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[Docs] RGB Matrix Caps Lock and Layer indicator example (#13367) 

Co-authored-by: Ryan <fauxpark@gmail.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: filterpaper <filterpaper@localhost>
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Albert Y 2021-07-03 16:07:01 +08:00 committed by GitHub
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@ -624,6 +624,39 @@ void rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) {
}
```
### Indicator Examples :id=indicator-examples
Caps Lock indicator on alphanumeric flagged keys:
```c
void rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) {
if (host_keyboard_led_state().caps_lock) {
for (uint8_t i = led_min; i <= led_max; i++) {
if (g_led_config.flags[i] & LED_FLAG_KEYLIGHT) {
rgb_matrix_set_color(i, RGB_RED);
}
}
}
}
```
Layer indicator on all flagged keys:
```c
void rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) {
for (uint8_t i = led_min; i <= led_max; i++) {
switch(get_highest_layer(layer_state|default_layer_state)) {
case RAISE:
rgb_matrix_set_color(i, RGB_BLUE);
break;
case LOWER:
rgb_matrix_set_color(i, RGB_YELLOW);
break;
default:
break;
}
}
}
```
### Suspended state :id=suspended-state
To use the suspend feature, make sure that `#define RGB_DISABLE_WHEN_USB_SUSPENDED true` is added to the `config.h` file.