IAP15F2K61S2单片机数码管秒表显示

Question

#我最近在写一个IAP15F2K61S2单片机的数码管秒表程序，程序没报错也没警告，但是最后下载到单片机上运行现象不对：秒数是有，但是位置不对，而且重复出现。最右边的两个数码管总是显示0和8。

#下面分别是我的.c和.h文件

#include <stc15f2k60s2.h>

unsigned char code LedChar[] = {
    0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,
    0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E
};
unsigned char LedBuff[8] = {
    0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF
}; //数码管显示缓冲区，初值0xFF确保启动时不亮

unsigned char i = 0; //动态扫描的索引
unsigned int cnt = 0; //记录T0中断次数

void main()
{
    unsigned long sec = 0; //记录经过的秒数
    
    EA = 1;
    TMOD = 0x01;
    TH0 = 0XFC;
    TL0 = 0X67;
    ET0 = 1;
    TR0 = 1;
    
    while (1)
    {
        if (cnt >=1000)
        {
            cnt = 0;
            sec++;
            LedBuff[0] = LedChar[sec%10];
            LedBuff[1] = LedChar[sec/10%10];
            LedBuff[2] = LedChar[sec/100%10];
            LedBuff[3] = LedChar[sec/1000%10];
            LedBuff[4] = LedChar[sec/10000%10];
            LedBuff[5] = LedChar[sec/100000%10];
            LedBuff[6] = LedChar[sec/1000000%10];
            LedBuff[7] = LedChar[sec/10000000%10];
        }
    }    
}


void InterruptTime0() interrupt 1
{
    TH0 = 0xFC;
    TL0 = 0x67;
    cnt++;
    
    P0 = 0xFF;
    P27 = 1;
    P26 = 1;
    P25 = 1;
        P27 = 0;
    P26 = 0;
    P25 = 0;

    switch (i)
    {
        case 0:P0 = 0x7F; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[0]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 1:P0 = 0xBF; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[1]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 2:P0 = 0xDF; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[2]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 3:P0 = 0xEF; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[3]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 4:P0 = 0xF7; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[4]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 5:P0 = 0xFB; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[5]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 6:P0 = 0xFD; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[6]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i++; break;
        case 7:P0 = 0xFE; P27 = 1;P26 = 1;P25 = 0; P27 = 0;P26 = 0;P25 = 0;
                     P0 = LedBuff[7]; P27 = 1;P26 = 1;P25 = 1; P27 = 0;P26 = 0;P25 = 0;
               i = 0; break;             
        default: break;             
    }
    
    
}

#ifndef __STC15_H__
#define __STC15_H__
#include <stc15f2k60s2.h>

sbit P3_6 = P4^2;
sbit P3_7 = P4^4;

#endif

#用的是KEIL和ISP烧录软件

Answer 1

我已经知道问题出在哪了，很开心已经解决了，谢谢大家的热情帮助！