Exception on adding Interrupt eventhandler

NETMF & Gadgeteer
1

Hi,

I’m using an Embedded Masters Developmentboard with lastest firmware for EMX(MF4) and VS 2010.


 Cpu.Pin _pinChangerRequest = EMX.Pin.IO28;
 InterruptPort _ChangerRequest; 
  ...
 _ChangerRequest = new InterruptPort(_pinChangerRequest, false, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeLow);
 _ChangerRequest.OnInterrupt += new NativeEventHandler(_ChangerRequest_OnInterrupt);

on adding the eventhandler i get a System.ArgumentException.

Message = "Exception was thrown: System.ArgumentException"
StackTrace = "Microsoft.SPOT.Hardware.InterruptPort::EnableInterrupt\r\nMicrosoft.SPOT.Hardware.NativeEventDispatcher::add_OnInterrupt\r\nGHIGraphicalDemo.Changer.Kenwood::.ctor\r\nGHIGraphicalDemo.Presentation.ChangerWindow::.ctor\r\nGHIGraphicalDemo.Presentation.Deskt…

what could this be ?

2

IO28 doesn’t support interrupts.

3

You can check which pins can be used as interrupt inputs here:

http://www.tinyclr.com/downloads/Cobra/Broch_FEZ_Cobra.pdf