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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/drivers | |
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/drivers')
-rw-r--r-- | nuttx/drivers/input/stmpe11_tsc.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/nuttx/drivers/input/stmpe11_tsc.c b/nuttx/drivers/input/stmpe11_tsc.c index 70eb11259..afe27ac89 100644 --- a/nuttx/drivers/input/stmpe11_tsc.c +++ b/nuttx/drivers/input/stmpe11_tsc.c @@ -986,19 +986,17 @@ void stmpe11_tscworker(FAR struct stmpe11_dev_s *priv, uint8_t intsta) goto ignored; } - /* Perform a thresholding operation so that the results will be more stable */ + /* Perform a thresholding operation so that the results will be more stable. + * If the difference from the last sample is small, then ignore the event. + * REVISIT: Should a large change in pressure also generate a event? + */ xdiff = x > priv->threshx ? (x - priv->threshx) : (priv->threshx - x); ydiff = y > priv->threshy ? (y - priv->threshy) : (priv->threshy - y); - /* If the difference from the last sample is small, then ignore the event. - * REVISIT: Should a large change in pressure also generate a event? - */ - - if (xdiff + ydiff < 6) + if (xdiff < CONFIG_STMPE11_THRESHX && ydiff < CONFIG_STMPE11_THRESHY) { - /* Little or no change in position ... don't report anything. - */ + /* Little or no change in either direction ... don't report anything. */ goto ignored; } |