opensteno_qmk/quantum/led.c

137 lines
4.3 KiB
C

/* Copyright 2020 zvecr<git@zvecr.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "quantum.h"
#ifdef BACKLIGHT_ENABLE
# include "backlight.h"
extern backlight_config_t backlight_config;
#else
// Cannot use BACKLIGHT_CAPS_LOCK without backlight being enabled
# undef BACKLIGHT_CAPS_LOCK
#endif
#ifndef LED_PIN_ON_STATE
# define LED_PIN_ON_STATE 1
#endif
#if defined(BACKLIGHT_CAPS_LOCK)
/** \brief Caps Lock indicator using backlight (for keyboards without dedicated LED)
*/
static void handle_backlight_caps_lock(led_t led_state) {
// Use backlight as Caps Lock indicator
uint8_t bl_toggle_lvl = 0;
if (led_state.caps_lock && !backlight_config.enable) {
// Turning Caps Lock ON and backlight is disabled in config
// Toggling backlight to the brightest level
bl_toggle_lvl = BACKLIGHT_LEVELS;
} else if (!led_state.caps_lock && backlight_config.enable) {
// Turning Caps Lock OFF and backlight is enabled in config
// Toggling backlight and restoring config level
bl_toggle_lvl = backlight_config.level;
}
// Set level without modify backlight_config to keep ability to restore state
backlight_set(bl_toggle_lvl);
}
#endif
/** \brief Lock LED set callback - keymap/user level
*
* \deprecated Use led_update_user() instead.
*/
__attribute__((weak)) void led_set_user(uint8_t usb_led) {}
/** \brief Lock LED set callback - keyboard level
*
* \deprecated Use led_update_kb() instead.
*/
__attribute__((weak)) void led_set_kb(uint8_t usb_led) { led_set_user(usb_led); }
/** \brief Lock LED update callback - keymap/user level
*
* \return True if led_update_kb() should run its own code, false otherwise.
*/
__attribute__((weak)) bool led_update_user(led_t led_state) { return true; }
/** \brief Lock LED update callback - keyboard level
*
* \return Ignored for now.
*/
__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)
# 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;
# endif
# ifdef LED_NUM_LOCK_PIN
writePin(LED_NUM_LOCK_PIN, led_state.num_lock);
# endif
# ifdef LED_CAPS_LOCK_PIN
writePin(LED_CAPS_LOCK_PIN, led_state.caps_lock);
# endif
# ifdef LED_SCROLL_LOCK_PIN
writePin(LED_SCROLL_LOCK_PIN, led_state.scroll_lock);
# endif
# ifdef LED_COMPOSE_PIN
writePin(LED_COMPOSE_PIN, led_state.compose);
# endif
# ifdef LED_KANA_PIN
writePin(LED_KANA_PIN, led_state.kana);
# endif
#endif
}
return res;
}
/** \brief Initialise any LED related hardware and/or state
*/
__attribute__((weak)) void led_init_ports(void) {
#ifdef LED_NUM_LOCK_PIN
setPinOutput(LED_NUM_LOCK_PIN);
writePin(LED_NUM_LOCK_PIN, !LED_PIN_ON_STATE);
#endif
#ifdef LED_CAPS_LOCK_PIN
setPinOutput(LED_CAPS_LOCK_PIN);
writePin(LED_CAPS_LOCK_PIN, !LED_PIN_ON_STATE);
#endif
#ifdef LED_SCROLL_LOCK_PIN
setPinOutput(LED_SCROLL_LOCK_PIN);
writePin(LED_SCROLL_LOCK_PIN, !LED_PIN_ON_STATE);
#endif
#ifdef LED_COMPOSE_PIN
setPinOutput(LED_COMPOSE_PIN);
writePin(LED_COMPOSE_PIN, !LED_PIN_ON_STATE);
#endif
#ifdef LED_KANA_PIN
setPinOutput(LED_KANA_PIN);
writePin(LED_KANA_PIN, !LED_PIN_ON_STATE);
#endif
}
/** \brief Entrypoint for protocol to LED binding
*/
__attribute__((weak)) void led_set(uint8_t usb_led) {
#ifdef BACKLIGHT_CAPS_LOCK
handle_backlight_caps_lock((led_t)usb_led);
#endif
led_set_kb(usb_led);
led_update_kb((led_t)usb_led);
}