【GD32L233C-START评测】2,定时器中断

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【GD32L233C-START评测】2,定时器中断 [复制链接]

由于某种原因，要用到定时器中断，看看例程可以说没有，于是我就自己上阵了。

 

我查了库函数手册，加了定时器1中断允许，也在gd32l23x_it.c中加入了如下函数：

void TIMER1_IRQHandler(void)
{
	timer_flag_clear(TIMER1, TIMER_FLAG_UP); 
	gd_eval_led_toggle(LED1); 
}

但是编译后不好用，打断点就是不进入。

我在网上找了半天也无果，我就试着加入了总中断允许。就是nvic_irq_enable部分，这下好了。

timer_interrupt_enable(TIMER1,TIMER_INT_UP);
		
		nvic_irq_enable(TIMER1_IRQn ,1);

 

全部代码是我从例程修的：

void timer_config(void)
{
    /* -----------------------------------------------------------------------
    TIMER2CLK is 100KHz

    TIMER2 channel duty cycle = (25000/ 50000)* 100  = 50%
    ----------------------------------------------------------------------- */
    timer_oc_parameter_struct timer_ocintpara;
    timer_parameter_struct timer_initpara;

    rcu_periph_clock_enable(RCU_TIMER1);

    timer_deinit(TIMER1);

    /* TIMER configuration */
    timer_struct_para_init(&timer_initpara);
    timer_initpara.prescaler         = 639;
    timer_initpara.alignedmode       = TIMER_COUNTER_EDGE;
    timer_initpara.counterdirection  = TIMER_COUNTER_UP;
    timer_initpara.period            = 49999;
	  timer_initpara.clockdivision     = TIMER_CKDIV_DIV1;
    timer_init(TIMER1, &timer_initpara);

    /* configurate channel */
//    timer_channel_output_struct_para_init(&timer_ocintpara);
//    timer_ocintpara.ocpolarity  = TIMER_OC_POLARITY_HIGH;
//    timer_ocintpara.outputstate = TIMER_CCX_ENABLE;
//    timer_channel_output_config(TIMER2, TIMER_CH_0, &timer_ocintpara);

//    /* configure TIMER channel output pulse value */
//    timer_channel_output_pulse_value_config(TIMER2, TIMER_CH_0, 25000);
//    /* configurate channel in PWM mode0 */
//    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);

    timer_interrupt_enable(TIMER1,TIMER_INT_UP);
		
		nvic_irq_enable(TIMER1_IRQn ,1);

    timer_counter_value_config(TIMER1,0);
 
    timer_interrupt_flag_clear(TIMER1, TIMER_INT_FLAG_UP); 

    /* auto-reload preload enable */
    timer_auto_reload_shadow_enable(TIMER1);
		
		/* auto-reload preload enable */
    timer_enable(TIMER1);
}

至于定时的时间，还有待进一步研究。