📄 text1.c
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/*用定时器0，1602液晶，设计一个数字时钟，可以由三个按钮控制调节时间*/
#include<reg52.h>
#include <intrins.h>
#include"lcd1602.h"
#include"ds18b20.h"
#define uchar unsigned char
#define uint unsigned int
#define TIMER0_COUNT 0xEE11
#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
sbit mode=P2^7;
sbit plus=P2^6;
sbit dec=P2^5;
sbit IRIN = P3^2; //红外接收器数据线
uchar IRCOM[7];
sbit LCD_RS = P1^0;
sbit LCD_RW = P1^1;
sbit LCD_EN = P1^2;
void belay(uchar x); //x*0.14MS
void belay1(int ms);
bit lcd_busy()
{
bit result;
LCD_RS = 0;
LCD_RW = 1;
LCD_EN = 1;
delayNOP();
result = (bit)(P0&0x80);
LCD_EN = 0;
return(result);
}
/*******************************************************************/
/* */
/*写指令数据到LCD */
/*RS=L，RW=L，E=高脉冲，D0-D7=指令码。 */
/* */
/*******************************************************************/
void lcd_wcmd(uchar cmd)
{
while(lcd_busy());
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
_nop_();
_nop_();
P0 = cmd;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
/*******************************************************************/
/* */
/*写显示数据到LCD */
/*RS=H，RW=L，E=高脉冲，D0-D7=数据。 */
/* */
/*******************************************************************/
void lcd_wdat(uchar dat)
{
while(lcd_busy());
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delayNOP();
LCD_EN = 1;
delayNOP();
LCD_EN = 0;
}
/*******************************************************************/
/* */
/* LCD初始化设定 */
/* */
/*******************************************************************/
void lcd_init()
{
belay1(15);
lcd_wcmd(0x38); //16*2显示，5*7点阵，8位数据
belay1(5);
lcd_wcmd(0x38);
belay1(5);
lcd_wcmd(0x38);
belay1(5);
lcd_wcmd(0x0c); //显示开，关光标
belay1(5);
lcd_wcmd(0x06); //移动光标
belay1(5);
lcd_wcmd(0x01); //清除LCD的显示内容
belay1(5);
}
/*******************************************************************/
/* */
/* 设定显示位置 */
/* */
/*******************************************************************/
void lcd_pos(uchar pos)
{
lcd_wcmd(pos | 0x80); //数据指针=80+地址变量
}
/*******************************************************************/
void belay(uchar x); //x*0.14MS
void belay1(int ms);
uchar count,s1num,timer0_tick,count=0;
typedef struct{
char hour;
char minute;
char second;
}time;
typedef struct{
uint year;
uchar month;
char day;
}date;
time now={0,0,0};
date today={2008,1,29};
char code dayofmonth[]={31,28,31,30,31,30,31,31,30,31,30,31};
char code weekday[7][4]={"MON","TUE","WED","THU","FRI","SAT","SUN"};
uchar monthday(uchar year,uchar month)
{
if(month==2 && year%4==0) //润年的2月有29天
return(29);
else
return(dayofmonth[month-1]); //非闰年时的该月份天数
}
void display_week() //由年月日计算星期
{
char days;
days=(today.day+1+2*today.month+3*(today.month+1)/5+today.year+today.year/4-today.year/100+today.year/400)%7;
display_string(&weekday[days][0]);
}
static void timer0_initialize(void) //timer0 initialize
{
EA=0; //设置不接受所有中断
timer0_tick=0;
TR0=0; //关闭Timer0
TMOD=0X01; //设置Timer0为模式2，16位工作模式
TL0=(TIMER0_COUNT & 0X00FF); //设置Timer0低八位数值
TH0=(TIMER0_COUNT >> 8); //设置Timer0高八位数值
PT1=1; //设置Timer0的优先级为最高
ET0=1; //设置接受Timer0的中断
TR0=1; //启动Timer0
EA=1; //设置系统接受中断
}
void write_time(uchar add,uchar number)
{
gotoxy(2,add);
display_data(number);
}
void write_riqi(uchar add,uchar number)
{
gotoxy(1,add);
display_data(number);
}
void keyscan()
{
uchar mode_num;
if(plus|dec==0)
{
delay(5);
if(plus|dec==0)
{ mode_num++;
while(!plus|dec);
TR0=0;
write_com(0x0f);
}
if(mode_num==1) gotoxy(1,4);
while(!mode);
if(mode_num==2) gotoxy(1,7);while(!plus|dec);
if(mode_num==3) gotoxy(1,10);while(!plus|dec);
if(mode_num==4) gotoxy(2,2);while(!plus|dec);
if(mode_num==5) gotoxy(2,5);while(!plus|dec);
if(mode_num==6) gotoxy(2,8);while(!plus|dec);
if(mode_num==7)
{
mode_num=0;
write_com(0x0c);
TR0=1;
}
}
if(mode_num!=0)
{
if(plus==0)
{
delay(5);
if(plus==0)
{
delay(5);
while(!plus);
delay(5);
if(mode_num==1)
{
today.year++;
write_riqi(1,today.year/100);
write_riqi(3,today.year%100);
gotoxy(1,12);
display_week();
gotoxy(1,4);
while(!plus);
}
if(mode_num==2)
{
today.month++;
if(today.month==13) today.month=1;
write_riqi(6,today.month);
gotoxy(1,12);
display_week();
gotoxy(1,7);
while(!plus);
}
if(mode_num==3)
{
today.day++;
if(today.day>monthday(today.year,today.month))
today.day=1;
write_riqi(9,today.day);
gotoxy(1,12);
display_week();
gotoxy(1,10);while(!plus);
}
if(mode_num==4)
{
now.hour++;
if(now.hour==24) now.hour=0;
write_time(1,now.hour);
gotoxy(2,2);
}
if(mode_num==5)
{
now.minute++;
if(now.minute==60) now.minute=0;
write_time(4,now.minute);
gotoxy(2,5);while(!plus);
}
if(mode_num==6)
{
now.second++;
if(now.second==60) now.second=0;
write_time(7,now.second);
gotoxy(2,8);while(!plus);
}
}
}
if(dec==0)
{
delay(5);
if(dec==0)
{ delay(5);
while(!dec);
delay(5);
if(mode_num==1)
{
today.year--;
write_riqi(1,today.year/100);
write_riqi(3,today.year%100);
gotoxy(1,12);
display_week();
gotoxy(1,4);while(!dec);
}
if(mode_num==2)
{
today.month--;
if(today.month==0) today.month=12;
write_riqi(6,today.month);
gotoxy(1,12);
display_week();
gotoxy(1,7);while(!dec);
}
if(mode_num==3)
{
today.day--;
if(today.day==0)
today.day=monthday(today.year,today.month);
write_riqi(9,today.day);
gotoxy(1,12);
display_week();
gotoxy(1,10);while(!dec);
}
if(mode_num==4)
{
now.hour--;
if(now.hour<0) now.hour=23;
write_time(1,now.hour);
gotoxy(2,2);while(!dec);
}
if(mode_num==5)
{
now.minute--;
if(now.minute<0) now.minute=59;
write_time(4,now.minute);
gotoxy(2,5);while(!dec);
}
if(mode_num==6)
{
now.second--;
if(now.second<0) now.second=59;
write_time(7,now.second);
gotoxy(2,8); while(!dec);
}
}
}
}
}
void display_temp()
{
uint wendu;
uchar A1,A2;
tmpchange();
wendu=tmp();
A1=wendu/10;
A2=wendu%10;
gotoxy(2,10);
display_data(A1);
display_string(".");
write_date(int_to_char[A2]);
}
void timer0(void) interrupt 1
{
TR0=0;
TL0=(TIMER0_COUNT & 0X00FF);//设置Timer0低八位数值
TH0=(TIMER0_COUNT >> 8);//设置Timer0高八位数值
TR0=1;
count++;
if(count==30) display_temp();
if(count==200)
{
count=0;
now.second++;
if(now.second==60)
{
now.second=0;
now.minute++;
if(now.minute==60)
{
now.minute=0;
now.hour++;
if(now.hour==24)
{
now.hour=0;
today.day++;
if(today.day>monthday(today.year,today.month))
{
today.day=1;
today.month++;
if(today.month==13)
{
today.month=1;
today.year++;
}
write_riqi(6,today.month);
}
write_riqi(9,today.day);
gotoxy(1,12);
display_week();
}
write_time(1,now.hour);
}
write_time(4,now.minute);
}
write_time(7,now.second);
}
}
void main()
{
IE = 0x81; //允许总中断中断,使能 INT0 外部中断
TCON = 0x01; //触发方式为脉冲负边沿触发
IRIN=1; //I/O口初始化
belay1(10);
init_lcd();
timer0_initialize();
gotoxy(1,1);
display_string("2008/06/10 ");
display_week();
gotoxy(2,1);
display_string("00:00:00");
gotoxy(2,10);
display_string("00.0C");
while(1) ;//keyscan();
}
/**********************************************************/
void belay(unsigned char x) //x*0.14MS
{
unsigned char i;
while(x--)
{
for (i = 0; i<13; i++) {}
}
}
/**********************************************************/
void belay1(int ms)
{
unsigned char y;
while(ms--)
{
for(y = 0; y<250; y++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}
/**********************************************************/
void IR_IN() interrupt 0 using 0
{
unsigned char j,k,N=0;
EX0 = 0;
belay(15);
if (IRIN==1)
{ EX0 =1;
return;
}
//确认IR信号出现
while (!IRIN) //等IR变为高电平，跳过9ms的前导低电平信号。
{belay(1);}
for (j=0;j<4;j++) //收集四组数据
{
for (k=0;k<8;k++) //每组数据有8位
{
while (IRIN) //等 IR 变为低电平，跳过4.5ms的前导高电平信号。
{belay(1);}
while (!IRIN) //等 IR 变为高电平
{belay(1);}
while (IRIN) //计算IR高电平时长
{
belay(1);
N++;
if (N>=30)
{ EX0=1;
return;} //0.14ms计数过长自动离开。
} //高电平计数完毕
IRCOM[j]=IRCOM[j] >> 1; //数据最高位补“0”
if (N>=8) {IRCOM[j] = IRCOM[j] | 0x80;} //数据最高位补“1”
N=0;
}//end for k
}//end for j
if (IRCOM[2]!=~IRCOM[3])
{ EX0=1;
return; }
IRCOM[5]=IRCOM[2] & 0x0F; //取键码的低四位
IRCOM[6]=IRCOM[2] >> 4; //右移4次，高四位变为低四位
if(IRCOM[5]>9)
{ IRCOM[5]=IRCOM[5]+0x37;}
else
IRCOM[5]=IRCOM[5]+0x30;
if(IRCOM[6]>9)
{ IRCOM[6]=IRCOM[6]+0x37;}
else
IRCOM[6]=IRCOM[6]+0x30;
lcd_pos(0x4b);
lcd_wdat(IRCOM[6]); //第一位数显示
lcd_pos(0x4c);
lcd_wdat(IRCOM[5]); //第二位数显示
EX0 = 1;
}
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