zephyr

History

Maureen Helm 5a330f9b36 drivers: kscan: Extend callback arguments to 32-bits Extends the keyboard scan callback row and column arguments from 8-bits to 32-bits to support a touch panel driver implementation. Signed-off-by: Maureen Helm <maureen.helm@nxp.com>		2020-02-01 08:50:16 -05:00
..
src	drivers: kscan: Extend callback arguments to 32-bits	2020-02-01 08:50:16 -05:00
CMakeLists.txt	samples: drivers: kscan: Add kscan sample application	2019-10-16 13:29:21 -07:00
README.rst	samples: drivers: kscan: Add kscan sample application	2019-10-16 13:29:21 -07:00
prj.conf	samples: drivers: kscan: Add kscan sample application	2019-10-16 13:29:21 -07:00
prj_mec15xxevb_assy6853.conf	samples: drivers: kscan: Add kscan sample application	2019-10-16 13:29:21 -07:00
sample.yaml	tests: fix test identifiers	2019-12-09 15:53:44 -05:00

README.rst

.. kscan-sample:

KSCAN Interface
####################################

Overview
********

This sample demonstrates how to use the :ref:`KSCAN API <kscan>`.
Callbacks are registered that will write to the console indicating KSCAN events.
These events indicate key presses and releases.

Building and Running
********************

The sample can be built and executed on boards supporting a Keyboard Matrix.
Please connect a Keyboard Matrix to exercise the functionality. You need to
obtain the right keymap from the vendor because they vary across different
manufactures.

Sample output
=============

.. code-block:: console

   KSCAN test with a Keyboard matrix
   Note: You are expected to see several callbacks
   as you press and release keys!