#include <reg52.h>
#include <intrins.h>
/********************* 定義 ********************************/
#define LCD_data P0 //數(shù)據(jù)口
sbit LCD_RS = P2 ^ 0; //寄存器選擇輸入
sbit LCD_RW = P2 ^ 1; //液晶讀/寫控制
sbit LCD_EN = P2 ^ 2; //液晶使能控制
sbit LCD_PSB = P2 ^ 3; //串/并方式控制
sbit LCD_RST = P2 ^ 5; //液晶復(fù)位端口
sbit sset=P3^4;//設(shè)置按鈕
sbit spk=P1^4;
sbit sadd=P2^7;
sbit sdel=P2^6;
signed char second=0,minute=0,hour=0,count=0,keycount=0;
signed char key=0;
unsigned char code DIS1[] =
{
"距離系統(tǒng)爆炸時間"
};
unsigned char code DIS2[] =
{
"還剩："
};
unsigned char code DIS31[] =
{
"時"
};
unsigned char code DIS32[] =
{
"分"
}; unsigned char code DIS33[] =
{
"秒"
};
unsigned char code DIS4[] =
{
"周林"
};
unsigned char code table2[]="0123456789";
char code reserve[3]_at_ 0x3b; //保留0x3b開始的3個字節(jié)
/*********************延時子函數(shù)**************************/
void delayNOP()//us延時子函數(shù) (4.34us)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
void delayms(unsigned int ms)//ms延時子函數(shù)
{
unsigned char y;
while (ms--)
{
for (y = 0; y < 114; y++)
;
}
}
//******************檢查LCD忙狀態(tài)**************************
bit lcd_busy()//檢查LCD忙狀態(tài) 1忙，0閑
{
bit result;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
delayNOP();
result = (bit)(P0 &0x80);
LCD_EN = 0;
return (result); }
//***********************寫指令數(shù)據(jù)***********************
void lcd_wcmd(unsigned char cmd)//寫指令數(shù)據(jù)到LCD
{
while (lcd_busy())
{
;
}
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 1;
P0 = cmd;
delayNOP();
LCD_EN = 0;
}
void lcd_wdat(unsigned char dat)//寫顯示數(shù)據(jù)到LCD
{
while (lcd_busy())
;
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 1;
P0 = dat;
delayNOP();
LCD_EN = 0;
}
void writesmh(unsigned char add,unsigned char date)//顯示個位和十位數(shù)據(jù)
{
unsigned char shi,ge;
shi=date/10;
ge=date%10;
lcd_wcmd(0x80+add);
delayms(5);
lcd_wdat(table2[shi]);
delayms(5);
lcd_wdat(table2[ge]);
delayms(5);
}
//*********************初始化設(shè)定****************************
void lcd_init()
{
LCD_PSB = 1; //并口方式
LCD_RST = 0; //液晶復(fù)位
delayms(5); //液晶復(fù)位
LCD_RST = 1; //液晶復(fù)位
delayms(5); //液晶復(fù)位
lcd_wcmd(0x34); //擴充功能設(shè)定，擴充指令，選8位數(shù)據(jù)
delayms(5);
lcd_wcmd(0x30); //功能設(shè)定，基本指令操作，選8位數(shù)據(jù)
delayms(5);
lcd_wcmd(0x0C); //顯示開，關(guān)光標(biāo)，關(guān)光標(biāo)反白允許。
delayms(5);
lcd_wcmd(0x04); //光標(biāo)的移動方向
delayms(5);
lcd_wcmd(0x01); //清除LCD的顯示內(nèi)容
delayms(5);
TMOD=0x01;
TH0=0x3C;
TL0=0xB0;
EA=1;
ET0=1;
TR0=0;
EX0=0; //外部中斷０允許
IT0=1; //外部中斷０為邊沿觸發(fā)方式
}
//*********************設(shè)定顯示位置子函數(shù)**********************
void lcd_pos(unsigned char X, unsigned char Y)//設(shè)定顯示位置
{
unsigned char pos;
if (X == 1)
{
X = 0x80;
}
else if (X == 2)
{
X = 0x90; }
else if (X == 3)
{
X = 0x88;
}
else if (X == 4)
{
X = 0x98;
}
pos = X + Y; //確定顯示地址
lcd_wcmd(pos); //寫顯示地址
}
//*****************清屏子函數(shù)***************************
void clr_screen()//清屏子函數(shù)
{
lcd_wcmd(0x34); //擴充指令操作
delayms(5);
lcd_wcmd(0x30); //基本指令操作
delayms(5);
lcd_wcmd(0x01); //清屏
delayms(5);
}
//******************閃爍子函數(shù)**************************
void lcdflag()
{
lcd_wcmd(0x08); //關(guān)閉顯示
delayms(500);
lcd_wcmd(0x0c); //開啟顯示
delayms(500);
lcd_wcmd(0x08);
delayms(500);
lcd_wcmd(0x0c);
delayms(500);
lcd_wcmd(0x08);
delayms(500);
lcd_wcmd(0x0c);
delayms(500);
}
//******************寫字符串子函數(shù)*************************
void wr_string(unsigned char str[])//寫字符串子函數(shù)
{
unsigned char num = 0;
while (str[num])
{
lcd_wdat(str[num++]); //寫數(shù)據(jù)
}
}
//********************按鍵設(shè)置時間*************************
void keyscan()//按鍵設(shè)置時間
{
if(sset==0)
{
delayms(10);
if(sset==0)
{
EX0=1;
keycount++;
while(sset==0)
{
;
}
if(keycount==1)
{
TR0=0; //停止計時
key=1;
keycount=2;
lcd_wcmd(0x8e);
lcd_wcmd(0x0d);//秒位閃爍
}
if(keycount==2)
{
;
}
if(keycount==3)
{ keycount=4;
lcd_wcmd(0x8c);
lcd_wcmd(0x0d);//分位閃爍
//lcd_wcmd(0x04);光標(biāo)左移一位
}
if(keycount==4)
{
;
}
if(keycount==5)
{
keycount=6;
lcd_wcmd(0x8a);
lcd_wcmd(0x0d);//時位閃爍
}
if(keycount==6)
{
;
}
if(keycount==7)
{
keycount=0;
lcd_wcmd(0x0c);//停止閃爍
TR0=1; //開始計時
EX0=1;
}
}
}
if(keycount!=0)
{
if(keycount==2)//編輯秒
{
if(sadd==0)//數(shù)值加1
{
delayms(10);
if(sadd==0)
{
second++; if(second==60)
{
second=0;
}
sadd=1;
}
writesmh(0x0e,second);
lcd_wcmd(0x8e);
lcd_wcmd(0x0d);//秒位閃爍
}
if(sdel==0)//數(shù)值減1
{
delayms(10);
if(sdel==0)
{
if(second==0)
{
second=60;
}
second--;
sdel=1;
}
writesmh(0x0e,second);
lcd_wcmd(0x8e);
lcd_wcmd(0x0d);//秒位閃爍
}
}
if(keycount==4)//編輯分鐘
{
if(sadd==0)//數(shù)值加1
{
delayms(10);;
if(sadd==0)
{
minute++;
if(minute==60)
{
minute=0; }
sadd=1;
}
writesmh(0x0c,minute);
lcd_wcmd(0x8c);
lcd_wcmd(0x0d);//分位閃爍
}
if(sdel==0)//數(shù)值減1
{
delayms(10);
if(sdel==0)
{
if(minute==0)
{
minute=60;
}
minute--;
sdel=1;
}
writesmh(0x0c,minute);
lcd_wcmd(0x8c);
lcd_wcmd(0x0d);//分位閃爍
}
}
if(keycount==6)//編輯小時
{
if(sadd==0)//數(shù)值加1
{
delayms(10);
if(sadd==0)
{
hour++;
if(hour==24)
{
minute=0;
}
sadd=1;
}
writesmh(0x0a,hour);
lcd_wcmd(0x8a);
lcd_wcmd(0x0d);//時位閃爍 }
if(sdel==0)//數(shù)值減1
{
delayms(10);
if(sdel==0)
{
if(hour==0)
{
hour=24;
}
hour--;
sdel=1;
}
writesmh(0x0a,hour);
lcd_wcmd(0x8a);
lcd_wcmd(0x0d);//時位閃爍
}
}
}
} }
//主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函數(shù)主函
void main()
{
delayms(100); //上電，等待穩(wěn)定
lcd_init(); //初始化LCD
lcd_pos(1, 0); //設(shè)置顯示位置為第一行
wr_string(DIS1);
lcd_pos(2, 0); //設(shè)置顯示位置為第二行
wr_string(DIS2);
lcd_pos(3, 3); //設(shè)置顯示位置為第四行
wr_string(DIS31);
lcd_pos(3, 5); //設(shè)置顯示位置為第四行
wr_string(DIS32);
lcd_pos(3, 7); //設(shè)置顯示位置為第四行
wr_string(DIS33);
lcd_pos(4, 6); //設(shè)置顯示位置為第四行 wr_string(DIS4);
writesmh(0x0e,second);
delayms(5);
writesmh(0x0c,minute);
delayms(5);
writesmh(0x0a,hour);
delayms(5);
while (1)
{
keyscan();
}
}
//**********************中斷***************************
void time0() interrupt 1 using 0//倒計時中斷
{
TH0=0x3C;
TL0=0xB0;
count++;
if(count==20)
{
count=0;
second--;
if(second<0)
{
second=59;
minute--;
if(minute<0)
{
minute=59;
hour--;
if(hour<0)
{
hour=24;
}
lcd_pos(3, 2); //設(shè)置顯示位置為第三行，第七列
writesmh(0x0a,hour);
} lcd_pos(3, 4); //設(shè)置顯示位置為第三行，第七列
writesmh(0x0c,minute);
}
lcd_pos(3, 6); //設(shè)置顯示位置為第三行，第七列
writesmh(0x0e,second);
if((second==0)&&(minute==0)&&(hour==0))//到點后響鈴
{
TR0=0;
spk=0;
second=0;
minute=0;
hour=0;
lcdflag();
spk=1;
}
}
}
void encoder(void) interrupt 0//外部中斷0 旋轉(zhuǎn)碼開關(guān)中斷程序
{
if(INT1==1)
{
sadd=0;
sdel=1;
}
if(INT1==0)
{
sdel=0;
sadd=1;
}
}
//*********************************************************
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