Fixes for colours and margins in GPIO app and more (#284 )

- Fixes for colours and margins in GPIO app - Removed unused imports
Reduced desktop icon sizes (#283 )
2025-06-01 17:52:09 +02:00 · 2025-06-01 17:11:29 +02:00 · 2025-05-27 08:08:04 +02:00 · 2025-05-25 22:11:50 +02:00 · 2025-05-24 17:27:37 +02:00 · 2025-05-06 19:52:55 +02:00
122 changed files with 1511 additions and 470 deletions
--- a/App/Source/Boards.h
+++ b/App/Source/Boards.h
@ -1,4 +1,5 @@
 #pragma once
+#include <Tactility/hal/Configuration.h>

 #ifdef ESP_PLATFORM
 #include <sdkconfig.h>
--- a/Boards/Simulator/Source/Simulator.h
+++ b/Boards/Simulator/Source/Simulator.h
@ -1,7 +1,6 @@
 #pragma once

 #include "Main.h"
-#include <Tactility/hal/Configuration.h>

 namespace simulator {
    /** Set the function pointer of the real app_main() */
--- a/Buildscripts/board.cmake
+++ b/Buildscripts/board.cmake
@ -1,3 +1,12 @@
+if (NOT WIN32)
+    string(ASCII 27 Esc)
+    set(ColorReset "${Esc}[m")
+    set(Cyan "${Esc}[36m")
+else ()
+    set(ColorReset "")
+    set(Cyan "")
+endif ()
+
 function(INIT_TACTILITY_GLOBALS SDKCONFIG_FILE)
    get_filename_component(SDKCONFIG_FILE_ABS ${SDKCONFIG_FILE} ABSOLUTE)
    # Find the board identifier in the sdkconfig file
@ -10,7 +19,7 @@ function(INIT_TACTILITY_GLOBALS SDKCONFIG_FILE)
    set(id_length 0)
    math(EXPR id_length "${sdkconfig_board_id_length} - 21")
    string(SUBSTRING ${sdkconfig_board_id} 20 ${id_length} board_id)
-    message("Building board ${board_id}")
+    message("Building board: ${Cyan}${board_id}${ColorReset}")

    if (board_id STREQUAL "cyd-2432s024c")
        set(TACTILITY_BOARD_PROJECT CYD-2432S024C)
@ -53,7 +62,7 @@ function(INIT_TACTILITY_GLOBALS SDKCONFIG_FILE)
    if (TACTILITY_BOARD_PROJECT STREQUAL "")
        message(FATAL_ERROR "No subproject mapped to \"${TACTILITY_BOARD_ID}\" in root Buildscripts/board.cmake")
    else ()
-        message("Board project: Boards/${TACTILITY_BOARD_PROJECT}")
+        message("Board project: ${Cyan}Boards/${TACTILITY_BOARD_PROJECT}${ColorReset}\n")
        set_property(GLOBAL PROPERTY TACTILITY_BOARD_PROJECT ${TACTILITY_BOARD_PROJECT})
        set_property(GLOBAL PROPERTY TACTILITY_BOARD_ID ${board_id})
    endif ()
--- a/Buildscripts/colors.cmake
+++ b/Buildscripts/colors.cmake
@ -0,0 +1,14 @@
+if (NOT WIN32)
+    string(ASCII 27 Esc)
+    set(ColorReset "${Esc}[m")
+    set(Cyan        "${Esc}[36m")
+    set(Grey        "${Esc}[37m")
+    set(LightPurple "${Esc}[1;35m")
+    set(White       "${Esc}[1;37m")
+else ()
+    set(ColorReset "")
+    set(Cyan        "")
+    set(Grey        "")
+    set(LightPurple "")
+    set(White       "")
+endif ()
--- a/Buildscripts/logo.cmake
+++ b/Buildscripts/logo.cmake
@ -4,24 +4,24 @@ file(READ ${VERSION_TEXT_FILE} TACTILITY_VERSION)

 if (DEFINED ENV{ESP_IDF_VERSION})
    set(TACTILITY_TARGET "   @ ESP-IDF")
-else()
+else ()
    set(TACTILITY_TARGET "  @ Simulator")
-endif()
+endif ()

-if(NOT WIN32)
+if (NOT WIN32)
    string(ASCII 27 Esc)
-    set(ColourReset "${Esc}[m")
-    set(Cyan        "${Esc}[36m")
-    set(Grey        "${Esc}[37m")
+    set(ColorReset "${Esc}[m")
+    set(Cyan "${Esc}[36m")
+    set(Grey "${Esc}[37m")
    set(LightPurple "${Esc}[1;35m")
-    set(White       "${Esc}[1;37m")
-else()
-    set(ColourReset "")
-    set(Cyan        "")
-    set(Grey        "")
+    set(White "${Esc}[1;37m")
+else ()
+    set(ColorReset "")
+    set(Cyan "")
+    set(Grey "")
    set(LightPurple "")
-    set(White       "")
-endif()
+    set(White "")
+endif ()

 # Some terminals (e.g. GitHub Actions) reset colour for every in a multiline message(),
 # so we add the colour to each line instead of assuming it would automatically be re-used.
@ -41,4 +41,4 @@ message("\n\n\
              ${Cyan}@@@\n\
              ${Cyan}@@@\n\
              ${Cyan}@@@\n\
-              ${Cyan}@@\n\n${ColourReset}")
+              ${Cyan}@@\n\n${ColorReset}")
--- a/Buildscripts/release-sdk.sh
+++ b/Buildscripts/release-sdk.sh
@ -46,4 +46,4 @@ cp Libraries/elf_loader/license.txt $elf_loader_library_path/

 cp Buildscripts/CMake/TactilitySDK.cmake $target_path/
 cp Buildscripts/CMake/CMakeLists.txt $target_path/
-echo -n $ESP_IDF_VERSION >> $target_path/idf-version.txt
+printf '%s' "$ESP_IDF_VERSION" >> $target_path/idf-version.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -8,14 +8,24 @@ set(CMAKE_ASM_COMPILE_OBJECT "${CMAKE_CXX_COMPILER_TARGET}")

 include("Buildscripts/logo.cmake")

+if (NOT WIN32)
+    string(ASCII 27 Esc)
+    set(ColorReset "${Esc}[m")
+    set(Cyan "${Esc}[36m")
+else ()
+    set(ColorReset "")
+    set(Cyan "")
+endif ()
+
 file(READ version.txt TACTILITY_VERSION)
 add_compile_definitions(TT_VERSION="${TACTILITY_VERSION}")

 if (DEFINED ENV{ESP_IDF_VERSION})
-    message("Building with ESP-IDF v$ENV{ESP_IDF_VERSION}")
+    message("Building with ESP-IDF ${Cyan}v$ENV{ESP_IDF_VERSION}${ColorReset}")
    include($ENV{IDF_PATH}/tools/cmake/project.cmake)

    include("Buildscripts/board.cmake")
+
    init_tactility_globals("sdkconfig")
    get_property(TACTILITY_BOARD_PROJECT GLOBAL PROPERTY TACTILITY_BOARD_PROJECT)

@ -45,11 +55,11 @@ if (DEFINED ENV{ESP_IDF_VERSION})
    add_compile_definitions(LV_CONF_PATH="${LVGL_CONFIG_FULL_PATH}/lv_conf_kconfig.h")
    idf_build_set_property(LINK_OPTIONS "-Wl,--wrap=esp_panic_handler" APPEND)
    idf_build_set_property(LINK_OPTIONS "-Wl,--wrap=esp_log_write" APPEND)
-else()
+else ()
    message("Building for sim target")
    add_compile_definitions(CONFIG_TT_BOARD_ID="simulator")
    add_compile_definitions(CONFIG_TT_BOARD_NAME="Simulator")
-endif()
+endif ()

 project(Tactility)

@ -58,7 +68,7 @@ if (NOT DEFINED ENV{ESP_IDF_VERSION})
    add_subdirectory(Tactility)
    add_subdirectory(TactilityCore)
    add_subdirectory(Boards/Simulator)
-endif()
+endif ()

 if (NOT DEFINED ENV{ESP_IDF_VERSION})
    # FreeRTOS
@ -94,4 +104,4 @@ if (NOT DEFINED ENV{ESP_IDF_VERSION})
    target_compile_definitions(lvgl PUBLIC "-DLV_CONF_PATH=\"${PROJECT_SOURCE_DIR}/Libraries/lvgl_conf/lv_conf_simulator.h\"")
    target_link_libraries(lvgl PRIVATE SDL2-static)

-endif()
+endif ()
--- a/Data/system/app/Launcher/icon_apps.png
+++ b/Data/system/app/Launcher/icon_apps.png
--- a/Data/system/app/Launcher/icon_files.png
+++ b/Data/system/app/Launcher/icon_files.png
--- a/Data/system/app/Launcher/icon_settings.png
+++ b/Data/system/app/Launcher/icon_settings.png
--- a/Data/system/app_icon_calculator_dark_mode.png
+++ b/Data/system/app_icon_calculator_dark_mode.png
--- a/Data/system/app_icon_chat_dark_mode.png
+++ b/Data/system/app_icon_chat_dark_mode.png
--- a/Data/system/app_icon_display_settings_dark_mode.png
+++ b/Data/system/app_icon_display_settings_dark_mode.png
--- a/Data/system/app_icon_fallback_dark_mode.png
+++ b/Data/system/app_icon_fallback_dark_mode.png
--- a/Data/system/app_icon_files_dark_mode.png
+++ b/Data/system/app_icon_files_dark_mode.png
--- a/Data/system/app_icon_gpio_dark_mode.png
+++ b/Data/system/app_icon_gpio_dark_mode.png
--- a/Data/system/app_icon_i2c_dark_mode.png
+++ b/Data/system/app_icon_i2c_dark_mode.png
--- a/Data/system/app_icon_notes_dark_mode.png
+++ b/Data/system/app_icon_notes_dark_mode.png
--- a/Data/system/app_icon_power_settings_dark_mode.png
+++ b/Data/system/app_icon_power_settings_dark_mode.png
--- a/Data/system/app_icon_settings_dark_mode.png
+++ b/Data/system/app_icon_settings_dark_mode.png
--- a/Data/system/app_icon_system_info_dark_mode.png
+++ b/Data/system/app_icon_system_info_dark_mode.png
--- a/Data/system/app_icon_time_date_settings_dark_mode.png
+++ b/Data/system/app_icon_time_date_settings_dark_mode.png
--- a/Icons/app_icon_calculator.png
+++ b/Icons/app_icon_calculator.png
--- a/Icons/app_icon_chat.png
+++ b/Icons/app_icon_chat.png
--- a/Data/system/app_icon_display_settings.png
+++ b/Data/system/app_icon_display_settings.png
--- a/Data/system/app_icon_fallback.png
+++ b/Data/system/app_icon_fallback.png
--- a/Data/system/app_icon_files.png
+++ b/Data/system/app_icon_files.png
--- a/Icons/app_icon_gpio.png
+++ b/Icons/app_icon_gpio.png
--- a/Data/system/app_icon_i2c.png
+++ b/Data/system/app_icon_i2c.png
--- a/Icons/app_icon_notes.png
+++ b/Icons/app_icon_notes.png
--- a/Data/system/app_icon_power_settings.png
+++ b/Data/system/app_icon_power_settings.png
--- a/Data/system/app_icon_settings.png
+++ b/Data/system/app_icon_settings.png
--- a/Data/system/app_icon_system_info.png
+++ b/Data/system/app_icon_system_info.png
--- a/Data/system/app_icon_time_date_settings.png
+++ b/Data/system/app_icon_time_date_settings.png
--- a/Data/system_sources/app/Desktop/apps.svg
+++ b/Data/system_sources/app/Desktop/apps.svg
@ -1 +0,0 @@
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--- a/Data/system_sources/app/Desktop/folder.svg
+++ b/Data/system_sources/app/Desktop/folder.svg
@ -1 +0,0 @@
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--- a/Data/system_sources/app/Desktop/settings.svg
+++ b/Data/system_sources/app/Desktop/settings.svg
@ -1 +0,0 @@
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--- a/Data/system_sources/app/Launcher/apps.svg
+++ b/Data/system_sources/app/Launcher/apps.svg
@ -0,0 +1,42 @@
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--- a/Data/system_sources/app/Launcher/folder.svg
+++ b/Data/system_sources/app/Launcher/folder.svg
@ -0,0 +1,42 @@
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--- a/Data/system_sources/app/Launcher/settings.svg
+++ b/Data/system_sources/app/Launcher/settings.svg
@ -0,0 +1,42 @@
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--- a/Data/system_sources/app_icon_calculator.svg
+++ b/Data/system_sources/app_icon_calculator.svg
@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- License: Apache. Made by Iconscout: https://github.com/Iconscout/unicons -->
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--- a/Data/system_sources/app_icon_chat.svg
+++ b/Data/system_sources/app_icon_chat.svg
@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- License: PD. Made by Mary Akveo: https://maryakveo.com/ -->
+<svg fill="#000000" width="800px" height="800px" viewBox="0 0 24 24" id="chat" data-name="Line Color" xmlns="http://www.w3.org/2000/svg" class="icon line-color"><path id="primary" d="M18.81,16.23,20,21l-4.95-2.48A9.84,9.84,0,0,1,12,19c-5,0-9-3.58-9-8s4-8,9-8,9,3.58,9,8A7.49,7.49,0,0,1,18.81,16.23Z" style="fill: none; stroke: #000000; stroke-linecap: round; stroke-linejoin: round; stroke-width: 2;"></path></svg>
--- a/Data/system_sources/app_icon_gpio.svg
+++ b/Data/system_sources/app_icon_gpio.svg
@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- License: PD. Made by Mary Akveo: https://maryakveo.com/ -->
+<svg fill="#000000" width="800px" height="800px" viewBox="0 0 24 24" id="chip" data-name="Flat Line" xmlns="http://www.w3.org/2000/svg" class="icon flat-line"><rect id="secondary" x="6" y="6" width="12" height="12" rx="1" style="fill: none; stroke-width: 2;"></rect><path id="primary" d="M12,6V3m4,3V4M8,6V4m10,8h3m-3,4h2M18,8h2M12,18v3M8,18v2m8-2v2M6,12H3M6,8H4m2,8H4m14,1V7a1,1,0,0,0-1-1H7A1,1,0,0,0,6,7V17a1,1,0,0,0,1,1H17A1,1,0,0,0,18,17Z" style="fill: none; stroke: #333333; stroke-linecap: round; stroke-linejoin: round; stroke-width: 2;"></path></svg>
--- a/Data/system_sources/app_icon_notes.svg
+++ b/Data/system_sources/app_icon_notes.svg
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- License: MIT. Made by vmware: https://github.com/vmware/clarity-assets -->
+<svg fill="#000000" width="800px" height="800px" viewBox="0 0 36 36" version="1.1"  preserveAspectRatio="xMidYMid meet" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <title>note-line</title>
+    <path d="M28,30H6V8H19.22l2-2H6A2,2,0,0,0,4,8V30a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V15l-2,2Z" class="clr-i-outline clr-i-outline-path-1"></path><path d="M33.53,5.84,30.16,2.47a1.61,1.61,0,0,0-2.28,0L14.17,16.26l-1.11,4.81A1.61,1.61,0,0,0,14.63,23,1.69,1.69,0,0,0,15,23l4.85-1.07L33.53,8.12A1.61,1.61,0,0,0,33.53,5.84ZM18.81,20.08l-3.66.81L16,17.26,26.32,6.87l2.82,2.82ZM30.27,8.56,27.45,5.74,29,4.16,31.84,7Z" class="clr-i-outline clr-i-outline-path-2"></path>
+    <rect x="0" y="0" width="36" height="36" fill-opacity="0"/>
+</svg>
--- a/Documentation/ideas.md
+++ b/Documentation/ideas.md
@ -2,24 +2,16 @@

 - Add a Keyboard setting app to override the behaviour of soft keyboard hiding (e.g. keyboard hardware is present, but user wants soft keyboard)
 - HAL for display touch calibration
- Display app: hide controls for unsupported features, instead of disabling them
- Split up boot stages, so the last stage can be done from the splash screen
 - Start using non_null (either via MS GSL, or custom)
 - `hal/Configuration.h` defines C function types: Use C++ std::function instead
 - Fix system time to not be 1980 (use build year as minimum)
 - Use std::span or string_view in StringUtils https://youtu.be/FRkJCvHWdwQ?t=2754 
 - Fix bug in T-Deck/etc: esp_lvgl_port settings has a large stack size (~9kB) to fix an issue where the T-Deck would get a stackoverflow. This sometimes happens when WiFi is auto-enabled and you open the app while it is still connecting.
- Clean up static_cast when casting to base class.
 - Mutex: Implement give/take from ISR support (works only for non-recursive ones)
 - Extend unPhone power driver: add charging status, usb connection status, etc.
 - Expose app::Paths to TactilityC
 - Experiment with what happens when using C++ code in an external app (without using standard library!)
- Boards' CMakeLists.txt manually declare each source folder. Update them all to do a recursive search of all folders.
- We currently build all boards for a given platform (e.g. ESP32S3), but it's better to filter all irrelevant ones based on the Kconfig board settings:
-  Projects will load and compile faster as it won't compile all the dependencies of all these other boards
 - Make a ledger for setting CPU affinity of various services and tasks
- Boot hooks instead of a single boot method in config. Define different boot phases/levels in enum.
- Add toggle to Display app for sysmon overlay: https://docs.lvgl.io/master/API/others/sysmon/index.html
 - CrashHandler: use "corrupted" flag
 - CrashHandler: process other types of crashes (WDT?)
 - Call tt::lvgl::isSyncSet after HAL init and show error (and crash?) when it is not set.
@ -53,7 +45,6 @@
 - Capacity based on voltage: estimation for various devices uses linear voltage curve, but it should use some sort of battery discharge curve.
 - Statusbar widget to show how much memory is in use?
 - Wrapper for Slider that shows "+" and "-" buttons, and also the value in a label.
- Display app: Add toggle to display performance measurement overlay (consider showing FPS in statusbar!)
 - Files app: copy/paste actions
 - On crash, try to save current log to flash or SD card? (this is risky, though, so ask in Discord first)
 - Support more than 1 hardware keyboard (see lvgl::hardware_keyboard_set_indev()). LVGL init currently calls keyboard init, but that part should probably be done from the KeyboardDevice base class.
@ -66,8 +57,6 @@
  https://github.com/portapack-mayhem/mayhem-firmware/releases
 - Weather app: https://lab.flipper.net/apps/flip_weather
 - wget app: https://lab.flipper.net/apps/web_crawler (add profiles for known public APIs?)
- USB implementation to make device act as mass storage device.
- System logger
 - BlueTooth keyboard app
 - Chip 8 emulator
 - BadUSB (in December 2024, TinyUSB has a bug where uninstalling and re-installing the driver fails)
@ -76,7 +65,5 @@
 - GPS app
 - Investigate CSI https://stevenmhernandez.github.io/ESP32-CSI-Tool/
 - Compile unix tools to ELF apps?
- Calculator
- Text editor
 - Todo list
 - Calendar
--- a/ExternalApps/HelloWorld/build.sh
+++ b/ExternalApps/HelloWorld/build.sh
@ -1,4 +1,6 @@
 rm sdkconfig
 cp ../../sdkconfig sdkconfig
 cat sdkconfig.override >> sdkconfig
-idf.py elf_app
+# First we must run "build" because otherwise "idf.py elf" is not a valid command
+idf.py build
+idf.py elf
--- a/Libraries/lvgl_conf/lv_conf_simulator.h
+++ b/Libraries/lvgl_conf/lv_conf_simulator.h
@ -558,7 +558,7 @@
 #if LV_USE_THEME_DEFAULT

    /*0: Light mode; 1: Dark mode*/
-    #define LV_THEME_DEFAULT_DARK 0
+    #define LV_THEME_DEFAULT_DARK 1

    /*1: Enable grow on press*/
    #define LV_THEME_DEFAULT_GROW 1
--- a/Tactility/Include/Tactility/Assets.h
+++ b/Tactility/Include/Tactility/Assets.h
@ -7,11 +7,15 @@
 #define TT_ASSETS_UI_SPINNER TT_ASSET("spinner.png")

 // App icons
-#define TT_ASSETS_APP_ICON_FALLBACK TT_ASSET("app_icon_fallback.png")
-#define TT_ASSETS_APP_ICON_FILES TT_ASSET("app_icon_files.png")
-#define TT_ASSETS_APP_ICON_DISPLAY_SETTINGS TT_ASSET("app_icon_display_settings.png")
-#define TT_ASSETS_APP_ICON_POWER_SETTINGS TT_ASSET("app_icon_power_settings.png")
-#define TT_ASSETS_APP_ICON_I2C_SETTINGS TT_ASSET("app_icon_i2c.png")
-#define TT_ASSETS_APP_ICON_SETTINGS TT_ASSET("app_icon_settings.png")
-#define TT_ASSETS_APP_ICON_SYSTEM_INFO TT_ASSET("app_icon_system_info.png")
-#define TT_ASSETS_APP_ICON_TIME_DATE_SETTINGS TT_ASSET("app_icon_time_date_settings.png")
+#define TT_ASSETS_APP_ICON_FALLBACK TT_ASSET("app_icon_fallback_dark_mode.png")
+#define TT_ASSETS_APP_ICON_FILES TT_ASSET("app_icon_files_dark_mode.png")
+#define TT_ASSETS_APP_ICON_DISPLAY_SETTINGS TT_ASSET("app_icon_display_settings_dark_mode.png")
+#define TT_ASSETS_APP_ICON_POWER_SETTINGS TT_ASSET("app_icon_power_settings_dark_mode.png")
+#define TT_ASSETS_APP_ICON_I2C_SETTINGS TT_ASSET("app_icon_i2c_dark_mode.png")
+#define TT_ASSETS_APP_ICON_SETTINGS TT_ASSET("app_icon_settings_dark_mode.png")
+#define TT_ASSETS_APP_ICON_SYSTEM_INFO TT_ASSET("app_icon_system_info_dark_mode.png")
+#define TT_ASSETS_APP_ICON_TIME_DATE_SETTINGS TT_ASSET("app_icon_time_date_settings_dark_mode.png")
+#define TT_ASSETS_APP_ICON_CALCULATOR TT_ASSET("app_icon_calculator_dark_mode.png")
+#define TT_ASSETS_APP_ICON_NOTES TT_ASSET("app_icon_notes_dark_mode.png")
+#define TT_ASSETS_APP_ICON_CHAT TT_ASSET("app_icon_chat_dark_mode.png")
+#define TT_ASSETS_APP_ICON_GPIO TT_ASSET("app_icon_gpio_dark_mode.png")
--- a/Tactility/Include/Tactility/app/App.h
+++ b/Tactility/Include/Tactility/app/App.h
@ -16,9 +16,9 @@ namespace tt::app {
 class AppContext;
 enum class Result;

-class App {
+typedef unsigned int LaunchId;

-private:
+class App {

    Mutex mutex;

@ -44,7 +44,7 @@ public:
    virtual void onDestroy(AppContext& appContext) {}
    virtual void onShow(AppContext& appContext, lv_obj_t* parent) {}
    virtual void onHide(AppContext& appContext) {}
-    virtual void onResult(AppContext& appContext, Result result, std::unique_ptr<Bundle> _Nullable resultData) {}
+    virtual void onResult(AppContext& appContext, LaunchId launchId, Result result, std::unique_ptr<Bundle> _Nullable resultData) {}

    Mutex& getMutex() { return mutex; }

@ -83,15 +83,15 @@ std::shared_ptr<App> create() { return std::shared_ptr<T>(new T); }
 * @param[in] id application name or id
 * @param[in] parameters optional parameters to pass onto the application
 */
-void start(const std::string& id, std::shared_ptr<const Bundle> _Nullable parameters = nullptr);
+LaunchId start(const std::string& id, std::shared_ptr<const Bundle> _Nullable parameters = nullptr);

 /** @brief Stop the currently showing app. Show the previous app if any app was still running. */
 void stop();

 /** @return the currently running app context (it is only ever null before the splash screen is shown) */
-std::shared_ptr<app::AppContext> _Nullable getCurrentAppContext();
+std::shared_ptr<AppContext> _Nullable getCurrentAppContext();

 /** @return the currently running app (it is only ever null before the splash screen is shown) */
-std::shared_ptr<app::App> _Nullable getCurrentApp();
+std::shared_ptr<App> _Nullable getCurrentApp();

 }
--- a/Tactility/Include/Tactility/app/ElfApp.h
+++ b/Tactility/Include/Tactility/app/ElfApp.h
@ -12,7 +12,7 @@ typedef void (*OnCreate)(void* appContext, void* _Nullable data);
 typedef void (*OnDestroy)(void* appContext, void* _Nullable data);
 typedef void (*OnShow)(void* appContext, void* _Nullable data, lv_obj_t* parent);
 typedef void (*OnHide)(void* appContext, void* _Nullable data);
-typedef void (*OnResult)(void* appContext, void* _Nullable data, Result result, Bundle* resultData);
+typedef void (*OnResult)(void* appContext, void* _Nullable data, LaunchId launchId, Result result, Bundle* resultData);

 void setElfAppManifest(
    const char* name,
--- a/Tactility/Include/Tactility/app/filebrowser/FileBrowser.h
+++ b/Tactility/Include/Tactility/app/filebrowser/FileBrowser.h
@ -0,0 +1,7 @@
+#pragma once
+
+namespace tt::app::filebrowser {
+
+void start();
+
+} // namespace
--- a/Tactility/Include/Tactility/app/files/Files.h
+++ b/Tactility/Include/Tactility/app/files/Files.h
@ -1,15 +0,0 @@
-#pragma once
-
-#include "app/files/View.h"
-#include "app/files/State.h"
-#include "app/AppManifest.h"
-
-#include <lvgl.h>
-#include <dirent.h>
-#include <memory>
-
-namespace tt::app::files {
-
-void start();
-
-} // namespace
--- a/Tactility/Include/Tactility/app/fileselection/FileSelection.h
+++ b/Tactility/Include/Tactility/app/fileselection/FileSelection.h
@ -0,0 +1,23 @@
+#pragma once
+
+namespace tt::app::fileselection {
+
+/**
+ * Show a file selection dialog that allows the user to select an existing file.
+ * This app returns the absolute file path as a result.
+ */
+LaunchId startForExistingFile();
+
+/**
+ * Show a file selection dialog that allows the user to select a new or existing file.
+ * This app returns the absolute file path as a result.
+ */
+LaunchId startForExistingOrNewFile();
+
+/**
+ * @param bundle the result bundle of an app
+ * @return the path from the bundle, or empty string if none is present
+ */
+std::string getResultPath(const Bundle& bundle);
+
+} // namespace
--- a/Tactility/Include/Tactility/app/serialconsole/ConnectView.h
+++ b/Tactility/Include/Tactility/app/serialconsole/ConnectView.h
@ -98,6 +98,8 @@ public:
        lv_dropdown_set_options(busDropdown, bus_options.c_str());
        lv_obj_align(busDropdown, LV_ALIGN_TOP_RIGHT, 0, 0);
        lv_obj_set_width(busDropdown, LV_PCT(50));
+        lv_obj_set_style_border_color(busDropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+        lv_obj_set_style_border_width(busDropdown, 1, LV_PART_MAIN);
        int32_t bus_index = 0;
        preferences.optInt32("bus", bus_index);
        if (bus_index < uartNames.size()) {
--- a/Tactility/Include/Tactility/hal/Configuration.h
+++ b/Tactility/Include/Tactility/hal/Configuration.h
@ -1,6 +1,5 @@
 #pragma once

-#include "Tactility/hal/gps/GpsDevice.h"
 #include "Tactility/hal/sdcard/SdCardDevice.h"
 #include "Tactility/hal/spi/Spi.h"
 #include "Tactility/hal/uart/Uart.h"
--- a/Tactility/Include/Tactility/hal/sdcard/SdCardDevice.h
+++ b/Tactility/Include/Tactility/hal/sdcard/SdCardDevice.h
@ -53,7 +53,7 @@ std::shared_ptr<SdCardDevice> _Nullable find(const std::string& path);
 * Always calls the function, but doesn't lock if the path is not an SD card path.
 */
 template<typename ReturnType>
-inline ReturnType withSdCardLock(const std::string& path, std::function<ReturnType()> fn) {
+ ReturnType withSdCardLock(const std::string& path, std::function<ReturnType()> fn) {
    auto sdcard = find(path);
    if (sdcard != nullptr) {
        auto scoped_lockable = sdcard->getLock().asScopedLock();
--- a/Tactility/Include/Tactility/lvgl/Color.h
+++ b/Tactility/Include/Tactility/lvgl/Color.h
@ -0,0 +1,9 @@
+#pragma once
+
+#include <lvgl.h>
+
+lv_color_t lv_color_foreground();
+
+lv_color_t lv_color_background();
+
+lv_color_t lv_color_background_darkest();
--- a/Tactility/Include/Tactility/lvgl/LabelUtils.h
+++ b/Tactility/Include/Tactility/lvgl/LabelUtils.h
@ -1,6 +1,6 @@
 #pragma once

-#include "lvgl.h"
+#include <lvgl.h>

 namespace tt::lvgl {

--- a/Tactility/Include/Tactility/lvgl/Lvgl.h
+++ b/Tactility/Include/Tactility/lvgl/Lvgl.h
@ -0,0 +1,5 @@
+#pragma once
+
+#include <lvgl.h>
+
+#include "./Colors.h"
--- a/Tactility/Include/Tactility/lvgl/Spinner.h
+++ b/Tactility/Include/Tactility/lvgl/Spinner.h
@ -1,4 +1,4 @@
-#include "lvgl.h"
+#include <lvgl.h>

 namespace tt::lvgl {

--- a/Tactility/Include/Tactility/lvgl/Style.h
+++ b/Tactility/Include/Tactility/lvgl/Style.h
@ -1,6 +1,6 @@
 #pragma once

-#include "lvgl.h"
+#include <lvgl.h>

 namespace tt::lvgl {

--- a/Tactility/Include/Tactility/lvgl/Toolbar.h
+++ b/Tactility/Include/Tactility/lvgl/Toolbar.h
@ -1,7 +1,7 @@
 #pragma once

-#include "lvgl.h"
 #include "../app/AppContext.h"
+#include <lvgl.h>

 namespace tt::lvgl {

--- a/Tactility/Include/Tactility/service/loader/Loader.h
+++ b/Tactility/Include/Tactility/service/loader/Loader.h
@ -4,7 +4,6 @@

 #include <Tactility/Bundle.h>
 #include <Tactility/PubSub.h>
-#include <Tactility/service/ServiceManifest.h>

 #include <memory>

@ -30,7 +29,7 @@ struct LoaderEvent {
 * @param[in] id application name or id
 * @param[in] parameters optional parameters to pass onto the application
 */
-void startApp(const std::string& id, std::shared_ptr<const Bundle> _Nullable parameters = nullptr);
+app::LaunchId startApp(const std::string& id, std::shared_ptr<const Bundle> _Nullable parameters = nullptr);

 /** @brief Stop the currently showing app. Show the previous app if any app was still running. */
 void stopApp();
--- a/Tactility/Private/Tactility/app/AppInstance.h
+++ b/Tactility/Private/Tactility/app/AppInstance.h
@ -25,22 +25,21 @@ enum class State {
 */
 class AppInstance : public AppContext {

-private:
-
    Mutex mutex = Mutex(Mutex::Type::Normal);
    const std::shared_ptr<AppManifest> manifest;
    State state = State::Initial;
+    LaunchId launchId;
    Flags flags = { .showStatusbar = true };
    /** @brief Optional parameters to start the app with
     * When these are stored in the app struct, the struct takes ownership.
     * Do not mutate after app creation.
     */
-    std::shared_ptr<const tt::Bundle> _Nullable parameters;
+    std::shared_ptr<const Bundle> _Nullable parameters;

    std::shared_ptr<App> app;

-    static std::shared_ptr<app::App> createApp(
-        const std::shared_ptr<app::AppManifest>& manifest
+    static std::shared_ptr<App> createApp(
+        const std::shared_ptr<AppManifest>& manifest
    ) {
        if (manifest->location.isInternal()) {
            assert(manifest->createApp != nullptr);
@ -50,7 +49,7 @@ private:
                TT_LOG_W("", "Manifest specifies createApp, but this is not used with external apps");
            }
 #ifdef ESP_PLATFORM
-            return app::createElfApp(manifest);
+            return createElfApp(manifest);
 #else
            tt_crash("not supported");
 #endif
@ -61,18 +60,23 @@ private:

 public:

-    explicit AppInstance(const std::shared_ptr<AppManifest>& manifest) :
+    explicit AppInstance(const std::shared_ptr<AppManifest>& manifest, LaunchId launchId) :
        manifest(manifest),
+        launchId(launchId),
        app(createApp(manifest))
    {}

-    AppInstance(const std::shared_ptr<AppManifest>& manifest, std::shared_ptr<const Bundle> parameters) :
+    AppInstance(const std::shared_ptr<AppManifest>& manifest, LaunchId launchId, std::shared_ptr<const Bundle> parameters) :
        manifest(manifest),
+        launchId(launchId),
        parameters(std::move(parameters)),
-        app(createApp(manifest)) {}
+        app(createApp(manifest))
+    {}

    ~AppInstance() override = default;

+    LaunchId getLaunchId() const { return launchId; }
+
    void setState(State state);
    State getState() const;

--- a/Tactility/Private/Tactility/app/filebrowser/State.h
+++ b/Tactility/Private/Tactility/app/filebrowser/State.h
@ -6,7 +6,7 @@
 #include <vector>
 #include <dirent.h>

-namespace tt::app::files {
+namespace tt::app::filebrowser {

 class State {

--- a/Tactility/Private/Tactility/app/filebrowser/SupportedFiles.h
+++ b/Tactility/Private/Tactility/app/filebrowser/SupportedFiles.h
@ -0,0 +1,11 @@
+#pragma once
+
+#include <string>
+
+namespace tt::app::filebrowser {
+
+bool isSupportedExecutableFile(const std::string& filename);
+bool isSupportedImageFile(const std::string& filename);
+bool isSupportedTextFile(const std::string& filename);
+
+} // namespace
--- a/Tactility/Private/Tactility/app/filebrowser/View.h
+++ b/Tactility/Private/Tactility/app/filebrowser/View.h
@ -7,7 +7,7 @@
 #include <lvgl.h>
 #include <memory>

-namespace tt::app::files {
+namespace tt::app::filebrowser {

 class View {
    std::shared_ptr<State> state;
--- a/Tactility/Private/Tactility/app/files/FileUtils.h
+++ b/Tactility/Private/Tactility/app/files/FileUtils.h
@ -1,66 +0,0 @@
-#pragma once
-
-#include <dirent.h>
-#include <string>
-#include <sys/stat.h>
-#include <vector>
-
-namespace tt::app::files {
-
-/** File types for `dirent`'s `d_type`. */
-enum {
-    TT_DT_UNKNOWN = 0,
-#define TT_DT_UNKNOWN TT_DT_UNKNOWN // Unknown type
-    TT_DT_FIFO = 1,
-#define TT_DT_FIFO TT_DT_FIFO // Named pipe or FIFO
-    TT_DT_CHR = 2,
-#define TT_DT_CHR TT_DT_CHR // Character device
-    TT_DT_DIR = 4,
-#define TT_DT_DIR TT_DT_DIR // Directory
-    TT_DT_BLK = 6,
-#define TT_DT_BLK TT_DT_BLK // Block device
-    TT_DT_REG = 8,
-#define TT_DT_REG TT_DT_REG // Regular file
-    TT_DT_LNK = 10,
-#define TT_DT_LNK TT_DT_LNK // Symbolic link
-    TT_DT_SOCK = 12,
-#define TT_DT_SOCK TT_DT_SOCK // Local-domain socket
-    TT_DT_WHT = 14
-#define TT_DT_WHT TT_DT_WHT // Whiteout inodes
-};
-
-
-std::string getChildPath(const std::string& basePath, const std::string& childPath);
-
-typedef int (*ScandirFilter)(const struct dirent*);
-
-typedef bool (*ScandirSort)(const struct dirent&, const struct dirent&);
-
-bool dirent_sort_alpha_and_type(const struct dirent& left, const struct dirent& right);
-
-int dirent_filter_dot_entries(const struct dirent* entry);
-
-/**
- * A scandir()-like implementation that works on ESP32.
- * It does not return "." and ".." items but otherwise functions the same.
- * It returns an allocated output array with allocated dirent instances.
- * The caller is responsible for free-ing the memory of these.
- *
- * @param[in] path path the scan for files and directories
- * @param[out] outList a pointer to vector of dirent
- * @param[in] filter an optional filter to filter out specific items
- * @param[in] sort an optional sorting function
- * @return the amount of items that were stored in "output" or -1 when an error occurred
- */
-int scandir(
-    const std::string& path,
-    std::vector<dirent>& outList,
-    ScandirFilter _Nullable filter,
-    ScandirSort _Nullable sort
-);
-
-bool isSupportedExecutableFile(const std::string& filename);
-bool isSupportedImageFile(const std::string& filename);
-bool isSupportedTextFile(const std::string& filename);
-
-} // namespace
--- a/Tactility/Private/Tactility/app/fileselection/FileSelectionPrivate.h
+++ b/Tactility/Private/Tactility/app/fileselection/FileSelectionPrivate.h
@ -0,0 +1,14 @@
+#pragma once
+
+#include <Tactility/Bundle.h>
+
+namespace tt::app::fileselection {
+
+enum class Mode {
+    Existing = 0,
+    ExistingOrNew = 1
+};
+
+Mode getMode(const Bundle& bundle);
+
+}
--- a/Tactility/Private/Tactility/app/fileselection/State.h
+++ b/Tactility/Private/Tactility/app/fileselection/State.h
@ -0,0 +1,59 @@
+#pragma once
+
+#include <Tactility/Mutex.h>
+
+#include <string>
+#include <vector>
+#include <dirent.h>
+
+namespace tt::app::fileselection {
+
+class State {
+
+    Mutex mutex = Mutex(Mutex::Type::Recursive);
+    std::vector<dirent> dir_entries;
+    std::string current_path;
+    std::string selected_child_entry;
+
+public:
+
+    State();
+
+    void freeEntries() {
+        dir_entries.clear();
+    }
+
+    ~State() {
+        freeEntries();
+    }
+
+    bool setEntriesForChildPath(const std::string& child_path);
+    bool setEntriesForPath(const std::string& path);
+
+    template <std::invocable<const std::vector<dirent> &> Func>
+    void withEntries(Func&& onEntries) const {
+        mutex.withLock([&]() {
+            std::invoke(std::forward<Func>(onEntries), dir_entries);
+        });
+    }
+
+    bool getDirent(uint32_t index, dirent& dirent);
+
+    void setSelectedChildEntry(const std::string& newFile) {
+        selected_child_entry = newFile;
+    }
+
+    std::string getSelectedChildEntry() const { return selected_child_entry; }
+    std::string getCurrentPath() const { return current_path; }
+    std::string getCurrentPathWithTrailingSlash() const {
+        if (current_path.length() > 1) {
+            return current_path + "/";
+        } else {
+            return current_path;
+        }
+    }
+
+    std::string getSelectedChildPath() const;
+};
+
+}
--- a/Tactility/Private/Tactility/app/fileselection/View.h
+++ b/Tactility/Private/Tactility/app/fileselection/View.h
@ -0,0 +1,44 @@
+#pragma once
+
+#include "./State.h"
+#include "./FileSelectionPrivate.h"
+
+#include "Tactility/app/AppManifest.h"
+
+#include <lvgl.h>
+#include <memory>
+
+namespace tt::app::fileselection {
+
+class View {
+    std::shared_ptr<State> state;
+
+    lv_obj_t* dir_entry_list = nullptr;
+    lv_obj_t* navigate_up_button = nullptr;
+    lv_obj_t* path_textarea = nullptr;
+    lv_obj_t* select_button = nullptr;
+    std::function<void(std::string path)> on_file_selected;
+
+    void onTapFile(const std::string&path, const std::string&filename);
+    static void onSelectButtonPressed(lv_event_t* event);
+    static void onPathTextChanged(lv_event_t* event);
+    void createDirEntryWidget(lv_obj_t* parent, dirent& dir_entry);
+
+public:
+
+    explicit View(const std::shared_ptr<State>& state, std::function<void(const std::string& path)> onFileSelected) :
+        state(state),
+        on_file_selected(std::move(onFileSelected))
+    {}
+
+    void init(lv_obj_t* parent, Mode mode);
+    void update();
+
+    void onNavigateUpPressed();
+    void onDirEntryPressed(uint32_t index);
+    void onFileSelected(const std::string& path) const {
+        on_file_selected(path);
+    }
+};
+
+}
--- a/Tactility/Private/Tactility/app/i2cscanner/I2cScanner.h
+++ b/Tactility/Private/Tactility/app/i2cscanner/I2cScanner.h
@ -1,13 +1,5 @@
 #pragma once

-#include <TactilityCore.h>
-#include <Mutex.h>
-#include <Thread.h>
-#include "lvgl.h"
-#include <Tactility/hal/i2c/I2c.h>
-#include "Timer.h"
-#include <memory>
-
 namespace tt::app::i2cscanner {

 void start();
--- a/Tactility/Source/Tactility.cpp
+++ b/Tactility/Source/Tactility.cpp
@ -37,7 +37,8 @@ namespace app {
    namespace chat { extern const AppManifest manifest; }
    namespace boot { extern const AppManifest manifest; }
    namespace display { extern const AppManifest manifest; }
-    namespace files { extern const AppManifest manifest; }
+    namespace filebrowser { extern const AppManifest manifest; }
+    namespace fileselection { extern const AppManifest manifest; }
    namespace gpio { extern const AppManifest manifest; }
    namespace gpssettings { extern const AppManifest manifest; }
    namespace i2cscanner { extern const AppManifest manifest; }
@ -46,6 +47,7 @@ namespace app {
    namespace inputdialog { extern const AppManifest manifest; }
    namespace launcher { extern const AppManifest manifest; }
    namespace log { extern const AppManifest manifest; }
+    namespace notes { extern const AppManifest manifest; }
    namespace power { extern const AppManifest manifest; }
    namespace selectiondialog { extern const AppManifest manifest; }
    namespace serialconsole { extern const AppManifest manifest; }
@ -77,7 +79,8 @@ static void registerSystemApps() {
    addApp(app::applist::manifest);
    addApp(app::calculator::manifest);
    addApp(app::display::manifest);
-    addApp(app::files::manifest);
+    addApp(app::filebrowser::manifest);
+    addApp(app::fileselection::manifest);
    addApp(app::gpio::manifest);
    addApp(app::gpssettings::manifest);
    addApp(app::i2cscanner::manifest);
@ -86,6 +89,7 @@ static void registerSystemApps() {
    addApp(app::inputdialog::manifest);
    addApp(app::launcher::manifest);
    addApp(app::log::manifest);
+    addApp(app::notes::manifest);
    addApp(app::serialconsole::manifest);
    addApp(app::settings::manifest);
    addApp(app::selectiondialog::manifest);
--- a/Tactility/Source/app/App.cpp
+++ b/Tactility/Source/app/App.cpp
@ -4,19 +4,19 @@

 namespace tt::app {

-void start(const std::string& id, std::shared_ptr<const Bundle> _Nullable parameters) {
-    service::loader::startApp(id, std::move(parameters));
+LaunchId start(const std::string& id, std::shared_ptr<const Bundle> _Nullable parameters) {
+    return service::loader::startApp(id, std::move(parameters));
 }

 void stop() {
    service::loader::stopApp();
 }

-std::shared_ptr<app::AppContext> _Nullable getCurrentAppContext() {
+std::shared_ptr<AppContext> _Nullable getCurrentAppContext() {
    return service::loader::getCurrentAppContext();
 }

-std::shared_ptr<app::App> _Nullable getCurrentApp() {
+std::shared_ptr<App> _Nullable getCurrentApp() {
    return service::loader::getCurrentApp();
 }

--- a/Tactility/Source/app/ElfApp.cpp
+++ b/Tactility/Source/app/ElfApp.cpp
@ -36,8 +36,6 @@ static ElfManifest elfManifest;

 class ElfApp : public App {

-private:
-
    const std::string filePath;
    std::unique_ptr<uint8_t[]> elfFileData;
    esp_elf_t elf;
@ -143,9 +141,9 @@ public:
        }
    }

-    void onResult(AppContext& appContext, Result result, std::unique_ptr<Bundle> resultBundle) override {
+    void onResult(AppContext& appContext, LaunchId launchId, Result result, std::unique_ptr<Bundle> resultBundle) override {
        if (manifest != nullptr && manifest->onResult != nullptr) {
-            manifest->onResult(&appContext, data, result, resultBundle.get());
+            manifest->onResult(&appContext, data, launchId, result, resultBundle.get());
        }
    }
 };
--- a/Tactility/Source/app/addgps/AddGps.cpp
+++ b/Tactility/Source/app/addgps/AddGps.cpp
@ -101,6 +101,8 @@ public:
        lv_dropdown_set_options(uartDropdown, uart_options.c_str());
        lv_obj_align(uartDropdown, LV_ALIGN_TOP_RIGHT, 0, 0);
        lv_obj_set_width(uartDropdown, LV_PCT(50));
+        lv_obj_set_style_border_color(uartDropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+        lv_obj_set_style_border_width(uartDropdown, 1, LV_PART_MAIN);

        auto* uart_label = lv_label_create(uart_wrapper);
        lv_obj_align(uart_label, LV_ALIGN_TOP_LEFT, 0, 10);
@ -121,6 +123,8 @@ public:
        lv_dropdown_set_options(modelDropdown, model_options.c_str());
        lv_obj_align(modelDropdown, LV_ALIGN_TOP_RIGHT, 0, 0);
        lv_obj_set_width(modelDropdown, LV_PCT(50));
+        lv_obj_set_style_border_color(modelDropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+        lv_obj_set_style_border_width(modelDropdown, 1, LV_PART_MAIN);

        auto* model_label = lv_label_create(model_wrapper);
        lv_obj_align(model_label, LV_ALIGN_TOP_LEFT, 0, 10);
@ -139,6 +143,8 @@ public:
        lv_dropdown_set_options(baudDropdown, baudRatesDropdownValues);
        lv_obj_align(baudDropdown, LV_ALIGN_TOP_RIGHT, 0, 0);
        lv_obj_set_width(baudDropdown, LV_PCT(50));
+        lv_obj_set_style_border_color(baudDropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+        lv_obj_set_style_border_width(baudDropdown, 1, LV_PART_MAIN);

        auto* baud_rate_label = lv_label_create(baud_wrapper);
        lv_obj_align(baud_rate_label, LV_ALIGN_TOP_LEFT, 0, 10);
--- a/Tactility/Source/app/calculator/Calculator.cpp
+++ b/Tactility/Source/app/calculator/Calculator.cpp
@ -1,5 +1,6 @@
 #include <Tactility/app/AppManifest.h>
 #include <Tactility/lvgl/Toolbar.h>
+#include <Tactility/Assets.h>
 #include <cstdlib>
 #include <cstring>
 #include <lvgl.h>
@ -208,6 +209,7 @@ class CalculatorApp : public App {
        lv_obj_set_style_pad_row(btnm, 10, LV_PART_MAIN);
        lv_obj_set_style_pad_column(btnm, 5, LV_PART_MAIN);
        lv_obj_set_style_border_width(btnm, 0, LV_PART_MAIN);
+        lv_obj_set_style_bg_color(btnm, lv_palette_main(LV_PALETTE_BLUE), LV_PART_ITEMS);

        lv_obj_set_style_border_width(btnm, 0, LV_PART_MAIN);
        if (lv_display_get_horizontal_resolution(nullptr) <= 240 || lv_display_get_vertical_resolution(nullptr) <= 240) { //small screens
@ -224,6 +226,7 @@ class CalculatorApp : public App {
 extern const AppManifest manifest = {
    .id = "Calculator",
    .name = "Calculator",
+    .icon = TT_ASSETS_APP_ICON_CALCULATOR,
    .createApp = create<CalculatorApp>
 };

--- a/Tactility/Source/app/chat/ChatApp.cpp
+++ b/Tactility/Source/app/chat/ChatApp.cpp
@ -2,6 +2,7 @@

 #include <Tactility/app/AppManifest.h>
 #include <Tactility/lvgl/Toolbar.h>
+#include <Tactility/Assets.h>
 #include <Tactility/service/espnow/EspNow.h>

 #include "Tactility/service/gui/Gui.h"
@ -115,7 +116,7 @@ public:
        msg_list = lv_list_create(parent);
        lv_obj_set_size(msg_list, lv_pct(75), lv_pct(43));
        lv_obj_align(msg_list, LV_ALIGN_TOP_LEFT, 5, toolbar_height + 45);
-        lv_obj_set_style_bg_color(msg_list, lv_color_hex(0xEEEEEE), 0);
+        lv_obj_set_style_bg_color(msg_list, lv_color_hex(0x262626), 0);
        lv_obj_set_style_border_width(msg_list, 1, 0);
        lv_obj_set_style_pad_all(msg_list, 5, 0);

@ -171,6 +172,7 @@ public:
 extern const AppManifest manifest = {
    .id = "Chat",
    .name = "Chat",
+    .icon = TT_ASSETS_APP_ICON_CHAT,
    .createApp = create<ChatApp>
 };

--- a/Tactility/Source/app/display/Display.cpp
+++ b/Tactility/Source/app/display/Display.cpp
@ -22,80 +22,85 @@ static uint8_t gamma = 255;
 #define ROTATION_270 2
 #define ROTATION_90 3

-static std::shared_ptr<tt::hal::display::DisplayDevice> getHalDisplay() {
+static std::shared_ptr<hal::display::DisplayDevice> getHalDisplay() {
    return hal::findFirstDevice<hal::display::DisplayDevice>(hal::Device::Type::Display);
 }

-static void onBacklightSliderEvent(lv_event_t* event) {
-    auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
-
-    auto hal_display = getHalDisplay();
-    assert(hal_display != nullptr);
-
-    if (hal_display->supportsBacklightDuty()) {
-        int32_t slider_value = lv_slider_get_value(slider);
-
-        backlight_duty = (uint8_t)slider_value;
-        backlight_duty_set = true;
-
-        hal_display->setBacklightDuty(backlight_duty);
-    }
-}
-
-static void onGammaSliderEvent(lv_event_t* event) {
-    auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
-    auto* lvgl_display = lv_display_get_default();
-    assert(lvgl_display != nullptr);
-    auto* hal_display = (tt::hal::display::DisplayDevice*)lv_display_get_user_data(lvgl_display);
-    assert(hal_display != nullptr);
-
-    if (hal_display->getGammaCurveCount() > 0) {
-        int32_t slider_value = lv_slider_get_value(slider);
-
-        gamma = (uint8_t)slider_value;
-
-        hal_display->setGammaCurve(gamma);
-        tt::app::display::setGammaCurve(gamma);
-    }
-}
-
 static lv_display_rotation_t orientationSettingToDisplayRotation(uint32_t setting) {
-    if (setting == ROTATION_180) {
-        return LV_DISPLAY_ROTATION_180;
-    } else if (setting == ROTATION_270) {
-        return LV_DISPLAY_ROTATION_270;
-    } else if (setting == ROTATION_90) {
-        return LV_DISPLAY_ROTATION_90;
-    } else {
-        return LV_DISPLAY_ROTATION_0;
+    switch (setting) {
+        case ROTATION_180:
+            return LV_DISPLAY_ROTATION_180;
+        case ROTATION_270:
+            return LV_DISPLAY_ROTATION_270;
+        case ROTATION_90:
+            return LV_DISPLAY_ROTATION_90;
+        default:
+            return LV_DISPLAY_ROTATION_0;
    }
 }

-static uint32_t dipslayOrientationToOrientationSetting(lv_display_rotation_t orientation) {
-    if (orientation == LV_DISPLAY_ROTATION_90) {
-        return ROTATION_90;
-    } else if (orientation == LV_DISPLAY_ROTATION_180) {
-        return ROTATION_180;
-    } else if (orientation == LV_DISPLAY_ROTATION_270) {
-        return ROTATION_270;
-    } else {
-        return ROTATION_DEFAULT;
-    }
-}
-
-static void onOrientationSet(lv_event_t* event) {
-    auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
-    uint32_t selected = lv_dropdown_get_selected(dropdown);
-    TT_LOG_I(TAG, "Selected %ld", selected);
-    lv_display_rotation_t rotation = orientationSettingToDisplayRotation(selected);
-    if (lv_display_get_rotation(lv_display_get_default()) != rotation) {
-        lv_display_set_rotation(lv_display_get_default(), rotation);
-        setRotation(rotation);
+static uint32_t displayOrientationToOrientationSetting(lv_display_rotation_t orientation) {
+    switch (orientation) {
+        case LV_DISPLAY_ROTATION_90:
+            return ROTATION_90;
+        case LV_DISPLAY_ROTATION_180:
+            return ROTATION_180;
+        case LV_DISPLAY_ROTATION_270:
+            return ROTATION_270;
+        default:
+            return ROTATION_DEFAULT;
    }
 }

 class DisplayApp : public App {

+    static void onBacklightSliderEvent(lv_event_t* event) {
+        auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
+
+        auto hal_display = getHalDisplay();
+        assert(hal_display != nullptr);
+
+        if (hal_display->supportsBacklightDuty()) {
+            int32_t slider_value = lv_slider_get_value(slider);
+
+            backlight_duty = static_cast<uint8_t>(slider_value);
+            backlight_duty_set = true;
+
+            hal_display->setBacklightDuty(backlight_duty);
+        }
+    }
+
+    static void onGammaSliderEvent(lv_event_t* event) {
+        auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
+        auto* lvgl_display = lv_display_get_default();
+        assert(lvgl_display != nullptr);
+        auto* hal_display = static_cast<hal::display::DisplayDevice*>(lv_display_get_user_data(lvgl_display));
+        assert(hal_display != nullptr);
+
+        if (hal_display->getGammaCurveCount() > 0) {
+            int32_t slider_value = lv_slider_get_value(slider);
+
+            gamma = static_cast<uint8_t>(slider_value);
+
+            hal_display->setGammaCurve(gamma);
+            setGammaCurve(gamma);
+        }
+    }
+
+
+    static void onOrientationSet(lv_event_t* event) {
+        auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
+        uint32_t selected = lv_dropdown_get_selected(dropdown);
+        TT_LOG_I(TAG, "Selected %ld", selected);
+        lv_display_rotation_t rotation = orientationSettingToDisplayRotation(selected);
+        if (lv_display_get_rotation(lv_display_get_default()) != rotation) {
+            lv_display_set_rotation(lv_display_get_default(), rotation);
+            setRotation(rotation);
+        }
+    }
+
+public:
+
    void onShow(AppContext& app, lv_obj_t* parent) override {
        lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);

@ -109,34 +114,22 @@ class DisplayApp : public App {
        lv_obj_set_width(main_wrapper, LV_PCT(100));
        lv_obj_set_flex_grow(main_wrapper, 1);

-        auto* wrapper = lv_obj_create(main_wrapper);
-        lv_obj_set_width(wrapper, LV_PCT(100));
-        lv_obj_set_style_pad_all(wrapper, 8, 0);
-        lv_obj_set_style_border_width(wrapper, 0, 0);
+        if (hal_display->supportsBacklightDuty()) {
+            auto* brightness_wrapper = lv_obj_create(main_wrapper);
+            lv_obj_set_size(brightness_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
+            lv_obj_set_style_pad_hor(brightness_wrapper, 0, 0);
+            lv_obj_set_style_pad_ver(brightness_wrapper, 6, 0);
+            lv_obj_set_style_border_width(brightness_wrapper, 0, 0);

-        auto* brightness_label = lv_label_create(wrapper);
-        lv_label_set_text(brightness_label, "Brightness");
+            auto* brightness_label = lv_label_create(brightness_wrapper);
+            lv_label_set_text(brightness_label, "Brightness");

-        auto* brightness_slider = lv_slider_create(wrapper);
-        lv_obj_set_width(brightness_slider, LV_PCT(50));
-        lv_obj_align(brightness_slider, LV_ALIGN_TOP_RIGHT, -8, 0);
-        lv_slider_set_range(brightness_slider, 0, 255);
-        lv_obj_add_event_cb(brightness_slider, onBacklightSliderEvent, LV_EVENT_VALUE_CHANGED, nullptr);
+            auto* brightness_slider = lv_slider_create(brightness_wrapper);
+            lv_obj_set_width(brightness_slider, LV_PCT(50));
+            lv_obj_align(brightness_slider, LV_ALIGN_TOP_RIGHT, -8, 0);
+            lv_slider_set_range(brightness_slider, 0, 255);
+            lv_obj_add_event_cb(brightness_slider, onBacklightSliderEvent, LV_EVENT_VALUE_CHANGED, nullptr);

-        auto* gamma_label = lv_label_create(wrapper);
-        lv_label_set_text(gamma_label, "Gamma");
-        lv_obj_set_y(gamma_label, 40);
-
-        auto* gamma_slider = lv_slider_create(wrapper);
-        lv_obj_set_width(gamma_slider, LV_PCT(50));
-        lv_obj_align(gamma_slider, LV_ALIGN_TOP_RIGHT, -8, 40);
-        lv_slider_set_range(gamma_slider, 0, hal_display->getGammaCurveCount());
-        lv_obj_add_event_cb(gamma_slider, onGammaSliderEvent, LV_EVENT_VALUE_CHANGED, nullptr);
-
-        if (!hal_display->supportsBacklightDuty()) {
-            lv_slider_set_value(brightness_slider, 255, LV_ANIM_OFF);
-            lv_obj_add_state(brightness_slider, LV_STATE_DISABLED);
-        } else {
            uint8_t value;
            if (getBacklightDuty(value)) {
                lv_slider_set_value(brightness_slider, value, LV_ANIM_OFF);
@ -145,10 +138,23 @@ class DisplayApp : public App {
            }
        }

-        if (hal_display->getGammaCurveCount() == 0) {
-            lv_slider_set_value(gamma_slider, 0, LV_ANIM_OFF);
-            lv_obj_add_state(gamma_slider, LV_STATE_DISABLED);
-        } else {
+        if (hal_display->getGammaCurveCount() > 0) {
+            auto* gamma_wrapper = lv_obj_create(main_wrapper);
+            lv_obj_set_size(gamma_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
+            lv_obj_set_style_pad_hor(gamma_wrapper, 0, 0);
+            lv_obj_set_style_pad_ver(gamma_wrapper, 6, 0);
+            lv_obj_set_style_border_width(gamma_wrapper, 0, 0);
+
+            auto* gamma_label = lv_label_create(gamma_wrapper);
+            lv_label_set_text(gamma_label, "Gamma");
+            lv_obj_set_y(gamma_label, 0);
+
+            auto* gamma_slider = lv_slider_create(gamma_wrapper);
+            lv_obj_set_width(gamma_slider, LV_PCT(50));
+            lv_obj_align(gamma_slider, LV_ALIGN_TOP_RIGHT, -8, 0);
+            lv_slider_set_range(gamma_slider, 0, hal_display->getGammaCurveCount());
+            lv_obj_add_event_cb(gamma_slider, onGammaSliderEvent, LV_EVENT_VALUE_CHANGED, nullptr);
+
            uint8_t curve_index;
            if (getGammaCurve(curve_index)) {
                lv_slider_set_value(gamma_slider, curve_index, LV_ANIM_OFF);
@ -157,25 +163,32 @@ class DisplayApp : public App {
            }
        }

-        auto* orientation_label = lv_label_create(wrapper);
+        auto* orientation_wrapper = lv_obj_create(main_wrapper);
+        lv_obj_set_size(orientation_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
+        lv_obj_set_style_pad_all(orientation_wrapper, 0, 0);
+        lv_obj_set_style_border_width(orientation_wrapper, 0, 0);
+
+        auto* orientation_label = lv_label_create(orientation_wrapper);
        lv_label_set_text(orientation_label, "Orientation");
-        lv_obj_align(orientation_label, LV_ALIGN_TOP_LEFT, 0, 80);
+        lv_obj_align(orientation_label, LV_ALIGN_TOP_LEFT, 0, 8);

        auto lvgl_display = lv_obj_get_display(parent);
        auto horizontal_px = lv_display_get_horizontal_resolution(lvgl_display);
        auto vertical_px = lv_display_get_vertical_resolution(lvgl_display);
        bool is_landscape_display = horizontal_px > vertical_px;

-        auto* orientation_dropdown = lv_dropdown_create(wrapper);
+        auto* orientation_dropdown = lv_dropdown_create(orientation_wrapper);
        if (is_landscape_display) {
            lv_dropdown_set_options(orientation_dropdown, "Landscape\nLandscape (flipped)\nPortrait Left\nPortrait Right");
        } else {
            lv_dropdown_set_options(orientation_dropdown, "Portrait\nPortrait (flipped)\nLandscape Left\nLandscape Right");
        }

-        lv_obj_align(orientation_dropdown, LV_ALIGN_TOP_RIGHT, 0, 72);
+        lv_obj_align(orientation_dropdown, LV_ALIGN_TOP_RIGHT, 0, 0);
+        lv_obj_set_style_border_color(orientation_dropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+        lv_obj_set_style_border_width(orientation_dropdown, 1, LV_PART_MAIN);
        lv_obj_add_event_cb(orientation_dropdown, onOrientationSet, LV_EVENT_VALUE_CHANGED, nullptr);
-        uint32_t orientation_selected = dipslayOrientationToOrientationSetting(
+        uint32_t orientation_selected = displayOrientationToOrientationSetting(
            lv_display_get_rotation(lv_display_get_default())
        );
        lv_dropdown_set_selected(orientation_dropdown, orientation_selected);
--- a/Tactility/Source/app/filebrowser/FileBrowser.cpp
+++ b/Tactility/Source/app/filebrowser/FileBrowser.cpp
@ -1,5 +1,5 @@
-#include "Tactility/app/files/View.h"
-#include "Tactility/app/files/State.h"
+#include "Tactility/app/filebrowser/View.h"
+#include "Tactility/app/filebrowser/State.h"
 #include "Tactility/app/AppContext.h"

 #include <Tactility/Assets.h>
@ -7,18 +7,18 @@

 #include <memory>

-namespace tt::app::files {
+namespace tt::app::filebrowser {

-#define TAG "files_app"
+#define TAG "filebrowser_app"

 extern const AppManifest manifest;

-class FilesApp : public App {
+class FileBrowser : public App {
    std::unique_ptr<View> view;
    std::shared_ptr<State> state;

 public:
-    FilesApp() {
+    FileBrowser() {
        state = std::make_shared<State>();
        view = std::make_unique<View>(state);
    }
@ -27,7 +27,7 @@ public:
        view->init(parent);
    }

-    void onResult(AppContext& appContext, Result result, std::unique_ptr<Bundle> bundle) override {
+    void onResult(AppContext& appContext, TT_UNUSED LaunchId launchId, Result result, std::unique_ptr<Bundle> bundle) override {
        view->onResult(result, std::move(bundle));
    }
 };
@ -37,7 +37,7 @@ extern const AppManifest manifest = {
    .name = "Files",
    .icon = TT_ASSETS_APP_ICON_FILES,
    .type = Type::Hidden,
-    .createApp = create<FilesApp>
+    .createApp = create<FileBrowser>
 };

 void start() {
--- a/Tactility/Source/app/filebrowser/State.cpp
+++ b/Tactility/Source/app/filebrowser/State.cpp
@ -1,6 +1,6 @@
-#include "Tactility/app/files/State.h"
-#include "Tactility/app/files/FileUtils.h"
+#include "Tactility/app/filebrowser/State.h"

+#include <Tactility/file/File.h>
 #include "Tactility/hal/sdcard/SdCardDevice.h"
 #include <Tactility/Log.h>
 #include <Tactility/Partitions.h>
@ -11,9 +11,9 @@
 #include <vector>
 #include <dirent.h>

-#define TAG "files_app"
+#define TAG "filebrowser_app"

-namespace tt::app::files {
+namespace tt::app::filebrowser {

 State::State() {
    if (kernel::getPlatform() == kernel::PlatformSimulator) {
@ -30,7 +30,7 @@ State::State() {
 }

 std::string State::getSelectedChildPath() const {
-    return getChildPath(current_path, selected_child_entry);
+    return file::getChildPath(current_path, selected_child_entry);
 }

 bool State::setEntriesForPath(const std::string& path) {
@ -52,12 +52,12 @@ bool State::setEntriesForPath(const std::string& path) {
        dir_entries.clear();
        dir_entries.push_back(dirent{
            .d_ino = 0,
-            .d_type = TT_DT_DIR,
+            .d_type = file::TT_DT_DIR,
            .d_name = SYSTEM_PARTITION_NAME
        });
        dir_entries.push_back(dirent{
            .d_ino = 1,
-            .d_type = TT_DT_DIR,
+            .d_type = file::TT_DT_DIR,
            .d_name = DATA_PARTITION_NAME
        });

@ -68,7 +68,7 @@ bool State::setEntriesForPath(const std::string& path) {
                auto mount_name = sdcard->getMountPath().substr(1);
                auto dir_entry = dirent {
                    .d_ino = 2,
-                    .d_type = TT_DT_DIR,
+                    .d_type = file::TT_DT_DIR,
                    .d_name = { 0 }
                };
                assert(mount_name.length() < sizeof(dirent::d_name));
@ -83,7 +83,7 @@ bool State::setEntriesForPath(const std::string& path) {
        return true;
    } else {
        dir_entries.clear();
-        int count = tt::app::files::scandir(path, dir_entries, &dirent_filter_dot_entries, dirent_sort_alpha_and_type);
+        int count = file::scandir(path, dir_entries, &file::direntFilterDotEntries, file::direntSortAlphaAndType);
        if (count >= 0) {
            TT_LOG_I(TAG, "%s has %u entries", path.c_str(), count);
            current_path = path;
@ -97,8 +97,8 @@ bool State::setEntriesForPath(const std::string& path) {
    }
 }

-bool State::setEntriesForChildPath(const std::string& child_path) {
-    auto path = getChildPath(current_path, child_path);
+bool State::setEntriesForChildPath(const std::string& childPath) {
+    auto path = file::getChildPath(current_path, childPath);
    TT_LOG_I(TAG, "Navigating from %s to %s", current_path.c_str(), path.c_str());
    return setEntriesForPath(path);
 }
--- a/Tactility/Source/app/filebrowser/SupportedFiles.cpp
+++ b/Tactility/Source/app/filebrowser/SupportedFiles.cpp
@ -0,0 +1,34 @@
+#include <Tactility/StringUtils.h>
+#include <Tactility/TactilityCore.h>
+
+namespace tt::app::filebrowser {
+
+#define TAG "filebrowser_app"
+
+bool isSupportedExecutableFile(const std::string& filename) {
+#ifdef ESP_PLATFORM
+    // Currently only the PNG library is built into Tactility
+    return filename.ends_with(".elf");
+#else
+    return false;
+#endif
+}
+
+bool isSupportedImageFile(const std::string& filename) {
+    // Currently only the PNG library is built into Tactility
+    return string::lowercase(filename).ends_with(".png");
+}
+
+bool isSupportedTextFile(const std::string& filename) {
+    std::string filename_lower = string::lowercase(filename);
+    return filename_lower.ends_with(".txt") ||
+        filename_lower.ends_with(".ini") ||
+        filename_lower.ends_with(".json") ||
+        filename_lower.ends_with(".yaml") ||
+        filename_lower.ends_with(".yml") ||
+        filename_lower.ends_with(".lua") ||
+        filename_lower.ends_with(".js") ||
+        filename_lower.ends_with(".properties");
+}
+
+} // namespace tt::app::filebrowser
--- a/Tactility/Source/app/filebrowser/View.cpp
+++ b/Tactility/Source/app/filebrowser/View.cpp
@ -1,5 +1,5 @@
-#include "Tactility/app/files/FileUtils.h"
-#include "Tactility/app/files/View.h"
+#include "Tactility/app/filebrowser/View.h"
+#include "Tactility/app/filebrowser/SupportedFiles.h"

 #include "Tactility/app/alertdialog/AlertDialog.h"
 #include "Tactility/app/imageviewer/ImageViewer.h"
@ -10,6 +10,7 @@
 #include "Tactility/lvgl/LvglSync.h"

 #include <Tactility/Tactility.h>
+#include "Tactility/file/File.h"
 #include <Tactility/StringUtils.h>

 #include <cstring>
@ -19,43 +20,43 @@
 #include "Tactility/service/loader/Loader.h"
 #endif

-#define TAG "files_app"
+#define TAG "filebrowser_app"

-namespace tt::app::files {
+namespace tt::app::filebrowser {

 // region Callbacks

 static void dirEntryListScrollBeginCallback(lv_event_t* event) {
-    auto* view = (View*)lv_event_get_user_data(event);
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
    view->onDirEntryListScrollBegin();
 }

 static void onDirEntryPressedCallback(lv_event_t* event) {
-    auto* view = (View*)lv_event_get_user_data(event);
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
    auto* button = lv_event_get_target_obj(event);
    auto index = lv_obj_get_index(button);
    view->onDirEntryPressed(index);
 }

 static void onDirEntryLongPressedCallback(lv_event_t* event) {
-    auto* view = (View*)lv_event_get_user_data(event);
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
    auto* button = lv_event_get_target_obj(event);
    auto index = lv_obj_get_index(button);
    view->onDirEntryLongPressed(index);
 }

 static void onRenamePressedCallback(lv_event_t* event) {
-    auto* view = (View*)lv_event_get_user_data(event);
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
    view->onRenamePressed();
 }

 static void onDeletePressedCallback(lv_event_t* event) {
-    auto* view = (View*)lv_event_get_user_data(event);
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
    view->onDeletePressed();
 }

 static void onNavigateUpPressedCallback(TT_UNUSED lv_event_t* event) {
-    auto* view = (View*)lv_event_get_user_data(event);
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
    view->onNavigateUpPressed();
 }

@ -86,18 +87,18 @@ void View::viewFile(const std::string& path, const std::string& filename) {

    if (isSupportedExecutableFile(filename)) {
 #ifdef ESP_PLATFORM
-        app::registerElfApp(processed_filepath);
-        auto app_id = app::getElfAppId(processed_filepath);
+        registerElfApp(processed_filepath);
+        auto app_id = getElfAppId(processed_filepath);
        service::loader::startApp(app_id);
 #endif
    } else if (isSupportedImageFile(filename)) {
-        app::imageviewer::start(processed_filepath);
+        imageviewer::start(processed_filepath);
    } else if (isSupportedTextFile(filename)) {
        if (kernel::getPlatform() == kernel::PlatformEsp) {
-            app::textviewer::start(processed_filepath);
+            textviewer::start(processed_filepath);
        } else {
            // Remove forward slash, because we need a relative path
-            app::textviewer::start(processed_filepath.substr(1));
+            textviewer::start(processed_filepath.substr(1));
        }
    } else {
        TT_LOG_W(TAG, "opening files of this type is not supported");
@ -111,6 +112,7 @@ void View::onDirEntryPressed(uint32_t index) {
    if (state->getDirent(index, dir_entry)) {
        TT_LOG_I(TAG, "Pressed %s %d", dir_entry.d_name, dir_entry.d_type);
        state->setSelectedChildEntry(dir_entry.d_name);
+        using namespace tt::file;
        switch (dir_entry.d_type) {
            case TT_DT_DIR:
            case TT_DT_CHR:
@ -140,6 +142,7 @@ void View::onDirEntryLongPressed(int32_t index) {
    if (state->getDirent(index, dir_entry)) {
        TT_LOG_I(TAG, "Pressed %s %d", dir_entry.d_name, dir_entry.d_type);
        state->setSelectedChildEntry(dir_entry.d_name);
+        using namespace file;
        switch (dir_entry.d_type) {
            case TT_DT_DIR:
            case TT_DT_CHR:
@ -161,15 +164,14 @@ void View::onDirEntryLongPressed(int32_t index) {
 }


-void View::createDirEntryWidget(lv_obj_t* parent, struct dirent& dir_entry) {
-    tt_check(parent);
-    auto* list = (lv_obj_t*)parent;
+void View::createDirEntryWidget(lv_obj_t* list, dirent& dir_entry) {
+    tt_check(list);
    const char* symbol;
-    if (dir_entry.d_type == TT_DT_DIR || dir_entry.d_type == TT_DT_CHR) {
+    if (dir_entry.d_type == file::TT_DT_DIR || dir_entry.d_type == file::TT_DT_CHR) {
        symbol = LV_SYMBOL_DIRECTORY;
    } else if (isSupportedImageFile(dir_entry.d_name)) {
        symbol = LV_SYMBOL_IMAGE;
-    } else if (dir_entry.d_type == TT_DT_LNK) {
+    } else if (dir_entry.d_type == file::TT_DT_LNK) {
        symbol = LV_SYMBOL_LOOP;
    } else {
        symbol = LV_SYMBOL_FILE;
@ -195,7 +197,7 @@ void View::onRenamePressed() {
    std::string entry_name = state->getSelectedChildEntry();
    TT_LOG_I(TAG, "Pending rename %s", entry_name.c_str());
    state->setPendingAction(State::ActionRename);
-    app::inputdialog::start("Rename", "", entry_name);
+    inputdialog::start("Rename", "", entry_name);
 }

 void View::onDeletePressed() {
@ -204,7 +206,7 @@ void View::onDeletePressed() {
    state->setPendingAction(State::ActionDelete);
    std::string message = "Do you want to delete this?\n" + file_path;
    const std::vector<std::string> choices = { "Yes", "No" };
-    app::alertdialog::start("Are you sure?", message, choices);
+    alertdialog::start("Are you sure?", message, choices);
 }

 void View::showActionsForDirectory() {
@ -301,7 +303,7 @@ void View::onResult(Result result, std::unique_ptr<Bundle> bundle) {
    switch (state->getPendingAction()) {
        case State::ActionDelete: {
            if (alertdialog::getResultIndex(*bundle) == 0) {
-                int delete_count = (int)remove(filepath.c_str());
+                int delete_count = remove(filepath.c_str());
                if (delete_count > 0) {
                    TT_LOG_I(TAG, "Deleted %d items", delete_count);
                } else {
@ -313,9 +315,9 @@ void View::onResult(Result result, std::unique_ptr<Bundle> bundle) {
            break;
        }
        case State::ActionRename: {
-            auto new_name = app::inputdialog::getResult(*bundle);
+            auto new_name = inputdialog::getResult(*bundle);
            if (!new_name.empty() && new_name != state->getSelectedChildEntry()) {
-                std::string rename_to = getChildPath(state->getCurrentPath(), new_name);
+                std::string rename_to = file::getChildPath(state->getCurrentPath(), new_name);
                if (rename(filepath.c_str(), rename_to.c_str())) {
                    TT_LOG_I(TAG, "Renamed \"%s\" to \"%s\"", filepath.c_str(), rename_to.c_str());
                } else {
--- a/Tactility/Source/app/files/FileUtils.cpp
+++ b/Tactility/Source/app/files/FileUtils.cpp
@ -1,91 +0,0 @@
-#include "Tactility/app/files/FileUtils.h"
-
-#include <Tactility/StringUtils.h>
-#include <Tactility/TactilityCore.h>
-
-#include <cstring>
-
-namespace tt::app::files {
-
-#define TAG "file_utils"
-
-std::string getChildPath(const std::string& basePath, const std::string& childPath) {
-    // Postfix with "/" when the current path isn't "/"
-    if (basePath.length() != 1) {
-        return basePath + "/" + childPath;
-    } else {
-        return "/" + childPath;
-    }
-}
-
-int dirent_filter_dot_entries(const struct dirent* entry) {
-    return (strcmp(entry->d_name, "..") == 0 || strcmp(entry->d_name, ".") == 0) ? -1 : 0;
-}
-
-bool dirent_sort_alpha_and_type(const struct dirent& left, const struct dirent& right) {
-    bool left_is_dir = left.d_type == TT_DT_DIR || left.d_type == TT_DT_CHR;
-    bool right_is_dir = right.d_type == TT_DT_DIR || right.d_type == TT_DT_CHR;
-    if (left_is_dir == right_is_dir) {
-        return strcmp(left.d_name, right.d_name) < 0;
-    } else {
-        return left_is_dir > right_is_dir;
-    }
-}
-
-int scandir(
-    const std::string& path,
-    std::vector<dirent>& outList,
-    ScandirFilter _Nullable filterMethod,
-    ScandirSort _Nullable sortMethod
-) {
-    TT_LOG_I(TAG, "scandir start");
-    DIR* dir = opendir(path.c_str());
-    if (dir == nullptr) {
-        TT_LOG_E(TAG, "Failed to open dir %s", path.c_str());
-        return -1;
-    }
-
-    struct dirent* current_entry;
-    while ((current_entry = readdir(dir)) != nullptr) {
-        if (filterMethod(current_entry) == 0) {
-            outList.push_back(*current_entry);
-        }
-    }
-
-    closedir(dir);
-
-    if (sortMethod != nullptr) {
-        sort(outList.begin(), outList.end(), sortMethod);
-    }
-
-    TT_LOG_I(TAG, "scandir finish");
-    return (int)outList.size();
-};
-
-bool isSupportedExecutableFile(const std::string& filename) {
-#ifdef ESP_PLATFORM
-    // Currently only the PNG library is built into Tactility
-    return filename.ends_with(".elf");
-#else
-    return false;
-#endif
-}
-
-bool isSupportedImageFile(const std::string& filename) {
-    // Currently only the PNG library is built into Tactility
-    return string::lowercase(filename).ends_with(".png");
-}
-
-bool isSupportedTextFile(const std::string& filename) {
-    std::string filename_lower = string::lowercase(filename);
-    return filename_lower.ends_with(".txt") ||
-        filename_lower.ends_with(".ini") ||
-        filename_lower.ends_with(".json") ||
-        filename_lower.ends_with(".yaml") ||
-        filename_lower.ends_with(".yml") ||
-        filename_lower.ends_with(".lua") ||
-        filename_lower.ends_with(".js") ||
-        filename_lower.ends_with(".properties");
-}
-
-} // namespace tt::app::files
--- a/Tactility/Source/app/fileselection/FileSelection.cpp
+++ b/Tactility/Source/app/fileselection/FileSelection.cpp
@ -0,0 +1,78 @@
+#include "Tactility/app/fileselection/FileSelectionPrivate.h"
+#include "Tactility/app/fileselection/View.h"
+#include "Tactility/app/fileselection/State.h"
+#include "Tactility/app/AppContext.h"
+
+#include <Tactility/Assets.h>
+#include <Tactility/service/loader/Loader.h>
+
+#include <memory>
+
+namespace tt::app::fileselection {
+
+#define TAG "fileselection_app"
+
+extern const AppManifest manifest;
+
+std::string getResultPath(const Bundle& bundle) {
+    std::string result;
+    if (bundle.optString("path", result)) {
+        return result;
+    } else {
+        return "";
+    }
+}
+
+Mode getMode(const Bundle& bundle) {
+    int32_t mode = static_cast<int32_t>(Mode::ExistingOrNew);
+    bundle.optInt32("mode", mode);
+    return static_cast<Mode>(mode);
+}
+
+void setMode(Bundle& bundle, Mode mode) {
+    auto mode_int = static_cast<int32_t>(mode);
+    bundle.putInt32("mode", mode_int);
+}
+
+class FileSelection : public App {
+    std::unique_ptr<View> view;
+    std::shared_ptr<State> state;
+
+public:
+    FileSelection() {
+        state = std::make_shared<State>();
+        view = std::make_unique<View>(state, [this](const std::string& path) {
+            auto bundle = std::make_unique<Bundle>();
+            bundle->putString("path", path);
+            setResult(Result::Ok, std::move(bundle));
+            service::loader::stopApp();
+        });
+    }
+
+    void onShow(AppContext& appContext, lv_obj_t* parent) override {
+        auto mode = getMode(*appContext.getParameters());
+        view->init(parent, mode);
+    }
+};
+
+extern const AppManifest manifest = {
+    .id = "FileSelection",
+    .name = "File Selection",
+    .icon = TT_ASSETS_APP_ICON_FILES,
+    .type = Type::Hidden,
+    .createApp = create<FileSelection>
+};
+
+LaunchId startForExistingFile() {
+    auto bundle = std::make_shared<Bundle>();
+    setMode(*bundle, Mode::Existing);
+    return service::loader::startApp(manifest.id, bundle);
+}
+
+LaunchId startForExistingOrNewFile() {
+    auto bundle = std::make_shared<Bundle>();
+    setMode(*bundle, Mode::ExistingOrNew);
+    return service::loader::startApp(manifest.id, bundle);
+}
+
+} // namespace
--- a/Tactility/Source/app/fileselection/State.cpp
+++ b/Tactility/Source/app/fileselection/State.cpp
@ -0,0 +1,118 @@
+#include "Tactility/app/fileselection/State.h"
+
+#include <Tactility/file/File.h>
+#include "Tactility/hal/sdcard/SdCardDevice.h"
+#include <Tactility/Log.h>
+#include <Tactility/Partitions.h>
+#include <Tactility/kernel/Kernel.h>
+
+#include <cstring>
+#include <unistd.h>
+#include <vector>
+#include <dirent.h>
+
+#define TAG "fileselection_app"
+
+namespace tt::app::fileselection {
+
+State::State() {
+    if (kernel::getPlatform() == kernel::PlatformSimulator) {
+        char cwd[PATH_MAX];
+        if (getcwd(cwd, sizeof(cwd)) != nullptr) {
+            setEntriesForPath(cwd);
+        } else {
+            TT_LOG_E(TAG, "Failed to get current work directory files");
+            setEntriesForPath("/");
+        }
+    } else {
+        setEntriesForPath("/");
+    }
+}
+
+std::string State::getSelectedChildPath() const {
+    return file::getChildPath(current_path, selected_child_entry);
+}
+
+bool State::setEntriesForPath(const std::string& path) {
+    auto lock = mutex.asScopedLock();
+    if (!lock.lock(100)) {
+        TT_LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED_FMT, "setEntriesForPath");
+        return false;
+    }
+
+    TT_LOG_I(TAG, "Changing path: %s -> %s", current_path.c_str(), path.c_str());
+
+    /**
+     * ESP32 does not have a root directory, so we have to create it manually.
+     * We'll add the NVS Flash partitions and the binding for the sdcard.
+     */
+    bool show_custom_root = (kernel::getPlatform() == kernel::PlatformEsp) && (path == "/");
+    if (show_custom_root) {
+        TT_LOG_I(TAG, "Setting custom root");
+        dir_entries.clear();
+        dir_entries.push_back(dirent{
+            .d_ino = 0,
+            .d_type = file::TT_DT_DIR,
+            .d_name = SYSTEM_PARTITION_NAME
+        });
+        dir_entries.push_back(dirent{
+            .d_ino = 1,
+            .d_type = file::TT_DT_DIR,
+            .d_name = DATA_PARTITION_NAME
+        });
+
+        auto sdcards = tt::hal::findDevices<hal::sdcard::SdCardDevice>(hal::Device::Type::SdCard);
+        for (auto& sdcard : sdcards) {
+            auto state = sdcard->getState();
+            if (state == hal::sdcard::SdCardDevice::State::Mounted) {
+                auto mount_name = sdcard->getMountPath().substr(1);
+                auto dir_entry = dirent {
+                    .d_ino = 2,
+                    .d_type = file::TT_DT_DIR,
+                    .d_name = { 0 }
+                };
+                assert(mount_name.length() < sizeof(dirent::d_name));
+                strcpy(dir_entry.d_name, mount_name.c_str());
+                dir_entries.push_back(dir_entry);
+            }
+        }
+
+        current_path = path;
+        selected_child_entry = "";
+        return true;
+    } else {
+        dir_entries.clear();
+        int count = file::scandir(path, dir_entries, &file::direntFilterDotEntries, file::direntSortAlphaAndType);
+        if (count >= 0) {
+            TT_LOG_I(TAG, "%s has %u entries", path.c_str(), count);
+            current_path = path;
+            selected_child_entry = "";
+            return true;
+        } else {
+            TT_LOG_E(TAG, "Failed to fetch entries for %s", path.c_str());
+            return false;
+        }
+    }
+}
+
+bool State::setEntriesForChildPath(const std::string& childPath) {
+    auto path = file::getChildPath(current_path, childPath);
+    TT_LOG_I(TAG, "Navigating from %s to %s", current_path.c_str(), path.c_str());
+    return setEntriesForPath(path);
+}
+
+bool State::getDirent(uint32_t index, dirent& dirent) {
+    auto lock = mutex.asScopedLock();
+    if (!lock.lock(50 / portTICK_PERIOD_MS)) {
+        return false;
+    }
+
+    if (index < dir_entries.size()) {
+        dirent = dir_entries[index];
+        return true;
+    } else {
+        return false;
+    }
+}
+
+}
--- a/Tactility/Source/app/fileselection/View.cpp
+++ b/Tactility/Source/app/fileselection/View.cpp
@ -0,0 +1,215 @@
+#include "Tactility/app/fileselection/View.h"
+
+#include "Tactility/app/alertdialog/AlertDialog.h"
+#include "Tactility/lvgl/Toolbar.h"
+#include "Tactility/lvgl/LvglSync.h"
+
+#include <Tactility/Tactility.h>
+#include "Tactility/file/File.h"
+#include <Tactility/StringUtils.h>
+
+#include <cstring>
+#include <unistd.h>
+#include <Tactility/service/gui/Gui.h>
+
+#ifdef ESP_PLATFORM
+#include "Tactility/service/loader/Loader.h"
+#endif
+
+#define TAG "fileselection_app"
+
+namespace tt::app::fileselection {
+
+// region Callbacks
+
+static void onDirEntryPressedCallback(lv_event_t* event) {
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
+    auto* button = lv_event_get_target_obj(event);
+    auto index = lv_obj_get_index(button);
+    view->onDirEntryPressed(index);
+}
+
+static void onNavigateUpPressedCallback(TT_UNUSED lv_event_t* event) {
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
+    view->onNavigateUpPressed();
+}
+
+// endregion
+
+void View::onTapFile(const std::string& path, const std::string& filename) {
+    std::string file_path = path + "/" + filename;
+
+    // For PC we need to make the path relative to the current work directory,
+    // because that's how LVGL maps its 'drive letter' to the file system.
+    std::string processed_filepath;
+    if (kernel::getPlatform() == kernel::PlatformSimulator) {
+        char cwd[PATH_MAX];
+        if (getcwd(cwd, sizeof(cwd)) == nullptr) {
+            TT_LOG_E(TAG, "Failed to get current working directory");
+            return;
+        }
+        if (!file_path.starts_with(cwd)) {
+            TT_LOG_E(TAG, "Can only work with files in working directory %s", cwd);
+            return;
+        }
+        processed_filepath = file_path.substr(strlen(cwd));
+    } else {
+        processed_filepath = file_path;
+    }
+
+    TT_LOG_I(TAG, "Clicked %s", processed_filepath.c_str());
+
+    lv_textarea_set_text(path_textarea, processed_filepath.c_str());
+}
+
+void View::onDirEntryPressed(uint32_t index) {
+    dirent dir_entry;
+    if (state->getDirent(index, dir_entry)) {
+        TT_LOG_I(TAG, "Pressed %s %d", dir_entry.d_name, dir_entry.d_type);
+        state->setSelectedChildEntry(dir_entry.d_name);
+        using namespace tt::file;
+        switch (dir_entry.d_type) {
+            case TT_DT_DIR:
+            case TT_DT_CHR:
+                state->setEntriesForChildPath(dir_entry.d_name);
+                lv_textarea_set_text(path_textarea, state->getCurrentPathWithTrailingSlash().c_str());
+                update();
+                break;
+            case TT_DT_LNK:
+                TT_LOG_W(TAG, "opening links is not supported");
+                break;
+            case TT_DT_REG:
+                onTapFile(state->getCurrentPath(), dir_entry.d_name);
+                break;
+            default:
+                // Assume it's a file
+                // TODO: Find a better way to identify a file
+                onTapFile(state->getCurrentPath(), dir_entry.d_name);
+                break;
+        }
+    }
+}
+
+void View::onSelectButtonPressed(lv_event_t* event) {
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
+    const char* path = lv_textarea_get_text(view->path_textarea);
+    if (path == nullptr || strlen(path) == 0) {
+        TT_LOG_W(TAG, "Select pressed, but not path found in textarea");
+        return;
+    }
+
+    view->onFileSelected(std::string(path));
+}
+
+static bool isSelectableFilePath(const char* path) {
+    if (path == nullptr) {
+        return false;
+    }
+
+    auto len = strlen(path);
+    if (len == 0) {
+        return false;
+    }
+
+    return path[len - 1] != '/';
+}
+
+void View::onPathTextChanged(lv_event_t* event) {
+    auto* view = static_cast<View*>(lv_event_get_user_data(event));
+    const char* path = lv_textarea_get_text(view->path_textarea);
+    if (isSelectableFilePath(path)) {
+        lv_obj_remove_flag(view->select_button, LV_OBJ_FLAG_HIDDEN);
+    } else {
+        lv_obj_add_flag(view->select_button, LV_OBJ_FLAG_HIDDEN);
+    }
+}
+
+void View::createDirEntryWidget(lv_obj_t* list, dirent& dir_entry) {
+    tt_check(list);
+    const char* symbol;
+    if (dir_entry.d_type == file::TT_DT_DIR || dir_entry.d_type == file::TT_DT_CHR) {
+        symbol = LV_SYMBOL_DIRECTORY;
+    } else {
+        symbol = LV_SYMBOL_FILE;
+    }
+    lv_obj_t* button = lv_list_add_button(list, symbol, dir_entry.d_name);
+    lv_obj_add_event_cb(button, &onDirEntryPressedCallback, LV_EVENT_SHORT_CLICKED, this);
+}
+
+void View::onNavigateUpPressed() {
+    if (state->getCurrentPath() != "/") {
+        TT_LOG_I(TAG, "Navigating upwards");
+        std::string new_absolute_path;
+        if (string::getPathParent(state->getCurrentPath(), new_absolute_path)) {
+            state->setEntriesForPath(new_absolute_path);
+        }
+        if (new_absolute_path.length() > 1) {
+            lv_textarea_set_text(path_textarea, (new_absolute_path + "/").c_str());
+        } else {
+            lv_textarea_set_text(path_textarea, new_absolute_path.c_str());
+        }
+        update();
+    }
+}
+
+void View::update() {
+    auto scoped_lockable = lvgl::getSyncLock()->asScopedLock();
+    if (scoped_lockable.lock(lvgl::defaultLockTime)) {
+        lv_obj_clean(dir_entry_list);
+
+        state->withEntries([this](const std::vector<dirent>& entries) {
+            for (auto entry : entries) {
+                TT_LOG_D(TAG, "Entry: %s %d", entry.d_name, entry.d_type);
+                createDirEntryWidget(dir_entry_list, entry);
+            }
+        });
+
+        if (state->getCurrentPath() == "/") {
+            lv_obj_add_flag(navigate_up_button, LV_OBJ_FLAG_HIDDEN);
+        } else {
+            lv_obj_remove_flag(navigate_up_button, LV_OBJ_FLAG_HIDDEN);
+        }
+    } else {
+        TT_LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED_FMT, "lvgl");
+    }
+}
+
+void View::init(lv_obj_t* parent, Mode mode) {
+    lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
+
+    auto* toolbar = lvgl::toolbar_create(parent, "Select File");
+    navigate_up_button = lvgl::toolbar_add_button_action(toolbar, LV_SYMBOL_UP, &onNavigateUpPressedCallback, this);
+
+    auto* wrapper = lv_obj_create(parent);
+    lv_obj_set_width(wrapper, LV_PCT(100));
+    lv_obj_set_style_border_width(wrapper, 0, 0);
+    lv_obj_set_style_pad_all(wrapper, 0, 0);
+    lv_obj_set_flex_grow(wrapper, 1);
+    lv_obj_set_flex_flow(wrapper, LV_FLEX_FLOW_ROW);
+
+    dir_entry_list = lv_list_create(wrapper);
+    lv_obj_set_height(dir_entry_list, LV_PCT(100));
+    lv_obj_set_flex_grow(dir_entry_list, 1);
+
+    auto* bottom_wrapper = lv_obj_create(parent);
+    lv_obj_set_flex_flow(bottom_wrapper, LV_FLEX_FLOW_ROW);
+    lv_obj_set_size(bottom_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
+    lv_obj_set_style_border_width(bottom_wrapper, 0, 0);
+    lv_obj_set_style_pad_all(bottom_wrapper, 0, 0);
+
+    path_textarea = lv_textarea_create(bottom_wrapper);
+    lv_textarea_set_one_line(path_textarea, true);
+    lv_obj_set_flex_grow(path_textarea, 1);
+    service::gui::keyboardAddTextArea(path_textarea);
+    lv_obj_add_event_cb(path_textarea, onPathTextChanged, LV_EVENT_VALUE_CHANGED, this);
+
+    select_button = lv_button_create(bottom_wrapper);
+    auto* select_button_label = lv_label_create(select_button);
+    lv_label_set_text(select_button_label, "Select");
+    lv_obj_add_event_cb(select_button, onSelectButtonPressed, LV_EVENT_SHORT_CLICKED, this);
+    lv_obj_add_flag(select_button, LV_OBJ_FLAG_HIDDEN);
+
+    update();
+}
+
+}
--- a/Tactility/Source/app/gpio/Gpio.cpp
+++ b/Tactility/Source/app/gpio/Gpio.cpp
@ -1,10 +1,10 @@
 #include "Tactility/service/loader/Loader.h"
-#include "Tactility/lvgl/Toolbar.h"
-
+#include <Tactility/Assets.h>
 #include <Tactility/app/gpio/GpioHal.h>
+#include "Tactility/lvgl/Toolbar.h"
 #include <Tactility/lvgl/LvglSync.h>
+#include <Tactility/lvgl/Color.h>
 #include <Tactility/Mutex.h>
-#include <Tactility/Thread.h>
 #include <Tactility/Timer.h>

 namespace tt::app::gpio {
@ -13,10 +13,8 @@ extern const AppManifest manifest;

 class GpioApp : public App {

-private:
-
-    lv_obj_t* lvPins[GPIO_NUM_MAX] = {0 };
-    uint8_t pinStates[GPIO_NUM_MAX] = {0 };
+    lv_obj_t* lvPins[GPIO_NUM_MAX] = { nullptr };
+    uint8_t pinStates[GPIO_NUM_MAX] = { 0 };
    std::unique_ptr<Timer> timer;
    Mutex mutex;

@ -40,7 +38,7 @@ void GpioApp::updatePinStates() {
    // Update pin states
    for (int i = 0; i < GPIO_NUM_MAX; ++i) {
 #ifdef ESP_PLATFORM
-        pinStates[i] = gpio_get_level((gpio_num_t)i);
+        pinStates[i] = gpio_get_level(static_cast<gpio_num_t>(i));
 #else
        pinStates[i] = gpio_get_level(i);
 #endif
@ -60,9 +58,9 @@ void GpioApp::updatePinWidgets() {
            if (reinterpret_cast<void*>(level) != label_user_data) {
                lv_obj_set_user_data(label, reinterpret_cast<void*>(level));
                if (level == 0) {
-                    lv_obj_set_style_text_color(label, lv_color_black(), 0);
+                    lv_obj_set_style_text_color(label, lv_color_background_darkest(), LV_STATE_DEFAULT);
                } else {
-                    lv_obj_set_style_text_color(label, lv_color_make(0, 200, 0), 0);
+                    lv_obj_set_style_text_color(label, lv_color_make(0, 200, 0), LV_STATE_DEFAULT);
                }
            }
        }
@ -71,8 +69,8 @@ void GpioApp::updatePinWidgets() {

 lv_obj_t* GpioApp::createGpioRowWrapper(lv_obj_t* parent) {
    lv_obj_t* wrapper = lv_obj_create(parent);
-    lv_obj_set_style_pad_all(wrapper, 0, 0);
-    lv_obj_set_style_border_width(wrapper, 0, 0);
+    lv_obj_set_style_pad_all(wrapper, 0, LV_STATE_DEFAULT);
+    lv_obj_set_style_border_width(wrapper, 0, LV_STATE_DEFAULT);
    lv_obj_set_size(wrapper, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
    return wrapper;
 }
@ -87,7 +85,7 @@ void GpioApp::onTimer() {
 void GpioApp::startTask() {
    mutex.lock();
    assert(timer == nullptr);
-    timer = std::make_unique<Timer>(Timer::Type::Periodic, [this]() {
+    timer = std::make_unique<Timer>(Timer::Type::Periodic, [this] {
        onTimer();
    });
    timer->start(100 / portTICK_PERIOD_MS);
@ -113,7 +111,7 @@ void GpioApp::onShow(AppContext& app, lv_obj_t* parent) {
    auto* wrapper = lv_obj_create(parent);
    lv_obj_set_width(wrapper, LV_PCT(100));
    lv_obj_set_flex_grow(wrapper, 1);
-    lv_obj_set_style_border_width(wrapper, 0, 0);
+    lv_obj_set_style_border_width(wrapper, 0, LV_STATE_DEFAULT);

    auto* display = lv_obj_get_display(parent);
    auto horizontal_px = lv_display_get_horizontal_resolution(display);
@ -122,7 +120,8 @@ void GpioApp::onShow(AppContext& app, lv_obj_t* parent) {

    int32_t x_spacing = 20;
    uint8_t column = 0;
-    uint8_t column_limit = is_landscape_display ? 10 : 5;
+    const uint8_t offset_from_left_label = 4;
+    const uint8_t column_limit = is_landscape_display ? 10 : 5;

    auto* row_wrapper = createGpioRowWrapper(wrapper);
    lv_obj_align(row_wrapper, LV_ALIGN_TOP_MID, 0, 0);
@ -138,8 +137,9 @@ void GpioApp::onShow(AppContext& app, lv_obj_t* parent) {

        // Add a new GPIO status indicator
        auto* status_label = lv_label_create(row_wrapper);
-        lv_obj_set_pos(status_label, (int32_t)((column+1) * x_spacing), 0);
+        lv_obj_set_pos(status_label, (int32_t)((column+1) * x_spacing + offset_from_left_label), 0);
        lv_label_set_text_fmt(status_label, "%s", LV_SYMBOL_STOP);
+        lv_obj_set_style_text_color(status_label, lv_color_background_darkest(), LV_STATE_DEFAULT);
        lvPins[i] = status_label;

        column++;
@ -148,7 +148,7 @@ void GpioApp::onShow(AppContext& app, lv_obj_t* parent) {
            // Add the GPIO number after the last item on a row
            auto* postfix = lv_label_create(row_wrapper);
            lv_label_set_text_fmt(postfix, "%02d", i);
-            lv_obj_set_pos(postfix, (int32_t)((column+1) * x_spacing), 0);
+            lv_obj_set_pos(postfix, (int32_t)((column+1) * x_spacing + offset_from_left_label), 0);

            // Add a new row wrapper underneath the last one
            auto* new_row_wrapper = createGpioRowWrapper(wrapper);
@ -170,6 +170,7 @@ void GpioApp::onHide(AppContext& app) {
 extern const AppManifest manifest = {
    .id = "Gpio",
    .name = "GPIO",
+    .icon = TT_ASSETS_APP_ICON_GPIO,
    .type = Type::System,
    .createApp = create<GpioApp>
 };
--- a/Tactility/Source/app/i2cscanner/I2cScanner.cpp
+++ b/Tactility/Source/app/i2cscanner/I2cScanner.cpp
@ -125,6 +125,8 @@ void I2cScannerApp::onShow(AppContext& app, lv_obj_t* parent) {
    lv_dropdown_set_options(port_dropdown, dropdown_items.c_str());
    lv_obj_set_width(port_dropdown, LV_PCT(48));
    lv_obj_align(port_dropdown, LV_ALIGN_TOP_RIGHT, 0, 0);
+    lv_obj_set_style_border_color(port_dropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+    lv_obj_set_style_border_width(port_dropdown, 1, LV_PART_MAIN);
    lv_obj_add_event_cb(port_dropdown, onSelectBusCallback, LV_EVENT_VALUE_CHANGED, this);
    auto selected_bus = getLastBusIndex();
    lv_dropdown_set_selected(port_dropdown, selected_bus);
--- a/Tactility/Source/app/launcher/Launcher.cpp
+++ b/Tactility/Source/app/launcher/Launcher.cpp
@ -27,33 +27,37 @@ static lv_obj_t* createAppButton(lv_obj_t* parent, const char* title, const char
    auto* apps_button = lv_button_create(wrapper);
    lv_obj_set_style_pad_hor(apps_button, 0, 0);
    lv_obj_set_style_pad_top(apps_button, 0, 0);
-    lv_obj_set_style_pad_bottom(apps_button, 16, 0);
+    lv_obj_set_style_pad_bottom(apps_button, 8, 0);
    lv_obj_set_style_shadow_width(apps_button, 0, 0);
    lv_obj_set_style_border_width(apps_button, 0, 0);
-    lv_obj_set_style_bg_color(apps_button, lv_color_white(), 0);
+    lv_obj_set_style_bg_opa(apps_button, 0, LV_PART_MAIN);

    auto* button_image = lv_image_create(apps_button);
    lv_image_set_src(button_image, imageFile);
-    lv_obj_add_event_cb(apps_button, onAppPressed, LV_EVENT_SHORT_CLICKED, (void*)appId);
-    lv_obj_set_style_image_recolor(button_image, lv_theme_get_color_primary(parent), 0);
-    lv_obj_set_style_image_recolor_opa(button_image, LV_OPA_COVER, 0);
+    lv_obj_set_style_image_recolor(button_image, lv_theme_get_color_primary(parent), LV_STATE_DEFAULT);
+    lv_obj_set_style_image_recolor_opa(button_image, LV_OPA_COVER, LV_STATE_DEFAULT);
    // Ensure buttons are still tappable when asset fails to load
+    // Icon images are 40x40, so we get some extra padding too
    lv_obj_set_size(button_image, 64, 64);

    auto* label = lv_label_create(wrapper);
    lv_label_set_text(label, title);
    lv_obj_align(label, LV_ALIGN_BOTTOM_MID, 0, 0);

+    lv_obj_add_event_cb(wrapper, onAppPressed, LV_EVENT_SHORT_CLICKED, (void*)appId);
+    lv_obj_add_event_cb(apps_button, onAppPressed, LV_EVENT_SHORT_CLICKED, (void*)appId);
+    lv_obj_add_event_cb(label, onAppPressed, LV_EVENT_SHORT_CLICKED, (void*)appId);
+
    return wrapper;
 }

 class LauncherApp : public App {

    void onCreate(TT_UNUSED AppContext& app) override {
-        auto* config = tt::getConfiguration();
+        auto* config = getConfiguration();
        if (!config->autoStartAppId.empty()) {
            TT_LOG_I(TAG, "auto-starting %s", config->autoStartAppId.c_str());
-            tt::service::loader::startApp(config->autoStartAppId);
+            service::loader::startApp(config->autoStartAppId);
        }
    }

--- a/Tactility/Source/app/log/Log.cpp
+++ b/Tactility/Source/app/log/Log.cpp
@ -91,10 +91,9 @@ public:
        updateLogEntries();
    }

-    void onResult(AppContext& app, Result result, std::unique_ptr<Bundle> bundle) override {
+    void onResult(AppContext& app, TT_UNUSED LaunchId launchId, Result result, std::unique_ptr<Bundle> bundle) override {
        if (result == Result::Ok && bundle != nullptr) {
-            auto resultIndex = selectiondialog::getResultIndex(*bundle);
-            switch (resultIndex) {
+            switch (selectiondialog::getResultIndex(*bundle)) {
                case 0:
                    filterLevel = LogLevel::Verbose;
                    break;
--- a/Tactility/Source/app/notes/Notes.cpp
+++ b/Tactility/Source/app/notes/Notes.cpp
@ -0,0 +1,207 @@
+#include <Tactility/app/AppManifest.h>
+#include <Tactility/file/File.h>
+#include <Tactility/lvgl/Keyboard.h>
+#include <Tactility/lvgl/Toolbar.h>
+#include <Tactility/Assets.h>
+#include <lvgl.h>
+
+#include <Tactility/app/fileselection/FileSelection.h>
+#include <Tactility/hal/sdcard/SdCardDevice.h>
+#include <Tactility/lvgl/LvglSync.h>
+
+namespace tt::app::notes {
+
+constexpr const char* TAG = "Notes";
+
+class NotesApp : public App {
+
+    lv_obj_t* uiCurrentFileName;
+    lv_obj_t* uiDropDownMenu;
+    lv_obj_t* uiNoteText;
+
+    std::string filePath;
+    std::string saveBuffer;
+
+    LaunchId loadFileLaunchId = 0;
+    LaunchId saveFileLaunchId = 0;
+
+#pragma region Main_Events_Functions
+
+    void appNotesEventCb(lv_event_t* e) {
+        lv_event_code_t code = lv_event_get_code(e);
+        lv_obj_t* obj = lv_event_get_target_obj(e);
+
+        if (code == LV_EVENT_VALUE_CHANGED) {
+            if (obj == uiDropDownMenu) {
+                switch (lv_dropdown_get_selected(obj)) {
+                    case 0: // New
+                        resetFileContent();
+                        break;
+                    case 1: // Save
+                        if (!filePath.empty()) {
+                            lvgl::getSyncLock()->lock();
+                            saveBuffer = lv_textarea_get_text(uiNoteText);
+                            lvgl::getSyncLock()->unlock();
+                            saveFile(filePath);
+                        }
+                        break;
+                    case 2: // Save as...
+                        lvgl::getSyncLock()->lock();
+                        saveBuffer = lv_textarea_get_text(uiNoteText);
+                        lvgl::getSyncLock()->unlock();
+                        saveFileLaunchId = fileselection::startForExistingOrNewFile();
+                        TT_LOG_I(TAG, "launched with id %d", loadFileLaunchId);
+                        break;
+                    case 3: // Load
+                        loadFileLaunchId = fileselection::startForExistingFile();
+                        TT_LOG_I(TAG, "launched with id %d", loadFileLaunchId);
+                        break;
+                }
+            } else {
+                auto* cont = lv_event_get_current_target_obj(e);
+                if (obj == cont) return;
+                if (lv_obj_get_child(cont, 1)) {
+                    saveFileLaunchId = fileselection::startForExistingOrNewFile();
+                    TT_LOG_I(TAG, "launched with id %d", loadFileLaunchId);
+                } else { //Reset
+                    resetFileContent();
+                }
+            }
+        }
+    }
+
+    void resetFileContent() {
+        lv_textarea_set_text(uiNoteText, "");
+        filePath = "";
+        saveBuffer = "";
+        lv_label_set_text(uiCurrentFileName, "Untitled");
+    }
+
+#pragma region Open_Events_Functions
+
+    void openFile(const std::string& path) {
+        // We might be reading from the SD card, which could share a SPI bus with other devices (display)
+        hal::sdcard::withSdCardLock<void>(path, [this, path]() {
+            auto data = file::readString(path);
+            if (data != nullptr) {
+               auto lock = lvgl::getSyncLock()->asScopedLock();
+               lock.lock();
+               lv_textarea_set_text(uiNoteText, reinterpret_cast<const char*>(data.get()));
+               lv_label_set_text(uiCurrentFileName, path.c_str());
+               filePath = path;
+               TT_LOG_I(TAG, "Loaded from %s", path.c_str());
+            }
+        });
+    }
+
+    bool saveFile(const std::string& path) {
+        // We might be writing to SD card, which could share a SPI bus with other devices (display)
+        return hal::sdcard::withSdCardLock<bool>(path, [this, path]() {
+           if (file::writeString(path, saveBuffer.c_str())) {
+               TT_LOG_I(TAG, "Saved to %s", path.c_str());
+               filePath = path;
+               return true;
+           } else {
+               return false;
+           }
+        });
+    }
+
+#pragma endregion Open_Events_Functions
+
+    void onShow(AppContext& context, lv_obj_t* parent) override {
+        lv_obj_remove_flag(parent, LV_OBJ_FLAG_SCROLLABLE);
+        lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
+
+        lv_obj_t* toolbar = tt::lvgl::toolbar_create(parent, context);
+        lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
+
+        uiDropDownMenu = lv_dropdown_create(toolbar);
+        lv_dropdown_set_options(uiDropDownMenu, LV_SYMBOL_FILE " New File\n" LV_SYMBOL_SAVE " Save\n" LV_SYMBOL_SAVE " Save As...\n" LV_SYMBOL_DIRECTORY " Open File");
+        lv_dropdown_set_text(uiDropDownMenu, "Menu");
+        lv_dropdown_set_symbol(uiDropDownMenu, LV_SYMBOL_DOWN);
+        lv_dropdown_set_selected_highlight(uiDropDownMenu, false);
+        lv_obj_set_style_border_color(uiDropDownMenu, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+        lv_obj_set_style_border_width(uiDropDownMenu, 1, LV_PART_MAIN);
+        lv_obj_align(uiDropDownMenu, LV_ALIGN_RIGHT_MID, 0, 0);
+        lv_obj_add_event_cb(uiDropDownMenu,
+            [](lv_event_t* e) {
+                auto *self = static_cast<NotesApp *>(lv_event_get_user_data(e));
+                self->appNotesEventCb(e);
+            },
+            LV_EVENT_VALUE_CHANGED,
+            this
+        );
+
+        lv_obj_t* wrapper = lv_obj_create(parent);
+        lv_obj_set_flex_flow(wrapper, LV_FLEX_FLOW_COLUMN);
+        lv_obj_set_flex_align(wrapper, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_START);
+        lv_obj_set_flex_grow(wrapper, 1);
+        lv_obj_set_width(wrapper, LV_PCT(100));
+        lv_obj_set_height(wrapper, LV_PCT(100));
+        lv_obj_set_style_pad_all(wrapper, 0, LV_PART_MAIN);
+        lv_obj_set_style_pad_row(wrapper, 0, LV_PART_MAIN);
+        lv_obj_set_style_border_width(wrapper, 0, 0);
+        lv_obj_remove_flag(wrapper, LV_OBJ_FLAG_SCROLLABLE);
+
+        uiNoteText = lv_textarea_create(wrapper);
+        lv_obj_set_width(uiNoteText, LV_PCT(100));
+        lv_obj_set_height(uiNoteText, LV_PCT(86));
+        lv_textarea_set_password_mode(uiNoteText, false);
+        lv_obj_set_style_bg_color(uiNoteText, lv_color_hex(0x262626), LV_PART_MAIN);
+        lv_textarea_set_placeholder_text(uiNoteText, "Notes...");
+
+        lv_obj_t* footer = lv_obj_create(wrapper);
+        lv_obj_set_flex_flow(footer, LV_FLEX_FLOW_ROW);
+        lv_obj_set_flex_align(footer, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
+        lv_obj_set_style_bg_color(footer, lv_color_hex(0x262626), LV_PART_MAIN);
+        lv_obj_set_width(footer, LV_PCT(100));
+        lv_obj_set_height(footer, LV_PCT(14));
+        lv_obj_set_style_pad_all(footer, 0, LV_PART_MAIN);
+        lv_obj_set_style_border_width(footer, 0, 0);
+        lv_obj_remove_flag(footer, LV_OBJ_FLAG_SCROLLABLE);
+
+        uiCurrentFileName = lv_label_create(footer);
+        lv_label_set_long_mode(uiCurrentFileName, LV_LABEL_LONG_MODE_SCROLL_CIRCULAR);
+        lv_obj_set_width(uiCurrentFileName, LV_SIZE_CONTENT);
+        lv_obj_set_height(uiCurrentFileName, LV_SIZE_CONTENT);
+        lv_label_set_text(uiCurrentFileName, "Untitled");
+        lv_obj_align(uiCurrentFileName, LV_ALIGN_CENTER, 0, 0);
+
+        //TODO: Move this to SD Card?
+        if (!file::findOrCreateDirectory(context.getPaths()->getDataDirectory(), 0777)) {
+            TT_LOG_E(TAG, "Failed to find or create path %s", context.getPaths()->getDataDirectory().c_str());
+        }
+
+        lvgl::keyboard_add_textarea(uiNoteText);
+    }
+
+    void onResult(AppContext& appContext, LaunchId launchId, Result result, std::unique_ptr<Bundle> resultData) override {
+        TT_LOG_I(TAG, "Result for launch id %d", launchId);
+        if (launchId == loadFileLaunchId) {
+            loadFileLaunchId = 0;
+            if (result == Result::Ok && resultData != nullptr) {
+                auto path = fileselection::getResultPath(*resultData);
+                openFile(path);
+            }
+        } else if (launchId == saveFileLaunchId) {
+            saveFileLaunchId = 0;
+            if (result == Result::Ok && resultData != nullptr) {
+                auto path = fileselection::getResultPath(*resultData);
+                // Must re-open file, because UI was cleared after opening other app
+                if (saveFile(path)) {
+                    openFile(path);
+                }
+            }
+        }
+    }
+};
+
+extern const AppManifest manifest = {
+    .id = "Notes",
+    .name = "Notes",
+    .icon = TT_ASSETS_APP_ICON_NOTES,
+    .createApp = create<NotesApp>
+};
+
+} // namespace tt::app::notes
--- a/Tactility/Source/app/screenshot/Screenshot.cpp
+++ b/Tactility/Source/app/screenshot/Screenshot.cpp
@ -168,6 +168,8 @@ void ScreenshotApp::createModeSettingWidgets(lv_obj_t* parent) {
    modeDropdown = lv_dropdown_create(mode_wrapper);
    lv_dropdown_set_options(modeDropdown, "Timer\nApp start");
    lv_obj_align_to(modeDropdown, mode_label, LV_ALIGN_OUT_RIGHT_MID, 8, 0);
+    lv_obj_set_style_border_color(modeDropdown, lv_color_hex(0xFAFAFA), LV_PART_MAIN);
+    lv_obj_set_style_border_width(modeDropdown, 1, LV_PART_MAIN);
    lv_obj_add_event_cb(modeDropdown, onModeSetCallback, LV_EVENT_VALUE_CHANGED, nullptr);
    service::screenshot::Mode mode = service->getMode();
    if (mode == service::screenshot::Mode::Apps) {
--- a/Tactility/Source/app/timedatesettings/TimeDateSettings.cpp
+++ b/Tactility/Source/app/timedatesettings/TimeDateSettings.cpp
@ -88,7 +88,7 @@ public:
        }
    }

-    void onResult(AppContext& app, Result result, std::unique_ptr<Bundle> bundle) override {
+    void onResult(AppContext& app, TT_UNUSED LaunchId launchId, Result result, std::unique_ptr<Bundle> bundle) override {
        if (result == Result::Ok && bundle != nullptr) {
            auto name = timezone::getResultName(*bundle);
            auto code = timezone::getResultCode(*bundle);
--- a/Tactility/Source/app/wifiapsettings/WifiApSettings.cpp
+++ b/Tactility/Source/app/wifiapsettings/WifiApSettings.cpp
@ -112,7 +112,7 @@ class WifiApSettings : public App {
        }
    }

-    void onResult(TT_UNUSED AppContext& appContext, TT_UNUSED Result result, std::unique_ptr<Bundle> bundle) override {
+    void onResult(TT_UNUSED AppContext& appContext, TT_UNUSED LaunchId launchId, TT_UNUSED Result result, std::unique_ptr<Bundle> bundle) override {
        if (result == Result::Ok && bundle != nullptr) {
            auto index = alertdialog::getResultIndex(*bundle);
            if (index == 0) { // Yes
--- a/Tactility/Source/lvgl/Color.cpp
+++ b/Tactility/Source/lvgl/Color.cpp
@ -0,0 +1,13 @@
+#include "Tactility/lvgl/Color.h"
+
+lv_color_t lv_color_foreground() {
+    return lv_color_make(0xFF, 0xFF, 0xFF);
+}
+
+lv_color_t lv_color_background() {
+    return lv_color_make(0x28, 0x2B, 0x30);
+}
+
+lv_color_t lv_color_background_darkest() {
+    return lv_color_make(0x00, 0x00, 0x00);
+}
--- a/Tactility/Source/lvgl/LabelUtils.cpp
+++ b/Tactility/Source/lvgl/LabelUtils.cpp
@ -1,14 +1,18 @@
 #include <Tactility/lvgl/LabelUtils.h>
 #include <Tactility/file/File.h>
+#include <Tactility/hal/sdcard/SdCardDevice.h>

 namespace tt::lvgl {

 #define TAG "tt_lv_label"

 bool label_set_text_file(lv_obj_t* label, const char* filepath) {
-    auto text = file::readString(filepath);
+    auto text = hal::sdcard::withSdCardLock<std::unique_ptr<uint8_t[]>>(std::string(filepath), [filepath]() {
+        return file::readString(filepath);
+    });
+
    if (text != nullptr) {
-        lv_label_set_text(label, (const char*)text.get());
+        lv_label_set_text(label, reinterpret_cast<const char*>(text.get()));
        return true;
    } else {
        return false;
--- a/Tactility/Source/service/loader/Loader.cpp
+++ b/Tactility/Source/service/loader/Loader.cpp
@ -47,17 +47,17 @@ static const char* appStateToString(app::State state) {

 class LoaderService final : public Service {

-private:
-
    std::shared_ptr<PubSub> pubsubExternal = std::make_shared<PubSub>();
    Mutex mutex = Mutex(Mutex::Type::Recursive);
    std::stack<std::shared_ptr<app::AppInstance>> appStack;
+    app::LaunchId nextLaunchId = 0;
+
    /** The dispatcher thread needs a callstack large enough to accommodate all the dispatched methods.
     * This includes full LVGL redraw via Gui::redraw()
     */
    std::unique_ptr<DispatcherThread> dispatcherThread = std::make_unique<DispatcherThread>("loader_dispatcher", 6144); // Files app requires ~5k

-    void onStartAppMessage(const std::string& id, std::shared_ptr<const Bundle> parameters);
+    void onStartAppMessage(const std::string& id, app::LaunchId launchId, std::shared_ptr<const Bundle> parameters);
    void onStopAppMessage(const std::string& id);

    void transitionAppToState(const std::shared_ptr<app::AppInstance>& app, app::State state);
@ -75,7 +75,7 @@ public:
        });
    }

-    void startApp(const std::string& id, std::shared_ptr<const Bundle> parameters);
+    app::LaunchId startApp(const std::string& id, std::shared_ptr<const Bundle> parameters);
    void stopApp();
    std::shared_ptr<app::AppContext> _Nullable getCurrentAppContext();

@ -86,8 +86,7 @@ std::shared_ptr<LoaderService> _Nullable optScreenshotService() {
    return service::findServiceById<LoaderService>(manifest.id);
 }

-void LoaderService::onStartAppMessage(const std::string& id, std::shared_ptr<const Bundle> parameters) {
-
+void LoaderService::onStartAppMessage(const std::string& id, app::LaunchId launchId, std::shared_ptr<const Bundle> parameters) {
    TT_LOG_I(TAG, "Start by id %s", id.c_str());

    auto app_manifest = app::findAppById(id);
@ -103,7 +102,7 @@ void LoaderService::onStartAppMessage(const std::string& id, std::shared_ptr<con
    }

    auto previous_app = !appStack.empty() ? appStack.top() : nullptr;
-    auto new_app = std::make_shared<app::AppInstance>(app_manifest, parameters);
+    auto new_app = std::make_shared<app::AppInstance>(app_manifest, launchId, parameters);

    new_app->mutableFlags().showStatusbar = (app_manifest->type != app::Type::Boot);

@ -123,7 +122,6 @@ void LoaderService::onStartAppMessage(const std::string& id, std::shared_ptr<con
 }

 void LoaderService::onStopAppMessage(const std::string& id) {
-
    auto lock = mutex.asScopedLock();
    if (!lock.lock(LOADER_TIMEOUT)) {
        TT_LOG_E(TAG, LOG_MESSAGE_MUTEX_LOCK_FAILED);
@ -157,6 +155,8 @@ void LoaderService::onStopAppMessage(const std::string& id) {
        result_set = true;
    }

+    auto app_to_stop_launch_id = app_to_stop->getLaunchId();
+
    transitionAppToState(app_to_stop, app::State::Hiding);
    transitionAppToState(app_to_stop, app::State::Stopped);

@ -196,12 +196,14 @@ void LoaderService::onStopAppMessage(const std::string& id) {
            if (result_bundle != nullptr) {
                instance_to_resume->getApp()->onResult(
                    *instance_to_resume,
+                    app_to_stop_launch_id,
                    result,
                    std::move(result_bundle)
                );
            } else {
                instance_to_resume->getApp()->onResult(
                    *instance_to_resume,
+                    app_to_stop_launch_id,
                    result,
                    nullptr
                );
@ -210,6 +212,7 @@ void LoaderService::onStopAppMessage(const std::string& id) {
            const Bundle empty_bundle;
            instance_to_resume->getApp()->onResult(
                *instance_to_resume,
+                app_to_stop_launch_id,
                app::Result::Cancelled,
                nullptr
            );
@ -255,10 +258,12 @@ void LoaderService::transitionAppToState(const std::shared_ptr<app::AppInstance>
    app->setState(state);
 }

-void LoaderService::startApp(const std::string& id, std::shared_ptr<const Bundle> parameters) {
-    dispatcherThread->dispatch([this, id, parameters]() {
-        onStartAppMessage(id, parameters);
+app::LaunchId LoaderService::startApp(const std::string& id, std::shared_ptr<const Bundle> parameters) {
+    auto launch_id = nextLaunchId++;
+    dispatcherThread->dispatch([this, id, launch_id, parameters]() {
+        onStartAppMessage(id, launch_id, parameters);
    });
+    return launch_id;
 }

 void LoaderService::stopApp() {
@ -278,11 +283,11 @@ std::shared_ptr<app::AppContext> _Nullable LoaderService::getCurrentAppContext()

 // region Public API

-void startApp(const std::string& id, std::shared_ptr<const Bundle> parameters) {
+app::LaunchId startApp(const std::string& id, std::shared_ptr<const Bundle> parameters) {
    TT_LOG_I(TAG, "Start app %s", id.c_str());
    auto service = optScreenshotService();
    assert(service);
-    service->startApp(id, std::move(parameters));
+    return service->startApp(id, std::move(parameters));
 }

 void stopApp() {
--- a/TactilityC/Include/tt_app_manifest.h
+++ b/TactilityC/Include/tt_app_manifest.h
@ -16,6 +16,8 @@ typedef enum {

 typedef void* AppHandle;

+typedef unsigned int LaunchId;
+
 /** Important: These function types must map to t::app types exactly */
 typedef void* (*AppCreateData)();
 typedef void (*AppDestroyData)(void* data);
@ -23,7 +25,7 @@ typedef void (*AppOnCreate)(AppHandle app, void* _Nullable data);
 typedef void (*AppOnDestroy)(AppHandle app, void* _Nullable data);
 typedef void (*AppOnShow)(AppHandle app, void* _Nullable data, lv_obj_t* parent);
 typedef void (*AppOnHide)(AppHandle app, void* _Nullable data);
-typedef void (*AppOnResult)(AppHandle app, void* _Nullable data, Result result, BundleHandle resultData);
+typedef void (*AppOnResult)(AppHandle app, void* _Nullable data, LaunchId launchId, Result result, BundleHandle resultData);

 typedef struct {
    /** The application's human-readable name */
--- a/TactilityC/Source/tt_app_manifest.cpp
+++ b/TactilityC/Source/tt_app_manifest.cpp
@ -12,16 +12,16 @@ void tt_app_register(
 ) {
 #ifdef ESP_PLATFORM
    assert((manifest->createData == nullptr) == (manifest->destroyData == nullptr));
-    tt::app::setElfAppManifest(
+    setElfAppManifest(
        manifest->name,
        manifest->icon,
-        (tt::app::CreateData)manifest->createData,
-        (tt::app::DestroyData)manifest->destroyData,
-        (tt::app::OnCreate)manifest->onCreate,
-        (tt::app::OnDestroy)manifest->onDestroy,
-        (tt::app::OnShow)manifest->onShow,
-        (tt::app::OnHide)manifest->onHide,
-        (tt::app::OnResult)manifest->onResult
+        manifest->createData,
+        manifest->destroyData,
+        manifest->onCreate,
+        manifest->onDestroy,
+        manifest->onShow,
+        manifest->onHide,
+        reinterpret_cast<tt::app::OnResult>(manifest->onResult)
    );
 #else
    tt_crash("TactilityC is not intended for PC/Simulator");
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Ken Van Hoeylandt	3dfc27e93e	Fixes for colours and margins in GPIO app and more (#284 ) Some checks failed Build Firmware / cyd-2432s024c (push) Has been cancelled Details Build Firmware / cyd-2432s032c (push) Has been cancelled Details Build Firmware / cyd-jc2432w328c (push) Has been cancelled Details Build Firmware / cyd-8048s043c (push) Has been cancelled Details Build Firmware / cyd-jc8048w550c (push) Has been cancelled Details Build Firmware / cyd-4848s040c (push) Has been cancelled Details Build Firmware / elecrow-crowpanel-advance-28 (push) Has been cancelled Details Build Firmware / elecrow-crowpanel-advance-35 (push) Has been cancelled Details Build Firmware / elecrow-crowpanel-advance-50 (push) Has been cancelled Details Build Firmware / elecrow-crowpanel-basic-28 (push) Has been cancelled Details Build Firmware / elecrow-crowpanel-basic-35 (push) Has been cancelled Details Build Firmware / elecrow-crowpanel-basic-50 (push) Has been cancelled Details Build Firmware / lilygo-tdeck (push) Has been cancelled Details Build Firmware / m5stack-core2 (push) Has been cancelled Details Build Firmware / m5stack-cores3 (push) Has been cancelled Details Build Firmware / unphone (push) Has been cancelled Details Build Firmware / waveshare-s3-touch-43 (push) Has been cancelled Details Build SDK / esp32 (push) Has been cancelled Details Build SDK / esp32s3 (push) Has been cancelled Details Build Simulator / Build-Simulator-Linux (push) Has been cancelled Details Build Simulator / Build-Simulator-macOS (push) Has been cancelled Details Tests / Run (push) Has been cancelled Details - Fixes for colours and margins in GPIO app - Removed unused imports	2025-06-01 17:52:09 +02:00
Ken Van Hoeylandt	e4ecec64c9	Reduced desktop icon sizes (#283 ) This improves loading performance (and uses less memory on ESP32 devices without PSRAM)	2025-06-01 17:11:29 +02:00
Shadowtrance	ce96474d84	Cleanup of Notes.cpp (#282 )	2025-05-27 08:08:04 +02:00
Ken Van Hoeylandt	2691dbb014	Implemented LaunchId and FileSelection, updated Notes (#281 ) - Implemented `LaunchId` to keep track of the apps that are started - Implemented `FileSelection` app to select existing and/or new files. - Moved some re-usable file functionality to `tt::file::` - Renamed `Files` app to `FileBrowser` - Updated `Notes` app to use new `FileSelection` functionality, and cleaned it up a bit. - General code cleanliness improvements	2025-05-25 22:11:50 +02:00
Ken Van Hoeylandt	74eb830870	Buildscript and kernel improvements (#280 ) - Implemented `constexpr long int getMicros()` in `Kernel.h` - Changed `secondsToTicks()`, `minutesToTicks()` and `bool isIsr()` to `constexpr` - Added more relevant build info	2025-05-24 17:27:37 +02:00
Shadowtrance	870924229a	Switch to dark theme (#278 )	2025-05-06 19:52:55 +02:00
Ken Van Hoeylandt	b2647f46bb	Cleanup (#277 )	2025-04-11 21:56:16 +02:00
Shadowtrance	d1c1a3a369	Add Notes app (#276 )	2025-04-11 21:35:29 +02:00
Ken Van Hoeylandt	a5090ec194	Refactor display app (#275 ) - Moved more code into class - Refactored some logic - UI is more dynamic: hide elements that are not supported by the hardware (gamma and/or brightness slider)	2025-04-08 22:38:03 +02:00
Ken Van Hoeylandt	f67cb241b7	SDK fixes (#272 ) - Fix for `ExternalApps/HelloWorld/build.sh` - Fix portability issue with regards to the SDK release script	2025-04-03 23:38:47 +02:00
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