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Improved thresholding logic in the STMPE11 driver; NxWM: Oops minimizing wrong application

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4737 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
2012-05-14 21:57:38 +00:00
parent db2bfa3e69
commit 383e7a0c97
11 changed files with 69 additions and 13 deletions
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nuttx/drivers/input/stmpe11_tsc.c
+6 -8
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@@ -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;
}