| /* |
| * Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/dt-bindings/led/led.h> |
| |
| &spi3 { |
| /* Workaround to support WS2812 driver */ |
| line-idle-low; |
| |
| led_strip: ws2812@0 { |
| compatible = "worldsemi,ws2812-spi"; |
| |
| /* SPI */ |
| reg = <0>; /* ignored, but necessary for SPI bindings */ |
| spi-max-frequency = <6400000>; |
| |
| /* WS2812 */ |
| chain-length = <1>; /* arbitrary; change at will */ |
| spi-cpha; |
| spi-one-frame = <0xf0>; /* 11110000: 625 ns high and 625 ns low */ |
| spi-zero-frame = <0xc0>; /* 11000000: 312.5 ns high and 937.5 ns low */ |
| color-mapping = <LED_COLOR_ID_GREEN |
| LED_COLOR_ID_RED |
| LED_COLOR_ID_BLUE>; |
| }; |
| }; |
| |
| &pinctrl { |
| spim3_default: spim3_default { |
| group2 { |
| pinmux = <SPIM3_MOSI_GPIO18>; |
| }; |
| }; |
| }; |
| |
| / { |
| aliases { |
| led-strip = &led_strip; |
| }; |
| }; |
