smarthome.c

#include<reg51.h>
sbit load1=P1^0;
sbit load2=P1^1;
sbit load3=P1^2;
sbit load4=P1^3;

void main()

{
unsigned char x;	

SCON=0x50;
TMOD=0x20;
TH1=-3;
TR1=1;
	
while(1)
{
while(RI==0);
SBUF=x;
x=SBUF;
while(TI==1)
	
TI=0;
RI=0;
if(x=='1')
{
load1=1;
}
if(x=='2')
{
load1=0;
}
if(x=='3')
{
load2=1;
}
if(x=='4')
{
load2=0;
}
if(x=='5')
{
load3=1;
}
if(x=='6')
{
load3=0;
}
if(x=='7')
{
load4=1;
}
if(x=='8')
{
load4=0;
}
if(x=='0')
{
load1=load2=load3=load4=0;
}
if (x=='9')
{
load1=load2=load3=load4=1;
}
}
}