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zephyr/drivers/led_strip/Kconfig

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drivers: led_strip: add public API for addressable LED strips This API covers drivers for strips, or strings, of individually addressable LEDs. Both RGB and grayscale LED strip drivers can be implemented within these APIs. The API only provides for updating the entire strip, since not all strips support updating individual LEDs without affecting the others. Subsequent patches will add individual driver support. Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
2017-10-17 04:02:23 +08:00
#
# Copyright (c) 2017 Linaro Limited
drivers: led_strip: Add driver for software-based WS2812B operation This driver uses a bit-banging based technique of generating a signal for the WS2812B LED strip. Since bit-banging is very timing sensitive, where each CPU cycle counts, the driver uses inline assembly to perform the most critical operataions. This initial version of the driver only supports a Cortex-M0 implementation, and can e.g. be used with the ZIP Halo LED strip for the BBC microbit: https://www.kitronik.co.uk/5625-zip-halo-for-the-bbc-microbit.html Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-02-20 21:10:54 +08:00
# Copyright (c) 2018 Intel Corporation
drivers: led_strip: add public API for addressable LED strips This API covers drivers for strips, or strings, of individually addressable LEDs. Both RGB and grayscale LED strip drivers can be implemented within these APIs. The API only provides for updating the entire strip, since not all strips support updating individual LEDs without affecting the others. Subsequent patches will add individual driver support. Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
2017-10-17 04:02:23 +08:00
#
# SPDX-License-Identifier: Apache-2.0
#
# Top-level configuration file for LED strip drivers.
menuconfig LED_STRIP
bool "LED strip drivers"
default n
help
Include LED strip drivers in the system configuration.
if LED_STRIP
config SYS_LOG_LED_STRIP_LEVEL
int "LED strip system log level"
depends on SYS_LOG
default 0
range 0 4
help
Sets the log level for LED strip drivers. You must have
system logging enabled.
Levels are:
0 OFF, do not write
1 ERROR, only write SYS_LOG_ERR
2 WARNING, write SYS_LOG_WRN in addition to previous level
3 INFO, write SYS_LOG_INF in addition to previous levels
4 DEBUG, write SYS_LOG_DBG in addition to previous levels
config LED_STRIP_INIT_PRIORITY
int "LED strip initialization priority"
default 90
help
System initialization priority for LED strip drivers.
# Hidden option. The extra byte enables efficient serialization and transmission
# for drivers which require 4 B on wire for every 3 B of color, e.g. APA102, but
# is not normally needed.
config LED_STRIP_RGB_SCRATCH
bool
default n
drivers: led_strip: add LPD880x driver LPD880x (e.g. LPD8803, LPD8806) devices are LED driver ICs which can be controlled via a reduced SPI interface (clock and data only), and support daisy chaining. Add an led_strip driver for these devices. Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
2017-10-17 23:20:33 +08:00
source "drivers/led_strip/Kconfig.lpd880x"
drivers: led_strip: add WS2812-ish driver The WS2812 LED driver IC has a one-wire interface which encodes bit values as pulse widths. The ICs themselves are basically shift registers. Roughly speaking, a "short" pulse shifts in a zero bit, a "long" pulse shifts in a one bit, and an inter-pulse gap exceeding a reset time threshold causes a pixel to latch the shifted-in color values. Each chip has an output pin for daisy chaining. Refer to the chip datsheets and comments in Kconfig.ws2812 for more details. To meet timing without hogging the core, this driver generates pulses using SPI. To work, this requires the MOSI line to stay low between SPI frames, and for inter-frame delays to be less than the reset pulse time. There are other ways do it (PWM + DMA on some SoCs, GPIO bit-banging if no other tasks need the core), but this is a reasonably general-purpose implementation. Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
2017-10-17 11:28:15 +08:00
source "drivers/led_strip/Kconfig.ws2812"
drivers: led_strip: Add driver for software-based WS2812B operation This driver uses a bit-banging based technique of generating a signal for the WS2812B LED strip. Since bit-banging is very timing sensitive, where each CPU cycle counts, the driver uses inline assembly to perform the most critical operataions. This initial version of the driver only supports a Cortex-M0 implementation, and can e.g. be used with the ZIP Halo LED strip for the BBC microbit: https://www.kitronik.co.uk/5625-zip-halo-for-the-bbc-microbit.html Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2018-02-20 21:10:54 +08:00
source "drivers/led_strip/Kconfig.ws2812b_sw"
led_strip: add a APA102 driver. The APA102 is a RGB LED with integrated controller. LEDs can be daisy-chained and use SPI for communication. The SPI port is configured via Device Tree. Tested on the Adafruit Trinket M0. Signed-off-by: Michael Hope <mlhx@google.com>
2018-02-13 05:35:20 +08:00
source "drivers/led_strip/Kconfig.apa102"
drivers: led_strip: add public API for addressable LED strips This API covers drivers for strips, or strings, of individually addressable LEDs. Both RGB and grayscale LED strip drivers can be implemented within these APIs. The API only provides for updating the entire strip, since not all strips support updating individual LEDs without affecting the others. Subsequent patches will add individual driver support. Signed-off-by: Marti Bolivar <marti.bolivar@linaro.org>
2017-10-17 04:02:23 +08:00
endif # LED_STRIP