ucosIII移植的相关问题，无法输出pwm波

zhaods

这是我的初始化函数：void TIM1_PWM_Init(u16 arr,u16 psc)
{  
         GPIO_InitTypeDef GPIO_InitStructure;
        TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
        TIM_OCInitTypeDef  TIM_OCInitStructure;

        RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);//
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE);

        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; //TIM_CH1
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_Init(GPIOA, &GPIO_InitStructure);

        TIM_TimeBaseStructure.TIM_Period = arr;
        TIM_TimeBaseStructure.TIM_Prescaler =psc;
        TIM_TimeBaseStructure.TIM_ClockDivision = 0;
        TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
        TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);

        TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
        TIM_OCInitStructure.TIM_Pulse = 0;
        TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
        TIM_OC1Init(TIM1, &TIM_OCInitStructure);  

        TIM_CtrlPWMOutputs(TIM1,ENABLE);

        TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
       
        TIM_ARRPreloadConfig(TIM1, ENABLE);
       
        TIM_Cmd(TIM1, ENABLE);
}

在UCOSIII中主函数中初始化：
    TIM1_PWM_Init(59999,71);
    TIM_SetCompare1(TIM1,1);

但是PA8常亮，并没有输出pwm波

HXYDJ

先不带UCOSIII系统测试下代码都正常不

zhaods

HXYDJ 发表于 2020-3-18 11:16
先不带UCOSIII系统测试下代码都正常不

都是正常的，就是移植过去就不好使

1358235993zq

同求,我也是,控制不了电机

haoyu0008

楼主问题解决了没

zhaods

haoyu0008 发表于 2020-7-9 18:32
楼主问题解决了没

没有，请问有解决办法？