Openmoko Bug #1194: Touchscreen Jitter
Openmoko Public Trac
bugs at docs.openmoko.org
Sat Oct 18 13:12:30 CEST 2008
#1194: Touchscreen Jitter
---------------------------------+------------------------------------------
Reporter: mickey at openmoko.org | Owner: openmoko-kernel
Type: defect | Status: new
Priority: high | Milestone:
Component: System Software | Version: unspecified
Severity: normal | Resolution:
Keywords: | Blockedby:
Blocking: |
---------------------------------+------------------------------------------
Comment(by Batchyx):
I've implemented a simple-but-working dejittering tslib plugin that's a
bit more aggressive. It's basically a stupid lowpass filter and then a
filter that ignore small movements.
But one of the problems that still remain is when the touchpad reported a
release event followed by a press event while dragging.
Before (with a stylus) :
1223807388.426237: 351 344 1
1223807388.451233: 351 344 1
1223807388.471196: 351 345 1
1223807388.496021: 351 345 1
1223807388.526362: 351 345 1
1223807388.551225: 351 345 1
1223807388.576265: 352 345 1
1223807388.606316: 352 345 1
1223807388.631304: 352 345 1
1223807388.656241: 352 344 1
1223807388.681232: 352 345 1
After :
1223807524.541163: 395 346 1
1223807524.566154: 395 346 1
1223807524.596249: 395 346 1
1223807524.621214: 395 346 1
1223807524.646169: 395 346 1
1223807524.676269: 395 346 1
1223807524.701218: 395 346 1
1223807524.726160: 395 346 1
1223807524.746146: 395 346 1
1223807524.776189: 395 346 1
1223807524.806265: 395 346 1
1223807524.836228: 395 346 1
1223807524.861160: 395 346 1
1223807524.881208: 395 346 1
1223807524.911142: 395 346 1
1223807524.946203: 395 346 1
1223807524.971223: 395 346 1
1223807524.996176: 395 346 1
Before (with a finger) :
1223807468.901233: 246 541 1
1223807468.936273: 247 541 1
1223807468.966163: 247 541 1
1223807468.996255: 247 541 1
1223807469.026267: 247 541 1
1223807469.056241: 247 541 1
1223807469.091309: 246 541 1
1223807469.121207: 246 541 1
1223807469.151334: 246 542 1
1223807469.181235: 245 542 1
1223807469.211325: 245 542 1
1223807469.241233: 245 543 1
1223807469.271311: 244 544 1
1223807469.301354: 244 543 1
1223807469.326284: 244 544 1
1223807469.356265: 244 544 1
1223807469.386287: 244 544 1
1223807469.416234: 244 544 1
1223807469.441288: 244 544 1
1223807469.466151: 243 544 1
1223807469.491217: 243 545 1
1223807469.516293: 242 545 1
After (with a finger) :
1223807767.166412: 162 550 1
1223807767.186402: 162 550 1
1223807767.206402: 161 551 1
1223807767.226347: 160 551 1
1223807767.251349: 160 551 1
1223807767.276379: 160 551 1
1223807767.296340: 160 551 1
1223807767.321160: 160 551 1
1223807767.341332: 159 551 1
1223807767.366164: 159 551 1
1223807767.391349: 159 551 1
1223807767.416355: 159 551 1
1223807767.436323: 159 551 1
1223807767.461164: 159 551 1
1223807767.486411: 159 551 1
1223807767.516417: 159 551 1
1223807767.541325: 159 551 1
One problem that still remain is when the touchscreen report a release
then a press when we are dragging ...
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1194#comment:14>
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