[Tinyos-help] serial communication

[mai naaom]

hi
i  wrote a code to receive packets from the serial port and set the received
data on the leds i used the hyper terminal to send the data  on it ,this
code doesnt work
this the code
WHAT is wrong?

#include "SerialB.h"

module SerialBC {
  uses interface Boot;
  uses interface Leds;
  uses interface Packet;
  uses  interface AMPacket;
  uses interface Receive;
  uses interface SplitControl as serialcontrol;
  }
implementation {


  message_t pkt;
  bool busy = FALSE;
  uint16_t data;



  event void Boot.booted() {
    call serialcontrol.start();
  }

  event void serialcontrol.startDone(error_t err) {
    if (err == SUCCESS) {
          }
    else {
      call serialcontrol.start();
    }
  }

  event void serialcontrol.stopDone(error_t err) {
  }





  event message_t* Receive.receive(message_t* msg, void* payload, uint8_t
len){
    if (len == sizeof(serialmsg)) {
      serialmsg* btrpkt = (serialmsg*)payload;
     call Leds.set(btrpkt->data);
    }

    return msg;
  }
}
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