大帅府公寓1 发表于 2022-5-16 17:17

求助，GD32的pwm输出问题

在例程中可以正确输出pwm波形操纵舵机，但是将定时器配置复制到另一个工程中时，就无法正确输出pwm了，输出的波形占空比不对，请问这是为什么呢，有没有什么解决办法

大帅府公寓1 发表于 2022-5-16 17:20

timer_oc_parameter_struct timer_ocintpara;//**********************pwm
                timer_parameter_struct timer_initpara;
    rcu_periph_clock_enable(RCU_TIMER2);
    timer_deinit(TIMER2);
    /* TIMER4 configuration */
    timer_initpara.prescaler         = 1079;
    timer_initpara.alignedmode       = TIMER_COUNTER_EDGE;
    timer_initpara.counterdirection= TIMER_COUNTER_UP;
    timer_initpara.period            = 1999;
    timer_initpara.clockdivision   = TIMER_CKDIV_DIV1;
    timer_initpara.repetitioncounter = 0;
    timer_init(TIMER2,&timer_initpara);
       
定时器配置程序：
    timer_ocintpara.ocpolarity   = TIMER_OC_POLARITY_HIGH;
    timer_ocintpara.outputstate= TIMER_CCX_ENABLE;
    timer_ocintpara.ocnpolarity= TIMER_OCN_POLARITY_HIGH;
    timer_ocintpara.outputnstate = TIMER_CCXN_DISABLE;
    timer_ocintpara.ocidlestate= TIMER_OC_IDLE_STATE_LOW;
    timer_ocintpara.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW;
                timer_channel_output_config(TIMER2,TIMER_CH_0,&timer_ocintpara);
    timer_channel_output_pulse_value_config(TIMER2,TIMER_CH_0,250);
    timer_channel_output_mode_config(TIMER2,TIMER_CH_0,TIMER_OC_MODE_PWM0);
    timer_channel_output_shadow_config(TIMER2,TIMER_CH_0,TIMER_OC_SHADOW_DISABLE);
          /* auto-reload preload enable */
    timer_auto_reload_shadow_enable(TIMER2);
    /* auto-reload preload enable */
    timer_enable(TIMER2);
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