39 lines
1.7 KiB
ReStructuredText
39 lines
1.7 KiB
ReStructuredText
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``touchscreen`` Touchscreen Events
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==================================
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This configuration implements a simple touchscreen test at
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``apps/examples/touchscreen``. This test will create an empty X11 window and will
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print the touchscreen output as it is received from the simulated touchscreen
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driver.
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- ``CONFIG_NSH_BUILTIN_APPS`` – Build the touchscreen test as an NSH built-in
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function. Default: Built as a standalone program.
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- ``CONFIG_EXAMPLES_TOUCHSCREEN_MINOR`` – The minor device number. Minor ``N``
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corresponds to touchscreen device ``/dev/inputN``. Note this value must with
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``CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH``. Default ``0``.
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- ``CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH`` – The path to the touchscreen device.
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This must be consistent with ``CONFIG_EXAMPLES_TOUCHSCREEN_MINOR``. Default:
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``/dev/input0``.
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- ``CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES`` – This number of samples is collected
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and the program terminates. Default: Samples are collected indefinitely.
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- ``CONFIG_EXAMPLES_TOUCHSCREEN_MOUSE`` – The touchscreen test can also be
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configured to work with a mouse driver by setting this option.
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The following additional configurations must be set in the NuttX configuration
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file:
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- ``CONFIG_INPUT=y`` (plus any touchscreen-specific settings)
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The following must also be defined in your apps configuration file:
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- ``CONFIG_EXAMPLES_TOUCHSREEN=y``
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This example code will call ``boardctl()`` to setup the touchscreen driver for
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texting. The implementation of ``boardctl()`` will require that board- specific
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logic provide the following interfaces that will be called by the ``boardctl()``
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in order to initialize the touchscreen hardware:
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.. code-block:: C
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int board_tsc_setup(int minor);
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