问答-
E503R,根据捕获的PWMA产生PWMB,发现AB相位差过大
使用的是GD32E503R,PB10引脚对应timer1_CH2,用于捕获外部PWM信号A的上升沿和下降沿；待捕获信号是50%占空比的200KHZ的PWM信号A；PA8,对应的SHRTIMER_ST0CH0,用于产生PWM信号B；。目标是PB10捕获到上升沿、下降沿，PA8产生的PWM信号翻转一次电平。现在B不能准确跟随A，相位差过大。PA8的PWM.C配置是outcfg_para.set_request=SHRTIMER_CHANNEL_SET_NONE;outcfg_para.reset_request=SHRTIMER_CHANNEL_RESET_NONE;PB10的CAP.C，中断函数中，if(fanzhuan==0){shrtimer_slavetimer_waveform_channel_software_request(SHRTIMER0,SHRTIMER_SLAVE_TIMER0,SHRTIMER_ST0_CH0,SHRTIMER_CHANNEL_SOFTWARE_SET);fanzhuan=1;}else{shrtimer_slavetimer_waveform_channel_software_request(SHRTIMER0,SHRTIMER_SLAVE_TIMER0,SHRTIMER_ST0_CH0,SHRTIMER_CHANNEL_SOFTWARE_RESET);fanzhuan=0;}；Q420471259
2025-07-23 0
