA,&GPIO_InitStructure);              //??????PA0
 
TIM_TimeBaseStructure.TIM_Prescaler=psc;  //?¨?±?÷·???
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //?ò??????????
TIM_TimeBaseStructure.TIM_Period=arr;   //×?????×°????
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1; 

TIM_TimeBaseInit(TIM5,&TIM_TimeBaseStructure);//???????¨?±?÷5

//??????TIM14 Channel1 PWM????  
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //?????¨?±?÷????:TIM?????í???÷??????1
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //±???????????
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //????????:TIM????±?????????
TIM_OC1Init(TIM5, &TIM_OCInitStructure);  //?ù??T???¨???????????????èTIM1 4OC1

TIM_OCInitStructure.TIM_Pulse = 0x00;
TIM_OC1PreloadConfig(TIM5, TIM_OCPreload_Enable);  //????TIM5??CCR1?????¤×°???????÷
 
  TIM_ARRPreloadConfig(TIM5,ENABLE);//ARPE???? 

TIM_Cmd(TIM5, ENABLE);  //????TIM5
 
 
}  



PWM初始化之后电机一直转，我明明初始化的是0，电机停不下来。哪错了吗

石头0218

TIM_OCInitStructure.TIM_Pulse = 0x00;之后应该加TIM_OC1Init(TIM5, &TIM_OCInitStructure); 的吧？