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#include<reg51.h>
/*******************define*************************/
#define WAIT_SALE 0 //定義1602顯示狀態
#define NO_WATER 1
#define INPUT_MONEY 2
#define SALING 3
#define CHANGE 4
#define CANCLE 5
#define NO_DATA 0
#define water_change(x, y) ((x) & (~(0x01 << y))) //宏控制水種類的切換
#define uint unsigned int
#define uchar unsigned char
unsigned char water_total[] = {10, 10, 10, 10, 10, 10, 10, 10};
unsigned char water_price[] = {1, 2, 3, 4, 5, 6, 7, 8};
uchar code wait_sale[]="for sale"; //定義所顯示的內容
uchar code no_water[] = "no water!";
uchar code price[] = "price:";
uchar code number[] = "num:";
uchar code sum[] = "SUM:";
uchar code input[] = "INPUT:";
uchar code change[] = "change:";
uchar code put_water[] = "put water...";
uchar code cancle[] = "cancle...";
unsigned char e=0x00;
sbit P2_0=P2^0; //定義接端口
sbit P2_1=P2^1;
sbit P2_2=P2^2;
sbit P2_3=P2^3;
sbit lcd_en=P3^4;
sbit rs=P3^2;
sbit rw = P3^3;
/****************************************************/
/***********************function**********************************/
/************lcd 1602*************************/
void lcd_1602_delay(uint z) //延時
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void lcd_1602_write_com(uchar com) //寫命令
{
rs=0;
rw=0;
P2=com;
lcd_1602_delay(5);
lcd_en=1;
lcd_1602_delay(5);
lcd_en=0;
}
void lcd_1602_write_data(uchar date) //寫數據
{
rs=1;
rw=0;
P2=date;
lcd_1602_delay(5);
lcd_en=1;
lcd_1602_delay(5);
lcd_en=0;
}
void lcd_1602_init() //LCD1602初始化函數
{
lcd_en=0;
lcd_1602_write_com(0x38);
lcd_1602_write_com(0x0e);
lcd_1602_write_com(0x06);
lcd_1602_write_com(0x01);
}
void lcd_1602_wait_sure() //顯示'OK'&'NO'界面
{
lcd_1602_write_com(0x80+0x40);
lcd_1602_write_data('O');
lcd_1602_write_data('K');
lcd_1602_write_com(0x80+0x4e);
lcd_1602_write_data('N');
lcd_1602_write_data('O');
}
void lcd_1602_show_num(uint num) // 1602顯示數字的函數
{
if(num <= 9)
{
lcd_1602_write_data('0'+num);
lcd_1602_write_data(' ');
}else if(num >= 10 )
{
lcd_1602_write_data('0'+num/10);
lcd_1602_write_data('0'+num%10);
}
}
void lcd1602_info_display(uint choose, uint num_type, uint num_count) //1602顯示函數
{
int num;
lcd_1602_write_com(0x01);
switch(choose)
{
case WAIT_SALE:
lcd_1602_write_com(0x80+0x03); //
for(num = 0; num < 8; num++)
{
lcd_1602_write_data(wait_sale[num]);
}
break;
case NO_WATER:
lcd_1602_write_com(0x80+0x03);
for(num = 0; num < 9; num++)
{
lcd_1602_write_data(no_water[num]);
}
break;
case SALING:
//price
lcd_1602_write_com(0x80+0x00);
for(num = 0; num < 6; num++)
{
lcd_1602_write_data(price[num]);
}
lcd_1602_write_data('0'+(num_type+1));
lcd_1602_write_data(' ');
//number
lcd_1602_write_data(' ');
for(num = 0; num < 4; num++)
{
lcd_1602_write_data(number[num]);
}
lcd_1602_show_num(num_count);
break;
case INPUT_MONEY:
//need money
lcd_1602_write_com(0x80+0x00);
for(num = 0; num < 4; num++)
{
lcd_1602_write_data(sum[num]);
}
lcd_1602_show_num(num_type);
//input
lcd_1602_write_data(' ');
lcd_1602_write_data(' ');
for(num = 0; num < 6; num++)
{
lcd_1602_write_data(input[num]);
}
lcd_1602_show_num(num_count);
break;
case CHANGE:
if(!num_count)
{
//put water
lcd_1602_write_com(0x80+0x02);
for(num = 0; num < 13; num++)
{
lcd_1602_write_data(put_water[num]);
}
}
else
{
//cancle water
lcd_1602_write_com(0x80+0x02); //取消選擇時寫命令退幣
for(num = 0; num < 9; num++)
{
lcd_1602_write_data(cancle[num]);
}
}
//change
lcd_1602_write_com(0x80+0x43);
for(num = 0; num < 7; num++)
{
lcd_1602_write_data(change[num]);
}
lcd_1602_show_num(num_type);
break;
default:
break;
}
lcd_1602_write_com(0x0c);
}
void lcd_1602_saling(uint type, uint num)
{
lcd1602_info_display(SALING, type, num);
lcd_1602_wait_sure();
}
void lcd_1602_inputing(uint need, uint input)
{
lcd1602_info_display(INPUT_MONEY, need, input);
lcd_1602_wait_sure();
}
/*************************************************/
void delay1(unsigned int t) // 延時函數
{
unsigned int i,j;
for(i=0;i<t;i++)
for(j=0;j<10;j++);
}
void out_water() //推出水函數
{
int i, j = 100;
while(j--)
{
for(i = 0; i < 8; i++)
{
P0 = water_change(0xff, i);
delay1(50);
}
}
P0 = 0xff;
}
unsigned char key(void) //按鍵響應函數
{
unsigned char key,key1,key2;
P1=0XF0;
if((P1&0XF0)!=0XF0) //ked down
{
delay1(10); //延時去抖動
if((P1&0XF0)!=0XF0) //仍然有鍵按下
{
key1=P1&0XF0; //讀入列線值
P1=0X0F;
key2=P1&0X0F;
key=key1|key2;
switch(key) //按鍵映射
{
case 0xee: e=0x00;break;
case 0xde: e=0x01;break;
case 0xbe: e=0x02;break;
case 0x7e: e=0x03; break;
case 0xed: e=0x04;break;
case 0xdd: e=0x05;break;
case 0xbd: e=0x06;break;
case 0x7d: e=0x07; break;
case 0xeb: e=0x08;break;
case 0xdb: e=0x09;break;
case 0xbb: e=0x0a;break;
case 0x7b: e=0x0b; break;
case 0xe7: e=0x0c;break;
case 0xd7: e=0x0d;break;
case 0xb7: e=0x0e;break;
case 0x77: e=0x0f; break;
}
while((P1&0X0F)!=0X0F);
delay1(10);
return 1;
}
}
return 0;
}
/*********************************************************************/
/*****************main********************************/
void main()
{
unsigned char ok = 0, water_type = -1, water_is_choose = 0;
char water_count = 0;
unsigned int flag = 0, money = 0, need_money;
lcd_1602_init();
again:
ok = 0; water_type = -1; water_count = 0; water_is_choose = 0;
flag = 0; money = 0; need_money = 0;
lcd1602_info_display(WAIT_SALE, 0, 0);
while(!ok) //choose the water and count
{
flag=key();
if(flag)
{
switch(e) //不同的按鍵進行不同的操作
{
case(0x00):
water_type++;
water_is_choose = 1;
if(water_type == 8)
{
water_type = 0;
}
P0 = water_change(0xff, water_type);
break;
case(0x01):
water_type--;
water_is_choose = 1;
if(water_type == -1 || water_type == -2)
{
water_type = 7;
}
P0 = water_change(0xff, water_type);
break;
case(0x02):
if(water_is_choose == 1)
{
water_count++;
if(water_count > water_total[water_type])
{
water_count = water_total[water_type];
}
}
break;
case(0x03):
if(water_is_choose == 1)
{
water_count--;
if(water_count < 0)
{
water_count = 0;
}
}
break;
case(0x0e): // 返回
goto again;
break;
case(0x0f): // 確認
if(water_is_choose == 1)
{
ok=1;
}
break;
default:
break;
}
lcd_1602_saling(water_type, water_count);
}
}
//choose ok: calculate the money //計算錢的總數
need_money = water_count * water_price[water_type];
lcd_1602_inputing(need_money, money);
ok = 0;
while(!ok) //get money
{
flag=key();
if(flag)
{
switch(e)
{
case(0x04):
money=money+1;
break;
case(0x05):
money=money+5;
break;
case(0x06):
money=money+10;
break;
case(0x07):
money=money+20;
break;
case(0x08):
money=money+50;
break;
case(0x09):
money=money+100;
break;
case(0x0e): //back lcd1602_info_display(CHANGE, money, CANCLE);
P0 = 0xff;
delay1(50000);
……………………
…………限于本文篇幅余下代碼請從51黑下載附件…………

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