d885957fe8
This updates the documentation of all the NXP boards to use the new `zephyr:board::` directive. Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
38 lines
1.4 KiB
ReStructuredText
38 lines
1.4 KiB
ReStructuredText
.. zephyr:code-sample:: is31fl3733
|
|
:name: IS31FL3733 LED Matrix
|
|
:relevant-api: led_interface
|
|
|
|
Control a matrix of up to 192 LEDs connected to an IS31FL3733 driver chip.
|
|
|
|
Overview
|
|
********
|
|
|
|
This sample controls a matrix of up to 192 LEDs. The sample performs the
|
|
following test steps in an infinite loop:
|
|
|
|
- Set all LEDs to full brightness with :c:func:`led_write_channels` API
|
|
- Disable upper quadrant of LED array with :c:func:`led_write_channels` API
|
|
- Dim each LED in sequence using :c:func:`led_set_brightness` API
|
|
- Toggle each LED in sequency using :c:func:`led_on` and :c:func:`led_of` APIs
|
|
- Toggle between low or high current limit using :c:func:`is31fl3733_current_limit`
|
|
API, and repeat the above tests
|
|
|
|
Sample Configuration
|
|
====================
|
|
|
|
The number of LEDs can be limited using the following sample specific Kconfigs:
|
|
|
|
- :kconfig:option:`CONFIG_LED_ROW_COUNT`
|
|
- :kconfig:option:`CONFIG_LED_COLUMN_COUNT`
|
|
|
|
Building and Running
|
|
********************
|
|
|
|
This sample can be run on any board with an IS31FL3733 LED driver connected via
|
|
I2C, and a node with the :dtcompatible:`issi,is31fl3733` compatible present in its devicetree.
|
|
|
|
This sample provides a DTS overlay for the :zephyr:board:`frdm_k22f` board
|
|
(:file:`boards/frdm_k22f.overlay`). It assumes that the IS31FL3733 LED
|
|
controller is connected to I2C0, at address 0x50. The SDB GPIO should be
|
|
connected to PTC2 (A3 on the arduino header)
|