请问GD32E230PWM输出波形怎么调成直上直下的
void timer_config(void)
{
timer_oc_parameter_struct timer_ocintpara;
timer_parameter_struct timer_initpara;
rcu_periph_clock_enable(RCU_TIMER16);
timer_deinit(TIMER16);
/* TIMER configuration */
timer_initpara.prescaler = 7200;
timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection = TIMER_COUNTER_UP;
timer_initpara.period = 4000;
timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER16,&timer_initpara);
/* configurate CH0 in PWM mode0 */
timer_ocintpara.outputstate = TIMER_CCX_ENABLE;
timer_ocintpara.outputnstate = TIMER_CCXN_DISABLE;
timer_ocintpara.ocpolarity = TIMER_OC_POLARITY_HIGH;//极性为高 占空比内高电平
timer_ocintpara.ocnpolarity = TIMER_OCN_POLARITY_HIGH;
timer_ocintpara.ocidlestate = TIMER_OC_IDLE_STATE_LOW;
timer_ocintpara.ocnidlestate = TIMER_OCN_IDLE_STATE_LOW;
timer_channel_output_config(TIMER16,TIMER_CH_0,&timer_ocintpara);
timer_channel_output_pulse_value_config(TIMER16,TIMER_CH_0,1000); // 50% duty
timer_channel_output_mode_config(TIMER16,TIMER_CH_0,TIMER_OC_MODE_PWM0);
timer_channel_output_shadow_config(TIMER16,TIMER_CH_0,TIMER_OC_SHADOW_DISABLE);
/* auto-reload preload enable */
timer_auto_reload_shadow_enable(TIMER16);
// timer_automatic_output_enable(TIMER16);
timer_primary_output_config(TIMER16,ENABLE);
/* auto-reload preload enable */
timer_enable(TIMER16);
}
上面代码运行结果用示波器打出来是这样
怎样能做到输出波形是没有滑下来的那条线
