Fake brightness reimplementation

firmware/application/apps/ui_settings.cpp

@@ -324,6 +324,7 @@ SetUIView::SetUIView(NavigationView& nav) {
                   &toggle_bias_tee,
                   &toggle_clock,
                   &toggle_mute,
+                  &toggle_fake_brightness,
                   &toggle_sd_card,
                   &button_save,
                   &button_cancel});
@@ -361,6 +362,7 @@ SetUIView::SetUIView(NavigationView& nav) {
     toggle_clock.set_value(!pmem::ui_hide_clock());
     toggle_speaker.set_value(!pmem::ui_hide_speaker());
     toggle_mute.set_value(!pmem::ui_hide_mute());
+    toggle_fake_brightness.set_value(!pmem::ui_hide_fake_brightness());
     toggle_battery_icon.set_value(!pmem::ui_hide_battery_icon());
     toggle_battery_text.set_value(!pmem::ui_hide_numeric_battery());
     toggle_sd_card.set_value(!pmem::ui_hide_sd_card());
@@ -389,6 +391,7 @@ SetUIView::SetUIView(NavigationView& nav) {
         pmem::set_ui_hide_clock(!toggle_clock.value());
         pmem::set_ui_hide_speaker(!toggle_speaker.value());
         pmem::set_ui_hide_mute(!toggle_mute.value());
+        pmem::set_ui_hide_fake_brightness(!toggle_fake_brightness.value());
         pmem::set_ui_hide_battery_icon(!toggle_battery_icon.value());
         pmem::set_ui_hide_numeric_battery(!toggle_battery_text.value());
         pmem::set_ui_hide_sd_card(!toggle_sd_card.value());
@@ -777,13 +780,20 @@ void SetConfigModeView::focus() {
 /* SetDisplayView ************************************/
 
 SetDisplayView::SetDisplayView(NavigationView& nav) {
-    add_children({&button_save,
+    add_children({&labels,
+                  &field_fake_brightness,
+                  &button_save,
                   &button_cancel,
-                  &checkbox_invert_switch});
+                  &checkbox_invert_switch,
+                  &checkbox_brightness_switch});
 
+    field_fake_brightness.set_by_value(pmem::fake_brightness_level());
+    checkbox_brightness_switch.set_value(pmem::apply_fake_brightness());
     checkbox_invert_switch.set_value(pmem::config_lcd_inverted_mode());
 
     button_save.on_select = [&nav, this](Button&) {
+        pmem::set_apply_fake_brightness(checkbox_brightness_switch.value());
+        pmem::set_fake_brightness_level(field_fake_brightness.selected_index_value());
         if (checkbox_invert_switch.value() != pmem::config_lcd_inverted_mode()) {
             display.set_inverted(checkbox_invert_switch.value());
             pmem::set_lcd_inverted_mode(checkbox_invert_switch.value());
@@ -792,6 +802,14 @@ SetDisplayView::SetDisplayView(NavigationView& nav) {
         nav.pop();
     };
 
+    // only enable invert OR fake brightness
+    checkbox_invert_switch.on_select = [this](Checkbox&, bool v) {
+        if (v) checkbox_brightness_switch.set_value(false);
+    };
+    checkbox_brightness_switch.on_select = [this](Checkbox&, bool v) {
+        if (v) checkbox_invert_switch.set_value(false);
+    };
+
     button_cancel.on_select = [&nav, this](Button&) {
         nav.pop();
     };

firmware/application/apps/ui_settings.hpp

@@ -363,8 +363,12 @@ class SetUIView : public View {
         {19 * 8, 14 * 16 + 2, 16, 16},
         &bitmap_icon_batt_text};
 
-    ImageToggle toggle_sd_card{
+    ImageToggle toggle_fake_brightness{
         {21 * 8, 14 * 16 + 2, 16, 16},
+        &bitmap_icon_brightness};
+
+    ImageToggle toggle_sd_card{
+        {23 * 8, 14 * 16 + 2, 16, 16},
         &bitmap_sd_card_ok};
 
     Button button_save{
@@ -705,6 +709,7 @@ class SetConfigModeView : public View {
         "Cancel",
     };
 };
+using portapack::persistent_memory::fake_brightness_level_options;
 
 class SetDisplayView : public View {
    public:
@@ -715,8 +720,27 @@ class SetDisplayView : public View {
     std::string title() const override { return "Display"; };
 
    private:
+    Labels labels{
+        {{1 * 8, 1 * 16}, "Limits screen brightness", Theme::getInstance()->fg_light->foreground},
+        {{1 * 8, 2 * 16}, "(has a small performance", Theme::getInstance()->fg_light->foreground},
+        {{1 * 8, 3 * 16}, "impact when enabled).", Theme::getInstance()->fg_light->foreground},
+        {{2 * 8, 8 * 16}, "Brightness:", Theme::getInstance()->fg_light->foreground},
+    };
+
+    OptionsField field_fake_brightness{
+        {20 * 8, 8 * 16},
+        6,
+        {{"12.5%", fake_brightness_level_options::BRIGHTNESS_12p5},
+         {"25%", fake_brightness_level_options::BRIGHTNESS_25},
+         {"50%", fake_brightness_level_options::BRIGHTNESS_50}}};
+
+    Checkbox checkbox_brightness_switch{
+        {1 * 8, 5 * 16},
+        16,
+        "Enable brightness adjust"};
+
     Checkbox checkbox_invert_switch{
-        {1 * 8, 2 * 16},
+        {1 * 8, 10 * 16},
         23,
         "Invert colors (For IPS)"};
 

firmware/application/ui_navigation.cpp

@@ -310,6 +310,15 @@ SystemStatusView::SystemStatusView(
         this->on_bias_tee();
     };
 
+    button_fake_brightness.on_select = [this](ImageButton&) {
+        set_dirty();
+        pmem::toggle_fake_brightness_level();
+        refresh();
+        if (nullptr != parent()) {
+            parent()->set_dirty();  // The parent of NavigationView shal be the SystemView
+        }
+    };
+
     button_camera.on_select = [this](ImageButton&) {
         this->on_camera();
     };
@@ -373,6 +382,7 @@ void SystemStatusView::refresh() {
     // Display "Disable speaker" icon only if AK4951 Codec which has separate speaker/headphone control
     if (audio::speaker_disable_supported() && !pmem::ui_hide_speaker()) status_icons.add(&toggle_speaker);
 
+    if (!pmem::ui_hide_fake_brightness() && !pmem::config_lcd_inverted_mode()) status_icons.add(&button_fake_brightness);
     if (battery::BatteryManagement::isDetected()) {
         batt_was_inited = true;
         if (!pmem::ui_hide_battery_icon()) {
@@ -405,6 +415,9 @@ void SystemStatusView::refresh() {
     button_converter.set_bitmap(pmem::config_updown_converter() ? &bitmap_icon_downconvert : &bitmap_icon_upconvert);
     button_converter.set_foreground(pmem::config_converter() ? Theme::getInstance()->fg_red->foreground : Theme::getInstance()->fg_light->foreground);
 
+    // Fake Brightness
+    button_fake_brightness.set_foreground((pmem::apply_fake_brightness() & (!pmem::config_lcd_inverted_mode())) ? *Theme::getInstance()->status_active : Theme::getInstance()->fg_light->foreground);
+
     set_dirty();
 }
 

firmware/application/ui_navigation.hpp

@@ -280,6 +280,12 @@ class SystemStatusView : public View {
         Theme::getInstance()->fg_light->foreground,
         Theme::getInstance()->bg_dark->background};
 
+    ImageButton button_fake_brightness{
+        {0, 0, 2 * 8, 1 * 16},
+        &bitmap_icon_brightness,
+        *Theme::getInstance()->status_active,
+        Theme::getInstance()->bg_dark->background};
+
     SDCardStatusView sd_card_status_view{
         {0, 0 * 16, 2 * 8, 1 * 16}};
 

firmware/common/lcd_ili9341.cpp

@@ -231,6 +231,7 @@ void lcd_start_ram_write(
     lcd_caset(p.x(), p.x() + s.width() - 1);
     lcd_paset(p.y(), p.y() + s.height() - 1);
     lcd_ramwr_start();
+    io.update_cached_values();
 }
 
 void lcd_start_ram_read(

firmware/common/portapack_io.cpp

@@ -77,10 +77,24 @@ void IO::reference_oscillator(const bool enable) {
     io_write(1, io_reg);
 }
 
+bool IO::get_dark_cover() {
+    return portapack::persistent_memory::apply_fake_brightness() & (!portapack::persistent_memory::config_lcd_inverted_mode());
+}
+
 bool IO::get_is_inverted() {
     return portapack::persistent_memory::config_lcd_inverted_mode();
 }
 
+uint8_t IO::get_brightness() {
+    return portapack::persistent_memory::fake_brightness_level();
+}
+
+void IO::update_cached_values() {
+    inverted_enabled = get_is_inverted();
+    dark_cover_enabled = get_dark_cover();
+    brightness = get_brightness();
+}
+
 uint32_t IO::io_update(const TouchPinsConfig write_value) {
     /* Very touchy code to save context of PortaPack data bus while the
      * resistive touch pin drive is changed. Order of operations is

firmware/common/portapack_io.hpp

@@ -162,6 +162,9 @@ class IO {
     }
 
     void lcd_write_pixel(ui::Color pixel) {
+        if (dark_cover_enabled) {
+            pixel.v = DARKENED_PIXEL(pixel.v, brightness);
+        }
         lcd_write_data(pixel.v);
     }
 
@@ -170,12 +173,18 @@ class IO {
     }
 
     void lcd_write_pixels(ui::Color pixel, size_t n) {
+        if (dark_cover_enabled) {
+            pixel.v = DARKENED_PIXEL(pixel.v, brightness);
+        }
         while (n--) {
             lcd_write_data(pixel.v);
         }
     }
 
     void lcd_write_pixels_unrolled8(ui::Color pixel, size_t n) {
+        if (dark_cover_enabled) {
+            pixel.v = DARKENED_PIXEL(pixel.v, brightness);
+        }
         auto v = pixel.v;
         n >>= 3;
         while (n--) {
@@ -222,7 +231,13 @@ class IO {
 
         return switches_raw;
     }
+    bool inverted_enabled = false;
+    bool dark_cover_enabled = false;
+    uint8_t brightness = 0;
     bool get_is_inverted();
+    bool get_dark_cover();
+    uint8_t get_brightness();
+    void update_cached_values();
 
     uint32_t io_update(const TouchPinsConfig write_value);
 
@@ -404,6 +419,13 @@ class IO {
         const auto value_low = data_read();
         uint32_t original_value = (value_high << 8) | value_low;
 
+        if (inverted_enabled) return original_value;
+
+        if (dark_cover_enabled) {
+            // this is read data, so if the fake brightness is enabled AKA get_dark_cover() == true,
+            // then shift to back side AKA UNDARKENED_PIXEL, to prevent read shifted darkern info
+            original_value = UNDARKENED_PIXEL(original_value, brightness);
+        }
         return original_value;
     }
 

firmware/common/portapack_persistent_memory.cpp

@@ -109,7 +109,7 @@ struct ui_config_t {
     bool hide_clock : 1;
     bool clock_show_date : 1;
     bool clkout_enabled : 1;
-    bool unused_FB : 1;  // apply_fake_brightness
+    bool apply_fake_brightness : 1;  // Fake brightness level, which eventually could be something along the lines of apply_pwm_brightness
     bool stealth_mode : 1;
     bool config_login : 1;
     bool config_splash : 1;
@@ -130,7 +130,7 @@ struct ui_config2_t {
     bool hide_sd_card : 1;
 
     bool hide_mute : 1;
-    bool UNUSED_3 : 1;
+    bool hide_fake_brightness : 1;
     bool hide_numeric_battery : 1;
     bool hide_battery_icon : 1;
     bool override_batt_calc : 1;
@@ -226,6 +226,9 @@ struct data_t {
     // Rotary encoder dial sensitivity (encoder.cpp/hpp)
     uint16_t encoder_dial_sensitivity : 4;
 
+    // fake brightness level (not switch, switch is in another place)
+    uint16_t fake_brightness_level : 4;
+
     // Encoder rotation rate multiplier for larger increments when rotated rapidly
     uint16_t encoder_rate_multiplier : 4;
 
@@ -297,6 +300,7 @@ struct data_t {
           frequency_tx_correction(0),
 
           encoder_dial_sensitivity(DIAL_SENSITIVITY_NORMAL),
+          fake_brightness_level(BRIGHTNESS_50),
           encoder_rate_multiplier(1),
           UNUSED(0),
 
@@ -465,6 +469,7 @@ void init() {
     set_config_mode_storage_direct(config_mode_backup);
 
     // Firmware upgrade handling - adjust newly defined fields where 0 is an invalid default
+    if (fake_brightness_level() == 0) set_fake_brightness_level(BRIGHTNESS_50);
     if (menu_color().v == 0) set_menu_color(Color::grey());
 }
 
@@ -645,6 +650,10 @@ bool stealth_mode() {
     return data->ui_config.stealth_mode;
 }
 
+bool apply_fake_brightness() {
+    return data->ui_config.apply_fake_brightness;
+}
+
 bool config_login() {
     return data->ui_config.config_login;
 }
@@ -748,6 +757,10 @@ void set_config_backlight_timer(const backlight_config_t& new_value) {
     data->ui_config.enable_backlight_timeout = static_cast<uint8_t>(new_value.timeout_enabled());
 }
 
+void set_apply_fake_brightness(const bool v) {
+    data->ui_config.apply_fake_brightness = v;
+}
+
 uint32_t pocsag_last_address() {
     return data->pocsag_last_address;
 }
@@ -934,7 +947,9 @@ bool ui_hide_clock() {
 bool ui_hide_sd_card() {
     return data->ui_config2.hide_sd_card;
 }
-
+bool ui_hide_fake_brightness() {
+    return data->ui_config2.hide_fake_brightness;
+}
 bool ui_hide_numeric_battery() {
     return data->ui_config2.hide_numeric_battery;
 }
@@ -977,6 +992,9 @@ void set_ui_hide_clock(bool v) {
 void set_ui_hide_sd_card(bool v) {
     data->ui_config2.hide_sd_card = v;
 }
+void set_ui_hide_fake_brightness(bool v) {
+    data->ui_config2.hide_fake_brightness = v;
+}
 void set_ui_hide_numeric_battery(bool v) {
     data->ui_config2.hide_numeric_battery = v;
 }
@@ -1094,6 +1112,26 @@ void set_config_dst(dst_config_t v) {
     rtc_time::dst_init();
 }
 
+// Fake brightness level (switch is in another place)
+uint8_t fake_brightness_level() {
+    return data->fake_brightness_level;
+}
+void set_fake_brightness_level(uint8_t v) {
+    data->fake_brightness_level = v;
+}
+
+// Cycle through 4 brightness options: disabled -> enabled/50% -> enabled/25% -> enabled/12.5% -> disabled
+void toggle_fake_brightness_level() {
+    bool fbe = apply_fake_brightness();
+    if (config_lcd_inverted_mode()) return;  // for now only inverted mode OR fake brightness
+    if ((!fbe) || (data->fake_brightness_level >= BRIGHTNESS_12p5)) {
+        set_apply_fake_brightness(!fbe);
+        data->fake_brightness_level = BRIGHTNESS_50;
+    } else {
+        data->fake_brightness_level++;
+    }
+}
+
 // Menu Color Scheme
 Color menu_color() {
     return data->menu_color;
@@ -1211,6 +1249,7 @@ bool debug_dump() {
     pmem_dump_file.write_line("headphone_volume_cb: " + to_string_dec_int(data->headphone_volume_cb));
     pmem_dump_file.write_line("config_mode_storage: 0x" + to_string_hex(data->config_mode_storage, 8));
     pmem_dump_file.write_line("dst_config: 0x" + to_string_hex((uint32_t)data->dst_config.v, 8));
+    pmem_dump_file.write_line("fake_brightness_level: " + to_string_dec_uint(data->fake_brightness_level));
     pmem_dump_file.write_line("menu_color: 0x" + to_string_hex(data->menu_color.v, 4));
     pmem_dump_file.write_line("touchscreen_threshold: " + to_string_dec_uint(data->touchscreen_threshold));
 
@@ -1227,6 +1266,7 @@ bool debug_dump() {
     pmem_dump_file.write_line("ui_config hide_clock: " + to_string_dec_uint(data->ui_config.hide_clock));
     pmem_dump_file.write_line("ui_config clock_with_date: " + to_string_dec_uint(data->ui_config.clock_show_date));
     pmem_dump_file.write_line("ui_config clkout_enabled: " + to_string_dec_uint(data->ui_config.clkout_enabled));
+    pmem_dump_file.write_line("ui_config apply_fake_brightness: " + to_string_dec_uint(data->ui_config.apply_fake_brightness));
     pmem_dump_file.write_line("ui_config stealth_mode: " + to_string_dec_uint(data->ui_config.stealth_mode));
     pmem_dump_file.write_line("ui_config config_login: " + to_string_dec_uint(data->ui_config.config_login));
     pmem_dump_file.write_line("ui_config config_splash: " + to_string_dec_uint(data->ui_config.config_splash));
@@ -1241,6 +1281,7 @@ bool debug_dump() {
     pmem_dump_file.write_line("ui_config2 hide_clock: " + to_string_dec_uint(data->ui_config2.hide_clock));
     pmem_dump_file.write_line("ui_config2 hide_sd_card: " + to_string_dec_uint(data->ui_config2.hide_sd_card));
     pmem_dump_file.write_line("ui_config2 hide_mute: " + to_string_dec_uint(data->ui_config2.hide_mute));
+    pmem_dump_file.write_line("ui_config2 hide_fake_brightness: " + to_string_dec_uint(data->ui_config2.hide_fake_brightness));
     pmem_dump_file.write_line("ui_config2 hide_battery_icon: " + to_string_dec_uint(data->ui_config2.hide_battery_icon));
     pmem_dump_file.write_line("ui_config2 hide_numeric_battery: " + to_string_dec_uint(data->ui_config2.hide_numeric_battery));
     pmem_dump_file.write_line("ui_config2 theme_id: " + to_string_dec_uint(data->ui_config2.theme_id));