unleashed-firmware/.ci_files/rgb.patch

diff --git a/applications/services/notification/notification_app.c b/applications/services/notification/notification_app.c
index 5769ced..c5d3088 100644
--- a/applications/services/notification/notification_app.c
+++ b/applications/services/notification/notification_app.c
@@ -9,6 +9,7 @@
 #include "notification.h"
 #include "notification_messages.h"
 #include "notification_app.h"
+#include "applications/settings/notification_settings/rgb_backlight.h"
 
 #define TAG "NotificationSrv"
 
@@ -589,6 +590,7 @@ int32_t notification_srv(void* p) {
             break;
         case SaveSettingsMessage:
             notification_save_settings(app);
+            rgb_backlight_save_settings();
             break;
         }
 
diff --git a/applications/settings/notification_settings/notification_settings_app.c b/applications/settings/notification_settings/notification_settings_app.c
index 1955012..19d953d 100644
--- a/applications/settings/notification_settings/notification_settings_app.c
+++ b/applications/settings/notification_settings/notification_settings_app.c
@@ -3,6 +3,7 @@
 #include <gui/modules/variable_item_list.h>
 #include <gui/view_dispatcher.h>
 #include <lib/toolbox/value_index.h>
+#include <applications/settings/notification_settings/rgb_backlight.h>
 
 #define MAX_NOTIFICATION_SETTINGS 4
 
@@ -20,6 +21,8 @@ static const NotificationSequence sequence_note_c = {
     NULL,
 };
 
+static VariableItem* temp_item;
+
 #define CONTRAST_COUNT 11
 const char* const contrast_text[CONTRAST_COUNT] = {
     "-5",
@@ -156,6 +159,59 @@ static void vibro_changed(VariableItem* item) {
     notification_message(app->notification, &sequence_single_vibro);
 }
 
+// Set RGB backlight color
+static void color_changed(VariableItem* item) {
+    NotificationAppSettings* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    rgb_backlight_set_color(index);
+    variable_item_set_current_value_text(item, rgb_backlight_get_color_text(index));
+    notification_message(app->notification, &sequence_display_backlight_on);
+}
+
+// TODO: refactor and fix this
+static void color_set_custom_red(VariableItem* item) {
+    NotificationAppSettings* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    rgb_backlight_set_custom_color(index, 0);
+    char valtext[4] = {};
+    snprintf(valtext, sizeof(valtext), "%d", index);
+    variable_item_set_current_value_text(item, valtext);
+    rgb_backlight_set_color(13);
+    rgb_backlight_update(app->notification->settings.display_brightness * 0xFF, true);
+    // Set to custom color explicitly
+    variable_item_set_current_value_index(temp_item, 13);
+    variable_item_set_current_value_text(temp_item, rgb_backlight_get_color_text(13));
+    notification_message(app->notification, &sequence_display_backlight_on);
+}
+static void color_set_custom_green(VariableItem* item) {
+    NotificationAppSettings* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    rgb_backlight_set_custom_color(index, 1);
+    char valtext[4] = {};
+    snprintf(valtext, sizeof(valtext), "%d", index);
+    variable_item_set_current_value_text(item, valtext);
+    rgb_backlight_set_color(13);
+    rgb_backlight_update(app->notification->settings.display_brightness * 0xFF, true);
+    // Set to custom color explicitly
+    variable_item_set_current_value_index(temp_item, 13);
+    variable_item_set_current_value_text(temp_item, rgb_backlight_get_color_text(13));
+    notification_message(app->notification, &sequence_display_backlight_on);
+}
+static void color_set_custom_blue(VariableItem* item) {
+    NotificationAppSettings* app = variable_item_get_context(item);
+    uint8_t index = variable_item_get_current_value_index(item);
+    rgb_backlight_set_custom_color(index, 2);
+    char valtext[4] = {};
+    snprintf(valtext, sizeof(valtext), "%d", index);
+    variable_item_set_current_value_text(item, valtext);
+    rgb_backlight_set_color(13);
+    rgb_backlight_update(app->notification->settings.display_brightness * 0xFF, true);
+    // Set to custom color explicitly
+    variable_item_set_current_value_index(temp_item, 13);
+    variable_item_set_current_value_text(temp_item, rgb_backlight_get_color_text(13));
+    notification_message(app->notification, &sequence_display_backlight_on);
+}
+
 static uint32_t notification_app_settings_exit(void* context) {
     UNUSED(context);
     return VIEW_NONE;
@@ -180,8 +236,40 @@ static NotificationAppSettings* alloc_settings() {
     variable_item_set_current_value_index(item, value_index);
     variable_item_set_current_value_text(item, contrast_text[value_index]);
 
+    // RGB Colors
+    item = variable_item_list_add(
+        app->variable_item_list, "LCD Color", rgb_backlight_get_color_count(), color_changed, app);
+    value_index = rgb_backlight_get_settings()->display_color_index;
+    variable_item_set_current_value_index(item, value_index);
+    variable_item_set_current_value_text(item, rgb_backlight_get_color_text(value_index));
+    temp_item = item;
+
+    // Custom Color - REFACTOR THIS
+    item = variable_item_list_add(
+        app->variable_item_list, "Custom Red", 255, color_set_custom_red, app);
+    value_index = rgb_backlight_get_settings()->custom_r;
+    variable_item_set_current_value_index(item, value_index);
+    char valtext[4] = {};
+    snprintf(valtext, sizeof(valtext), "%d", value_index);
+    variable_item_set_current_value_text(item, valtext);
+
+    item = variable_item_list_add(
+        app->variable_item_list, "Custom Green", 255, color_set_custom_green, app);
+    value_index = rgb_backlight_get_settings()->custom_g;
+    variable_item_set_current_value_index(item, value_index);
+    snprintf(valtext, sizeof(valtext), "%d", value_index);
+    variable_item_set_current_value_text(item, valtext);
+
+    item = variable_item_list_add(
+        app->variable_item_list, "Custom Blue", 255, color_set_custom_blue, app);
+    value_index = rgb_backlight_get_settings()->custom_b;
+    variable_item_set_current_value_index(item, value_index);
+    snprintf(valtext, sizeof(valtext), "%d", value_index);
+    variable_item_set_current_value_text(item, valtext);
+    // End of RGB
+
     item = variable_item_list_add(
-        app->variable_item_list, "LCD Backlight", BACKLIGHT_COUNT, backlight_changed, app);
+        app->variable_item_list, "LCD Brightness", BACKLIGHT_COUNT, backlight_changed, app);
     value_index = value_index_float(
         app->notification->settings.display_brightness, backlight_value, BACKLIGHT_COUNT);
     variable_item_set_current_value_index(item, value_index);
diff --git a/applications/settings/notification_settings/rgb_backlight.c b/applications/settings/notification_settings/rgb_backlight.c
new file mode 100644
index 0000000..98f0d3a
--- /dev/null
+++ b/applications/settings/notification_settings/rgb_backlight.c
@@ -0,0 +1,217 @@
+/*
+    RGB backlight FlipperZero driver
+    Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
+
+    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 3 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 <https://www.gnu.org/licenses/>.
+*/
+
+#include "rgb_backlight.h"
+#include <furi_hal.h>
+#include <storage/storage.h>
+
+#define RGB_BACKLIGHT_SETTINGS_VERSION 6
+#define RGB_BACKLIGHT_SETTINGS_FILE_NAME ".rgb_backlight.settings"
+#define RGB_BACKLIGHT_SETTINGS_PATH INT_PATH(RGB_BACKLIGHT_SETTINGS_FILE_NAME)
+
+#define COLOR_COUNT (sizeof(colors) / sizeof(RGBBacklightColor))
+
+#define TAG "RGB Backlight"
+
+static RGBBacklightSettings rgb_settings = {
+    .version = RGB_BACKLIGHT_SETTINGS_VERSION,
+    .display_color_index = 0,
+    .custom_r = 254,
+    .custom_g = 254,
+    .custom_b = 254,
+    .settings_is_loaded = false};
+
+static const RGBBacklightColor colors[] = {
+    {"Orange", 255, 60, 0},
+    {"Yellow", 255, 144, 0},
+    {"Spring", 167, 255, 0},
+    {"Lime", 0, 255, 0},
+    {"Aqua", 0, 255, 127},
+    {"Cyan", 0, 210, 210},
+    {"Azure", 0, 127, 255},
+    {"Blue", 0, 0, 255},
+    {"Purple", 127, 0, 255},
+    {"Magenta", 210, 0, 210},
+    {"Pink", 255, 0, 127},
+    {"Red", 255, 0, 0},
+    {"White", 254, 210, 200},
+    {"Custom", 0, 0, 0},
+};
+
+uint8_t rgb_backlight_get_color_count(void) {
+    return COLOR_COUNT;
+}
+
+const char* rgb_backlight_get_color_text(uint8_t index) {
+    return colors[index].name;
+}
+
+void rgb_backlight_load_settings(void) {
+    // Do not load settings if we are in other boot modes than normal
+    if(furi_hal_rtc_get_boot_mode() != FuriHalRtcBootModeNormal) {
+        rgb_settings.settings_is_loaded = true;
+        return;
+    }
+
+    // Wait for all required services to start and create their records
+    uint8_t timeout = 0;
+    while(!furi_record_exists(RECORD_STORAGE)) {
+        timeout++;
+        if(timeout > 150) {
+            rgb_settings.settings_is_loaded = true;
+            return;
+        }
+        furi_delay_ms(5);
+    }
+
+    RGBBacklightSettings settings;
+    File* file = storage_file_alloc(furi_record_open(RECORD_STORAGE));
+    const size_t settings_size = sizeof(RGBBacklightSettings);
+
+    FURI_LOG_D(TAG, "loading settings from \"%s\"", RGB_BACKLIGHT_SETTINGS_PATH);
+    bool fs_result =
+        storage_file_open(file, RGB_BACKLIGHT_SETTINGS_PATH, FSAM_READ, FSOM_OPEN_EXISTING);
+
+    if(fs_result) {
+        uint16_t bytes_count = storage_file_read(file, &settings, settings_size);
+
+        if(bytes_count != settings_size) {
+            fs_result = false;
+        }
+    }
+
+    if(fs_result) {
+        FURI_LOG_D(TAG, "load success");
+        if(settings.version != RGB_BACKLIGHT_SETTINGS_VERSION) {
+            FURI_LOG_E(
+                TAG,
+                "version(%d != %d) mismatch",
+                settings.version,
+                RGB_BACKLIGHT_SETTINGS_VERSION);
+        } else {
+            memcpy(&rgb_settings, &settings, settings_size);
+        }
+    } else {
+        FURI_LOG_E(TAG, "load failed, %s", storage_file_get_error_desc(file));
+    }
+
+    storage_file_close(file);
+    storage_file_free(file);
+    furi_record_close(RECORD_STORAGE);
+    rgb_settings.settings_is_loaded = true;
+};
+
+void rgb_backlight_save_settings(void) {
+    RGBBacklightSettings settings;
+    File* file = storage_file_alloc(furi_record_open(RECORD_STORAGE));
+    const size_t settings_size = sizeof(RGBBacklightSettings);
+
+    FURI_LOG_D(TAG, "saving settings to \"%s\"", RGB_BACKLIGHT_SETTINGS_PATH);
+
+    memcpy(&settings, &rgb_settings, settings_size);
+
+    bool fs_result =
+        storage_file_open(file, RGB_BACKLIGHT_SETTINGS_PATH, FSAM_WRITE, FSOM_CREATE_ALWAYS);
+
+    if(fs_result) {
+        uint16_t bytes_count = storage_file_write(file, &settings, settings_size);
+
+        if(bytes_count != settings_size) {
+            fs_result = false;
+        }
+    }
+
+    if(fs_result) {
+        FURI_LOG_D(TAG, "save success");
+    } else {
+        FURI_LOG_E(TAG, "save failed, %s", storage_file_get_error_desc(file));
+    }
+
+    storage_file_close(file);
+    storage_file_free(file);
+    furi_record_close(RECORD_STORAGE);
+};
+
+RGBBacklightSettings* rgb_backlight_get_settings(void) {
+    if(!rgb_settings.settings_is_loaded) {
+        rgb_backlight_load_settings();
+    }
+    return &rgb_settings;
+}
+
+void rgb_backlight_set_color(uint8_t color_index) {
+    if(color_index > (rgb_backlight_get_color_count() - 1)) color_index = 0;
+    rgb_settings.display_color_index = color_index;
+}
+
+void rgb_backlight_set_custom_color(uint8_t color, uint8_t index) {
+    if(index > 2) return;
+    if(index == 0) {
+        rgb_settings.custom_r = color;
+    } else if(index == 1) {
+        rgb_settings.custom_g = color;
+    } else if(index == 2) {
+        rgb_settings.custom_b = color;
+    }
+}
+
+void rgb_backlight_update(uint8_t brightness, bool bypass) {
+    if(!rgb_settings.settings_is_loaded) {
+        rgb_backlight_load_settings();
+    }
+
+    if(!bypass) {
+        static uint8_t last_color_index = 255;
+        static uint8_t last_brightness = 123;
+
+        if(last_brightness == brightness && last_color_index == rgb_settings.display_color_index) {
+            return;
+        }
+
+        last_brightness = brightness;
+        last_color_index = rgb_settings.display_color_index;
+    }
+
+    for(uint8_t i = 0; i < SK6805_get_led_count(); i++) {
+        if(rgb_settings.display_color_index == 13) {
+            uint8_t r = rgb_settings.custom_r * (brightness / 255.0f);
+            uint8_t g = rgb_settings.custom_g * (brightness / 255.0f);
+            uint8_t b = rgb_settings.custom_b * (brightness / 255.0f);
+
+            SK6805_set_led_color(i, r, g, b);
+        } else {
+            if((colors[rgb_settings.display_color_index].red == 0) &&
+               (colors[rgb_settings.display_color_index].green == 0) &&
+               (colors[rgb_settings.display_color_index].blue == 0)) {
+                uint8_t r = colors[0].red * (brightness / 255.0f);
+                uint8_t g = colors[0].green * (brightness / 255.0f);
+                uint8_t b = colors[0].blue * (brightness / 255.0f);
+
+                SK6805_set_led_color(i, r, g, b);
+            } else {
+                uint8_t r = colors[rgb_settings.display_color_index].red * (brightness / 255.0f);
+                uint8_t g = colors[rgb_settings.display_color_index].green * (brightness / 255.0f);
+                uint8_t b = colors[rgb_settings.display_color_index].blue * (brightness / 255.0f);
+
+                SK6805_set_led_color(i, r, g, b);
+            }
+        }
+    }
+
+    SK6805_update();
+}
diff --git a/applications/settings/notification_settings/rgb_backlight.h b/applications/settings/notification_settings/rgb_backlight.h
new file mode 100644
index 0000000..68dacda
--- /dev/null
+++ b/applications/settings/notification_settings/rgb_backlight.h
@@ -0,0 +1,91 @@
+/*
+    RGB backlight FlipperZero driver
+    Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
+
+    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 3 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 <https://www.gnu.org/licenses/>.
+*/
+
+#include <furi.h>
+#include "SK6805.h"
+
+typedef struct {
+    char* name;
+    uint8_t red;
+    uint8_t green;
+    uint8_t blue;
+} RGBBacklightColor;
+
+typedef struct {
+    uint8_t version;
+    uint8_t display_color_index;
+    uint8_t custom_r;
+    uint8_t custom_g;
+    uint8_t custom_b;
+    bool settings_is_loaded;
+} RGBBacklightSettings;
+
+/**
+ * @brief Получить текущие настройки RGB-подсветки
+ *
+ * @return Указатель на структуру настроек
+ */
+RGBBacklightSettings* rgb_backlight_get_settings(void);
+
+/**
+ * @brief Загрузить настройки подсветки с SD-карты
+ */
+void rgb_backlight_load_settings(void);
+
+/**
+ * @brief Сохранить текущие настройки RGB-подсветки
+ */
+void rgb_backlight_save_settings(void);
+
+/**
+ * @brief Применить текущие настройки RGB-подсветки
+ *
+ * @param brightness Яркость свечения (0-255)
+ * @param bypass Применить настройки принудительно
+ */
+void rgb_backlight_update(uint8_t brightness, bool bypass);
+
+/**
+ * @brief Установить цвет RGB-подсветки
+ *
+ * @param color_index Индекс цвета (0 - rgb_backlight_get_color_count())
+ */
+void rgb_backlight_set_color(uint8_t color_index);
+
+/**
+ * @brief Set custom color values by index - 0=R 1=G 2=B
+ *
+ * @param color - color value (0-255)
+ * @param index - color index (0-2) 0=R 1=G 2=B
+ */
+void rgb_backlight_set_custom_color(uint8_t color, uint8_t index);
+
+/**
+ * @brief Получить количество доступных цветов
+ *
+ * @return Число доступных вариантов цвета
+ */
+uint8_t rgb_backlight_get_color_count(void);
+
+/**
+ * @brief Получить текстовое название цвета
+ *
+ * @param index Индекс из доступных вариантов цвета
+ * @return Указатель на строку с названием цвета
+ */
+const char* rgb_backlight_get_color_text(uint8_t index);
\ No newline at end of file
diff --git a/firmware/targets/f7/furi_hal/furi_hal_light.c b/firmware/targets/f7/furi_hal/furi_hal_light.c
index 83e1603..45798ca 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_light.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_light.c
@@ -3,6 +3,7 @@
 #include <furi_hal_light.h>
 #include <lp5562.h>
 #include <stdint.h>
+#include <applications/settings/notification_settings/rgb_backlight.h>
 
 #define LED_CURRENT_RED 50
 #define LED_CURRENT_GREEN 50
@@ -31,22 +32,21 @@ void furi_hal_light_init() {
 }
 
 void furi_hal_light_set(Light light, uint8_t value) {
-    furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
-    if(light & LightRed) {
-        lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelRed, value);
-    }
-    if(light & LightGreen) {
-        lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelGreen, value);
-    }
-    if(light & LightBlue) {
-        lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelBlue, value);
-    }
     if(light & LightBacklight) {
-        uint8_t prev = lp5562_get_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelWhite);
-        lp5562_execute_ramp(
-            &furi_hal_i2c_handle_power, LP5562Engine1, LP5562ChannelWhite, prev, value, 100);
+        rgb_backlight_update(value, false);
+    } else {
+        furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
+        if(light & LightRed) {
+            lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelRed, value);
+        }
+        if(light & LightGreen) {
+            lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelGreen, value);
+        }
+        if(light & LightBlue) {
+            lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelBlue, value);
+        }
+        furi_hal_i2c_release(&furi_hal_i2c_handle_power);
     }
-    furi_hal_i2c_release(&furi_hal_i2c_handle_power);
 }
 
 void furi_hal_light_blink_start(Light light, uint8_t brightness, uint16_t on_time, uint16_t period) {
diff --git a/lib/drivers/SK6805.c b/lib/drivers/SK6805.c
new file mode 100644
index 0000000..572e1df
--- /dev/null
+++ b/lib/drivers/SK6805.c
@@ -0,0 +1,101 @@
+/*
+    SK6805 FlipperZero driver
+    Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
+
+    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 3 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 <https://www.gnu.org/licenses/>.
+*/
+
+#include "SK6805.h"
+#include <furi_hal.h>
+
+/* Настройки */
+#define SK6805_LED_COUNT 3 //Количество светодиодов на плате подсветки
+#define SK6805_LED_PIN &led_pin //Порт подключения светодиодов
+
+#ifdef FURI_DEBUG
+#define DEBUG_PIN &gpio_ext_pa7
+#define DEBUG_INIT() \
+    furi_hal_gpio_init(DEBUG_PIN, GpioModeOutputPushPull, GpioPullNo, GpioSpeedVeryHigh)
+#define DEBUG_SET_HIGH() furi_hal_gpio_write(DEBUG_PIN, true)
+#define DEBUG_SET_LOW() furi_hal_gpio_write(DEBUG_PIN, false)
+#else
+#define DEBUG_INIT()
+#define DEBUG_SET_HIGH()
+#define DEBUG_SET_LOW()
+#endif
+
+static const GpioPin led_pin = {.port = GPIOA, .pin = LL_GPIO_PIN_8};
+static uint8_t led_buffer[SK6805_LED_COUNT][3];
+
+void SK6805_init(void) {
+    DEBUG_INIT();
+    furi_hal_gpio_write(SK6805_LED_PIN, false);
+    furi_hal_gpio_init(SK6805_LED_PIN, GpioModeOutputPushPull, GpioPullNo, GpioSpeedVeryHigh);
+}
+
+uint8_t SK6805_get_led_count(void) {
+    return (const uint8_t)SK6805_LED_COUNT;
+}
+void SK6805_set_led_color(uint8_t led_index, uint8_t r, uint8_t g, uint8_t b) {
+    furi_check(led_index < SK6805_LED_COUNT);
+
+    led_buffer[led_index][0] = g;
+    led_buffer[led_index][1] = r;
+    led_buffer[led_index][2] = b;
+}
+
+void SK6805_update(void) {
+    SK6805_init();
+    furi_kernel_lock();
+    uint32_t end;
+    /* Последовательная отправка цветов светодиодов */
+    for(uint8_t lednumber = 0; lednumber < SK6805_LED_COUNT; lednumber++) {
+        //Последовательная отправка цветов светодиода
+        for(uint8_t color = 0; color < 3; color++) {
+            //Последовательная отправка битов цвета
+            uint8_t i = 0b10000000;
+            while(i != 0) {
+                if(led_buffer[lednumber][color] & (i)) {
+                    furi_hal_gpio_write(SK6805_LED_PIN, true);
+                    DEBUG_SET_HIGH();
+                    end = DWT->CYCCNT + 30;
+                    //T1H 600 us (615 us)
+                    while(DWT->CYCCNT < end) {
+                    }
+                    furi_hal_gpio_write(SK6805_LED_PIN, false);
+                    DEBUG_SET_LOW();
+                    end = DWT->CYCCNT + 26;
+                    //T1L  600 us (587 us)
+                    while(DWT->CYCCNT < end) {
+                    }
+                } else {
+                    furi_hal_gpio_write(SK6805_LED_PIN, true);
+                    DEBUG_SET_HIGH();
+                    end = DWT->CYCCNT + 11;
+                    //T0H 300 ns (312 ns)
+                    while(DWT->CYCCNT < end) {
+                    }
+                    furi_hal_gpio_write(SK6805_LED_PIN, false);
+                    DEBUG_SET_LOW();
+                    end = DWT->CYCCNT + 43;
+                    //T0L 900 ns (890 ns)
+                    while(DWT->CYCCNT < end) {
+                    }
+                }
+                i >>= 1;
+            }
+        }
+    }
+    furi_kernel_unlock();
+}
diff --git a/lib/drivers/SK6805.h b/lib/drivers/SK6805.h
new file mode 100644
index 0000000..7c58956
--- /dev/null
+++ b/lib/drivers/SK6805.h
@@ -0,0 +1,51 @@
+/*
+    SK6805 FlipperZero driver
+    Copyright (C) 2022-2023 Victor Nikitchuk (https://github.com/quen0n)
+
+    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 3 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 <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef SK6805_H_
+#define SK6805_H_
+
+#include <furi.h>
+
+/**
+ * @brief Инициализация линии управления подсветкой
+ */
+void SK6805_init(void);
+
+/**
+ * @brief Получить количество светодиодов в подсветке
+ *
+ * @return Количество светодиодов
+ */
+uint8_t SK6805_get_led_count(void);
+
+/**
+ * @brief Установить цвет свечения светодиода
+ *
+ * @param led_index номер светодиода (от 0 до SK6805_get_led_count())
+ * @param r значение красного (0-255)
+ * @param g значение зелёного (0-255)
+ * @param b значение синего (0-255)
+ */
+void SK6805_set_led_color(uint8_t led_index, uint8_t r, uint8_t g, uint8_t b);
+
+/**
+ * @brief Обновление состояния подсветки дисплея
+ */
+void SK6805_update(void);
+
+#endif /* SK6805_H_ */
\ No newline at end of file