定时器与数码管之代码

眸胝发表于 2025-6-9 11:01:19

小灯以1s间隔闪烁

#include <reg52.h>

sbit LED = P0 ^ 0;

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;

sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
unsigned char cnt;//溢出次数

//74HC138使能
ENLED = 0;
ADDR3 = 1;

//Q16导通
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;

LED = 0;//点亮小灯

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0

while (1)
{
//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
LED = ~LED;//小灯状态相反
cnt = 0;
}
}
}
}流水灯左跑，间隔1s[写法1]

#include <reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;

sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

int POW(int m)
{
int i;
int iRet;
iRet = 1;
for (i = 0; i < m; i++)
iRet = iRet * 2;
return iRet;
}

void main(void)
{
unsigned char cnt;//溢出次数
int count;

//74HC138使能
ENLED = 0;
ADDR3 = 1;

//Q16导通
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0
count = 0;

while (1)
{

//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
if (8 == count)
count = 0;

P0 = 0xFF ^ POW(count);

count++;
cnt = 0;
}
}
}
}流水灯左跑，间隔1s[写法2]

由于此板子上的P1口的默认值是0xFF，即每一位的默认值都是高电平
也就是说，给板子重新上电时，P1的每一位都是高电平
故此时ADDR3、ADDR2以及ADDR1默认为高电平
故只需设置ENLED以及ADDR0为低电平即可
#include <reg52.h>

sbit ADDR0 = P1 ^ 0;
//sbit ADDR1 = P1 ^ 1;
//sbit ADDR2 = P1 ^ 2;

//sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

int POW(int m)
{
int i;
int iRet;
iRet = 1;
for (i = 0; i < m; i++)
iRet = iRet * 2;
return iRet;
}

void main(void)
{
unsigned char cnt;//溢出次数
int count;

//74HC138使能
ENLED = 0;
// ADDR3 = 1;

//Q16导通
// ADDR2 = 1;
// ADDR1 = 1;
ADDR0 = 0;

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0
count = 0;

while (1)
{

//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
if (8 == count)
count = 0;

P0 = 0xFF ^ POW(count);

count++;
cnt = 0;
}
}
}
}流水灯左跑，间隔1s[写法3][不采用位寻址]

P1口有8位，每一位都是默认1，故P1初始值为0x11111111即0xFF
设置P1的第0位和第4位为0，则此时P1的值为0x11101110即0xEE
#include <reg52.h>

int POW(int m)
{
int i;
int iRet;
iRet = 1;
for (i = 0; i < m; i++)
iRet = iRet * 2;
return iRet;
}

void main(void)
{
unsigned char cnt;//溢出次数
int count;

//Q16导通
P1 = 0xEE;

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0
count = 0;

while (1)
{

//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
if (8 == count)
count = 0;

P0 = 0xFF ^ POW(count);

count++;
cnt = 0;
}
}
}
}以下流水灯相关代码都有3种写法，同流水灯左跑一致，均采用第一种写法
流水灯右跑，间隔1s

#include <reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;

sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

int POW(int m)
{
int i;
int iRet;
iRet = 1;
for (i = 0; i < m; i++)
iRet = iRet * 2;
return iRet;
}

void main(void)
{
unsigned char cnt;//溢出次数
int count;

//74HC138使能
ENLED = 0;
ADDR3 = 1;

//Q16导通
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0
count = 7;

while (1)
{

//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
P0 = 0xFF ^ POW(count);

if (0 == count)
count = 8;

count--;
cnt = 0;
}
}
}
}流水灯左跑后右跑[间隔1s]

#include <reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;

sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

int POW(int m)
{
int i;
int iRet;
iRet = 1;
for (i = 0; i < m; i++)
iRet = iRet * 2;
return iRet;
}

void main(void)
{
unsigned char cnt;//溢出次数
int count;
int iflag;//iflag = 0时，左跑，iflag = 1时，右跑

//74HC138使能
ENLED = 0;
ADDR3 = 1;

//Q16导通
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0
count = 0;
iflag = 0;

while (1)
{

//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
if(0 == iflag)
{
if (8 == count)
{
count = 6;
iflag = 1;
}
}
else
{
if (0 == count)
iflag = 0;
}

P0 = 0xFF ^ POW(count);

if (0 == iflag)
count++;
else
count--;

cnt = 0;
}
}
}
}流水灯右跑后左跑[间隔1s]

#include <reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;

sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

int POW(int m)
{
int i;
int iRet;
iRet = 1;
for (i = 0; i < m; i++)
iRet = iRet * 2;
return iRet;
}

void main(void)
{
unsigned char cnt;//溢出次数
int count;
int iflag;//iflag = 0时，左跑，iflag = 1时，右跑

//74HC138使能
ENLED = 0;
ADDR3 = 1;

//Q16导通
ADDR2 = 1;
ADDR1 = 1;
ADDR0 = 0;

TMOD = 1;//设置T0为模式1

//设置T0初始值
TH0 = 0x4C;
TL0 = 0x00;

TR0 = 1;//启动T0

cnt = 0;//设置溢出次数为0
count = 7;
iflag = 1;

while (1)
{

//溢出
if (1 == TF0)
{
cnt++;

//T0初始化
TF0 = 0;

TH0 = 0x4C;
TL0 = 0x00;

//溢出1s
if (cnt >= 20)
{
if(0 == iflag)
{
if (8 == count)
{
count = 6;
iflag = 1;
}
}
else
{
if (0 == count)
iflag = 0;
}

P0 = 0xFF ^ POW(count);

if (0 == iflag)
count++;
else
count--;

cnt = 0;
}
}
}
}数码管显示数字0

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xC0;//数码管abcdef段亮，即显示0

while(1)
;
}数码管显示数字1

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xF9;//数码管bc段亮，即显示1

while(1)
;
} 数码管显示数字2

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xA4;//数码管abged段亮，即显示2

while(1)
;
} 数码管显示数字3

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xB0;//数码管abgcd段亮，即显示3

while(1)
;
} 数码管显示数字4

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x99;//数码管fgbc段亮，即显示4

while(1)
;
} 数码管显示数字5

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x92;//数码管afgcd段亮，即显示5

while(1)
;
} 数码管显示数字6

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x82;//数码管afgcde段亮，即显示6

while(1)
;
} 数码管显示数字7

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xF8;//数码管abc段亮，即显示7

while(1)
;
} 数码管显示数字8

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x80;//数码管abcdefg段亮，即显示8

while(1)
;
} 数码管显示数字9

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x90;//数码管abcdfg段亮，即显示9

while(1)
;
} 数码管显示字母A

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x88;//数码管abcefg段亮，即显示A

while(1)
;
} 数码管显示字母b

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x83;//数码管cdefg段亮，即显示b

while(1)
;
} 数码管显示字母C

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xC6;//数码管afed段亮，即显示C

while(1)
;
} 数码管显示字母d

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0xA1;//数码管bcdef段亮，即显示d

while(1)
;
} 数码管显示字母E

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x86;//数码管adefg段亮，即显示E

while(1)
;
} 数码管显示字母F

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

void main(void)
{
//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

P0 = 0x8E;//数码管aefg段亮，即显示F

while(1)
;
}数码管正向计时[间隔1s][从0到9]

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

unsigned char code LedChar[] =
{
0xC0, 0xF9, 0xA4, 0xB0, 0x99,
0x92, 0x82, 0xF8, 0x80, 0x90
};

void main(void)
{
unsigned cnt;//溢出次数
int sec;//秒

//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

TMOD = 1;//To设置为模式0

//设置T0初始值
TH0 = 0xB4;
TL0 = 0x00;

TR0 = 1;//启动T0
cnt = 0;
sec = 0;

while(1)
{
if (1 == TF0)//溢出
{
//设置T0初始值
TF0 = 0;
TH0 = 0xB4;
TL0 = 0x00;

cnt++;

//溢出1s
if (cnt >= 20)
{
cnt = 0;

if (10 == sec)
sec = 0;

P0 = LedChar;
sec++;
}
}
}
}数码管倒计时[间隔1s][从9到0]

#include<reg52.h>

sbit ADDR0 = P1 ^ 0;
sbit ADDR1 = P1 ^ 1;
sbit ADDR2 = P1 ^ 2;
sbit ADDR3 = P1 ^ 3;
sbit ENLED = P1 ^ 4;

unsigned char code LedChar[] =
{
0xC0, 0xF9, 0xA4, 0xB0, 0x99,
0x92, 0x82, 0xF8, 0x80, 0x90
};

void main(void)
{
unsigned cnt;//溢出次数
int sec;//秒

//74HC138使能
ENLED = 0;
ADDR0 = 1;

//Q7导通
ADDR2 = 1;
ADDR1 = 0;
ADDR0 = 1;

TMOD = 1;//To设置为模式0

//设置T0初始值
TH0 = 0xB4;
TL0 = 0x00;

TR0 = 1;//启动T0
cnt = 0;
sec = 9;

while(1)
{
if (1 == TF0)//溢出
{
//设置T0初始值
TF0 = 0;
TH0 = 0xB4;
TL0 = 0x00;

cnt++;

//溢出1s
if (cnt >= 20)
{
cnt = 0;

P0 = LedChar;

if (0 == sec)
sec = 10;

sec--;
}
}
}
}
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定时器与数码管之代码