[Tinyos-help] How to enableACK on tmote

[Lee Ee Foong]

I'm trying to test the ack in the sendDone( ) but the ack field always set to zero. I call MacControl.enableACK( ) in the StdControl.start( ).  Is there something that I did wrong or missing?
   
  I wired the components as following:
   
   Main.StdControl -> CC2420RadioC;
   MultiHopEngineM.MacControl -> CC2420RadioC;

   command result_t StdControl.start()
  {
     call MacControl.enableAck();
     return SUCCESS;
  }
   
   
   event result_t SendMsg.sendDone[uint8_t id](TOS_MsgPtr pMsg, result_t success)
   {
    dbg(DBG_TEMP, "ack is %d \n", pMsg->ack);
 
    if (pMsg->ack == 1)
      call Leds.redToggle();
    else
      call Leds.greenToggle();
   
    return SUCCESS;
  }
   
   
   
   Thank you.
   
  Andre

 
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