lpl setting using interface problems about tinyos-main HOT 2 CLOSED

I believe this is not so much a bug, but the way LPL interface commands are 
called in the user app.

- Problem description -

The interface command in question is 
LowPowerListening.setRemoteWakeupInterval(...).

Before the user app passes a message to AMSenderC, it calls 
LowPowerListening.setRemoteWakeupInterval(...) on that outgoing message. 
However, after LplAMSenderP gets that message, it also calls 
LowPowerListening.setRemoteWakeupInterval(...) and "resets" the message's 
remote wakeup interval to a default value. Therefore, when the radio stack 
finally holds the message, the remote wakeup interval is always the default 
value (which is 0 as set by Lpl.h).

Defining LPL_DEF_REMOTE_WAKEUP in the Makefile hides the problem. This is 
because it basically changes the default remote wakeup interval value.

- Proposed solution -

The user application should use the SendNotifier interface. Then, when the 
SendNotifier.aboutToSend(...) event is signaled, the user app can then call 
LowPowerListening.setRemoteWakeupInterval(...).

- Status -

I contacted the user, and the proposed solution works for him.