求助，GD32的pwm输出问题

只看该作者 · 2022-5-16 17:17

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

只看该作者 · 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);