drashna/qmk_firmware
1
0
Fork 0
Code Activity Actions

Refactor ps2avrgb i2c ws2812 to core (#7183)

Browse source 
* Refactor ps2avrgb i2c ws2812 to core

* Refactor jj40 to use ws2812 i2c driver

* Refactor ps2avrgb template to use ws2812 i2c driver

* Add ws2812 stub files

* clang-format and driver config

* Add ws2812 driver docs

* Fix default config values

* Update tmk_core/protocol/vusb/main.c

Co-Authored-By: Drashna Jaelre <drashna@live.com>
This commit is contained in:
Joel Challis 2019-10-29 22:53:11 +00:00 • committed by Drashna Jaelre
parent 908aede957
commit 64b7cfe735
12 changed files with 101 additions and 83 deletions
Download patch file Download diff file Expand all files Collapse all files

1
docs/_summary.md
View file

@ -98,6 +98,7 @@
* [ISP Flashing Guide](isp_flashing_guide.md)
* [ARM Debugging Guide](arm_debugging.md)
* [I2C Driver](i2c_driver.md)
* [WS2812 Driver](ws2812_driver.md)
* [GPIO Controls](internals_gpio_control.md)
* [Proton C Conversion](proton_c_conversion.md)

33
docs/ws2812_driver.md Normal file
View file

@ -0,0 +1,33 @@
# WS2812 Driver
This driver powers the [RGB Lighting](feature_rgblight.md) and [RGB Matrix](feature_rgb_matrix.md) features.
Currently QMK supports the following addressable LEDs on AVR microcontrollers (however, the white LED in RGBW variants is not supported):
WS2811, WS2812, WS2812B, WS2812C, etc.
SK6812, SK6812MINI, SK6805
These LEDs are called "addressable" because instead of using a wire per color, each LED contains a small microchip that understands a special protocol sent over a single wire. The chip passes on the remaining data to the next LED, allowing them to be chained together. In this way, you can easily control the color of the individual LEDs.
## Driver configuration
### Bitbang
Default driver, the absence of configuration assumes this driver. To configure it, add this to your rules.mk:
```make
WS2812_DRIVER = bitbang
```
!> ARM does not yet support WS2182. Progress is being made, but we are not quite there, yet.
### I2C
Targeting boards where WS2812 support is offloaded to a 2nd MCU. Currently the driver is limited to AVR given the known consumers are ps2avrGB/BMC. To configure it, add this to your rules.mk:
```make
WS2812_DRIVER = i2c
```
Configure the hardware via your config.h:
```c
#define WS2812_ADDRESS 0xb0 // default: 0xb0
#define WS2812_TIMEOUT 100 // default: 100
```