Does this type of data (USBlyzer Report) help to write drivers? http://vetshelpcenter.com/media/GR-55-USB-Anlyzer.html
-----Original Message----- From: Daniel Mack zonque@gmail.com To: Jeffrey Scott Flesher Gmail jeffrey.scott.flesher@gmail.com Cc: alsa-devel@alsa-project.org Subject: Re: [alsa-devel] GR-55 Driver Date: Tue, 17 May 2011 12:11:14 +0200
On Mon, May 16, 2011 at 11:33 PM, Jeffrey Scott Flesher Gmail jeffrey.scott.flesher@gmail.com wrote:
# alsamixer -D hw:GR55 This sound device does not have any controls.
# amixer -D hw:GR55 controls [Nothing]
That's possible.
# cat /proc/asound/GR55/stream0 Roland GR-55 at usb-0000:00:12.2-4, high speed : USB Audio
Playback: Status: Stop Interface 0 Altset 1 Format: S32_LE Channels: 2 Endpoint: 5 OUT (ASYNC) Rates: 44100 Data packet interval: 125 us
Capture: Status: Stop Interface 1 Altset 1 Format: S32_LE Channels: 2 Endpoint: 4 IN (ASYNC) Rates: 44100 Data packet interval: 125 us
# cat /proc/asound/GR55/midi0 GR-55
Looks ok.
# aplay -D plughw:GR55,0,0 /usr/share/sounds/alsa/Front_Center.wav Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono [No sound]
Can you try this with a 44100/16bit file?
I am facing two problems, I am unfamiliar with this piece of equipment and as a result, I'm unsure how to test it.
Testing Audio function: I tested it with Audacity in Windozes and it works; in Linux I set it up the same way: GR-55 USB Audio (hw:1,0) as recording device; no sound.
Are you sure hw:1,0 refers to your GR-55? Check the entries in /proc/asound/cards again, please.
Using Logitech Webcam software I can record the guitar output; Using Cheese, I do not get Audio.
So you DO in fact get audio from the device then with some tool?
Testing MIDI function: I'm going to call tech support on this one; I have not found a Windows app that seems to work with the MIDI;
For Windows, Midi-OX is a good tool to test with: http://www.midiox.com/
so I can not expect to test this in Linux yet; I would like to be able to convert notes into sheet music; I tried TuxGuitar, but must admit I don't know how to get it to work with MIDI input, or if it even does.
For Linux, use amidi. "amidi -l" will list all available MIDI ports. For example to dump all incoming messages, use "amidi --port hw:X,0 --dump". And to send messages, use "--send-hex" and make sure you send valid MIDI messages, otherwise the other side won't do anything.
I'm going to keep on this till I get it 100%; I have patience; lets hope you do too.
Well, I believe the quirks patch is correct, and there's only software configuration issues left.
Daniel