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quantum: led: split out led_update_ports() for customization of led behaviour (#14452)

master
Thomas Weißschuh 2022-10-06 12:24:41 +02:00 committed by GitHub
parent c255174cf3
commit cbe1c22d46
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3 changed files with 34 additions and 22 deletions
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7
docs/feature_led_indicators.md
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@ -101,6 +101,13 @@ The `host_keyboard_led_state()` function will report the LED state returned from
bool caps = host_keyboard_led_state().caps_lock;
```
## `led_update_ports()`
This function writes the LED state to the actual hardware. Call it manually
from your `led_update_*()` callbacks to modify the handling of the standard
keyboard LEDs.
For example when repurposing a standard LED indicator as layer indicator.
## Setting Physical LED State
Some keyboard implementations provide convenient methods for setting the state of the physical LEDs.

12
quantum/led.c
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@ -92,7 +92,14 @@ __attribute__((weak)) bool led_update_user(led_t led_state) {
__attribute__((weak)) bool led_update_kb(led_t led_state) {
bool res = led_update_user(led_state);
if (res) {
#if defined(LED_NUM_LOCK_PIN) || defined(LED_CAPS_LOCK_PIN) || defined(LED_SCROLL_LOCK_PIN) || defined(LED_COMPOSE_PIN) || defined(LED_KANA_PIN)
led_update_ports(led_state);
}
return res;
}
/** \brief Write LED state to hardware
*/
__attribute__((weak)) void led_update_ports(led_t led_state) {
#if LED_PIN_ON_STATE == 0
// invert the whole thing to avoid having to conditionally !led_state.x later
led_state.raw = ~led_state.raw;
@ -113,9 +120,6 @@ __attribute__((weak)) bool led_update_kb(led_t led_state) {
#ifdef LED_KANA_PIN
writePin(LED_KANA_PIN, led_state.kana);
#endif
#endif
}
return res;
}
/** \brief Initialise any LED related hardware and/or state

1
quantum/led.h
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@ -60,6 +60,7 @@ void led_set_user(uint8_t usb_led);
void led_set_kb(uint8_t usb_led);
bool led_update_user(led_t led_state);
bool led_update_kb(led_t led_state);
void led_update_ports(led_t led_state);
uint32_t last_led_activity_time(void); // Timestamp of the LED activity
uint32_t last_led_activity_elapsed(void); // Number of milliseconds since the last LED activity