[wdmaudiodev] Re: USB MIDI using PIC18F4550 - NO MIDI PORTS!
- From: DJ Sisolak <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Wed, 19 Sep 2007 10:16:04 -0700
Hi all,
The version of the specification in the Header descriptor is incorrect:
-------------------------
Offset into Configuration Descriptor: 18 = 0x12
-------------------------
HEADER UNIT:
BYTE Length: 0x09
BYTE DescriptorType: 0x24
BYTE DescriptorSubtype: 0x01
SHORT bcdAudioSpec: 0x0001 <== This should be 0x100
SHORT TotalLength: 0x0009
BYTE InCollection: 0x01 (# Streaming I/F's)
BYTE baInterfaceNr[0]: 0x01
Cheers,
DJ
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of ken bennson
Sent: Wednesday, September 19, 2007 7:00 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: USB MIDI using PIC18F4550 - NO MIDI PORTS!
Hello Again,
It is the descriptors from the example in USB Midi spec.
Hmm, do you need an element descriptor in the Audio Control?
Isnt it enough just to implent an Audio Interface and a class specefic Audio
Control interface?
On 9/18/07, Tim Roberts <timr@xxxxxxxxx<mailto:timr@xxxxxxxxx>> wrote:
ken bennson wrote:
>
> Here are my descriptors:
>
> 0x12,
> 0x01,0x01,0x10,0x00,0x00,0x00,0x08,0x12,0x34,0x12,0x34,0x12,0x34,0x1,0x1,0x1,0x1,
> 0x09,0x02,0x65,0x00,0x02,0x01,0x00,0x80,0x32,
> 0x09,0x04,0x00,0x00,0x00,0x01,0x01,0x00,0x00,
> 0x09,0x24,0x01,0x01,0x00,0x09,0x00,0x01,0x01,
> 0x09,0x04,0x01,0x00,0x02,0x01,0x03,0x00,0x00,
> 0x07,0x24,0x01,0x01,0x00,0x41,0x00,
> 0x06,0x24,0x02,0x01,0x01,0x00,
> 0x06,0x24,0x02,0x02,0x02,0x00,
> 0x09,0x24,0x03,0x01,0x03,0x01,0x02,0x01,0x00,
> 0x09,0x24,0x03,0x02,0x04,0x01,0x01,0x01,0x00,
> 0x09,0x05,0x01,0x02,0x40,0x00,0x00,0x00,0x00,
> 0x05,0x25,0x01,0x01,0x01,
> 0x09,0x05 0x81,0x02,0x40,0x00,0x00,0x00,0x00,
> 0x05,0x25,0x01,0x01,0x03
>
> Tell me if you want it in a more user friendly form!
Well, you did make this as hard as possible for us...
You don't have any element descriptors in your audio control interface.
My interpretation of Mike's message was that you must have at least
input and output terminals in order to satisfy Vista.
--
Tim Roberts, timr@xxxxxxxxx<mailto:timr@xxxxxxxxx>
Providenza & Boekelheide, Inc.
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