nanogui: Thread: (SA1100)TouchScreen's Edge!?

I opened drivers/char/ucb1200_ts.c
Changed x_rev and y_rev to 1
then touch screen can work well.

BUT

If you press point close to the left and right 
edges of the touchscreen (refer to the landscape 
format), the point activated is around 0.4cm away 
(towards the centre of the screen) from the point 
where the pressure is applied.

How can it work more better?

Windy Bian

 

You can always calibratate and cacluate the raw x and y edges a little 
better, but alot depends on how good your touchscreen is, and how good the 
jitter control is in the touchscreen driver.  I have an fairly good SA1100 
touchscreen running right now, and I still get a lot of jitter and bad 
points, especially as I move to the edge of the screen.  Thats just part of 
the game, I'm afraid.

Jordan

On Thursday 23 August 2001 02:04, Windy Bian mentioned:
> I opened drivers/char/ucb1200_ts.c
> Changed x_rev and y_rev to 1
> then touch screen can work well.
> 
> BUT
> 
> If you press point close to the left and right 
> edges of the touchscreen (refer to the landscape 
> format), the point activated is around 0.4cm away 
> (towards the centre of the screen) from the point 
> where the pressure is applied.
> 
> How can it work more better?
> 
> Windy Bian
> 
>