Am Mo 13. April 2009 schrieb morphis: > On 09.04.2009 06:25, Nelson Castillo wrote: > > On Wed, Apr 8, 2009 at 11:16 AM, Nelson Castillo > > <[email protected]> wrote: > > (cut) > >>> Sorry I forgot to add the link. Here it is: > >>> http://git.gnufiish.org/?p=gnufiish.git;a=blob;f=arch/arm/mach-s3c2440/mach-glofiish.c;h=bdf4d1e2d235a47ddc0c282d33fd7df1fa94036a;hb=HEAD > > > > BTW, I'm working on this code now and I had trouble with "delay". Thus > > I checked yours to see what you were using. > > > > 376 .delay = 10000, > > 377 .presc = 50000000 / 1000000, /* 50 MHz PCLK / 1MHz */ > > 378 //.presc = 0xff, /* slow as we can go */ > > > > You might want to use the original .presc until you get the TS to work > > the first time... I tested with the values you have and the TS > > wouldn't work for me. > > Ok, I merged with current andy-tracking to get a current ts filter chain > but it is still the result. I produced a little example for the current > problem with touch_test.py. I only pressed my finger on one point of the > screen. The app reports: > Move: (352, 242) > Down: (352, 242) > Move: (380, 253) > Move: (394, 257) > Move: (409, 268) > Move: (420, 284) > Move: (426, 291) > Move: (429, 295) > Move: (430, 298) > Move: (433, 301) > Move: (433, 302) > Move: (434, 302) > Move: (434, 303) > Move: (433, 303) > Move: (434, 303) > Move: (433, 303) > Move: (436, 304) > Move: (435, 304) > Move: (434, 304) > Move: (433, 304) > Move: (430, 304) > Move: (431, 304) > Move: (434, 304) > Move: (433, 304) > Move: (434, 304) > Move: (435, 303) > Move: (436, 303) > Move: (434, 300) > Move: (430, 292) > Up: (430, 292) > > So the cursor moves up to top left corner while I am press one point of > the screen. Any hints which calibration of the filters is wrong? > > As your finger doesn't create a point of contact on ts, but rather a quite large area, this dump looks quite smooth and reasonable. Before complaining about performance of a particular subsystem, it's mandatory to learn basics about it's operation principles.
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