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-rw-r--r--keyboards/mxss/mxss_frontled.c264
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diff --git a/keyboards/mxss/mxss_frontled.c b/keyboards/mxss/mxss_frontled.c
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+/* Copyright 2020 Jumail Mundekkat / MxBlue
+ *
+ * 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/>.
+ *
+ * Extended from the work done by fcoury: https://github.com/qmk/qmk_firmware/pull/4915
+ */
+
+#include "mxss_frontled.h"
+#include "tmk_core/common/eeprom.h"
+#include "rgblight.h"
+#include "via.h"
+#include "version.h" // for QMK_BUILDDATE used in EEPROM magic
+
+// Variables for controlling front LED application
+uint8_t fled_mode; // Mode for front LEDs
+uint8_t fled_val; // Brightness for front leds (0 - 255)
+LED_TYPE fleds[2]; // Front LED rgb values for indicator mode use
+
+// Layer indicator colors
+__attribute__ ((weak))
+hs_set layer_colors[FRONTLED_COLOR_MAXCNT];
+
+// Caps lock indicator color
+__attribute__ ((weak))
+hs_set caps_color;
+
+__attribute__ ((weak))
+size_t lc_size = sizeof(layer_colors) / sizeof(hs_set);
+
+void fled_init(void) {
+ // If EEPROM config exists, load it
+ // If VIA EEPROM exists, FLED config should too
+ if (via_eeprom_is_valid()) {
+ fled_load_conf();
+ // Else, default config
+ } else {
+ // Default mode/brightness
+ fled_mode = FLED_RGB;
+ fled_val = 10 * FLED_VAL_STEP;
+
+ // Default colors
+ caps_color.hue = 0;
+ caps_color.sat = 255;
+ layer_colors[0].hue = 0;
+ layer_colors[0].sat = 0;
+ layer_colors[1].hue = 86;
+ layer_colors[1].sat = 255;
+ layer_colors[2].hue = 36;
+ layer_colors[2].sat = 255;
+ layer_colors[3].hue = 185;
+ layer_colors[3].sat = 255;
+
+ fled_update_conf(); // Store default config to EEPROM
+ }
+
+ // Set default values for leds
+ setrgb(0, 0, 0, &fleds[0]);
+ setrgb(0, 0, 0, &fleds[1]);
+
+ // Handle lighting for indicator mode
+ if (fled_mode == FLED_INDI) {
+ fled_lock_update(host_keyboard_led_state());
+ fled_layer_update(layer_state);
+ }
+}
+
+void process_record_fled(uint16_t keycode, keyrecord_t *record) {
+ // Handle custom keycodes for front LED operation
+ switch (keycode) {
+ case FLED_MOD: // Change between front LED operation modes (off, indicator, RGB)
+ if (record->event.pressed)
+ fled_mode_cycle();
+ break;
+
+ case FLED_VAI: // Increase the brightness of the front LEDs by FLED_VAL_STEP
+ if (record->event.pressed)
+ fled_val_increase();
+ break;
+
+ case FLED_VAD: // Decrease the brightness of the front LEDs by FLED_VAL_STEP
+ if (record->event.pressed)
+ fled_val_decrease();
+ break;
+
+ default:
+ break; // Process all other keycodes normally
+ }
+
+ return;
+}
+
+void fled_load_conf(void) {
+ // Load config
+ fled_config fled_conf;
+ fled_conf.raw = eeprom_read_byte(FRONTLED_CONF_ADDR);
+ fled_mode = fled_conf.mode;
+ fled_val = fled_conf.val * FLED_VAL_STEP;
+
+ // Load color data
+ uint8_t stored_cnt = eeprom_read_byte(FRONTLED_COLOR_CNT_ADDR);
+ uint16_t *color_ptr = FRONTLED_COLOR_ADDR;
+ caps_color.raw = eeprom_read_word(color_ptr); // Should always store at least 1 color
+ for (uint8_t i = 1; i < stored_cnt; i++) {
+ if (i == lc_size) // Can't load more layers than we have available
+ break;
+ layer_colors[i].raw = eeprom_read_word(&color_ptr[i]);
+ }
+ layer_colors[0].raw = 0; // hue = sat = 0 for layer 0
+}
+
+// Store current front led config in EEPROM
+void fled_update_conf(void)
+{
+ // Create storage struct and set values
+ fled_config conf;
+ conf.mode = fled_mode;
+
+ // Small hack to ensure max value is stored correctly
+ if (fled_val == 255)
+ conf.val = 256 / FLED_VAL_STEP;
+ else
+ conf.val = fled_val / FLED_VAL_STEP;
+
+ // Store config
+ eeprom_update_byte(FRONTLED_CONF_ADDR, conf.raw);
+
+ // Store color data
+ uint16_t *color_ptr = FRONTLED_COLOR_ADDR;
+ eeprom_update_word(color_ptr, caps_color.raw);
+ // Start from 1, layer 0 is not modifiable and therefore not persisted
+ uint8_t i = 1;
+ for (; i < lc_size; i++) {
+ if (i == FRONTLED_COLOR_MAXCNT) // Can't store more than the EEPROM we have available
+ break;
+ eeprom_update_word(&color_ptr[i], layer_colors[i].raw);
+ }
+ eeprom_update_byte(FRONTLED_COLOR_CNT_ADDR, i); // For safety, store the count of colors stored
+}
+
+// Custom keycode functions
+
+void fled_mode_cycle(void)
+{
+ // FLED -> FLED_RGB -> FLED_INDI
+ switch (fled_mode) {
+ case FLED_OFF:
+ fled_mode = FLED_RGB;
+ rgblight_timer_enable();
+ break;
+
+ case FLED_RGB:
+ fled_mode = FLED_INDI;
+ break;
+
+ case FLED_INDI:
+ fled_mode = FLED_OFF;
+ break;
+ }
+
+ // Update stored config
+ fled_update_conf();
+ rgblight_set();
+}
+
+void fled_val_increase(void)
+{
+ // Increase val by FLED_VAL_STEP, handling the upper edge case
+ if (fled_val + FLED_VAL_STEP > 255)
+ fled_val = 255;
+ else
+ fled_val += FLED_VAL_STEP;
+
+ // Update stored config
+ fled_update_conf();
+ rgblight_set();
+}
+
+void fled_val_decrease(void)
+{
+ // Decrease val by FLED_VAL_STEP, handling the lower edge case
+ if (fled_val - FLED_VAL_STEP > 255)
+ fled_val = 255;
+ else
+ fled_val -= FLED_VAL_STEP;
+
+ // Update stored config
+ fled_update_conf();
+ rgblight_set();
+}
+
+void fled_layer_update(layer_state_t state) {
+ // Determine and set colour of layer LED according to current layer
+ // if hue = sat = 0, leave LED off
+ uint8_t layer = get_highest_layer(state);
+
+ if (layer < lc_size && !(layer_colors[layer].hue == 0 && layer_colors[layer].sat == 0)) {
+ sethsv(layer_colors[layer].hue, layer_colors[layer].sat, fled_val, &fleds[1]);
+ } else {
+ setrgb(0, 0, 0, &fleds[1]);
+ }
+}
+
+void fled_lock_update(led_t led_state) {
+ // Set indicator LED appropriately, whether it is used or not
+ if (led_state.caps_lock) {
+ sethsv(caps_color.hue, caps_color.sat, fled_val, &fleds[0]);
+ } else {
+ setrgb(0, 0, 0, &fleds[0]);
+ }
+
+ rgblight_set();
+}
+
+void set_fled_layer_color(uint8_t layer, hs_set hs) {
+ // Update layer colors and refresh LEDs
+ layer_colors[layer] = hs;
+ fled_layer_update(layer_state);
+ fled_update_conf();
+}
+
+hs_set get_fled_layer_color(uint8_t layer) {
+ return layer_colors[layer];
+}
+
+void set_fled_caps_color(hs_set hs) {
+ // Update caplock color and refresh LEDs
+ caps_color = hs;
+ fled_lock_update(host_keyboard_led_state());
+ fled_update_conf();
+}
+
+hs_set get_fled_caps_color(void) {
+ return caps_color;
+}
+
+// Fallback eeprom functions if VIA is not enabled
+#ifndef VIA_ENABLE
+
+// Can be called in an overriding via_init_kb() to test if keyboard level code usage of
+// EEPROM is invalid and use/save defaults.
+bool via_eeprom_is_valid(void)
+{
+ char *p = QMK_BUILDDATE; // e.g. "2019-11-05-11:29:54"
+ uint8_t magic0 = ( ( p[2] & 0x0F ) << 4 ) | ( p[3] & 0x0F );
+ uint8_t magic1 = ( ( p[5] & 0x0F ) << 4 ) | ( p[6] & 0x0F );
+ uint8_t magic2 = ( ( p[8] & 0x0F ) << 4 ) | ( p[9] & 0x0F );
+
+ return (eeprom_read_byte( (void*)VIA_EEPROM_MAGIC_ADDR+0 ) == magic0 &&
+ eeprom_read_byte( (void*)VIA_EEPROM_MAGIC_ADDR+1 ) == magic1 &&
+ eeprom_read_byte( (void*)VIA_EEPROM_MAGIC_ADDR+2 ) == magic2 );
+}
+
+#endif
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