📄 intelligent_thermometer.c
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/*智能型温度感测器:
(1)8051的PORT1连接LCD显示器，PORT3的P3.3,P3.4,P3.5分别连接到LCD控制线，程序执行时可以在LCD显示器显示时间和日期
(2)温度感应组件AD590通过ADC0804将感应到的温度转换数字数据，然后通过PORT0输入8051
(3)8051的第10只和第11只引脚RXD和TXD分别连接到MAX232，然后连接到PC的COM端口
(4)8051实验板每小时读入ADC0804转换的数字温度数据，然后记录在串行EEPROM93C66中
(5)8051实验板可以通过RS232将记录在串行EEPROM93C66中数字温度数据传送到PC端
*/
#include<regx51.h>
#include<lcd.h>
#define XTAL 11059200
#define baudrate 9600
#define TIMES 25
#define TIMER0_COUNT 0xD8F0//10000-((12000000/(12*100))
//数字时钟的工作模式
#define SET 11
#define TRUE 1
#define FALSE 0
#define putchar write_LCD_data
#define adc_in P0
#define adc_rd P3_7
#define adc_wr P3_6
//
#define mode_button P2_7
#define operation_button P2_6
#define up_button P2_5
#define down_button P2_4
//
typedef struct
{
char hour;
char minute;
char second;
}time;
typedef struct
{
char year;
char month;
char day;
}date;
time now={23,59,0},display;
date today={04,12,15},tmpday;
static unsigned timer0_tick=100,mode=0,operation;
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"};
char code int2char[]="0123456789";
unsigned char txOK,c,set_time;
int AT93C66_add,send_count;
//0表示不记录在AT93C66中，1表示要记录在AT93C66中
unsigned char temp_wr;
/*****AT93C66的读写程序*************/
unsigned char read_byte(int);
void write_byte(int,unsigned char);
void delay(void)
{
unsigned char i,j;
for(i=0;i<125;i++)
for(j=0;j<255;j++)
;
}
void display_tempreture(unsigned char number)
{
unsigned char x,y;
y=(number<<1)-232;
x=y/10;
gotoxy(1,9);
write_LCD_data(int2char[x]);
x=y%10;
write_LCD_data(int2char[x]);
if(temp_wr==1)
{
write_byte(AT93C66_add,y);
if(AT93C66_add>255)
{
write_byte(0,1);
x=AT93C66_add-256;
write_byte(1,x);
}
else
write_byte(1,(unsigned char)AT93C66_add);
temp_wr=0;
AT93C66_add++;
}
}
void display_time(void)
{
gotoxy(1,0);
display_LCD_number(display.hour);
display_LCD_string(":");
display_LCD_number(display.minute);
display_LCD_string(":");
display_LCD_number(display.second);
}
void display_date()
{
char i,days=4;
gotoxy(2,2);
display_LCD_number(tmpday.year);
display_LCD_string("/");
display_LCD_number(tmpday.month);
display_LCD_string("/");
display_LCD_number(tmpday.day);
display_LCD_string(" ");
if(tmpday.month>1)
for(i=0;i<=tmpday.month-2;i++)
days+=(dayofmonth[i]%7);
if(tmpday.year!=0)days+=((tmpday.year-1)/4)+tmpday.year+1;
if(tmpday.year%4==0&&tmpday.month>2)days++;
days=(days+tmpday.day)%7;
display_LCD_string(&weekday[days][0]);
}
char monthday(char year,char month)
{
if(month==2&&year%4==0)
return(29);
else
return(dayofmonth[month-1]);
}
static void timer0_isr(void) interrupt TF0_VECTOR using 1
{
TR0=0;
TL0=(TIMER0_COUNT&0x00FF);
TH0=(TIMER0_COUNT>>8);
TR0=1;
if(mode==1)return;
if(--timer0_tick)return;
timer0_tick=100;
now.second++;
if(now.second==60)
{
now.second=0;
now.minute++;
if(now.minute==60)
{
now.minute=0;
adc_wr=0;
now.hour++;
adc_wr=1;
temp_wr=1;
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++;
}
}
tmpday=today;
display_date();
}
}
}
display=now;
display_time();
}
static void timer0_initialize(void)
{
EA=0;
TR0=0;
TMOD&=0xF0;
TMOD|=0x01;
TL0=(TIMER0_COUNT&0x00FF);
TH0=(TIMER0_COUNT>>8);
PT0=0;
ET0=1;
TR0=1;
EA=1;
}
static void int0_isr(void) interrupt 0 using 0
{
unsigned char voltage;
adc_in=0xFF;
adc_rd=0;
voltage=voltage<<1;
adc_rd=1;
display_tempreture(voltage);
}
static void com_isr(void) interrupt SIO_VECTOR using 1
{
if(TI)
{
TI=0;
if(send_count<AT93C66_add)
{
SBUF=read_byte(send_count)+32;//传输数据
send_count++;
}
}
}
void com_initialize(void)
{
PCON|=0x80;
TMOD=0x20;
TH1=(unsigned char)(256-(XTAL/(16L*12L*baudrate)));
TR1=(unsigned char)(256-(XTAL/(16L*12L*baudrate)));
SCON=0x50;
ES=1;
TR1=1;
}
char gotkey()
{
if(mode_button==0)
{
delay();
if(mode_button==0)return(0);
}
if(operation_button==0)
{
delay();
if(operation_button==0)
return(1);
}
if(up_button==0)
{
delay();
if(up_button==0)return(2);
}
if(down_button==0)
{
delay();
if(down_button==0)
return(3);
}
return(15);
}
void main(void)
{
char keys;
txOK=1;
mode=0;
operation=0;
init_LCD();
clear_LCD();
gotoxy(2,0);
display_LCD_string("20");
display=now;
display_time();
tmpday=today;
display_date();
EA=1;
com_initialize();
IT0=1;
EX0=1;
adc_wr=0;
adc_wr=1;
do
{
keys=gotkey();
switch(keys)
{
case 0:
mode++;
if(mode==4)mode=0;
gotoxy(1,12);
write_LCD_data(int2char[mode]);
if(mode==1)
{
display=now;
tmpday=today;
}
if(mode==2)
{
now=display;
today=tmpday;
}
break;
case 1:
if(mode==0)break;
if(mode==1)
{
operation++;
if(operation==5)operation=0;
}
if(mode==2)
{
send_count=1;
SBUF=read_byte(0)+32;//传输数据
}
if(mode==3)
{
write_byte(0,0);
write_byte(0,0);
write_byte(1,6);
write_byte(2,today.year);
write_byte(3,today.month);
write_byte(4,today.day);
write_byte(5,now.hour);
AT93C66_add=6;
adc_wr=0;
temp_wr=1;
adc_wr=1;
}
gotoxy(1,14);
write_LCD_data(int2char[operation]);
break;
case 2:
if(mode!=1)break;
switch(operation)
{
case 0:
display.hour++;
if(display.hour>=24)
display.hour=0;
gotoxy(1,0);
display_LCD_number(display.hour);
break;
case 1:
display.minute++;
if(display.minute>=60)
display.minute=0;
gotoxy(1,3);
display_LCD_number(display.minute);
break;
case 2:
tmpday.year++;
if(tmpday.year>=100)
tmpday.year=0;
display_date();
break;
case 3:
tmpday.month++;
if(tmpday.month>12)
tmpday.month=1;
display_date();
break;
case 4:
tmpday.day++;
if(tmpday.day>monthday(tmpday.year,tmpday.month))
tmpday.day=1;
display_date();
break;
}
break;
case 3:
if(mode!=1)break;
switch(operation)
{
case 0:
display.hour--;
if(display.hour<0)display.hour=23;
gotoxy(1,0);
display_LCD_number(display.hour);
break;
case 1:
display.minute--;
if(display.minute<0)
display.minute=59;
gotoxy(1,3);
display_LCD_number(display.minute);
break;
case 2:
tmpday.year--;
if(tmpday.year<0)tmpday.year=99;
display_date();
break;
case 3:
tmpday.month--;
if(tmpday.month<1)tmpday.month=12;
display_date();
break;
case 4:
tmpday.day--;
if(tmpday.day<1)
tmpday.day=monthday(tmpday.year,tmpday.month);
display_date();
break;
}
}
}while(1);
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