GD32單片機(jī)配置兩個(gè)定時(shí)器中斷時(shí)只有一個(gè)定時(shí)器會(huì)工作,該怎么修改程序呢?

ID:1040297 · 發(fā)表于 2023-1-25 21:53

timer.c

#include "timer.h"
#include "gd32f10x.h"
#include "usart0.h"
#include "systick.h"
#include "led.h"

extern unsigned int seconds;

void timer5_init(void)
{
      timer_parameter_struct timer_initpara;
rcu_periph_clock_enable(RCU_TIMER5);
timer_deinit(TIMER5);
timer_struct_para_init(&timer_initpara);
timer_initpara.prescaler       = 11999;          // 主頻率120M
timer_initpara.alignedmode    = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection  = TIMER_COUNTER_UP;
timer_initpara.period          = 9;
timer_initpara.clockdivision    = TIMER_CKDIV_DIV1;
timer_init(TIMER5, &timer_initpara);
timer_interrupt_flag_clear(TIMER5, TIMER_INT_FLAG_UP);
timer_interrupt_enable(TIMER5, TIMER_INT_UP);
      timer_auto_reload_shadow_enable(TIMER5);
timer_enable(TIMER5);
nvic_irq_enable(TIMER5_IRQn, 2, 3); // 配置中斷優(yōu)先級
}

void TIMER5_IRQHandler(void)
{
      if(timer_interrupt_flag_get(TIMER5, TIMER_INT_FLAG_UP))
      {
            timer_interrupt_flag_clear(TIMER5, TIMER_INT_FLAG_UP);

            if(seconds==100)
            {
                     seconds=0;
                     led1=!led1;
            }
            seconds++;
      }
}

void timer6_init(void)
{
      timer_parameter_struct timer_initpara;
rcu_periph_clock_enable(RCU_TIMER6);
timer_deinit(TIMER6);
timer_struct_para_init(&timer_initpara);
timer_initpara.prescaler       = 11999;          // 主頻率120M
timer_initpara.alignedmode    = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection  = TIMER_COUNTER_UP;
timer_initpara.period          = 9;
timer_initpara.clockdivision    = TIMER_CKDIV_DIV1;
timer_init(TIMER6, &timer_initpara);
timer_interrupt_flag_clear(TIMER6, TIMER_INT_FLAG_UP);
timer_interrupt_enable(TIMER6, TIMER_INT_UP);
timer_enable(TIMER6);
nvic_irq_enable(TIMER6_IRQn, 0, 1);
}

void TIMER6_IRQHandler(void)
{

      if(timer_interrupt_flag_get(TIMER6, TIMER_INT_FLAG_UP))
      {
            timer_interrupt_flag_clear(TIMER6, TIMER_INT_FLAG_UP);

            if(seconds==100)
            {
                     seconds=0;
                     led2=!led2;
            }
            seconds++;
      }
}

timer.h
#ifndef _TIMER_H
#define _TIMER_H

#include "gd32f10x.h"

void timer5_init(void);
void TIMER5_IRQHandler(void);
void timer6_init(void);
void TIMER6_IRQHandler(void);

#endif

主函數(shù)

unsigned int seconds;
int main(void)
{

      rcu_ahb_clock_config(RCU_AHB_CKSYS_DIV1);//AHB主頻是1分頻
      systick_config();//系統(tǒng)主頻108MHZ,采用外部晶振,由兩個(gè)宏決定(__SYSTEM_CLOCK_108M_PLL_HXTAL與HXTAL_VALUE)
      LED_Init();
  USART0_init(9600U);  //串口0 初始化函數(shù)
      timer5_init();
      timer6_init();
      nvic_priority_group_set(NVIC_PRIGROUP_PRE2_SUB2);
while(1)
{

}
}

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