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| author | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2012-05-14 21:57:38 +0000 |
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| committer | patacongo <patacongo@7fd9a85b-ad96-42d3-883c-3090e2eb8679> | 2012-05-14 21:57:38 +0000 |
| commit | 383e7a0c97e0e559da8eb2c2a128153ad068d67a (patch) | |
| tree | aed7b7c4f84c4b2016b606b390e818023d2c3841 /nuttx/include | |
| parent | db2bfa3e69fee84003a2fe13632c21046a1dc5b4 (diff) | |
| download | px4-firmware-383e7a0c97e0e559da8eb2c2a128153ad068d67a.tar.gz px4-firmware-383e7a0c97e0e559da8eb2c2a128153ad068d67a.tar.bz2 px4-firmware-383e7a0c97e0e559da8eb2c2a128153ad068d67a.zip | |
Improved thresholding logic in the STMPE11 driver; NxWM: Oops minimizing wrong application
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4737 7fd9a85b-ad96-42d3-883c-3090e2eb8679
Diffstat (limited to 'nuttx/include')
| -rw-r--r-- | nuttx/include/nuttx/input/stmpe11.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/nuttx/include/nuttx/input/stmpe11.h b/nuttx/include/nuttx/input/stmpe11.h index 5ecc53af1..2436437e6 100644 --- a/nuttx/include/nuttx/input/stmpe11.h +++ b/nuttx/include/nuttx/input/stmpe11.h @@ -86,6 +86,13 @@ * Disable driver temperature sensor functionality. * CONFIG_STMPE11_REGDEBUG * Enabled very low register-level debug output. Requires CONFIG_DEBUG. + * CONFIG_STMPE11_THRESHX and CONFIG_STMPE11_THRESHY + * 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 */ /* The STMPE811 interfaces with the target CPU via a I2C or SPI interface. The pin IN_1 @@ -127,6 +134,16 @@ # error "Work queue support required. CONFIG_SCHED_WORKQUEUE must be selected." #endif +/* Thresholds */ + +#ifndef CONFIG_STMPE11_THRESHX +# define CONFIG_STMPE11_THRESHX 12 +#endif + +#ifndef CONFIG_STMPE11_THRESHY +# define CONFIG_STMPE11_THRESHY 12 +#endif + /* Debug output */ #ifndef CONFIG_DEBUG |