中断与数码管动态显示代码
数码管从0-999999且高位0显示
#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[] = //数码管显示字符转换表
{
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E
};
unsigned char LedBuff[] = //数码管显示缓冲区，初值为0xFF确保启动时都不亮
{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
unsigned char i = 0;//动态扫描的索引
unsigned int cnt = 0;//记录T0中断次数
unsigned char isFlag = 0;//1s标志位
void main(void)
{
unsigned long sec = 0;//记录经过的秒数
ENLED = 0;//使能U3,选择控制数码管
ADDR3 = 1;//因为需要动态改变ADDR0-2的值，所以不需要再初始化了
TMOD = 0x01;//设置T0为模式1
TH0 = 0xFC;//设置T0赋初值为0xFC67,定时1ms
TL0 = 0x67;
TR0 = 1;//启动T0
EA = 1;//使能总中断
ET0 = 1;//使能T0中断
while (1)
{
if (1 == isFlag)//判断1秒定时标志
{
isFlag = 0;//1秒定时标志清零
if (999999 == sec)
sec = 0;
else
sec++;//秒计数加1
//以下代码将sec按十进制位从低到高依次提取并转为数码管显示字符
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];
}
}
}
/* 定时器中断服务函数 */
void interrupt0 (void) interrupt 1//T0中断
{
TH0 = 0xFC;//重新赋初值
TL0 = 0x67;
cnt++;//计数值加1
if (cnt > 1000)
{
cnt = 0;//清零计数值以重新开始下一秒计时
isFlag = 1; //设置1秒定时标志位1
}
P0 = 0xFF;//显示消隐
//以下代码完成数码管动态扫描刷新
switch (i)
{
case 0: ADDR2 = 0;ADDR1 = 0;ADDR0 = 0;i++;P0 = LedBuff[0];break;
case 1: ADDR2 = 0;ADDR1 = 0;ADDR0 = 1;i++;P0 = LedBuff[1];break;
case 2: ADDR2 = 0;ADDR1 = 1;ADDR0 = 0;i++;P0 = LedBuff[2];break;
case 3: ADDR2 = 0;ADDR1 = 1;ADDR0 = 1;i++;P0 = LedBuff[3];break;
case 4: ADDR2 = 1;ADDR1 = 0;ADDR0 = 0;i++;P0 = LedBuff[4];break;
case 5: ADDR2 = 1;ADDR1 = 0;ADDR0 = 1;i = 0;P0 = LedBuff[5];break;
default:break;
}
}数码管从0-999999且高位0不显示
#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[] = //数码管显示字符转换表
{
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E
};
unsigned char LedBuff[] = //数码管显示缓冲区，初值为0xFF确保启动时都不亮
{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
unsigned char i = 0;//动态扫描的索引
unsigned int cnt = 0;//记录T0中断次数
unsigned char isFlag = 0;//1s标志位
unsigned long sec = 0;//记录经过的秒数
void main(void)
{
ENLED = 0;//使能U3,选择控制数码管
ADDR3 = 1;//因为需要动态改变ADDR0-2的值，所以不需要再初始化了
TMOD = 0x01;//设置T0为模式1
TH0 = 0xFC;//设置T0赋初值为0xFC67,定时1ms
TL0 = 0x67;
TR0 = 1;//启动T0
EA = 1;//使能总中断
ET0 = 1;//使能T0中断
while (1)
{
if (1 == isFlag)//判断1秒定时标志
{
isFlag = 0;//1秒定时标志清零
if (999999 == sec)
sec = 0;
else
sec++;//秒计数加1
//以下代码将sec按十进制位从低到高依次提取并转为数码管显示字符
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];
}
}
}
/* 定时器中断服务函数 */
void interrupt0 (void) interrupt 1//T0中断
{
TH0 = 0xFC;//重新赋初值
TL0 = 0x67;
cnt++;//计数值加1
if (cnt > 1000)
{
cnt = 0;//清零计数值以重新开始下一秒计时
isFlag = 1; //设置1秒定时标志位1
}
P0 = 0xFF;//显示消隐
//以下代码完成数码管动态扫描刷新
switch (i)
{
case 0: if (sec >= 0){ADDR2 = 0;ADDR1 = 0;ADDR0 = 0;P0 = LedBuff[0];}i++;break;
case 1: if (sec >= 10){ADDR2 = 0;ADDR1 = 0;ADDR0 = 1;P0 = LedBuff[1];}i++;break;
case 2: if (sec >= 100){ADDR2 = 0;ADDR1 = 1;ADDR0 = 0;P0 = LedBuff[2];}i++;break;
case 3: if (sec >= 1000){ADDR2 = 0;ADDR1 = 1;ADDR0 = 1;P0 = LedBuff[3];}i++;break;
case 4: if (sec >= 10000){ADDR2 = 1;ADDR1 = 0;ADDR0 = 0;P0 = LedBuff[4];}i++;break;
case 5: if (sec >= 100000){ADDR2 = 1;ADDR1 = 0;ADDR0 = 1;P0 = LedBuff[5];}i = 0;break;
default:break;
}
}数码管从999999-0且高位0显示
#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[] = //数码管显示字符转换表
{
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E
};
unsigned char LedBuff[] = //数码管显示缓冲区，初值为0xFF确保启动时都不亮
{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
unsigned char i = 0;//动态扫描的索引
unsigned int cnt = 0;//记录T0中断次数
unsigned char isFlag = 0;//1s标志位
void main(void)
{
unsigned long sec = 999999;//秒数
ENLED = 0;//使能U3,选择控制数码管
ADDR3 = 1;//因为需要动态改变ADDR0-2的值，所以不需要再初始化了
TMOD = 0x01;//设置T0为模式1
TH0 = 0xFC;//设置T0赋初值为0xFC67,定时1ms
TL0 = 0x67;
TR0 = 1;//启动T0
EA = 1;//使能总中断
ET0 = 1;//使能T0中断
while (1)
{
if (1 == isFlag)//判断1秒定时标志
{
isFlag = 0;//1秒定时标志清零
if (0 == sec)
sec = 999999;
else
sec--;//秒计数减1
//以下代码将sec按十进制位从低到高依次提取并转为数码管显示字符
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];
}
}
}
/* 定时器中断服务函数 */
void interrupt0 (void) interrupt 1//T0中断
{
TH0 = 0xFC;//重新赋初值
TL0 = 0x67;
cnt++;//计数值加1
if (cnt > 1000)
{
cnt = 0;//清零计数值以重新开始下一秒计时
isFlag = 1; //设置1秒定时标志位1
}
P0 = 0xFF;//显示消隐
//以下代码完成数码管动态扫描刷新
switch (i)
{
case 0: ADDR2 = 0;ADDR1 = 0;ADDR0 = 0;i++;P0 = LedBuff[0];break;
case 1: ADDR2 = 0;ADDR1 = 0;ADDR0 = 1;i++;P0 = LedBuff[1];break;
case 2: ADDR2 = 0;ADDR1 = 1;ADDR0 = 0;i++;P0 = LedBuff[2];break;
case 3: ADDR2 = 0;ADDR1 = 1;ADDR0 = 1;i++;P0 = LedBuff[3];break;
case 4: ADDR2 = 1;ADDR1 = 0;ADDR0 = 0;i++;P0 = LedBuff[4];break;
case 5: ADDR2 = 1;ADDR1 = 0;ADDR0 = 1;i = 0;P0 = LedBuff[5];break;
default:break;
}
}数码管从999999-0且高位0不显示
#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[] = //数码管显示字符转换表
{
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E
};
unsigned char LedBuff[] = //数码管显示缓冲区，初值为0xFF确保启动时都不亮
{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
unsigned char i = 0;//动态扫描的索引
unsigned int cnt = 0;//记录T0中断次数
unsigned char isFlag = 0;//1s标志位
unsigned long sec = 999999;//秒数
void main(void)
{
ENLED = 0;//使能U3,选择控制数码管
ADDR3 = 1;//因为需要动态改变ADDR0-2的值，所以不需要再初始化了
TMOD = 0x01;//设置T0为模式1
TH0 = 0xFC;//设置T0赋初值为0xFC67,定时1ms
TL0 = 0x67;
TR0 = 1;//启动T0
EA = 1;//使能总中断
ET0 = 1;//使能T0中断
while (1)
{
if (1 == isFlag)//判断1秒定时标志
{
isFlag = 0;//1秒定时标志清零
if (0 == sec)
sec = 999999;
else
sec--;//秒计数减1
//以下代码将sec按十进制位从低到高依次提取并转为数码管显示字符
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];
}
}
}
/* 定时器中断服务函数 */
void interrupt0 (void) interrupt 1//T0中断
{
TH0 = 0xFC;//重新赋初值
TL0 = 0x67;
cnt++;//计数值加1
if (cnt > 1000)
{
cnt = 0;//清零计数值以重新开始下一秒计时
isFlag = 1; //设置1秒定时标志位1
}
P0 = 0xFF;//显示消隐
//以下代码完成数码管动态扫描刷新
switch (i)
{
case 0: if (sec >= 0){ADDR2 = 0;ADDR1 = 0;ADDR0 = 0;P0 = LedBuff[0];}i++;break;
case 1: if (sec >= 10){ADDR2 = 0;ADDR1 = 0;ADDR0 = 1;P0 = LedBuff[1];}i++;break;
case 2: if (sec >= 100){ADDR2 = 0;ADDR1 = 1;ADDR0 = 0;P0 = LedBuff[2];}i++;break;
case 3: if (sec >= 1000){ADDR2 = 0;ADDR1 = 1;ADDR0 = 1;P0 = LedBuff[3];}i++;break;
case 4: if (sec >= 10000){ADDR2 = 1;ADDR1 = 0;ADDR0 = 0;P0 = LedBuff[4];}i++;break;
case 5: if (sec >= 100000){ADDR2 = 1;ADDR1 = 0;ADDR0 = 1;P0 = LedBuff[5];}i = 0;break;
default:break;
}
}本文来自博客园，作者：EricsT，转载请注明原文链接：https://www.cnblogs.com/EricsT/p/18535183
