On Tue, Feb 23, 2010 at 9:11 PM, Alan Gerber <akgerber@...> wrote:
> Hello web-list,
> I have a Verdex board and an AudioStix II. I am seeking to attach a USB
> camera to it. I have searched the mailing list archive for relevant
> information without much success. From reading
> <http://docwiki.gumstix.org/index.php/USB_host>, it appears the Verdex
> board has USB host ability. However, it also appears that one needs a
> consoleVX board to use a USB host port; the AudioStix's USB port is only a
> client port.
> Is this accurate? Is there any way to have a USB host without a consoleVX
Well, I took a look at the schematics for the console-vx and compared
how the USB connector is hooked up on the audiostix-II.
On the console-vx, the ID pin on the USB connector goes to
GPIO41_OTG_ID on the 60-pin connector.
On the audiostix-II, the USB ID pin is unconnected, and the same pin
location as GPIO41_OTG_ID is connected to BTCTS.
My understanding is that the ID pin is grounded for a USB host, so if
you connect the BTCTS pin to ground, that may fool the verdex
(although I'm not sure that this is needed). I seem to recall just
using a regular mini-B to A cable and A-female to A-female gender
bender when using the console-vx board, and the mini-B end has the ID
The audiostix-II also connects D+ through a pullup resistor to Y0_RTS,
which is mapped to GPIO27_FF_RTS. So you probably need to configure
this pin as a GPIO input so it doesn't affect the D+ signal.
So it seems that you might be able to use the USB on the audiostix-II
(although I haven't done this to confirm things).
> makes it appear that one can use wire directly into the USB host on the
> flex connector. Is this true, or does the consoleVX board have additional
> necessary circuitry?
Yes - you can also connect to the USB host port on the flex connector.
Shuswap, BC, Canada