[Bug 1194] Touchscreen Jitter
bugzilla-daemon at bugzilla.openmoko.org
bugzilla-daemon at bugzilla.openmoko.org
Sat Feb 2 01:07:20 CET 2008
http://bugzilla.openmoko.org/cgi-bin/bugzilla/show_bug.cgi?id=1194
------- Additional Comments From cwixon at usa.net 2008-02-02 01:07 -------
Actually, I forgot about ts_print and ts_print_raw, which are command-line
programs that just spit out time-stamped touchscreen coordinates.
The _raw version gives you the unprocessed 10-bit values before they are mapped
into screen coordinates.
Just for amusement's sake, here's a short segment of ts_print_raw output with my
stylus held as stationary as possible near the center of the screen:
1201910359.402200: 509 493 1
1201910359.447114: 507 493 1
1201910359.462275: 508 493 1
1201910359.477234: 510 494 1
1201910359.492121: 506 494 1
1201910359.507215: 508 494 1
1201910359.582220: 508 493 1
1201910359.597139: 509 494 1
1201910359.612217: 508 494 1
1201910359.657124: 507 493 1
1201910359.672120: 507 494 1
1201910359.687227: 508 493 1
1201910359.732117: 509 494 1
1201910359.747130: 509 493 1
1201910359.762235: 508 494 1
1201910359.777138: 508 493 1
1201910359.792180: 507 494 1
1201910359.807220: 507 493 1
1201910359.822221: 508 493 1
1201910359.837121: 508 494 1
1201910359.882126: 507 493 1
1201910359.897226: 509 494 1
1201910359.912226: 508 493 1
1201910359.927135: 510 493 1
1201910359.942229: 507 494 1
1201910359.957128: 508 494 1
1201910359.972235: 507 493 1
1201910359.987216: 507 494 1
1201910360.002224: 508 494 1
1201910360.017245: 507 495 1
1201910360.032191: 509 494 1
1201910360.047166: 506 493 1
1201910360.062231: 508 494 1
1201910360.077140: 509 493 1
1201910360.092198: 507 493 1
1201910360.107140: 506 493 1
1201910360.122227: 507 493 1
1201910360.137170: 508 494 1
1201910360.152229: 509 493 1
1201910360.182216: 508 493 1
1201910360.197135: 507 494 1
1201910360.212218: 507 493 1
1201910360.227218: 508 493 1
1201910360.272225: 509 493 1
1201910360.287131: 508 494 1
1201910360.302224: 510 493 1
1201910360.317185: 506 494 1
1201910360.332227: 507 493 1
1201910360.347122: 507 494 1
1201910360.362195: 508 494 1
I'm not sure (without looking at the code) whether dejitter has been applied at
this point or not.
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