| .. zephyr:code-sample:: lp50xx |
| :name: LP50XX RGB LED |
| :relevant-api: led_interface |
| |
| Control up to 12 RGB LEDs connected to an LP50xx driver chip. |
| |
| Overview |
| ******** |
| |
| This sample controls up to 12 LEDs connected to a LP50xx driver. |
| |
| First, for each LED information is retrieved using the led_get_info syscall |
| and printed in the log messages. Next, from an infinite loop, a test pattern |
| (described below) is applied to all the LEDs simultaneously (using the |
| :c:func:`led_write_channels` syscall) and then to each LED one by one (using the |
| :c:func:`led_set_brightness` and :c:func:`led_set_color` syscalls). |
| |
| Test pattern |
| ============ |
| |
| For all the LEDs first (using channel API) and then for each LED one by one: |
| |
| For each color in red green blue white yellow purple cyan orange: |
| |
| - set the color |
| - turn on |
| - turn off |
| - set the brightness gradually to the maximum level |
| - turn off |
| |
| Building and Running |
| ******************** |
| |
| This sample can be built and executed on boards with an I2C LP5009, LP5012, |
| LP5018, LP5024, LP5030 or LP5036 LED driver connected. A node matching the |
| the device type binding should be defined in the board DTS files. |
| |
| As an example this sample provides a DTS overlay for the :zephyr:board:`lpcxpresso11u68` |
| board (:file:`boards/lpcxpresso11u68.overlay`). It assumes that a I2C LP5030 |
| LED driver (with 10 LEDs wired) is connected to the I2C0 bus at address 0x30. |
| |
| References |
| ********** |
| |
| - LP5009/LP5012: https://www.ti.com/lit/ds/symlink/lp5012.pdf |
| - LP5018/LP5024: https://www.ti.com/lit/ds/symlink/lp5024.pdf |
| - LP5030/LP5036: https://www.ti.com/lit/ds/symlink/lp5036.pdf |
