[Gta04-owner] switching usb modes

[Kevin Hremeviuc]

Hi all,

Using a 3.2.21 kernel that I got the sourcecode for from Radek's linux
kernel repository I don't seem to have USB connectivity. I am using the
same cables that I used to use with the gta02 but nothing seems to
happen. Has anyone else tried USB? If so, which kernel (repository and
version are you using) and exactly what have you tried?

Thanks

Kev

On Wed, 2012-07-25 at 22:57 -0700, Kevin Hremeviuc wrote:
> Hi all,
> 
> 
> Thanks Neil. I thought that the switching was manual as per the gta02.
> Also the gta02 had a powered host mode. Is there is an equivalent on
> the gta04?
> 
> 
> 
> ______________________________________________________________________
> From: NeilBrown <neilb at suse.de>
> To: Kevin Hremeviuc <khremeviuc at yahoo.com>; List for communicating
> with real GTA04 owners <gta04-owner at goldelico.com> 
> Sent: Thursday, July 26, 2012 1:42 PM
> Subject: Re: [Gta04-owner] switching usb modes
> 
> 
> On Wed, 25 Jul 2012 20:51:49 -0700 (PDT) Kevin Hremeviuc
> <khremeviuc at yahoo.com> wrote:
> 
> > Hi all,
> > 
> > Is there a mechanism for switching USB modes? I am gearing up to
> play around with alsa sequencing using a couple of USB Midi devices,
> Seq24 (modified) and Fluidsynth (or possibly Specimen if there is
> enough CPU).
> > 
> 
> What do you mean by "switching USB modes"?  Do you mean switching
> between
> 'host' and 'gadget' mode?
> 
> If you do, then you need a USB-OTG cable.  It is a cable with a
> mini-usb B
> plug on one end with the 'id' pin shorted to ground, and a regular USB
> A
> socket on the other end.
> When you plug this in, the kernel notices the ID pin is grounds and
> switches
> to host mode.
> 
> Something like this 
> 
> http://www.ebay.com/itm/USB-2-0-A-Female-to-5-pin-B-Male-Mini-USB-Cable-OTG-Host-Extension-Cable-PO113-S-/390425562560?pt=US_Video_Cables_Adapters&hash=item5ae72d4dc0
> 
> NeilBrown
> 
> 
> 
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