问答-
GD32F330C8T6 TIMER0 CH3 PWM波输入捕获配置问题
配置的定时器0通道3捕获PWM波无法捕获到，一直进中断，如下是我定时器的代码，不知道哪里的配置有问题，请求大神指导，timer_ic_parameter_structtimer_icinitpara;timer_parameter_structtimer_initpara;rcu_periph_clock_enable(RCU_TIMER0);timer_deinit(TIMER0);timer_initpara.prescaler=83;//预分频timer_initpara.alignedmode=TIMER_COUNTER_EDGE;timer_initpara.counterdirection=TIMER_COUNTER_UP;timer_initpara.period=65535;timer_initpara.clockdivision=TIMER_CKDIV_DIV1;timer_initpara.repetitioncounter=0;timer_init(TIMER0,&timer_initpara);/*TIMER0configuration*//*TIMER0CH3PWMinputcaptureconfiguration*/timer_icinitpara.icpolarity=TIMER_IC_POLARITY_RISING;timer_icinitpara.icselection=TIMER_IC_SELECTION_DIRECTTI;timer_icinitpara.icprescaler=TIMER_IC_PSC_DIV1;timer_icinitpara.icfilter=0x0;timer_input_pwm_capture_config(TIMER0,TIMER_CH_3,&timer_icinitpara);/*slavemodeselection:TIMER0*/timer_input_trigger_source_select(TIMER0,TIMER_SMCFG_TRGSEL_CI0FE0);timer_slave_mode_select(TIMER0,TIMER_SLAVE_MODE_RESTART);/*selectthemasterslavemode*/timer_master_slave_mode_config(TIMER0,TIMER_MASTER_SLAVE_MODE_ENABLE);/*auto-reloadpreloadenable*/timer_auto_reload_shadow_enable(TIMER0);/*clearchannel0interruptbit*/timer_interrupt_flag_clear(TIMER0,TIMER_INT_CH3);/*channel0interruptenable*/timer_interrupt_enable(TIMER0,TIMER_INT_CH3);/*TIMER0counterenable*/timer_enable(TIMER0);其中IO口和中断优先级已经确认配置无误，同时发现当前版本库这个函数timer_input_pwm_capture_config(TIMER0,TIMER_CH_3,&timer_icinitpara);的参数上没有TIMER_CH_3这一输入源，可能问题出现在这里，搞不懂。
2022-08-11 0
