1# Copyright (c) 2017 Linaro Limited 2# Copyright (c) 2019 Nordic Semiconductor ASA 3# 4# SPDX-License-Identifier: Apache-2.0 5 6# The following blog post is an excellent resource about pulse timing: 7# 8# https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/ 9 10config WS2812_STRIP_SPI 11 bool "WS2812 LED strip SPI driver" 12 default y 13 depends on DT_HAS_WORLDSEMI_WS2812_SPI_ENABLED 14 select SPI if $(dt_compat_on_bus,$(DT_COMPAT_WORLDSEMI_WS2812_SPI),spi) 15 help 16 Enable driver for WS2812 (and compatibles) LED strip using SPI. 17 The SPI driver is portable, but requires significantly more 18 memory (1 byte of overhead per bit of pixel data). 19 20config WS2812_STRIP_I2S 21 bool "WS2812 LED strip I2S driver" 22 default y 23 depends on DT_HAS_WORLDSEMI_WS2812_I2S_ENABLED 24 select I2S if $(dt_compat_on_bus,$(DT_COMPAT_WORLDSEMI_WS2812_I2S),i2s) 25 help 26 Enable driver for WS2812 (and compatibles) LED strip using I2S. 27 Uses the I2S peripheral, memory usage is 4 bytes per color, 28 times the number of pixels. A few more for the start and end 29 delay. The reset delay has a coarse resolution of ~20us. 30 31config WS2812_STRIP_GPIO 32 bool "WS2812 LED strip GPIO driver" 33 # Only an Cortex-M0 inline assembly implementation for the nRF51 34 # is supported currently. 35 default y 36 depends on DT_HAS_WORLDSEMI_WS2812_GPIO_ENABLED 37 depends on SOC_SERIES_NRF51X 38 select LED_STRIP_RGB_SCRATCH 39 help 40 Enable driver for WS2812 (and compatibles) LED strip directly controlling with GPIO. 41 The GPIO driver does bit-banging with inline assembly, 42 and is not available on all SoCs. 43 44 Note that this driver is not compatible with the Everlight B1414 45 controller. 46 47config WS2812_STRIP_RPI_PICO_PIO 48 bool "WS2812 LED strip Raspberry Pi Pico PIO driver" 49 default y 50 depends on DT_HAS_WORLDSEMI_WS2812_RPI_PICO_PIO_ENABLED 51 select PICOSDK_USE_PIO 52 help 53 Enable driver for WS2812 (and compatibles) LED strip using 54 the RaspberryPi Pico's PIO. 55
