#include <reg52.h>
#include <intrins.h>
/********************* 定義 ********************************/
#define LCD_data P0 //數據口
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; //液晶復位端口
sbit sset=P3^4;//設置按鈕
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
/*********************延時子函數**************************/
void delayNOP()//us延時子函數 (4.34us)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
void delayms(unsigned int ms)//ms延時子函數
{
unsigned char y;
while (ms--)
{
for (y = 0; y < 114; y++)
;
}
}
//******************檢查LCD忙狀態**************************
bit lcd_busy()//檢查LCD忙狀態 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); }
//***********************寫指令數據***********************
void lcd_wcmd(unsigned char cmd)//寫指令數據到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)//寫顯示數據到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)//顯示個位和十位數據
{
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);
}
//*********************初始化設定****************************
void lcd_init()
{
LCD_PSB = 1; //并口方式
LCD_RST = 0; //液晶復位
delayms(5); //液晶復位
LCD_RST = 1; //液晶復位
delayms(5); //液晶復位
lcd_wcmd(0x34); //擴充功能設定，擴充指令，選8位數據
delayms(5);
lcd_wcmd(0x30); //功能設定，基本指令操作，選8位數據
delayms(5);
lcd_wcmd(0x0C); //顯示開，關光標，關光標反白允許。
delayms(5);
lcd_wcmd(0x04); //光標的移動方向
delayms(5);
lcd_wcmd(0x01); //清除LCD的顯示內容
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為邊沿觸發方式
}
//*********************設定顯示位置子函數**********************
void lcd_pos(unsigned char X, unsigned char Y)//設定顯示位置
{
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***************************
void clr_screen()//清屏子函數
{
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**************************
void lcdflag()
{
lcd_wcmd(0x08); //關閉顯示
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*************************
void wr_string(unsigned char str[])//寫字符串子函數
{
unsigned char num = 0;
while (str[num])
{
lcd_wdat(str[num++]); //寫數據
}
}
//********************按鍵設置時間*************************
void keyscan()//按鍵設置時間
{
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
}
}
}
} }
//主函數主函數主函數主函數主函數主函數主函數主函數主函數主函數主函數主函數主函
void main()
{
delayms(100); //上電，等待穩定
lcd_init(); //初始化LCD
lcd_pos(1, 0); //設置顯示位置為第一行
wr_string(DIS1);
lcd_pos(2, 0); //設置顯示位置為第二行
wr_string(DIS2);
lcd_pos(3, 3); //設置顯示位置為第四行
wr_string(DIS31);
lcd_pos(3, 5); //設置顯示位置為第四行
wr_string(DIS32);
lcd_pos(3, 7); //設置顯示位置為第四行
wr_string(DIS33);
lcd_pos(4, 6); //設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); //設置顯示位置為第三行，第七列
writesmh(0x0a,hour);
} lcd_pos(3, 4); //設置顯示位置為第三行，第七列
writesmh(0x0c,minute);
}
lcd_pos(3, 6); //設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 旋轉碼開關中斷程序
{
if(INT1==1)
{
sadd=0;
sdel=1;
}
if(INT1==0)
{
sdel=0;
sadd=1;
}
}
//*********************************************************
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