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Semtech SAR sensor SX9324 is an evolution of the SX9310: It has 4 phases that can be configured to capture and process data from any of 3 CS pins and provide independent detection: proximity, table proximity or body proximity. Gather antenna data: echo sx9324-dev3 > trigger/current_trigger echo 1 > scan_elements/in_proximity0_en echo 1 > buffer/enable od -v -An --endian=big -t d2 -w2 /dev/iio\:device3 (at 10Hz, the default). Trigger events: Setting: thresh_falling_period: 2 (events) thresh_rising_period: 2 (events) in_proximity0_thresh_either_value: 300 in_proximity0_thresh_either_hysteresis: 72 using iio_event_monitor /dev/iio\:deviceX, approaching my hand to the antenna pad, I see: ... Event: time: 1634763907532035297, type: proximity, channel: 0, evtype: thresh, direction: falling Event: time: 1634763910138104640, type: proximity, channel: 0, evtype: thresh, direction: rising ... Datasheet: https://edit.wpgdadawant.com/uploads/news_file/program/2019/30184/tech_files/program_30184_suggest_other_file.pdf Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20220101203817.290512-4-gwendal@chromium.org Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.