| .. 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 `issi,is31fl3733` compatible present in its devicetree. |
| |
| This sample provides a DTS overlay for the :ref:`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) |
