Hey!

I have written some test codes for the Transmitter and Receiver sides.

I have studied the datasheet thoroughly, still am not so clear.

Plz guide me, I am really worried.

Here are both codes.

1) Transmitter Code:

#include <AT892051.H>
#include <intrins.h>

sbit RXD1 = P3^0;
sbit TXD1 = P3^1;
sbit M0 = P3^2;
sbit M1 = P3^3;
sbit CLK = P3^4;
sbit RDYN = P3^7;

void send (void);
unsigned char bdata value = 0;
bit flag;

sbit value_0 = value^0;
sbit value_1 = value^1;
sbit value_2 = value^2;
sbit value_3 = value^3;
sbit value_4 = value^4;
sbit value_5 = value^5;
sbit value_6 = value^6;
sbit value_7 = value^7;

void main()
{
M1 = 0; //for Tx mode
M0 = 1;
P1 = 0xFF;
flag = 1;
_nop_();
_nop_();

while(flag)
{


if(P1_0 == 0) // Push Button 1
{
value=0xEE;
}

else if(P1_1 == 0) // Push Button 2
{
value=0xDD;
}

else if(P1_2 == 0) // Push Button 3
{
value=0xBB;
}

else if(P1_3 == 0) // Push Button 4
{
value=0x77;
}

else
{
value=0xFF;
}

send();


}
}




void send (void)
{ //send routine start


CLK = 0;
_nop_();
_nop_();
while(RDYN); // Check for RDYN transition
_nop_();
TXD1 = value_0;
CLK = 1;
_nop_();
_nop_();
_nop_();
CLK = 0;



_nop_();
_nop_();
while(RDYN); // Check for RDYN transition
_nop_();
TXD1 = value_1;
CLK = 1;
_nop_();
_nop_();
_nop_();
CLK = 0;




_nop_();
_nop_();
while(RDYN); // Check for RDYN transition
_nop_();
TXD1 = value_2;
CLK = 1;
_nop_();
_nop_();
_nop_();
CLK = 0;


_nop_();
_nop_();
while(RDYN); // Check for RDYN transition
_nop_();
TXD1 = value_3;
CLK = 1;
_nop_();
_nop_();
_nop_();
CLK = 0;


P1 = 0xFF;



} //send routine end




2) Now Receiver's Code:


#include <AT892051.h>
#include <intrins.h>



sbit RXD1 = P3^0;
sbit TXD1 = P3^1;
sbit M0 = P3^2;
sbit M1 = P3^3;
sbit CLK = P3^4;
sbit RDYN = P3^7;

void delay(int m);
void receive(void);

bit flag;

void main()
{

M1 = 1; // for Rx mode
M0 = 0;
P1 = 0xFF;
flag = 1;


while(flag)
{
while(RDYN);
receive();

}
}




void delay(int m)
{
int c,d;
for(d=0;d<m;d++)
{
for(c = 0;c < 150;c++)
_nop_();
}
}







void receive(void)
{

CLK = 0;
_nop_();
_nop_();

P1_0 = RXD1;
_nop_();
_nop_();
CLK = 1;
delay(1);

CLK = 0;
_nop_();
_nop_();
P1_1 = RXD1;
_nop_();
_nop_();
CLK = 1;
delay(1);

CLK = 0;
_nop_();
_nop_();
P1_2 = RXD1;
_nop_();
_nop_();
CLK = 1;
delay(1);

CLK = 0;
_nop_();
_nop_();
P1_3 = RXD1;
_nop_();
_nop_();
CLK = 1;
delay(1);

}