6.1 MAIN PROGRAM
#include<reg51.h>
#include “liftcontrol.h”
#include “liftapp.h”
#include “lcd.h”
#include “delay.h”
#include “visitor.h”
#include “display.h”
#include “rtc.h”
sbit sw0 =P0^0;
sbit sw1 =P0^1;
sbit sw2 =P0^2;
sbit sw3 =P0^3;
int main()
{
unsigned char time[]=” : : “; //buff for storing time
unsigned char date[]=” / / “; //buff for storing date
unsigned char time_date[]={0x30,0x15,0x03,0x08,0x06,0x10};//(min,hr,day,date,month,yr)
unsigned char lftup,lftdown;
unsigned char engn,exgn,enfrst,exfrst;
engn =1;
exgn =1;
enfrst =1;
exfrst =1;
lftup =1;
lftdown =1;
init_rtc(&time_date);
while(1)
{
IE =0X85;
IT0 =1;
IT1 =1;
clear();
Read_RTC_Time(&time);
clear();
lcd_pnt(time);
MSdelay(1000);
Read_RTC_Date(&date);
clear();
lcd_pnt(date);
MSdelay(1000);
clear();
visitordisplay();
MSdelay(1000);
clear();
lcd_pnt(“PRESS SWITCH “);
MSdelay(1000);
clear();
engn =sw0;
exgn =sw1;
enfrst =sw2;
exfrst =sw3;
displayled(engn,exgn,enfrst,exfrst);
clear();
lcd_pnt(“USE LIFT”);
MSdelay(1000);
lftup =sw0;
lftdown =sw1;
liftcontrol(lftup,lftdown);
}
return 0;
}
6.2 MODULE FOR THE OPERATION OF RTC
/*rtc.c*/
#include<reg51.h>
#include<stdio.h>
#include <stdlib.h>
#include”rtc.h”
#include”i2c.h”
unsigned char RTC_ARR[7];
void init_rtc(unsigned char *val)
{
ReadRTC(&RTC_ARR[0]);
RTC_ARR[0] = RTC_ARR[0] & 0x7F; // enable oscillator (bit 7=0)
RTC_ARR[1] = val[0]; // minute = 59
RTC_ARR[2] = val[1]; // hour = 05 ,24-hour mode(bit 6=0)
RTC_ARR[3] = val[2]; // Day = 1 or sunday
RTC_ARR[4] = val[3]; // Date = 30
RTC_ARR[5] = val[4]; // month = August
RTC_ARR[6] = val[5]; // year = 05 or 2005
WriteRTC(&RTC_ARR[0]); // Set RTC
}
void Read_RTC_Time(unsigned char *time)
{
ReadRTC(&RTC_ARR[0]);
time[0]=bcd_acii1(RTC_ARR[2]); //geting MSB and LSB and storing it in
time[1]=bcd_acii2(RTC_ARR[2]); // date buffer
time[3]=bcd_acii1(RTC_ARR[1]);
time[4]=bcd_acii2(RTC_ARR[1]);
time[6]=bcd_acii1(RTC_ARR[0]);
time[7]=bcd_acii2(RTC_ARR[0]);
}
void Read_RTC_Date(unsigned char *date)
{
date[0]=bcd_acii1(RTC_ARR[4]); //geting MSB and LSB and storing it in
date[1]=bcd_acii2(RTC_ARR[4]); // date buffer
date[3]=bcd_acii1(RTC_ARR[5]);
date[4]=bcd_acii2(RTC_ARR[5]);
date[6]=bcd_acii1(RTC_ARR[6]);
date[7]=bcd_acii2(RTC_ARR[6]);
}
unsigned char bcd_acii1(unsigned char val)
{
unsigned char lc[]={‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9’};
unsigned char r,temp,tfr;
r= val;
temp=(r/0x10); //taking MSb
tfr=(lc[temp]);
return(tfr); //returning obtaind MSB
}
unsigned char bcd_acii2(unsigned char dat)
{
unsigned char lc[]={‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9’};
unsigned char val1,temp1,tfr1;
val1=dat; //geting the LSB
temp1=val1%0x10;
tfr1=(lc[temp1]); //returning LSB
return(tfr1);
}
/*i2c.c*/
#include<reg51.h>
#include<stdio.h>
#include”intrins.h”
#include”I2C.h”
#define ACK 1
#define NO_ACK 0
#define SLAVE 0xD0
#define WRITE 0x00
#define READ 0x01
#define ERR_ACK 0x01
unsigned char i;
sbit SCL = P3^7; // connect to SCL pin (Clock)
sbit SDA = P3^6; // connect to SDA pin (Data)
void Start(void) //start SDA and SCL
{
SDA = 1;
SCL = 1;
_nop_();_nop_();
SDA = 0;
_nop_();_nop_();
SCL = 0;
_nop_();_nop_();
}
void Stop(void) //stop bit for SDA
{
SDA = 0;
_nop_();_nop_();
SCL = 1;
_nop_();_nop_();
SDA = 1;
}
void WriteI2C(unsigned char Data) //passing write code to device
{
for (i=0;i<8;i++)
{
SDA = (Data & 0x80) ? 1:0;
SCL=1;SCL=0;
Data<<=1;
}
SCL = 1;
_nop_();_nop_();
SCL = 0;
}
unsigned char ReadI2C(bit ACK_Bit) //readiong ACk from rtc or eeprom
{
unsigned char Data=0;
SDA = 1;
for (i=0;i<8;i++)
{
SCL = 1;
Data<<= 1;
Data = (Data | SDA);
SCL = 0;
_nop_();
}
if (ACK_Bit == 1)
SDA = 0; // Send ACK
else
SDA = 1; // Send NO ACK
_nop_();_nop_();
SCL = 1;
_nop_();_nop_();
SCL = 0;
return Data;
}
void ReadRTC(unsigned char * buff) //reading data from RTC
{
Start();
WriteI2C(0xD0);
WriteI2C(0x00);
Start();
WriteI2C(0xD1);
*(buff+0)=ReadI2C(ACK); // Second and incrimenting
*(buff+1)=ReadI2C(ACK); // Minute
*(buff+2)=ReadI2C(ACK); // hour
*(buff+3)=ReadI2C(ACK); // Day
*(buff+4)=ReadI2C(ACK); // date
*(buff+5)=ReadI2C(ACK); // month
*(buff+6)=ReadI2C(NO_ACK); // year
Stop();
}
void WriteRTC(unsigned char *buff) //writing data to RTC
{
Start();
WriteI2C(0xD0);
WriteI2C(0x00);
WriteI2C(*(buff+0)); //writing sec and inc
WriteI2C(*(buff+1)); //wirting min and inc
WriteI2C(*(buff+2)); //wirting hr and inc
WriteI2C(*(buff+3)); //wirting day and inc
WriteI2C(*(buff+4)); //wirting date and inc
WriteI2C(*(buff+5)); //wirting month and inc
WriteI2C(*(buff+6)); //wirting yr
Stop();
}
6.3 MODULE FOR VISITOR COUNTER
/*visitor.c*/
#include<reg51.h>
#include “visitor.h”
#include “lcd.h”
#include “delay.h”
unsigned int m,k,l,i;
extern unsigned int count=20;
unsigned char visitor[12] ={“TOTAL AVAL “};
unsigned char number[] ={‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9’};
void visitordisplay()
{
k =count/10;
l =count%10;
clear();
for(i=0;i<12;i++)
{
lcd_pntc(visitor);
MSdelay(250);
}
lcd_pntc(number[k]);
MSdelay(250);
lcd_pntc(number[l]);
MSdelay(500);
return;
}
void enter (void) interrupt 0
{
EA =0;
count–;
if(count<0)
{
k =count/10;
l =count%10;
clear();
for(i=0;i<12;i++)
{
lcd_pntc(visitor);
MSdelay(250);
}
lcd_pntc(number[k]);
MSdelay(250);
lcd_pntc(number[l]);
MSdelay(500);
MSdelay(250);
}
EA=1;
}
void exit (void) interrupt 2
{
EA =0;
count++;
if(count>20)
{
k =count/10;
l =count%10;
clear();
for(i=0;i<12;i++)
{
lcd_pntc(visitor);
MSdelay(250);
}
lcd_pntc(number[k]);
MSdelay(250);
lcd_pntc(number[l]);
MSdelay(500);
MSdelay(250);
}
EA =1;
}
6.4 MODULE FOR LCD DISPLAY
/*lcd.c*/
#include<reg51.h>
#include<intrins.h>
#include”lcd.h”
sfr ldata=0x90; //difineng port1 for data
sbit rs=P2^0; //seting rs at p2.0
sbit rw=P2^1; //seting rw at p2.1
sbit en=P2^2; //seting en at p2.2
extern int fst;
extern int gn;
extern unsigned int m;
void MSdelay(unsigned int item);
void lcdcmmd(unsigned char mybyte)
{
ldata=mybyte;
rs=0;
rw=0;
en=1;
MSdelay(1);
en=0;
return;
}
void lcd_pnt(unsigned char *Ldat)
{
unsigned char *tmp;
tmp=Ldat;
while(*tmp!=’ ’)
{
ldata=*tmp;
rs=1;
rw=0;
en=1;
MSdelay(1);
en=0;
tmp++;
}
return;
}
void clear(void)
{
lcdcmmd(0x38); //2 line 5×7 matrix
MSdelay(5);
lcdcmmd(0x80); //force cursor to begin from 2nd line
MSdelay(5);
lcdcmmd(0x0e); //display on,cursor blinking
MSdelay(5);
lcdcmmd(0x01); //clear display screen
MSdelay(5);
lcdcmmd(0x06); //inc cursor to right
MSdelay(5);
return;
}
void lcd_pntc(unsigned char Ldat1)
{
ldata=Ldat1;
rs=1;
rw=0;
en=1;
MSdelay(1);
en=0;
return;
}
void liftdisplay()
{
unsigned char num[] ={‘0′,’1’};
unsigned char line[14] ={“LIFT ON FLOOR “};
int i;
for(i=0;i<14;i++)
{
lcd_pntc(line);
MSdelay(250);
}
lcd_pntc(num[m]);
MSdelay(500);
return;
}
void grndlcd()
{
unsigned char num[] ={‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9’};
unsigned char gndline[12] ={“GND AVAL “};
int i;
int m,n;
m =gn/10;
n =gn%10;
for(i=0;i<12;i++)
{
lcd_pntc(gndline);
MSdelay(250);
}
lcd_pntc(num[m]);
MSdelay(250);
lcd_pntc(num[n]);
MSdelay(500);
return;
}
void frstlcd()
{
unsigned char frstline[12] ={“FIRST AVAL “};
unsigned char num1[] ={‘0′,’1′,’2′,’3′,’4′,’5′,’6′,’7′,’8′,’9’};
int j;
int m,n;
m =fst/10;
n =fst%10;
for(j=0;j<12;j++)
{
lcd_pntc(frstline[j]);
MSdelay(250);
}
lcd_pntc(num1[m]);
MSdelay(250);
lcd_pntc(num1[n]);
MSdelay(500);
return;
}
6.5 MODULE FOR SWITCH
/*display.c*/
#include <reg51.h>
#include”display.h”
#include”lcd.h”
#include”delay.h”
extern int fst=10;
extern int gn =10;
void displayled(unsigned char engn,unsigned char exgn,unsigned char enfrst,unsigned char exfrst)
{
if(((engn==1) && (exgn==1)) && ((enfrst==1) && (exfrst==1)))
{
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
else
{
if(((engn==0) && (exgn==1)) && ((enfrst==1) && (exfrst==1)))
{
gn–;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==1) && (exgn==0)) && ((enfrst==1) && (exfrst==1)))
{
gn++;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==0) && (exgn==0)) &&((enfrst==1) && (exfrst==1)))
{
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==1) && (exgn==1)) && ((enfrst==0) && (exfrst==1)))
{
fst–;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==0) && (exgn==1)) && ((enfrst==0) && (exfrst==1 )))
{
gn–;
fst–;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==1) && (exgn==0)) && ((enfrst==0) && (exfrst==1))
{
gn++;
fst–;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==0) && (exgn==0)) && ((enfrst==0) && (exfrst==1))
{
fst–;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==1) && (exgn==1)) && ((enfrst==1) && (exfrst==0)))
{
fst++;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
else
{
if(((engn==0) && (exgn==1)) && ((enfrst==1) && (exfrst==0))
{
gn–;
fst++;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==1) && (exgn==0)) &&((enfrst==1) && (exfrst==0)))
{
gn++;
fst++;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==0) && (exgn==0)) &&((enfrst==1) && (exfrst==0)
{
fst++;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
else
{
if(((engn==1) && (exgn==1)) &&((enfrst==0) && (exfrst==0)))
{
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==0) && (exgn==1)) &&((enfrst==0) && (exfrst==0)))
{
gn–;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
if(((engn==1) && (exgn==0)) &&((enfrst==0) && (exfrst==0)
{
gn++;
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}
Else
{
grndlcd();
MSdelay(250);
clear();
frstlcd();
MSdelay(500);
}}}}}}
}}}}}
}}}}
return;
}
6.6 MODULE FOR THE OPERATION OF MOTOR
/*liftcontrol.c*/
#include <reg51.h>
#include “lcd.h”
#include”delay.h”
#include”liftapp.h”
#include”liftcontrol.h”
extern unsigned char c=1;
unsigned char k;
extern unsigned int m=0;
void liftcontrol(unsigned char lftup,unsigned char lftdown)
{
if((lftup==1) && (lftdown==1))
{
clear();
liftdisplay();
MSdelay(1000);
}
else
{
if((lftup==0) && (lftdown==1))
{
k=steppercond(c);
if(k==0)
{
clear();
liftdisplay();
MSdelay(1000);
motoranti();
MSdelay(1000);
motorstop();
m++;
clear();
liftdisplay();
MSdelay(1000);
c++;
}
Else
{
clear();
liftdisplay();
MSdelay(1000);
motorclk();
MSdelay(1000);
motorstop();
c++;
clear();
m–;
liftdisplay();
MSdelay(1000);
motoranti();
MSdelay(1000);
motorstop();
clear();
m++;
liftdisplay();
MSdelay(1000);
c++;
}
}
Else
{
k=steppercond(c);
if(k==1)
{
clear();
liftdisplay();
MSdelay(1000);
motorclk();
MSdelay(1000);
motorstop();
clear();
m–;
liftdisplay();
MSdelay(1000);
c++;
}
else
{
clear();
liftdisplay();
MSdelay(1000);
motoranti();
MSdelay(1000);
motorstop();
c++;
clear();
m++;
liftdisplay();
MSdelay(1000);
motorclk();
MSdelay(1000);
motorstop();
clear();
m–;
liftdisplay();
MSdelay(1000);
c++;
}
}
return;
}
/*liftapp.c*/
#include <reg51.h>
#include”liftapp.h”
#include”liftcontrol.h”
#include”delay.h”
sbit in1 =P3^1;
sbit in2 =P3^4;
sbit en1 =P3^0;
void motorstop()
{
in1 =0;
in2 =0;
en1 =0;
return;
}
void motorclk()
{
in1 =1;
in2 =0;
en1 =1;
return;
}
void motoranti()
{
in1 =0;
in2 =1;
en1 =1;
return;
}
unsigned char steppercond(unsigned char c)
{
if(c%2==0)
return(1);
else
return(0);
}
}
6.7 MODULE FOR DELAY
/*delay.c*/
#include<reg51.h>
void MSdelay(unsigned int item)
{
unsigned int i,j;
for(i=0;i<item;i++)
for(j=0;j<275;j++);