Enumerate Composite WinUSB Device for MFDeploy

Question

I'm attempting to customize MFDeploy (for the .NET Microframeworks) to find the NETMF Debug interface on my NETMF hardware. Currently when I use the code in MFDeployEngines WinUSB driver:

IntPtr

devInfo = Native.SetupDiGetClassDevs(refguid, null, 0, Native.DIGCF_DEVICEINTERFACE | Native.DIGCF_PRESENT);

Native

.SP_DEVICE_INTERFACE_DETAIL_DATAdetail = newNative.SP_DEVICE_INTERFACE_DETAIL_DATA();

Native.SP_DEVICE_INTERFACE_DATAinterfaceData = newNative.SP_DEVICE_INTERFACE_DATA(); interfaceData.cbSize = Marshal.SizeOf(interfaceData);

           

Native.SetupDiGetDeviceInterfaceDetail(devInfo, refinterfaceData, refdetail, Marshal.SizeOf(detail) * 2, 0, 0))

The interface/device instance path I get from:

detail.DevicePath

Seems to be indeterminate, and I only get one per device.  I will always know the InterfaceGUID and MFDeploy will always be in the first interface.

Any help on how I can find the correct Device Instance Path?

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Kevin WOlf

Answer 1

How many are you expecting? What is the string you are getting back?

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Answer 2

Currently my device has of three interfaces, calling the above code will only return one interface/device path on my composite device.

 

Above is how my device looks in the registry.

When I execute the code as outlined in my original question it returns the following path, but does not always return the same path/interface:

Port: \\?\usb#vid_1483&pid_1012&mi_02#8&3f086a4&0&0002#{c30242c7-fb25-443b-9e7e-a4260f373982}

As mentioned, I want to some how identify the first interface (or at least the one with the Device Interface GUID I expect "a5bcdf10-6530-11d2-901F-00C04fb951ed"

Port: \\?\usb#vid_1483&pid_1012&MI_00#8&3F086A4&0&0000#{a5bcdf10-6530-11d2-901f-00C04fb951ed}

Kevin...

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Kevin Wolf