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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-05-14 21:57:38 +0000 |
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| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-05-14 21:57:38 +0000 |
| commit | 5d5fb0b5646aed4cb074eb317fc09170645c7a3f (patch) | |
| tree | aed7b7c4f84c4b2016b606b390e818023d2c3841 /nuttx/Documentation | |
| parent | 8c194ec17b4fc4810bde451e803d9cb29db28e59 (diff) | |
| download | px4-nuttx-5d5fb0b5646aed4cb074eb317fc09170645c7a3f.tar.gz px4-nuttx-5d5fb0b5646aed4cb074eb317fc09170645c7a3f.tar.bz2 px4-nuttx-5d5fb0b5646aed4cb074eb317fc09170645c7a3f.zip | |
Improved thresholding logic in the STMPE11 driver; NxWM: Oops minimizing wrong application
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4737 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/Documentation')
| -rw-r--r-- | nuttx/Documentation/NuttxPortingGuide.html | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/nuttx/Documentation/NuttxPortingGuide.html b/nuttx/Documentation/NuttxPortingGuide.html index 4ded08f0f..15019ad10 100644 --- a/nuttx/Documentation/NuttxPortingGuide.html +++ b/nuttx/Documentation/NuttxPortingGuide.html @@ -4730,6 +4730,15 @@ build <code>CONFIG_STMPE11_REGDEBUG</code>: Enabled very low register-level debug output. Requires <code>CONFIG_DEBUG</code>. </li> + <li> + <code>CONFIG_STMPE11_THRESHX</code> and <code>CONFIG_STMPE11_THRESHY</code>: + STMPE11 touchscreen data comes in a a very high rate. New touch positions + will only be reported when the X or Y data changes by these thresholds. + This trades reduces data rate for some loss in dragging accuracy. The + STMPE11 is configure for 12-bit values so the raw ranges are 0-4095. So + for example, if your display is 320x240, then THRESHX=13 and THRESHY=17 + would correspond to one pixel. Default: 12 + </li> </ul> <h3>Analog Devices</h3> |