程序运行不稳定可能是那些方面的原因，怎么解决？

蓝色阳光 · 发表于 2013-7-15 21:28:18

stm32程序运行不稳定可能是那些方面的原因，怎么解决？
主程序如下
#include <stm32f10x_lib.h>
#include "sys.h"
#include "usart.h"
#include "delay.h"
#include "SEG.h"
#include "led.h"
#include "BEEPER.h"
#include "key.h"
#include "exti.h"
void display(unsigned int aa,unsigned int bb,unsigned int cc,unsigned int dd)
{
    unsigned int dis_code[4][10]=
{
{0x3f0e,0x060e,0x5b0e,0x4f0e,0x660e,0x6d0e,0x7d0e,0x070e,0x7f0e,0x6f0e},//表示第一位（最高位）分别为123456789
{0xbf0d,0x860d,0xdb0d,0xcf0d,0xe60d,0xed0d,0xfd0d,0x870d,0xff0d,0xef0d},//表示百位分别为123456789，且后加点
{0x3f0b,0x060b,0x5b0b,0x4f0b,0x660b,0x6d0b,0x7d0b,0x070b,0x7f0b,0x6f0b},//表示十位分别为123456789
    {0x3f07,0x0607,0x5b07,0x4f07,0x6607,0x6d07,0x7d07,0x0707,0x7f07,0x6f07} //表示个位分别为123456789
    };
GPIOD->ODR=dis_code[0][aa];
delay_ms(1);
  GPIOD->ODR=dis_code[1][bb];
delay_ms(1);
   GPIOD->ODR=dis_code[2][cc];
delay_ms(1);
   GPIOD->ODR=dis_code[3][dd];
delay_ms(1);
}

int main(void)
{
    void display(unsigned int aa,unsigned int bb,unsigned int cc,unsigned int dd);
unsigned int i=0,j=0,k=0,t=0,a=0,b=0,n,choose=0;
Stm32_Clock_Init(9); //系统时钟设置
delay_init(72);      //延时初始化
SEG_Init();
    KEY_Init();
LED_Init();
BEPPER_Init() ;

  while(1)
  {
       do{
      if(choose==0)
      a++;
      if(a==10){b++;a=0;}
      if(b==10){i++;b=0;}
      if(i==10){j++;i=0;}
      if(j==6) {k++;j=0;}
      if(k==10){t++;k=0;}
      if(t==10){t=0;}
      /*if((i==1)&&(j==1)&&(k==0)&&(t==0))
                  BEEPER=0;
                  if((i==3)&&(j==1)&&(k==0)&&(t==0))
            BEEPER=1;*/
         n=KEY_Scan();
      display(t,k,j,i);
      }
     while(n==0);
         switch(n)
      { case 4://sw3 停止
     n=0;
      LED1=1;
      LED2=1;
      LED3=1;
     choose=0;
     break;

         case 2:
      i++;  //自加 sw4
      n=0;
      break;

      case 3:
      i--; //为case 2 是停止中断
      n=0;
      break;

      case 1:
      n=0;
      choose=1;
      LED1=0;
      LED2=0;
      LED3=0;
      break;
      }
  }
}