mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-12-13 13:46:51 +06:00
134 lines
4.6 KiB
Markdown
134 lines
4.6 KiB
Markdown
|
# AW20216S Driver {#aw20216s-driver}
|
||
|
|
||
|
SPI 18x12 LED matrix driver by Awinic. Supports a maximum of four drivers, each controlling up to 216 single-color LEDs, or 72 RGB LEDs.
|
||
|
|
||
|
[AW20216S Datasheet](https://doc.awinic.com/doc/20230609wm/b6a9c70b-e1bd-495b-925f-bcbed3fc2620.pdf)
|
||
|
|
||
|
## Usage {#usage}
|
||
|
|
||
|
The AW20216S driver code is automatically included if you are using the [RGB Matrix](../features/rgb_matrix) feature with the `aw20216s` driver set, and you would use those APIs instead.
|
||
|
|
||
|
However, if you need to use the driver standalone, add this to your `rules.mk`:
|
||
|
|
||
|
```make
|
||
|
COMMON_VPATH += $(DRIVER_PATH)/led
|
||
|
SRC += aw20216s.c
|
||
|
SPI_DRIVER_REQUIRED = yes
|
||
|
```
|
||
|
|
||
|
## Basic Configuration {#basic-configuration}
|
||
|
|
||
|
Add the following to your `config.h`:
|
||
|
|
||
|
|Define |Default |Description |
|
||
|
|-----------------------------|-------------|-------------------------------------------------------------|
|
||
|
|`AW20216S_CS_PIN_1` |*Not defined*|The GPIO pin connected to the first driver's Chip Select pin |
|
||
|
|`AW20216S_CS_PIN_2` |*Not defined*|The GPIO pin connected to the second driver's Chip Select pin|
|
||
|
|`AW20216S_EN_PIN` |*Not defined*|The GPIO pin connected to the drivers' Enable pins |
|
||
|
|`AW20216S_SPI_MODE` |`0` |The SPI mode to use |
|
||
|
|`AW20216S_SPI_DIVISOR` |`4` |The SPI divisor to use |
|
||
|
|`AW20216S_SCALING_MAX` |`150` |The scaling value |
|
||
|
|`AW20216S_GLOBAL_CURRENT_MAX`|`150` |The global current control value |
|
||
|
|
||
|
### Global Current Control {#global-current-control}
|
||
|
|
||
|
This setting controls the current sunk by the `CSx` pins, from 0 to 255. To adjust it, add the following to your `config.h`:
|
||
|
|
||
|
```c
|
||
|
#define AW20216S_GLOBAL_CURRENT_MAX 150
|
||
|
```
|
||
|
|
||
|
## ARM/ChibiOS Configuration {#arm-configuration}
|
||
|
|
||
|
Depending on the ChibiOS board configuration, you may need to [enable and configure SPI](spi#arm-configuration) at the keyboard level.
|
||
|
|
||
|
## LED Mapping {#led-mapping}
|
||
|
|
||
|
In order to use this driver, each output must be mapped to an LED index, by adding the following to your `<keyboardname>.c`:
|
||
|
|
||
|
```c
|
||
|
const aw20216s_led_t PROGMEM g_aw20216s_leds[AW20216S_LED_COUNT] = {
|
||
|
/* Driver
|
||
|
* | R G B */
|
||
|
{0, SW1_CS1, SW1_CS2, SW1_CS3},
|
||
|
// etc...
|
||
|
};
|
||
|
```
|
||
|
|
||
|
In this example, the first LED index on driver 0 has its red channel on `SW1_CS1`, green on `SW1_CS2` and blue on `SW1_CS3`.
|
||
|
|
||
|
These values correspond to the matrix locations as shown in the datasheet on page 16, figure 16.
|
||
|
|
||
|
## API {#api}
|
||
|
|
||
|
### `struct aw20216s_led_t` {#api-aw20216s-led-t}
|
||
|
|
||
|
Contains the PWM register addresses for a single RGB LED.
|
||
|
|
||
|
#### Members {#api-aw20216s-led-t-members}
|
||
|
|
||
|
- `uint8_t driver`
|
||
|
The driver index of the LED, from 0 to 3.
|
||
|
- `uint8_t r`
|
||
|
The output PWM register address for the LED's red channel.
|
||
|
- `uint8_t g`
|
||
|
The output PWM register address for the LED's green channel.
|
||
|
- `uint8_t b`
|
||
|
The output PWM register address for the LED's blue channel.
|
||
|
|
||
|
---
|
||
|
|
||
|
### `void aw20216s_init(pin_t cs_pin)` {#api-aw20216s-init}
|
||
|
|
||
|
Initialize the LED driver. This function should be called first.
|
||
|
|
||
|
#### Arguments {#api-aw20216s-init-arguments}
|
||
|
|
||
|
- `pin_t cs_pin`
|
||
|
The GPIO connected to the Chip Select pin of the LED driver to initialize.
|
||
|
|
||
|
---
|
||
|
|
||
|
### `void aw20216s_set_color(int index, uint8_t red, uint8_t green, uint8_t blue)` {#api-aw20216s-set-color}
|
||
|
|
||
|
Set the color of a single LED. This function does not immediately update the LEDs; call `aw20216s_update_pwm_buffers()` after you are finished.
|
||
|
|
||
|
#### Arguments {#api-aw20216s-set-color-arguments}
|
||
|
|
||
|
- `int index`
|
||
|
The LED index (ie. the index into the `g_aw20216s_leds` array).
|
||
|
- `uint8_t red`
|
||
|
The red value to set.
|
||
|
- `uint8_t green`
|
||
|
The green value to set.
|
||
|
- `uint8_t blue`
|
||
|
The blue value to set.
|
||
|
|
||
|
---
|
||
|
|
||
|
### `void aw20216s_set_color_all(uint8_t red, uint8_t green, uint8_t blue)` {#api-aw20216s-set-color-all}
|
||
|
|
||
|
Set the color of all LEDs.
|
||
|
|
||
|
#### Arguments {#api-aw20216s-set-color-all-arguments}
|
||
|
|
||
|
- `uint8_t red`
|
||
|
The red value to set.
|
||
|
- `uint8_t green`
|
||
|
The green value to set.
|
||
|
- `uint8_t blue`
|
||
|
The blue value to set.
|
||
|
|
||
|
---
|
||
|
|
||
|
### `void aw20216s_update_pwm_buffers(pin_t cs_pin, uint8_t index)` {#api-aw20216s-update-pwm-buffers}
|
||
|
|
||
|
Flush the PWM values to the LED driver.
|
||
|
|
||
|
#### Arguments {#api-aw20216s-update-pwm-buffers-arguments}
|
||
|
|
||
|
- `pin_t cs_pin`
|
||
|
The GPIO connected to the Chip Select pin of the driver.
|
||
|
- `uint8_t index`
|
||
|
The index of the driver.
|