Hi Piotr,
Have you studied the errata for the processor? IIRC some issues and
workarounds with the TSC are documented there.
-- Bas
On 24-2-2014 12:51, [email protected] wrote:
Hi,
I step in as everybody looking to find solutions for TS issues.
Actually, I'm still working on solving it. However, I have some tips
and "discoveries" I'd like to share, meby someone will find it useful.
1) I have just external TS, no cape at all, the TS is 10 inch.
2) I found "after many hours :(" that ti_am335x_tsc driver can not be
build in, and must be loaded as a module after the cape for TSC is
loaded. That's because I use "overlay-ed" cape for TSC. Even though it
is set to be loaded in uEnv.txt!
3) Big touch screen has bigger capacity, it results in permanent
"auto-touch" event generation, driving me nuts since LCD7 TS works
nicely. I have discovered, that adjusting delays in driver is the
solution!!! There are "open-delay", "sample-delay", "charging-delay"
defined in ti_am335x_tscad.h file. They have fundamental influence on
this effect. Someone has mentioned that "hardware issue" was observed
as a few "auto-touch" glitches. That is exactly this, just in case of
a smaller TS, it is not so evident.
So, concluding, now I'm focusing on adjusting delays. I'll let you
know my setting for this 10inch TS.
Regards,
Piotr
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