[ns] Timer on Mac class

[Jose Aguiar Silva]

Hi all,
  I am trying to implement in ns2 a period timer in Mac class level.
However, it is generating a infinite loop.
  Please, see my implementation:

//.h
class MyTimer : public Mac802_15_4Timer {
public:
  MyTimer(MacClass *a) : Mac802_15_4Timer() {a_=a;}
  virtual void    handle(Event *e);
protected:
  MacClass *a_;
};

//.cc
void MyTimer::handle(Event *e)
{
   a_->Test();
}

void MacClass::Test()
{o
   myTimer->start(0.5); // periodic timer 0.5 seconds
}

How can I use the stop method of Timer function to implement periodic event
in MAC layer? I did the same procedure on Routing layer and it is possible!
What is wrong?
Thanks in advance.
Jose Aguiar