hello,
i m trying to establish wireless communication b/w PC and 8051. i m using p89v51rd2 mc & Tarang F4 transceiver module (for wireless transmission of data).
i tested tarang wireless module by sending data from one PC to another, it worked fine. i have also established wired communication b/w PC and 8051 successfully (both way, i.e., frm pc to 8051 and also frm 8051 to pc).

now, when i introduce wireless module in between, if 8051 sends data to PC i get it exactly as i were getting it with wired communication, but when i send data from PC side something goes wrong, 8051 dos not rcv data send by Computer. i m controlling and LED based on the data rcvd by 8051. but LED does not glow.

i don't know whats going wrong. if 8051 can send data to PC, then PC should also be able to send data to 8051, but its not.

please help.

here is a simple code i have written to send data frm PC to 8051.

org 0h

;configuring serial communication-----start-----
mov tmod,#20h     ;t1mer1 mode2.
mov th1,#0fdh     ;baud rate=9600bps.
mov scon,#50h     ;mode1, 8-bit data,1-start & 1-stop bit,REN(reception) enabled.
setb tr1
again:clr ri
here:jnb ri,here  ;wait till the command is received.
mov a,sbuf        ;copy the command.
;configuring serial communication-----end-----

cjne a,#'y',next
mov p0,#0aah      ;toggle LEDs connected @ port0

next:cjne a,#'n',next1
mov p0,#55h       ;toggle LEDs connected @ port0

next1:sjmp again
end