单片机c语言数码管显示子程序,单片机左右流水灯与数码管动态显示C程序

单片机c语言数码管显示子程序,单片机左右流水灯与数码管动态显示C程序"/>

单片机c语言数码管显示子程序,单片机左右流水灯与数码管动态显示C程序

/*

*功能：用定时器0实现定时200毫秒流水灯,

*    同时用定时器1实现动态显示654321，

*    且蜂鸣器发声；

*日期：2014-03-24

*作者：徐冉

*注意事项：若打开两个定时器时，必须使用两个定时器，

*     否则两个定时器都不工作！！！

**/

/**********AT89C52-RC 51hei单片机实验板**************/

/*************51hei-开发板*********************/

#include typedef unsigned int uint;

typedef unsigned char uchar;

sbit wela = P2^7;  //数码管位声明

sbit dula = P2^6; //数码管段选声明

sbit FM = P2^3;//蜂鸣器声明

uchar counter = 0, counter1 = 0, j = 0, flag = 0, flag1 = 0;

uchar num = 6, num1 = 0;

//数码管段选编码

uchar code table_du [] = {

0x3F,  //"0"

0x06,  //"1"

0x5B,  //"2"

0x4F,  //"3"

0x66,  //"4"

0x6D,  //"5"

0x7D,  //"6"

0x07,  //"7"

0x7F,  //"8"

0x6F,  //"9"

0x77,  //"A"

0x7C,  //"B"

0x39,  //"C"

0x5E,  //"D"

0x79,  //"E"

0x71,  //"F"

0x76,  //"H"

0x38,  //"L"

0x37,  //"n"

0x3E,  //"u"

0x73,  //"P"

0x5C,  //"o"

0x40,  //"-"

0x00,  //熄灭

0x00  //自定义

};

//数码管位选编码

uchar code table_we[] = {

0xfe,

0xfd,

0xfb,

0xf7,

0xef,

0xdf

};

void init();

void display();

void main()

{

init();

while(1)

{

if(counter1 == 30)

{

counter1 = 0;

display();

num--;

num1++;

if(num == 0)

{

num = 6;

}

if(num1 == 6)

{

num1 = 0;

}

}

if(counter == 200)//定时到4秒后，流水灯向右流动

{

counter = 0;//counter清零，

//关闭定时器0

TR0 = 0;

//ET0 = 0;

flag = 1; //标志变量置1后，定时器重新初始化

TH0 = 0xB8; //定时器0定时20毫秒

TL0 = 0x00;

TR0 = 1;   //重新打开定时器0

//ET0 = 1;

j = 0;

}

}

}[page]

//定时器初始化程序

void init()

{

//定时器0和定时器1初始化函数

TMOD = 0x11;//定义定时器1和0在工作方式1下

TH0 = 0xB8; //定时器0定时20毫秒

TL0 = 0x00;

TH1 = 0xFC; //定时器1定时20毫秒

TL1 = 0x67;

TR0 = 1;   //打开定时器0

TR1 = 1;   //打开定时器1

EA = 1; //打开总中断

ET0 = 1;  //打开定时器0中断

ET1 = 1;  //打开定时器1中断

}

//数码管显示子程序

void display()

{

dula = 1;

P0 = table_du[num];

dula = 0;

P0 = 0xff;

wela = 1;

P0 = table_we[num1];

wela = 0;

dula = 1;

P0 = table_du[num];

dula = 0;

P0 = 0xff;

wela = 1;

P0 = table_we[num1];

wela = 0;

dula = 1;

P0 = table_du[num];

dula = 0;

P0 = 0xff;

wela = 1;

P0 = table_we[num1];

wela = 0;

dula = 1;

P0 = table_du[num];

dula = 0;

P0 = 0xff;

wela = 1;

P0 = table_we[num1];

wela = 0;

dula = 1;

P0 = table_du[num];

dula = 0;

P0 = 0xff;

wela = 1;

P0 = table_we[num1];

wela = 0;

dula = 1;

P0 = table_du[num];

dula = 0;

P0 = 0xff;

wela = 1;

P0 = table_we[num1];

wela = 0;

}

//中断定时器0

void int_time0() interrupt 1

{

TH0 = 0xB8;

TL0 = 0x00;

counter++;

if(flag == 0)

{

if(counter % 10 == 0)//定时200毫秒

{

P1 = ~(1 << j++);//流水灯左移流动

if(j == 8)

{

j = 0;

}

}

}

else

{

if(counter % 5 == 0)

{

//counter = 0;

//流水灯右移流动

P1 = ~(0x80 >> j++);

FM = ~FM;

if(j == 8)

j = 0;

}

}

}

//中断定时器1

void int_time1() interrupt 3

{

TH1 = 0xFC;

TL1 = 0x67;

counter1++;

}