产生方波问题

wewewe007

产生方波问题 [复制链接]

怎样使用stm32中的定时器，产生50hz的方波，知道的只需将对应的参数告诉我即可！！谢谢啦，帮帮忙！！

408584884

TIM_TimeBaseStructure.TIM_Prescaler =8-1;                TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;                //向上计数
        TIM_TimeBaseStructure.TIM_Period =1000-1;                                       
        TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;         
        TIM_TimeBaseStructure.TIM_RepetitionCounter = 0x0;       
        TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);

        /* Channel 1 Configuration in PWM mode */
        TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;                                 //PWM模式2
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;         //正向通道有效
        TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;//反向通道无效
        TIM_OCInitStructure.TIM_Pulse =500;                 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;                 //输出极性
        TIM_OCInitStructure.TIM_OCNPolarity =TIM_OCNPolarity_Low;     //互补端的极性
        TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
        TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

408584884

改TIM_TimeBaseStructure.TIM_Prescaler和TIM_TimeBaseStructure.TIM_Period的值确定频率，我直接复制的，没改，根据你的板子上的时钟改

wewewe007

谢谢了，已经解决！我再请问你哥问题，怎样通过定时器的功能检测三相电的相序？

wewewe007

怎么木有人回答了呀？