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impl. night brightness control #22

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3e2e5b3
impl. night brightness control
ariedel87 Sep 6, 2025
77053f1
Implement automatic nightmode based on sunrise/sunset times
ariedel87 Sep 7, 2025
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22 changes: 15 additions & 7 deletions aura/translations.h
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ struct LocalizedStrings {
const char* language_label;
const char* weekdays[7];
const char* use_night_mode;
const char* night_mode_brightness;
};

#define DEFAULT_CAPTIVE_SSID "Aura"
Expand Down Expand Up @@ -65,7 +66,8 @@ static const LocalizedStrings strings_en = {
"reconfigure Wi-Fi credentials.",
"Language:",
{"Sun", "Mon", "Tues", "Wed", "Thurs", "Fri", "Sat"},
"Dim screen at night"
"Dim screen at night",
"Night brightness:"
};

static const LocalizedStrings strings_es = {
Expand Down Expand Up @@ -96,7 +98,8 @@ static const LocalizedStrings strings_es = {
"credenciales Wi-Fi.",
"Idioma:",
{"Dom", "Lun", "Mar", "Mié", "Jue", "Vie", "Sáb"},
"Pantalla noche"
"Pantalla noche",
"Brillo nocturno:"
};

static const LocalizedStrings strings_de = {
Expand Down Expand Up @@ -129,7 +132,8 @@ static const LocalizedStrings strings_de = {
"neu zu konfigurieren.",
"Sprache:",
{"So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"},
"Nacht-Dimmen"
"Nacht-Dimmen",
"Nacht-Helligkeit:"
};

static const LocalizedStrings strings_fr = {
Expand Down Expand Up @@ -162,7 +166,8 @@ static const LocalizedStrings strings_fr = {
"les identifiants Wi-Fi.",
"Langue:",
{"Dim", "Lun", "Mar", "Mer", "Jeu", "Ven", "Sam"},
"Nuit écran"
"Nuit écran",
"Luminosité nuit:"
};

static const LocalizedStrings strings_tr = {
Expand Down Expand Up @@ -192,7 +197,8 @@ static const LocalizedStrings strings_tr = {
"gerekecek.",
"Dil:",
{"Paz", "Pzt", "Sal", "Çar", "Per", "Cum", "Cmt"},
"Gece kısık"
"Gece kısık",
"Gece parlaklığı:"
};

static const LocalizedStrings strings_sv = {
Expand Down Expand Up @@ -226,7 +232,8 @@ static const LocalizedStrings strings_sv = {
"autentiseringsuppgifter.",
"Sprak:",
{"Sön", "Man", "Tis", "Ons", "Tor", "Fre", "Lör"},
"Nattdämpning"
"Nattdämpning",
"Nattljusstyrka:"
};

static const LocalizedStrings strings_it = {
Expand Down Expand Up @@ -255,7 +262,8 @@ static const LocalizedStrings strings_it = {
"riconfigurare le credenziali Wi-Fi.",
"Lingua:",
{"Dom", "Lun", "Mar", "Mer", "Gio", "Ven", "Sab"},
"Schermo notte"
"Schermo notte",
"Luminosità notte:"
};

static const LocalizedStrings* get_strings(Language current_language) {
Expand Down
132 changes: 111 additions & 21 deletions aura/weather.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -26,9 +26,10 @@
#define DEFAULT_CAPTIVE_SSID "Aura"
#define UPDATE_INTERVAL 600000UL // 10 minutes

// Night mode starts at 10pm and ends at 6am
#define NIGHT_MODE_START_HOUR 22
#define NIGHT_MODE_END_HOUR 6
// Night mode variables for sunrise/sunset
static String sunrise_time = "";
static String sunset_time = "";
static bool sunrise_sunset_available = false;

LV_FONT_DECLARE(lv_font_montserrat_latin_12);
LV_FONT_DECLARE(lv_font_montserrat_latin_14);
Expand Down Expand Up @@ -69,6 +70,7 @@ static Preferences prefs;
static bool use_fahrenheit = false;
static bool use_24_hour = false;
static bool use_night_mode = false;
static uint32_t night_mode_brightness = 16;
static char latitude[16] = LATITUDE_DEFAULT;
static char longitude[16] = LONGITUDE_DEFAULT;
static String location = String(LOCATION_DEFAULT);
Expand Down Expand Up @@ -107,6 +109,8 @@ static lv_obj_t *location_win = nullptr;
static lv_obj_t *unit_switch;
static lv_obj_t *clock_24hr_switch;
static lv_obj_t *night_mode_switch;
static lv_obj_t *lbl_night_brightness = nullptr;
static lv_obj_t *night_brightness_slider = nullptr;
static lv_obj_t *language_dropdown;
static lv_obj_t *lbl_clock;

Expand Down Expand Up @@ -180,6 +184,8 @@ void activate_night_mode();
void deactivate_night_mode();
void check_for_night_mode();
void handle_temp_screen_wakeup_timeout(lv_timer_t *timer);
int time_to_minutes(const String &time_str);
bool is_night_time();


int day_of_week(int y, int m, int d) {
Expand Down Expand Up @@ -340,6 +346,7 @@ void setup() {
use_fahrenheit = prefs.getBool("useFahrenheit", false);
location = prefs.getString("location", LOCATION_DEFAULT);
use_night_mode = prefs.getBool("useNightMode", false);
night_mode_brightness = prefs.getUInt("nightModeBrightness", 16);
uint32_t brightness = prefs.getUInt("brightness", 255);
use_24_hour = prefs.getBool("use24Hour", false);
current_language = (Language)prefs.getUInt("language", LANG_EN);
Expand Down Expand Up @@ -726,33 +733,33 @@ void create_location_dialog() {
void create_settings_window() {
if (settings_win) return;

int vertical_element_spacing = 21;
int vertical_element_spacing = 18;

const LocalizedStrings* strings = get_strings(current_language);
settings_win = lv_win_create(lv_scr_act());

lv_obj_t *header = lv_win_get_header(settings_win);
lv_obj_set_style_height(header, 30, 0);
lv_obj_set_style_height(header, 28, 0);

lv_obj_t *title = lv_win_add_title(settings_win, strings->aura_settings);
lv_obj_set_style_text_font(title, get_font_16(), 0);
lv_obj_set_style_margin_left(title, 10, 0);

lv_obj_center(settings_win);
lv_obj_set_width(settings_win, 240);
lv_obj_set_size(settings_win, 240, 320);

lv_obj_t *cont = lv_win_get_content(settings_win);

// Brightness
lv_obj_t *lbl_b = lv_label_create(cont);
lv_label_set_text(lbl_b, strings->brightness);
lv_obj_set_style_text_font(lbl_b, get_font_12(), LV_PART_MAIN | LV_STATE_DEFAULT);
lv_obj_align(lbl_b, LV_ALIGN_TOP_LEFT, 0, 5);
lv_obj_align(lbl_b, LV_ALIGN_TOP_LEFT, 0, 2);
lv_obj_t *slider = lv_slider_create(cont);
lv_slider_set_range(slider, 1, 255);
uint32_t saved_b = prefs.getUInt("brightness", 128);
lv_slider_set_value(slider, saved_b, LV_ANIM_OFF);
lv_obj_set_width(slider, 100);
lv_obj_set_width(slider, 90);
lv_obj_align_to(slider, lbl_b, LV_ALIGN_OUT_RIGHT_MID, 10, 0);

lv_obj_add_event_cb(slider, [](lv_event_t *e){
Expand All @@ -777,11 +784,36 @@ void create_settings_window() {
}
lv_obj_add_event_cb(night_mode_switch, settings_event_handler, LV_EVENT_VALUE_CHANGED, NULL);

// Night mode brightness slider (only visible when night mode is enabled)
lbl_night_brightness = lv_label_create(cont);
lv_label_set_text(lbl_night_brightness, strings->night_mode_brightness);
lv_obj_set_style_text_font(lbl_night_brightness, get_font_12(), LV_PART_MAIN | LV_STATE_DEFAULT);
lv_obj_align_to(lbl_night_brightness, lbl_night_mode, LV_ALIGN_OUT_BOTTOM_LEFT, 0, vertical_element_spacing);

night_brightness_slider = lv_slider_create(cont);
lv_slider_set_range(night_brightness_slider, 0, 45);
lv_slider_set_value(night_brightness_slider, night_mode_brightness, LV_ANIM_OFF);
lv_obj_set_width(night_brightness_slider, 90);
lv_obj_align_to(night_brightness_slider, lbl_night_brightness, LV_ALIGN_OUT_RIGHT_MID, 10, 0);

// Hide night brightness controls if night mode is disabled
if (!use_night_mode) {
lv_obj_add_flag(lbl_night_brightness, LV_OBJ_FLAG_HIDDEN);
lv_obj_add_flag(night_brightness_slider, LV_OBJ_FLAG_HIDDEN);
}

lv_obj_add_event_cb(night_brightness_slider, [](lv_event_t *e){
lv_obj_t *s = (lv_obj_t*)lv_event_get_target(e);
uint32_t v = lv_slider_get_value(s);
night_mode_brightness = v;
prefs.putUInt("nightModeBrightness", night_mode_brightness);
}, LV_EVENT_VALUE_CHANGED, NULL);

// 'Use F' switch
lv_obj_t *lbl_u = lv_label_create(cont);
lv_label_set_text(lbl_u, strings->use_fahrenheit);
lv_obj_set_style_text_font(lbl_u, get_font_12(), LV_PART_MAIN | LV_STATE_DEFAULT);
lv_obj_align_to(lbl_u, lbl_night_mode, LV_ALIGN_OUT_BOTTOM_LEFT, 0, vertical_element_spacing);
lv_obj_align_to(lbl_u, lbl_night_brightness, LV_ALIGN_OUT_BOTTOM_LEFT, 0, vertical_element_spacing);

unit_switch = lv_switch_create(cont);
lv_obj_align_to(unit_switch, lbl_u, LV_ALIGN_OUT_RIGHT_MID, 6, 0);
Expand Down Expand Up @@ -827,7 +859,7 @@ void create_settings_window() {
language_dropdown = lv_dropdown_create(cont);
lv_dropdown_set_options(language_dropdown, "English\nEspañol\nDeutsch\nFrançais\nTürkçe\nSvenska\nItaliano");
lv_dropdown_set_selected(language_dropdown, current_language);
lv_obj_set_width(language_dropdown, 120);
lv_obj_set_width(language_dropdown, 110);
lv_obj_set_style_text_font(language_dropdown, get_font_12(), LV_PART_MAIN | LV_STATE_DEFAULT);
lv_obj_set_style_text_font(language_dropdown, get_font_12(), LV_PART_SELECTED | LV_STATE_DEFAULT);
lv_obj_t *list = lv_dropdown_get_list(language_dropdown);
Expand All @@ -839,7 +871,7 @@ void create_settings_window() {
lv_obj_t *btn_change_loc = lv_btn_create(cont);
lv_obj_align_to(btn_change_loc, lbl_lang, LV_ALIGN_OUT_BOTTOM_LEFT, 0, vertical_element_spacing);

lv_obj_set_size(btn_change_loc, 100, 40);
lv_obj_set_size(btn_change_loc, 90, 35);
lv_obj_add_event_cb(btn_change_loc, change_location_event_cb, LV_EVENT_CLICKED, NULL);
lv_obj_t *lbl_chg = lv_label_create(btn_change_loc);
lv_label_set_text(lbl_chg, strings->location_btn);
Expand All @@ -860,8 +892,8 @@ void create_settings_window() {
lv_obj_set_style_bg_color(btn_reset, lv_palette_main(LV_PALETTE_RED), LV_PART_MAIN | LV_STATE_DEFAULT);
lv_obj_set_style_bg_color(btn_reset, lv_palette_darken(LV_PALETTE_RED, 1), LV_PART_MAIN | LV_STATE_PRESSED);
lv_obj_set_style_text_color(btn_reset, lv_color_white(), LV_PART_MAIN | LV_STATE_DEFAULT);
lv_obj_set_size(btn_reset, 100, 40);
lv_obj_align_to(btn_reset, btn_change_loc, LV_ALIGN_OUT_RIGHT_MID, 12, 0);
lv_obj_set_size(btn_reset, 90, 35);
lv_obj_align_to(btn_reset, btn_change_loc, LV_ALIGN_OUT_RIGHT_MID, 10, 0);

lv_obj_add_event_cb(btn_reset, reset_wifi_event_handler, LV_EVENT_CLICKED, nullptr);

Expand All @@ -872,7 +904,7 @@ void create_settings_window() {

// Close Settings button
btn_close_obj = lv_btn_create(cont);
lv_obj_set_size(btn_close_obj, 80, 40);
lv_obj_set_size(btn_close_obj, 75, 35);
lv_obj_align(btn_close_obj, LV_ALIGN_BOTTOM_RIGHT, 0, 0);
lv_obj_add_event_cb(btn_close_obj, settings_event_handler, LV_EVENT_CLICKED, NULL);

Expand All @@ -897,6 +929,15 @@ static void settings_event_handler(lv_event_t *e) {

if (tgt == night_mode_switch && code == LV_EVENT_VALUE_CHANGED) {
use_night_mode = lv_obj_has_state(night_mode_switch, LV_STATE_CHECKED);

// Show/hide night mode brightness controls
if (use_night_mode) {
lv_obj_clear_flag(lbl_night_brightness, LV_OBJ_FLAG_HIDDEN);
lv_obj_clear_flag(night_brightness_slider, LV_OBJ_FLAG_HIDDEN);
} else {
lv_obj_add_flag(lbl_night_brightness, LV_OBJ_FLAG_HIDDEN);
lv_obj_add_flag(night_brightness_slider, LV_OBJ_FLAG_HIDDEN);
}
}

if (tgt == language_dropdown && code == LV_EVENT_VALUE_CHANGED) {
Expand All @@ -909,6 +950,7 @@ static void settings_event_handler(lv_event_t *e) {
prefs.putBool("useFahrenheit", use_fahrenheit);
prefs.putBool("use24Hour", use_24_hour);
prefs.putBool("useNightMode", use_night_mode);
prefs.putUInt("nightModeBrightness", night_mode_brightness);
prefs.putUInt("language", current_language);

lv_keyboard_set_textarea(kb, nullptr);
Expand All @@ -925,6 +967,7 @@ static void settings_event_handler(lv_event_t *e) {
prefs.putBool("useFahrenheit", use_fahrenheit);
prefs.putBool("use24Hour", use_24_hour);
prefs.putBool("useNightMode", use_night_mode);
prefs.putUInt("nightModeBrightness", night_mode_brightness);
prefs.putUInt("language", current_language);

lv_keyboard_set_textarea(kb, nullptr);
Expand All @@ -937,19 +980,50 @@ static void settings_event_handler(lv_event_t *e) {
}
}

// Screen dimming functions implementation
bool night_mode_should_be_active() {
// Helper function to convert time string (HH:MM) to minutes since midnight
int time_to_minutes(const String &time_str) {
if (time_str.length() < 5) return -1;

int hour = time_str.substring(0, 2).toInt();
int minute = time_str.substring(3, 5).toInt();

return hour * 60 + minute;
}

// Check if it's night time based on sunrise/sunset
bool is_night_time() {
if (!sunrise_sunset_available) {
// Fallback to hours if sunrise/sunset data unavailable
struct tm timeinfo;
if (!getLocalTime(&timeinfo)) return false;
int hour = timeinfo.tm_hour;
return (hour >= 20 || hour < 6); // 8pm to 6am fallback
}

struct tm timeinfo;
if (!getLocalTime(&timeinfo)) return false;

int current_minutes = timeinfo.tm_hour * 60 + timeinfo.tm_min;
int sunrise_minutes = time_to_minutes(sunrise_time);
int sunset_minutes = time_to_minutes(sunset_time);

if (sunrise_minutes == -1 || sunset_minutes == -1) {
// Fallback if time parsing failed
int hour = timeinfo.tm_hour;
return (hour >= 20 || hour < 6);
}

// Night time is after sunset or before sunrise
return (current_minutes >= sunset_minutes || current_minutes < sunrise_minutes);
}

bool night_mode_should_be_active() {
if (!use_night_mode) return false;

int hour = timeinfo.tm_hour;
return (hour >= NIGHT_MODE_START_HOUR || hour < NIGHT_MODE_END_HOUR);
return is_night_time();
}

void activate_night_mode() {
analogWrite(LCD_BACKLIGHT_PIN, 0);
analogWrite(LCD_BACKLIGHT_PIN, night_mode_brightness);
night_mode_active = true;
}

Expand Down Expand Up @@ -1022,7 +1096,7 @@ void fetch_and_update_weather() {
String url = String("http://api.open-meteo.com/v1/forecast?latitude=")
+ latitude + "&longitude=" + longitude
+ "&current=temperature_2m,apparent_temperature,is_day,weather_code"
+ "&daily=temperature_2m_min,temperature_2m_max,weather_code"
+ "&daily=temperature_2m_min,temperature_2m_max,weather_code,sunrise,sunset"
+ "&hourly=temperature_2m,precipitation_probability,is_day,weather_code"
+ "&forecast_hours=7"
+ "&timezone=auto";
Expand Down Expand Up @@ -1062,6 +1136,22 @@ void fetch_and_update_weather() {
JsonArray tmin = doc["daily"]["temperature_2m_min"].as<JsonArray>();
JsonArray tmax = doc["daily"]["temperature_2m_max"].as<JsonArray>();
JsonArray weather_codes = doc["daily"]["weather_code"].as<JsonArray>();
JsonArray sunrise_times = doc["daily"]["sunrise"].as<JsonArray>();
JsonArray sunset_times = doc["daily"]["sunset"].as<JsonArray>();

// Extract today's sunrise and sunset times
if (sunrise_times.size() > 0 && sunset_times.size() > 0) {
String sunrise_full = sunrise_times[0].as<String>();
String sunset_full = sunset_times[0].as<String>();

int t_index = sunrise_full.indexOf('T');
if (t_index != -1) {
sunrise_time = sunrise_full.substring(t_index + 1, t_index + 6);
sunset_time = sunset_full.substring(t_index + 1, t_index + 6);
sunrise_sunset_available = true;
Serial.println("Sunrise: " + sunrise_time + ", Sunset: " + sunset_time);
}
}

for (int i = 0; i < 7; i++) {
const char *date = times[i];
Expand Down