Matlab and USB communications

1
Hello all,
I've been trying to get a piece of kit plugged on a USB port to
communicate with a Matlab program. I have been far from being
successful. Does anyone know how to talk to a USB port using Matlab?
Thanks for your time, Matthieu Atkinson
2
Hi Matthieu,

How you talk to the USB depends on what the device connected to it is.
For keyboards and mice, everything works as regular ADB mice/keyboards.
This is also true of USB devices that emulate ADB devices (Griffin's
iMate). Other devices, such as the keyspan serial adapter, act as a
serial port and can be accessed via psychserial. Another device that is
used by people in the forum, the ActiveWire card, is accessed in Matlab
via a .mex file that hooks in to the driver. What type of device are
you trying to connect?

Hope this helps,

Chris


park wrote:

> Hello all,
> I've been trying to get a piece of kit plugged on a USB port to
> communicate with a Matlab program. I have been far from being
> successful. Does anyone know how to talk to a USB port using Matlab?
> Thanks for your time, Matthieu Atkinson
>
>
>
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>
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3
Matthieu,

Chris Taylor's reply was exactly right, with USB you program to the
device and not to the port, and you will need a C mex file to do that
from MATLAB.

What is the USB device which you are trying to connect and on what OS ?

If it is a USB HID device and you are using OS X then we provide a mex
file in the OS X Psychtoolbox alpha 0.3 release which should to read
from any USB HID device. So far I have used it with with keyboards,
mice and gamepads.

Best,

Allen

PS

The latest Windows MATLAB release lets you call a dll directly from
MATLAB, so that might be something to try in place of writing a mex
file in case you are using Windows.



On Thursday, September 25, 2003, at 02:02 AM, Christopher Taylor wrote:

> Hi Matthieu,
>
> How you talk to the USB depends on what the device connected to it is.
> For keyboards and mice, everything works as regular ADB mice/keyboards.
> This is also true of USB devices that emulate ADB devices (Griffin's
> iMate). Other devices, such as the keyspan serial adapter, act as a
> serial port and can be accessed via psychserial. Another device that is
> used by people in the forum, the ActiveWire card, is accessed in Matlab
> via a .mex file that hooks in to the driver. What type of device are
> you trying to connect?
>
> Hope this helps,
>
> Chris
>
>
> park wrote:
>
>> Hello all,
>> I've been trying to get a piece of kit plugged on a USB port to
>> communicate with a Matlab program. I have been far from being
>> successful. Does anyone know how to talk to a USB port using Matlab?
>> Thanks for your time, Matthieu Atkinson
>>
>>
>>
>> *Yahoo! Groups Sponsor*
>> ADVERTISEMENT
>> <http://rd.yahoo.com/M=194081.3897168.5135684.1261774/D=egroupweb/
>> S=1707208961:HM/A=1706996/R=0/SIG=11p5b9ris/*http://www.ediets.com/
>> start.cfm?code=30509&media=atkins>
>>
>>
>>
>> http://psychtoolbox.org
>> POST a message to: psychtoolbox@yahoogroups.com
>> UNSUBSCRIBE by sending a blank message to:
>> psychtoolbox-unsubscribe@yahoogroups.com
>>
>> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service
>> <http://docs.yahoo.com/info/terms/>.
>
>
>
>
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