df294e34e1
Fixes bad usage of single backticks in lieu of double backticks for rendering inline literals, or simple '*' for italics. When appropriate, a better construct than double backticks has been selected (ex. :file:, :kconfig:option:, :c:func:, ...), or proper :ref: have been used if the original intention was to have a link. Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
38 lines
1.4 KiB
ReStructuredText
38 lines
1.4 KiB
ReStructuredText
.. zephyr:code-sample:: is31fl3733
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:name: IS31FL3733 LED Matrix
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:relevant-api: led_interface
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Control a matrix of up to 192 LEDs connected to an IS31FL3733 driver chip.
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Overview
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********
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This sample controls a matrix of up to 192 LEDs. The sample performs the
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following test steps in an infinite loop:
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- Set all LEDs to full brightness with :c:func:`led_write_channels` API
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- Disable upper quadrant of LED array with :c:func:`led_write_channels` API
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- Dim each LED in sequence using :c:func:`led_set_brightness` API
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- Toggle each LED in sequency using :c:func:`led_on` and :c:func:`led_of` APIs
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- Toggle between low or high current limit using :c:func:`is31fl3733_current_limit`
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API, and repeat the above tests
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Sample Configuration
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====================
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The number of LEDs can be limited using the following sample specific Kconfigs:
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- :kconfig:option:`CONFIG_LED_ROW_COUNT`
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- :kconfig:option:`CONFIG_LED_COLUMN_COUNT`
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Building and Running
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********************
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This sample can be run on any board with an IS31FL3733 LED driver connected via
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I2C, and a node with the :dtcompatible:`issi,is31fl3733` compatible present in its devicetree.
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This sample provides a DTS overlay for the :ref:`frdm_k22f` board
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(:file:`boards/frdm_k22f.overlay`). It assumes that the IS31FL3733 LED
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controller is connected to I2C0, at address 0x50. The SDB GPIO should be
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connected to PTC2 (A3 on the arduino header)
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