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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit rs=P2^0;
sbit rw=P2^1;
sbit e=P2^2;
sbit key1=P1^0;
sbit key2=P1^1;
sbit key3=P1^2;
sbit sounder=P3^7;
uchar prompt1[]="Your No.is 00!";
uchar prompt2[]="No.00 Go To Win.0";
uchar prompt3[]="Queue is full ";
uchar prompt4[]="Queue is empty !";
uint num_count=0; //排隊叫的號碼
uint rank_number[20]={0}; //排隊叫號存儲的數(shù)組
uint num=0; //窗口消的號碼
int RankFlag=0; //叫號的標志
int ClearNumFlag=0; //消號的標志
uint LengthFlag=0; //隊列長度叫一次號時+1，消一次號時-1
/*延時函數(shù)*/
void delay(uint n)
{
while (n--);
}
/*****************************************
LCD1602 *顯示屏命令寫入函數(shù)*
*****************************************/
void LCD_write_com(uchar com)
{
e=0;
rs=0;
rw=0;
P0= com;
delay(1000);
e=1;
delay(1000);
e=0;
}
/*****************************************
LCD1602 *顯示屏數(shù)據(jù)寫入函數(shù)*
*****************************************/
void LCD_write_data(uchar dat)
{
e=0;
rs=1;
rw=0;
P0 = dat;
delay(1000);
e=1;
delay(1000);
e=0;
}
/*****************************************
LCD1602 *顯示屏清空顯示*
*****************************************/
void LCD_clear(void)
{
LCD_write_com(0x01);
delay(1000);
}
/*****************************************
LCD1602 顯示屏初始化函數(shù)
*****************************************/
void LCD_init(void)
{
// LCD_write_com(0x38); /*顯示模式設(shè)置*/
//delay(100);
// LCD_write_com(0x38);
// delay(100);
LCD_write_com(0x38);
delay(100);
//LCD_write_com(0x38);
LCD_write_com(0x08); /*顯示關(guān)閉*/
LCD_write_com(0x01); /*顯示清屏*/
LCD_write_com(0x06); /*顯示光標移動設(shè)置*/
delay(100);
LCD_write_com(0x0C); /*顯示開及光標設(shè)置*/
}
/*簡單的蜂鳴器提示音*/
void sound()
{ uint a;
for(a=0;a<500;a++)
{
delay(61);
sounder=~sounder;
}
}
/*獲取鍵值函數(shù)*/
uint sweep_key()
{
uint jianzhi;
if(key1==0)
{
delay(1000);
if(key1==0)
jianzhi=1;
RankFlag=1;
}
if(key2==0||key3==0)
{
delay(1000);
if(key2==0)
jianzhi=2;
if(key3==0)
jianzhi=3;
ClearNumFlag=1;
}
return (jianzhi);
}
/*****************************************
叫號機按一次一號鍵變量+1，最大為20
*****************************************/
void QueueNumProcess()
{
if(RankFlag==1) //判斷叫號標志是否有效
{
if ( LengthFlag<20)
{
num_count++;
rank_number[LengthFlag] = num_count;
}
LengthFlag++;
}
}
/*****************************************
窗口消號處理函數(shù)
*****************************************/
void ClearNumProcess()
{
uint i;
if (ClearNumFlag==1) //判斷消號標志是否有效
{
num=rank_number[0]; //把消的號賦給全局變量num
for(i=0;i<19;i++) //讓數(shù)組整體左移一個存儲單元，即把消得號刪除
{
rank_number[i]=rank_number[i+1];
}
LengthFlag--;
}
}
/*****************************************
檢測到按鍵后，檢測函數(shù)處理及LCD顯示處理
*****************************************/
void CheckButtonProcess(uint m) //m代表檢測到的鍵值
{
uint jz,i;
jz=m;
if((jz==1) && (RankFlag==1))
{
// 當(dāng)隊列人數(shù)達到20時，提示
// Queue is full
if( LengthFlag>=20 )
{
LCD_clear();
LCD_write_com(0x80+0x02);
delay(100);
for(i=0;i<16;i++)
{
LCD_write_data(prompt3[i]);
delay(100);
}
}
else
{
QueueNumProcess();
prompt1[11]=(num_count)/10+'0';
prompt1[12]=(num_count)%10+'0';
LCD_clear();
LCD_write_com(0x80+02);
delay(100);
for(i=0;i<15;i++)
{
LCD_write_data(prompt1[i]); //"Your No.is 00!";
delay(100);
}
RankFlag=0;
}
}
if((jz==2||jz==3) && ClearNumFlag==1)
{
if(LengthFlag==0)
{
LCD_clear();
LCD_write_com(0x80+0);
delay(1000);
for(i=0;i<16;i++)
{
LCD_write_data(prompt4[i]);//"Queue is empty ";
delay(100);
}
delay(65535); //無人排隊時屏幕自動清屏，計數(shù)歸零
LCD_clear();
num_count=0;
}
else
{
ClearNumProcess(); //消號處理，營業(yè)員操作
sound();
prompt2[3]=num/10+'0';
prompt2[4]=num%10+'0';
prompt2[15]=(jz-1)+'0';
LCD_clear();
LCD_write_com(0x80+0);
delay(100);
for(i=0;i<16;i++)
{
LCD_write_data(prompt2[i]); //"No.00 come to No.0";
delay(100);
}
ClearNumFlag=0;
}
}
}
/*****************************************
main 函數(shù)
*****************************************/
void main()
{
uint Kvalue;
LCD_init();
while(1)
{
Kvalue=sweep_key(); //獲取鍵值
if (RankFlag==1 || ClearNumFlag==1)//判斷叫號標志和消號標志是否有效
CheckButtonProcess(Kvalue);
delay(200);
RankFlag=0; //使叫號標志無效
ClearNumFlag=0; //使消號標志無效
Kvalue=0; //鍵值清0
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