Interpret Bytes received from USB device in .NET

Question

I'm successfully receiving bytes from an USB device using a HID USB .net library. Here is a sample of my code :

        Dim ptr As IntPtr = USB.USB_Read()
        Dim buff As Byte() = New Byte(USB.USB_ReadLength() - 1) {}

        Marshal.Copy(ptr, buff, 0, buff.Length)
        textBox_Read.Text = BitConverter.ToString(buff)

And here is a sample of received data :

00-01-00-F0-00-00-00-80
00-00-00-F0-00-00-00-80

Or with another USB controller :

00-6D-6A-A8-72-B2-70-7B-7E-00-80-01-00-00-00
00-6D-6A-A8-72-B2-70-7B-7E-00-80-01-00-00-00
00-6D-6A-A8-72-B2-70-7B-7E-00-80-00-00-00-00
00-6D-6A-A8-72-B2-70-7B-7E-00-80-00-00-00-00

My question is : how can I know wich button is pressed ? Meaning : I just want my program to store the button pressed and do an action when pressed.

How can I interpret this data ?

Regards, Alexis.

Do you mean "another USB controller" as in another mainboard/computer, or "another USB device"? — Vladislav Zorov, Nov 01 '11 at 11:07
Hum I mean : another USB Joystick attached to the same computer ;) — alex, Nov 01 '11 at 11:11
Ok, posting as an answer, so you can click "accept" :) Didn't expect this would solve your issue :D — Vladislav Zorov, Nov 01 '11 at 12:07

score 0 · Answer 1 · answered Feb 16 '21 at 09:50

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This app talks to the PS5 Dual Sense controller using Device.Net

answered Feb 16 '21 at 09:50

Christian Findlay

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score 0 · Accepted Answer · edited May 23 '17 at 11:47

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The information on how to interpret these is possibly proprietary.

If you target just this one device, you could just try different buttons and look for patterns in the bytes.

Your other option is to leave the interpretation of bytes and USB ports to the drivers and get your data from Windows and DirectX - e.g. Taking input from a joystick with C# .NET

edited May 23 '17 at 11:47

Community

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answered Nov 01 '11 at 12:06

Vladislav Zorov

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Interpret Bytes received from USB device in .NET

2 Answers2