Touchscreen

Matthias Lange mlange at sec.t-labs.tu-berlin.de
Wed Nov 7 06:04:55 CET 2012


On 07.11.2012, at 02:56, Wajidali Whowe wrote:

> I am truely sorry to disturb again, however, based on various tests on different devices I realized that the anything at USB port is not detected by the mag... 
> For instance, on a laptop the trackpad and original keyboard are both detected and work perfect, however any additional keyboard or mouse at the USB port is neglected somehow.

That's because l4re does not feature a native USB driver/stack. Instead you can use an instance of L4Linux and configure it to act as an input server. Make sure to configure USB support and the right drivers into L4Linux. Then you need to put the correct devices onto the virtual L4Linux bus and connect L4Linux to the "ev" capability of mag.

Matthias.

> Best regards,
> 
> From: Wajidali Whowe <whowe123 at yahoo.com>
> To: "l4-hackers at os.inf.tu-dresden.de" <l4-hackers at os.inf.tu-dresden.de> 
> Sent: Wednesday, November 7, 2012 2:18 AM
> Subject: Re: Touchscreen
> 
> By the way usb-mouse is directly deactivated, I mean no-light at all... 
> 
> Regards,
> 
> From: Wajidali Whowe <whowe123 at yahoo.com>
> To: Martin Unzner <munzner at os.inf.tu-dresden.de>; "l4-hackers at os.inf.tu-dresden.de" <l4-hackers at os.inf.tu-dresden.de> 
> Sent: Wednesday, November 7, 2012 12:33 AM
> Subject: Re: Touchscreen
> 
> Dear Martin,
> 
> thank you very much for the answer. I have indeed a strange problem... Quite honestly, I am not sure whether the touchscreen is connected to a USB port but at the boot up I strangely see a mouse arrow which is vanished in 2-3 seconds. (by the way I have a mouse and a keyboard connected through the USB ports). I am not yet sure whether this is due to some crashes... 
> 
> Best Regards,
> 
> From: Martin Unzner <munzner at os.inf.tu-dresden.de>
> To: l4-hackers at os.inf.tu-dresden.de 
> Sent: Tuesday, November 6, 2012 9:53 AM
> Subject: Re: Touchscreen
> 
> Hi Wajidali,
> 
> as far as I am concerned, a touchscreen for x86 computers is handled like a mouse. So if your touchscreen is connected to like an internal USB port or via virtual PS/2, you should be able to run everything that has mouse support in Fiasco/L4, like DOpE or nitpicker (see also Adam's overview e-mail on graphics: http://os.inf.tu-dresden.de/pipermail/l4-hackers/2010/004454.html ).
> 
> Regards!
> 
> Martin
> 
> Am 05.11.2012 23:42, schrieb Wajidali Whowe:
>> Dear all,
>> 
>> do you have any experience on configuring the touchscreen for L4? I have an x86 computer with a touchscreen and do not know where to start. Does anyone have a small tip for me to start? 
>> 
>> Best Regards
>> 
>> 
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-- 
Dipl.-Inf. Matthias Lange <mlange at sec.t-labs.tu-berlin.de>
Security in Telecommunications
TU Berlin / Deutsche Telekom Laboratories
Ernst-Reuter-Platz 7, 10587 Berlin
Phone: +49 - 30 - 8353 58 553
Mobile: +49 - 160 - 587 28 07
Web: http://www.fgsect.de

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