backlight breathing overhaul (#2187)

* add breathing to bananasplit

* backlight breathing overhaul

* fix the backlight_tick thing.

* fix for vision_division backlight

* fix a few keymaps and probably break breathing for some weirdly set-up boards.

* remove BL_x keycodes because they made unreasonable assumptions

* some fixes for BL keycodes

* integer cie lightness scaling

* use cie lightness for non-breathing backlight and make breathing able to reach true max brightness

keyboards/bananasplit/config.h

@@ -42,7 +42,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define MATRIX_HAS_GHOST
 
 /* number of backlight levels */
-#define BACKLIGHT_LEVELS  1
+#define BACKLIGHT_LEVELS 3
 
 /* mapping backlight LEDs to correct Pin */
 #define BACKLIGHT_PIN B7

keyboards/bananasplit/keymaps/coloneljesus/config.h

@@ -21,5 +21,7 @@
 
 // place overrides here
 #define GRAVE_ESC_CTRL_OVERRIDE
+#define BACKLIGHT_BREATHING
+#define BREATHING_PERIOD 8
 
 #endif

keyboards/bananasplit/keymaps/coloneljesus/keymap.c

@@ -16,7 +16,7 @@
 #include "bananasplit.h"
 
 enum custom_keycodes {
-  WIN_SWITCH_LAYOUT = SAFE_RANGE
+  WIN_SWITCH_LAYOUT = SAFE_RANGE,
 };
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
@@ -57,7 +57,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,  KC_F6,   KC_F7,         KC_F8,         KC_F9,   KC_F10,  KC_F11,  KC_F12,  _______, \
     KC_CAPS, KC_MPRV, KC_VOLU, KC_MNXT, KC_PGUP, KC_INS, KC_HOME, LCTL(KC_LEFT), LCTL(KC_RGHT), KC_END,  _______, _______, _______, KC_PSCR, \
     _______, KC_MUTE, KC_VOLD, KC_MPLY, KC_PGDN, KC_DEL, KC_LEFT, KC_DOWN,       KC_UP,         KC_RGHT, _______, _______, _______, \
-    _______,          _______, _______, _______, _______,_______, LCTL(KC_BSPC), LCTL(KC_DEL),  _______, _______, _______, _______, _______, \
+    _______,          BL_STEP, BL_BRTG, _______, _______,_______, LCTL(KC_BSPC), LCTL(KC_DEL),  _______, _______, _______, _______, _______, \
     _______, _______, _______,          _______, _______,_______,                _______,       _______, _______, _______, RESET \
 ),
 };
@@ -76,19 +76,19 @@ void matrix_scan_user(void) {
 
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   switch (keycode) {
+
     case WIN_SWITCH_LAYOUT: {
       // Sends Alt+Shift on both key down and key up. 
       // Designed to switch between two keyboard layouts on Windows using a locking switch.
       // Does nothing if right shift is pressed for easy resync.
-      if (!(get_mods() & MOD_BIT(KC_RSFT))) {
+      if (!(get_mods() & MOD_BIT(KC_RSFT)))
         SEND_STRING(SS_DOWN(X_LALT)SS_TAP(X_LSHIFT)SS_UP(X_LALT));
-        return false;
-      }
-      else
-        return false;
+      return false;
     }
+
+    default:
+      return true;
   }
-  return true;
 }
 
 void led_set_user(uint8_t usb_led) {