Thread (28 messages) 28 messages, 7 authors, 2014-11-17

[PATCH 1/4] input: touchscreen: ti_am335x_tsc Interchange touchscreen and ADC steps

From: richardcochran@gmail.com (Richard Cochran)
Date: 2014-11-07 10:17:37
Also in: linux-devicetree, linux-iio, linux-input, linux-omap, lkml

On Fri, Nov 07, 2014 at 11:04:05AM +0530, Vignesh R wrote:
Currently, there is too much noise in the TSC hardware that is being
removed by delta filtering. I tested TSC unit by removing filtering
logic, the performance was not at all satisfactory. The cursor jumps
wayward and smooth circles cannot be drawn. Looks like delta filtering
cannot be removed as of now. May be I will try and address it in future.
FWIW, on the boards that I tested, I printed the measured values out,
and I found that with 5 repetitions, I got the same value 5 times,
plus or minus a very small delta.

Thanks,
Richard
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