profile.cpp

// Template class for debugging timing with a logic probe.  When this object gets created
// it will raise its pin high.  When it gets destroyed, it will drop the pin back low.  You
// can (ab)use C++'s object life time to use this to time how long a block of code takes.  
// see example below
template <int PIN> TB : public FastPin<PIN> { 
public:
  TB() { static bool bSet=false; if(!bSet) { setOutput(); bSet=true; } hi(); }
  ~TB() { lo(); }
};

... 

// In the code before - every time the loop function is entered, pin10 will be raised high
// and every time the loop is exited, pin10 will be dropped back low.  Meanwhile, the block
// further in will raise pin 11 high just before calling show, and it will drop low again
// afterwards.  You can then use a logic probe on pins 10 and 11 to see exactly how long 
// each thing takes while going through a loop.
void loop() { 
  TB<10> loop_pin();
  for(int i = 0; i < NUM_LEDS; i++) {
    leds[i] = CRGB::Black;
  }

  {
  TB<11> show_pin();
  LEDS.show();
  }

}