On Fri, 3 Oct 2003, Mayur Thakare wrote:

>             i am a final year student of computer engineering, as part of 
>curriculam i am developing a driver of touch screen in linux. But even after 
>mind blogging hours of interpreting data on com port i failed to recognise 
>exactly what data come on port (touch screen, for which i am developing 
>driver, is connected to com port, this is an external touch screen)
>            can any one give me hint of exactly what data comes on port from 
>touch screen. I will be really greatful to you.

Do you have the hardware specifications for the touch screen?  If 
so, they should describe everything.  If you do not have them, 
did you attempt to get them from the vendor of the device, or 
search for them on google perhaps?  That is the best way to 
obtain them likely.

Otherwise you'll have to reverse engineer it yourself.  Without 
the hardware specifications, nobody can easily answer your 
question without reverse engineering it themselves, because 
every piece of hardware will work differently.  If all 
touchscreens output the same data, then there would only need to 
be one driver, and you wouldn't need to write one.  ;o)

-- 
Mike A. Harris

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