芯片stm32f103zet6 定时器8输出不了互补的 pwm

韩韩韩

主函数
int main(void)
{       
        delay_init();                   
        TIM1_PWM_Init(1999,899);
        TIM8_PWM_Init(1999,899);
           while(1)
        {
                                                         
                TIM_SetCompare1(TIM1,1000);          
                TIM_SetCompare2(TIM1,1000);          
                TIM_SetCompare3(TIM1,1000);         
                TIM_SetCompare2(TIM8,1000);          
                TIM_SetCompare3(TIM8,1000);          
        }
}
pwm输出
void TIM1_PWM_Init(u16 arr,u16 psc)
{  
          GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
    TIM_OCInitTypeDef TIM_OCInitStructure;
    TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB,ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA,&GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
    GPIO_Init(GPIOB,&GPIO_InitStructure);
       
    TIM_DeInit(TIM1);
    TIM_TimeBaseInitStructure.TIM_Period = arr;
    TIM_TimeBaseInitStructure.TIM_Prescaler = psc;
    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStructure);
       
    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;
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
    TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
    TIM_OC1Init(TIM1, &TIM_OCInitStructure);
    TIM_OC2Init(TIM1, &TIM_OCInitStructure);
    TIM_OC3Init(TIM1, &TIM_OCInitStructure);
    TIM_OC1PreloadConfig(TIM1,TIM_OCPreload_Enable);
    TIM_OC2PreloadConfig(TIM1,TIM_OCPreload_Enable);
    TIM_OC3PreloadConfig(TIM1,TIM_OCPreload_Enable);
               
    TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Disable;
    TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Disable;
    TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;
    TIM_BDTRInitStructure.TIM_DeadTime = 36;
    TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
    TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low;
    TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
    TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);
    TIM_Cmd(TIM1, ENABLE);
    TIM_CCPreloadControl(TIM1,ENABLE);
    TIM_CtrlPWMOutputs(TIM1, ENABLE);

}
void TIM8_PWM_Init(u16 arr,u16 psc)
{  
          GPIO_InitTypeDef GPIO_InitStructure;
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
    TIM_OCInitTypeDef TIM_OCInitStructure;
       
        NVIC_InitTypeDef NVIC_InitStructure;
    TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8 | RCC_APB2Periph_GPIOC |  RCC_APB2Periph_GPIOB,ENABLE);
    //设置该引脚为复用输出功能,输出TIM8 CH1的PWM脉冲波形
          GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_8;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//复用推挽输出
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOC,&GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1;
                GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  
                GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
                GPIO_Init(GPIOB,&GPIO_InitStructure);
    TIM_DeInit(TIM8);
    TIM_TimeBaseInitStructure.TIM_Period = arr;//设置在下一个更新事件装入活动的自动重装载寄存器周期的值     80K   
    TIM_TimeBaseInitStructure.TIM_Prescaler = psc;//设置用来作为TIMx时钟频率除数的预分频值  不分频
    TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;//设置时钟分割:TDTS = Tck_tim
    TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;//TIM向上计数模式
    TIM_TimeBaseInit(TIM8,&TIM_TimeBaseInitStructure);//根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
       
    TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//选择定时器模式:TIM脉冲宽度调制模式1
    TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//比较输出使能
    TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;//互补输出使能
    TIM_OCInitStructure.TIM_Pulse = 0;//设置待装入捕获比较寄存器的脉冲值
    TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//ocx高电平有效
    TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;//ocxn高电平有效
    TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
    TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
                //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
    TIM_OC2Init(TIM8, &TIM_OCInitStructure);
    TIM_OC3Init(TIM8, &TIM_OCInitStructure);

    TIM_OC2PreloadConfig(TIM8,TIM_OCPreload_Enable);
    TIM_OC3PreloadConfig(TIM8,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 = 0;

TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
    TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_Low;
    TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;
    TIM_BDTRConfig(TIM8, &TIM_BDTRInitStructure);
    TIM_Cmd(TIM8, ENABLE);
    TIM_CCPreloadControl(TIM8,ENABLE);
    TIM_CtrlPWMOutputs(TIM8, ENABLE);
           
    }


定时器1可以产生三对互补的PWM,定时器8按照同样的操作，产生不了互补的PWM。同为高级定时器，但是找不到问题所在，希望有大佬帮忙解决。

韩韩韩

我用的芯片stm32f103zet6，高级定时器1可以产生互补的PWM，高级定时器8也按照这样修改，定时器8输出不了的原因，麻烦大佬告诉一下原因，帮帮忙

1693487612

我也遇到同样的问题，楼主解决了没有