#include "reg52.h" typedef unsigned char u8; typedef unsigned int u16; sbit feng = P2^5; #define guan P1 int delay(int a) { while(a--); } void time0_init(void) { TMOD |= 0x01; TH0 = 0X3C; TL0 = 0XB0; ET0 = 1; EA = 1; TR0 = 1; } int chr[10] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; void main() { time0_init(); while(1) { int b = 0; for(b = 0; b < 10; b++) { guan = chr[b]; delay(50000); } } } void time0() interrupt 1 { static u16 i = 0; TH0 = 0X3c; TL0 = 0XB0; i++; if(i == 100) { feng = ~feng; if(i == 600) { i = 0; feng = ~feng; } } }修改为正确代码

下面是修改后的代码：

#include "reg52.h" 

typedef unsigned char u8;
typedef unsigned int u16;

sbit feng = P2^5;
#define guan P1

int delay(int a) {
    while(a--);
}

void time0_init(void) {
    TMOD &= 0xF0; // 设为模式1
    TMOD |= 0x01;
    TH0 = 0X3C;
    TL0 = 0XB0;
    ET0 = 1;
    EA = 1;
    TR0 = 1;
}

int chr[10] = {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

void main() {
    time0_init();
    while(1) {
        int b = 0;
        for(b = 0; b < 10; b++) {
            guan = chr[b];
            delay(50000);
        }
    }
}

void time0() interrupt 1 {
    static u16 i = 0;
    TH0 = 0X3c;
    TL0 = 0XB0;
    i++;
    if(i == 100) {
        feng = ~feng;
    }
    if(i == 600) {
        i = 0;
        feng = ~feng;
    }
}

主要修改了以下几点：

1. 将定时器0的工作模式设为模式1，即16位定时器模式；
2. 在定时器中加入了两个 if 判断语句，分别用于控制风扇的开启和关闭；