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Rewrite APA102 support (#10894)

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* Rewrite APA102 support

The APA102 source was broken by commit 16a15c1cfc as it did not include the
quantum header. This commit addresses that, as well as other issues with
transferring bytes over the SPI interface, i.e. it was not setting the
clock pin back to low after sending a bit.

The deviation when sending the end frame is kept, but updated to the
latest from the referenced project.

Finally, these changes expose the global LED brightness parameter
of the APA102. Brightness values are configurable through
`APA102_DEFAULT_BRIGHTNESS` and `APA102_MAX_BRIGHTNESS`.

* Fix typo in led brightness extern

* Move driver out of AVR directory and add delay for ARM

* Experimental APA102 support on AVR and ARM

Co-authored-by: Alde Rojas <hello@alde.io>

* Refactor apa102_send_byte() calls to a loop

* Implement io_wait function for ARM

* Move APA102 drivers to own directory, fix copyright notice

* Add APA102 keymap to handwired/onekey

* Simplify RGBLIGHT_ENABLE/DRIVER option handling

Co-authored-by: Mikkel Jeppesen <2756925+Duckle29@users.noreply.github.com>
This commit is contained in:
Aldehir Rojas 2020-12-29 18:28:49 -06:00 • committed by GitHub
parent 7dd99f2b22
commit 4f2f21dc05
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12 changed files with 259 additions and 123 deletions
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22
docs/feature_rgb_matrix.md
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@ -129,6 +129,28 @@ Configure the hardware via your `config.h`:
---
### APA102 :id=apa102
There is basic support for APA102 based addressable LED strands. To enable it, add this to your `rules.mk`:
```makefile
RGB_MATRIX_ENABLE = yes
RGB_MATRIX_DRIVER = APA102
```
Configure the hardware via your `config.h`:
```c
// The pin connected to the data pin of the LEDs
#define RGB_DI_PIN D7
// The pin connected to the clock pin of the LEDs
#define RGB_CI_PIN D6
// The number of LEDs connected
#define DRIVER_LED_TOTAL 70
```
---
From this point forward the configuration is the same for all the drivers. The `led_config_t` struct provides a key electrical matrix to led index lookup table, what the physical position of each LED is on the board, and what type of key or usage the LED if the LED represents. Here is a brief example:
```c