SmartPDCode/control/BREAKER/driver/timer/timer.c

#include "timer.h"
#include "gd32e230_timer.h"

extern uint8_t led_flash_flag;

void timer_14_init(uint32_t arr, uint32_t psc)
{
  timer_parameter_struct timer_initpara;    //timer_initpara用于存放定时器的参数

  //使能RCU相关时钟
  rcu_periph_clock_enable(RCU_TIMER14);     //使能TIMER14的时钟

  timer_deinit(TIMER14);                    //设置TIMER14参数恢复默认值
  timer_struct_para_init(&timer_initpara);  //初始化timer_initpara

  //配置TIMER14
  timer_initpara.prescaler         = psc;               //设置预分频器值
  timer_initpara.counterdirection  = TIMER_COUNTER_UP;  //设置向上计数模式
  timer_initpara.period            = arr;               //设置自动重装载值
  timer_initpara.clockdivision     = TIMER_CKDIV_DIV1;  //设置时钟分割
  timer_init(TIMER14, &timer_initpara);                 //根据参数初始化定时器

  timer_interrupt_enable(TIMER14, TIMER_INT_UP);  //使能定时器的更新中断
  nvic_irq_enable(TIMER14_IRQn, 3);               //配置NVIC设置优先级
  timer_enable(TIMER14);                          //使能定时器
}



static uint32_t icnt = 0;
void TIMER14_IRQHandler(void)
{

	if(timer_interrupt_flag_get(TIMER14, TIMER_INT_FLAG_UP) == SET) //判断定时器更新中断是否发生
	{
		timer_interrupt_flag_clear(TIMER14, TIMER_INT_FLAG_UP);       //清除定时器更新中断标志
	}
	icnt++;
	if(icnt == 3000)
	{
		icnt = 0;
		led_flash_flag = 1;
	}
}