广工嵌入式系统课程设计——单片机售票机

        呵呵，这就是大学时期最后一个课程设计，虽然称为嵌入式系统XXX，但是用的只是51单片机。。。

 写了一下这个售票机小程序，感觉还不错，所以就贴出来跟大家分享一下。

/***************************************************
File name : 2333.c
Created date : 2013-11-19 22:43
E-mail : luhuadong@163.com
课程设计——单片机售票机（程序三）
**************************************************/

#include <reg52.h>

#define uchar unsigned char
#define uint unsigned int

typedef struct ticket //定义ticket结构体,用于存放各种票类
{
uint mode; //地点
uint price; //票价
}ticket;

sbit first = P1^5; //数码管个位
sbit second = P1^4; //数码管十位
sbit third = P1^3; //数码管百位
sbit fourth = P1^2; //数码管千位

sbit k = P1^1; //k 设置位
//共阴极数码管（正接）码表
uchar code table[11] = {0x3f,0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f, 0x00};

/******** 延时xms毫秒子函数 ********/
void delayms(uint xms)
{
uint i, j;
for(i=0; i<xms; i++)
for(j=0; j<110; j++);
}

/************ 数码管动态显示子函数 ************/
void display(uint a, uint b,uint c, uint d)
{
first = second = third = fourth = 1; //初始化关闭位选
first = 0; //显示个位
P2 = table[a];
delayms(5);
first = 1;
second = 0; //显示十位
P2 = table[b];
delayms(5);
second = 1;
third = 0; //显示百位
P2 = table[c];
delayms(5);
third = 1;
fourth = 0; //显示千位
P2 = table[d];
delayms(5);
fourth = 1;
P2 = table[10]; //关闭段选
}

/****************** 主函数 *********************/
void main()
{
uint a=0, b=0, c=0, d=0; //a,b, c, d 分别为个,十,百,千位
uchar temp = 0x00; //保存P0口状态
int flag = 0; //matrixkeyboard 标志位

ticket gz = {1, 0}; //初始化三个地点
ticket sh = {2, 0}; //(gz:广州 sh:上海 bj:北京)
ticket bj = {3, 0}; //代号分别是:1, 2, 3

uint mode = 0; //按地点分类
uint price = 0; //客户购买的单价
uint amount = 0;//客户购买的票数
uint total = 0; //客户购买的总价

while(1)
{
display(a%10, b%10, c%10, d%10);
//------------------------------------------------------------------------------------------
P1 = 0xfb; //column_1(P1.2)
P0 = 0xff;
temp = P0;
if(temp != 0xff)
{
delayms(1); //去抖动延时
temp = P0;
if(temp != 0xff)
{
switch(temp)
{
//"广州"按键
case 0x7f : if(k == 1) { mode =gz.mode ;}
if(k == 0){price = gz.price; a=b=c=d=0;}
break; //row_1
//"十位"按键
case 0xbf : b++; break; //row_2
}
flag = 1; //键盘标志位
while(flag) //等待放键程序（十分关键）
{
temp = P0;
if(temp != 0xff)
{
display(a%10, b%10, c%10,d%10);
P1 = 0xfb; //P1是键盘和数码管共用的，调用显示程序后要复位
}
else flag = 0;
}
}
}//end of scan column_1
//------------------------------------------------------------------------------------------
P1 = 0xf7; //column_2(P1.3)
P0 = 0xff;
temp = P0;
if(temp!=0xff)
{
delayms(1); //去抖动延时
temp = P0;
if(temp != 0xff)
{
switch(temp)
{
//"千位"按键
case 0x7f : d++; break; //row_1
//"上海"按键
case 0xbf : if(k == 1) { mode =sh.mode ;}
if(k == 0){price = sh.price; a=b=c=d=0;}
break; //row_2
}
flag = 1; //键盘标志位
while(flag) //等待放键程序
{
temp = P0;
if(temp != 0xff)
{
display(a%10, b%10, c%10,d%10);
P1 = 0xf7; //P1是键盘和数码管共用的，调用显示程序后要复位
}
else flag = 0;
}
}
}//end of scan column_2
//------------------------------------------------------------------------------------------

P1 = 0xef; //column_3(P1.4)
P0 = 0xff;
temp = P0;
if(temp!=0xff)
{
delayms(1); //去抖动延时
temp = P0;
if(temp != 0xff)
{
switch(temp)
{
//"个位"按键
case 0x7f : a++; break; //row_1
//"百位"按键
case 0xbf : c++; break; //row_2
}
flag = 1; //键盘标志位
while(flag) //等待放键程序
{
temp = P0;
if(temp != 0xff)
{
display(a%10, b%10, c%10,d%10);
P1 = 0xef; //P1是键盘和数码管共用的，调用显示程序后要复位
}
else flag = 0;
}
}
}//end of scan column_3
//------------------------------------------------------------------------------------------

P1 = 0xdf; //column_4(P1.5)
P0 = 0xff;
temp = P0;
if(temp!=0xff)
{
delayms(1); //去抖动延时
temp = P0;
if(temp != 0xff)
{
switch(temp)
{
//"北京"按键
case 0x7f : if(k == 1) { mode =bj.mode ;}
if(k == 0){price = bj.price; a=b=c=d=0;}
break; //row_1
//"SET"按键
case 0xbf : if(k == 1)
{
price= (a%10)+(b%10)*10+(c%10)*100+(d%10)*1000;
if(mode== gz.mode) {gz.price = price;}
elseif(mode == sh.mode) {sh.price = price;}
elseif(mode == bj.mode) {bj.price = price;}
a = b= c = d = 0; //清零
price= mode = 0;
}
if(k == 0)
{
if(price!= 0)
{
amount= (a%10)+(b%10)*10+(c%10)*100+(d%10)*1000;
total= price * amount + total;
d= (total/1000)%10;
c= (total/100)%10;
b= (total/10)%10;
a= (total/1)%10;
price= 0;
}
else
{
total= 0;
a= b = c = d = 0; //清零
}
}
break; //row_2
}
flag = 1; //键盘标志位
while(flag) //等待放键程序
{
temp = P0;
if(temp != 0xff)
{
display(a%10, b%10, c%10,d%10);
P1 = 0xdf; //P1是键盘和数码管共用的，调用显示程序后要复位
}
else flag = 0;
}
}
}//end of scan column_4
}//end of while(1)
}//end of main

/***********************************************end ***********************************************/