Intelligent Train Engine Side Controller Program

1. #include <reg51.h>
#include"lcddisplay.h"
sbitstatusred = P3^0;
sbitstatusgreen = P3^1;
sbitlight = P3^2;
sbitlightsw = P3^6;
sbitstart_sw = P3^3;
sbitback = P3^4;
sbithorn = P3^5;
sbitalert = P3^7;

2. sbitbuz = P2^7;
/** l293d connectionc***/
/** l293d connectionc***/
sbitin1 = P2^2;
sbitin2 = P2^3;
sbitin3 = P2^4;
sbitin4 = P2^5;
sbiten1 = P2^0;
sbiten2 = P2^1;

3. unsignedchari,lightstatus=0;
voidmain()
{
unsignedintTIME,x,yy;
lcd_init();
lcd_init();
in1=0;
in2=0;
lcdcmd(0x84);
msgdisplay("WELCOME");

4. delay(2000);
statusred=1;
statusgreen=0;
delay(1000);
start:
lcdcmd(0x01);
msgdisplay("INTILLEGENT");
lcdcmd(0xC0);
msgdisplay("TRAIN ENGINE");
while(start_sw==1); //waittill trainstarted
en1=1;

5. en2=1;
in1=1;
in2=0;
in3=1;
in4=0;
lcd_init();
lcd_init();
xy:
lcdcmd(0x01);
msgdisplay("TRAIN STARTED");
lcdcmd(0xc0);
msgdisplay("CHECKNGRESPONSE");

6. for(TIME=0;TIME<3000;TIME++)
{
xx:
if(start_sw==0)
{
statusred=1;
statusgreen=0;
en1=en2=0;
in1=0;
in3=0;
in2=0;
in4=0;

7. lcdcmd(0x01);
msgdisplay("TRAIN STOPPED");
delay(100);
while(start_sw==0);
goto start;
}
if(horn==0)
{
buz=0;
lcdcmd(0x01);
msgdisplay("HORN OPERATED");
delay(1000);
while(horn==0);
buz=1;
TIME=0;

8. }
if(lightsw==0)
{
lightstatus=~lightstatus;
lcdcmd(0x01);
if(lightstatus)
{
light=0;
msgdisplay("LIGHTISON!!");
}
else
{
msgdisplay("LIGHTISOFF!!");

9. light=1;
}
delay(1000);
while(lightsw==0);
TIME=0;
}
if(back==0)
{
en1=en2=0;
in1=0;
in3=0;
in2=1;
in4=1;
delay(50);
en1=en2=1;

10. lcd_init();
lcdcmd(0x01);
msgdisplay(" TRAIN IS ");
lcdcmd(0xC0);
msgdisplay("MOVINGBACK...");
delay(1000);
while(back==0);
TIME=0;
}
delay(5);
}
TIME=0;

11. lcdcmd(0x01);
msgdisplay("ALERTTIME...");
buz=0;
for(x=0;x<800;x++)
{
lcdcmd(0xc0);
convert(x);
delay(1);
if(alert==0)
{
for(yy=0;yy<600;yy++)
{
if(alert==1)
goto xx;

12. }
buz=1;
TIME=0;
goto xy;
}
/*proceed:
if((signalred==0)&&(signalgreen==1))
goto xx;**/
}
en1=0;
en2=0;
in1=in3=0;
in2=0;

13. in4=0;
lcdcmd(0x01);
msgdisplay("TRAIN STOPPED..");
statusred=0;
statusgreen=1;
buz=0;
while(1);
}