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# Copyright (c) 2017 Linaro Limited
# Copyright (c) 2019 Nordic Semiconductor ASA
#
# SPDX-License-Identifier: Apache-2.0
# The following blog post is an excellent resource about pulse timing:
#
# https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/
config WS2812_STRIP_SPI
bool "WS2812 LED strip SPI driver"
default y
depends on DT_HAS_WORLDSEMI_WS2812_SPI_ENABLED
select SPI if $(dt_compat_on_bus,$(DT_COMPAT_WORLDSEMI_WS2812_SPI),spi)
help
Enable driver for WS2812 (and compatibles) LED strip using SPI.
The SPI driver is portable, but requires significantly more
memory (1 byte of overhead per bit of pixel data).
config WS2812_STRIP_I2S
bool "WS2812 LED strip I2S driver"
default y
depends on DT_HAS_WORLDSEMI_WS2812_I2S_ENABLED
select I2S if $(dt_compat_on_bus,$(DT_COMPAT_WORLDSEMI_WS2812_I2S),i2s)
help
Enable driver for WS2812 (and compatibles) LED strip using I2S.
Uses the I2S peripheral, memory usage is 4 bytes per color,
times the number of pixels. A few more for the start and end
delay. The reset delay has a coarse resolution of ~20us.
config WS2812_STRIP_GPIO
bool "WS2812 LED strip GPIO driver"
# Only an Cortex-M0 inline assembly implementation for the nRF51
# is supported currently.
default y
depends on DT_HAS_WORLDSEMI_WS2812_GPIO_ENABLED
depends on SOC_SERIES_NRF51X
select LED_STRIP_RGB_SCRATCH
help
Enable driver for WS2812 (and compatibles) LED strip directly controlling with GPIO.
The GPIO driver does bit-banging with inline assembly,
and is not available on all SoCs.
Note that this driver is not compatible with the Everlight B1414
controller.
config WS2812_STRIP_RPI_PICO_PIO
bool "WS2812 LED strip Raspberry Pi Pico PIO driver"
default y
depends on DT_HAS_WORLDSEMI_WS2812_RPI_PICO_PIO_ENABLED
select PICOSDK_USE_PIO
help
Enable driver for WS2812 (and compatibles) LED strip using
the RaspberryPi Pico's PIO.