Heroduino

Hello Julien,

look this http://forums.netdui...h-class/However

You can call the ticks from netduino and calculate to microsecounds.

sincerely

Heroduino

Hello Grant,

sorry. I had no try this. The other way is, before you return from Read() is clear the eventhandler

public static int Read(){   EchoPin.OnInterrupt += new NativeEventHandler(port_OnInterrupt);      EchoPin.DisableInterrupt();                         Distance();   Thread.Sleep(25);   EchoPin.OnInterrupt -= new NativeEventHandler(port_OnInterrupt);   return uDistance;}

Or you write a methode for allocate one time only the event handler.

Other Example

public static void SetEventInterupt(){      EchoPin.OnInterrupt += new NativeEventHandler(port_OnInterrupt);}public static int Read(){  EchoPin.DisableInterrupt();                         Distance();  Thread.Sleep(25);  return uDistance; }

And your main 'while' you write:

SetEventInterupt();while (true) {       lcd.Move(2, 0);       lcd.Show(Sonic.Read().ToString() + "cm ");       Thread.Sleep(1000); }

Or look on my blog and Translate my content. Well, I posted a example code.

http://meineweltinme...m-netduino.html

Heroduino

Hello Grant,

if you used the Read() method, you allocate each time a new Event, but it dont clear it. Try this to the Methode.

public static int Read(){   if(EchoPin.OnInterrupt == null)   {      EchoPin.OnInterrupt += new NativeEventHandler(port_OnInterrupt);   }   EchoPin.DisableInterrupt();                         Distance();   //Debug.Print("distance = " + myDistance + " mm.");   Thread.Sleep(25);   return uDistance;}

Heroduino

Herllo Attila,

sorry, but I have not understand the DMP completely. The Sensor have many options to configurate and I have here presented a tiny example code for the sensor.

If you want use the raw data from the sensor, deaktivate some setting in the initialisation. To Comment out the Gyro_Config (0x1B) and the Accel_Config (0x1C).

On the page 5 is a description what the DMP going to do.

http://www.invensens...M-MPU-6000A.pdf

Heroduino

Hello MoonWalker (Attila),

the elapsed time it is not necessary for filtering. For example you can progamming a attitude indicator with complemtary filtering without elapsed time.

What are you planing to do with this elapsed time?

Heroduino