Add GPIO app and update CI (#5)

.github/workflows/build-app.yml

@@ -17,14 +17,22 @@ jobs:
         uses: ./.github/actions/build-app
         with:
           app_name: Calculator
-  HelloWorld:
+  Diceware:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: "Build"
         uses: ./.github/actions/build-app
         with:
-          app_name: HelloWorld
+          app_name: Diceware
+  GPIO:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Build"
+        uses: ./.github/actions/build-app
+        with:
+          app_name: GPIO
   GraphicsDemo:
     runs-on: ubuntu-latest
     steps:
@@ -33,4 +41,11 @@ jobs:
         uses: ./.github/actions/build-app
         with:
           app_name: GraphicsDemo
-
+  HelloWorld:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Build"
+        uses: ./.github/actions/build-app
+        with:
+          app_name: HelloWorld

Apps/Calculator/manifest.properties

@@ -1,7 +1,7 @@
 [manifest]
 version=0.1
 [target]
-sdk=0.6.0-SNAPSHOT8
+sdk=0.6.0-SNAPSHOT9
 platforms=esp32,esp32s3
 [app]
 id=one.tactility.calculator

Apps/Diceware/manifest.properties

@@ -1,7 +1,7 @@
 [manifest]
 version=0.1
 [target]
-sdk=0.6.0-SNAPSHOT8
+sdk=0.6.0-SNAPSHOT9
 platforms=esp32,esp32s3
 [app]
 id=one.tactility.diceware

Apps/GPIO/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.20)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+if (DEFINED ENV{TACTILITY_SDK_PATH})
+    set(TACTILITY_SDK_PATH $ENV{TACTILITY_SDK_PATH})
+else()
+    set(TACTILITY_SDK_PATH "../../release/TactilitySDK")
+    message(WARNING "⚠️ TACTILITY_SDK_PATH environment variable is not set, defaulting to ${TACTILITY_SDK_PATH}")
+endif()
+
+include("${TACTILITY_SDK_PATH}/TactilitySDK.cmake")
+set(EXTRA_COMPONENT_DIRS ${TACTILITY_SDK_PATH})
+
+project(GPIO)
+tactility_project(GPIO)
+

Apps/GPIO/README.md

@@ -0,0 +1,10 @@
+# Diceware
+
+This application is based on the [Diceware](https://en.wikipedia.org/wiki/Diceware) passphrase generator.
+
+In a regular Diceware scenario, you roll 6 dice and match it with the corresponding word from the word list.
+In this application, it is simplified by getting a 32 bit random integer to get a random word from the word list.
+
+The application asks to enable Wi-Fi because of the hardware [random generator on the ESP32](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/random.html).
+You can enable the Wi-Fi radio to improve the randomness. You don't have to be connected to any network.
+If you automatically connect to a Wi-Fi network, go to the network settings and manually disconnect from it.

Apps/GPIO/main/CMakeLists.txt

@@ -0,0 +1,15 @@
+file(GLOB_RECURSE SOURCE_FILES
+    Source/*.c*
+    # Library source files must be included directly,
+    # because all regular dependencies get stripped by elf_loader's cmake script
+    ../../../Libraries/Str/Source/*.c**
+)
+
+idf_component_register(
+    SRCS ${SOURCE_FILES}
+    # Library headers must be included directly,
+    # because all regular dependencies get stripped by elf_loader's cmake script
+    INCLUDE_DIRS ../../../Libraries/Str/Include
+    REQUIRES TactilitySDK
+)
+

Apps/GPIO/main/Source/Application.cpp

@@ -0,0 +1,181 @@
+#include "Application.h"
+
+#include <tt_app_alertdialog.h>
+#include <tt_hal.h>
+#include <tt_hal_gpio.h>
+#include <tt_lvgl.h>
+#include <tt_lvgl_toolbar.h>
+
+#include <esp_log.h>
+
+constexpr char* TAG = "GPIO";
+
+void Application::updatePinStates() {
+    tt_mutex_lock(mutex, TT_MAX_TICKS);
+    // Update pin states
+    for (int i = 0; i < pinStates.size(); ++i) {
+        pinStates[i] = tt_hal_gpio_get_level(i);
+    }
+    tt_mutex_unlock(mutex);
+}
+
+void Application::updatePinWidgets() {
+    tt_lvgl_lock();
+    assert(pinStates.size() == pinWidgets.size());
+    for (int j = 0; j < pinStates.size(); ++j) {
+        int level = pinStates[j];
+        lv_obj_t* label = pinWidgets[j];
+        void* label_user_data = lv_obj_get_user_data(label);
+        // The user data stores the state, so we can avoid unnecessary updates
+        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_make(20, 20, 20), LV_STATE_DEFAULT);
+            } else {
+                lv_obj_set_style_text_color(label, lv_color_make(0, 200, 0), LV_STATE_DEFAULT);
+            }
+        }
+    }
+    tt_lvgl_unlock();
+}
+
+lv_obj_t* Application::createGpioRowWrapper(lv_obj_t* parent) {
+    lv_obj_t* wrapper = lv_obj_create(parent);
+    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;
+}
+
+// region Task
+
+void Application::onTimer(void* context) {
+    Application* app = static_cast<Application*>(context);
+    app->updatePinStates();
+    app->updatePinWidgets();
+}
+
+void Application::startTask() {
+    tt_mutex_lock(mutex, TT_MAX_TICKS);
+    assert(timer == nullptr);
+    timer = tt_timer_alloc(TimerTypePeriodic, onTimer, this);
+    tt_timer_start(timer, 100 / portTICK_PERIOD_MS);
+    tt_mutex_unlock(mutex);
+}
+
+void Application::stopTask() {
+    assert(timer);
+
+    tt_timer_stop(timer);
+    tt_timer_free(timer);
+    timer = nullptr;
+}
+
+// endregion Task
+
+static int getSquareSpacing(UiScale scale) {
+    if (scale == UiScaleSmallest) {
+        return 0;
+    } else {
+        return 4;
+    }
+}
+
+void Application::onCreate(AppHandle app) {
+    mutex = tt_mutex_alloc(MUTEX_TYPE_RECURSIVE);
+}
+
+void Application::onDestroy(AppHandle app) {
+    tt_mutex_free(mutex);
+}
+
+void Application::onShow(AppHandle app, lv_obj_t* parent) {
+    // auto ui_scale = hal::getConfiguration()->uiScale;
+
+    lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_style_pad_row(parent, 0, LV_STATE_DEFAULT);
+
+    auto* toolbar = tt_lvgl_toolbar_create_for_app(parent, app);
+    lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
+
+    // Main content wrapper, enables scrolling content without scrolling the toolbar
+    auto* expansion_wrapper = lv_obj_create(parent);
+    lv_obj_set_width(expansion_wrapper, LV_PCT(100));
+    lv_obj_set_flex_grow(expansion_wrapper, 1);
+    lv_obj_set_style_border_width(expansion_wrapper, 0, LV_STATE_DEFAULT);
+    lv_obj_set_style_pad_all(expansion_wrapper, 0, LV_STATE_DEFAULT);
+
+    auto* centering_wrapper = lv_obj_create(expansion_wrapper);
+    lv_obj_set_size(centering_wrapper, LV_SIZE_CONTENT, LV_SIZE_CONTENT);
+    lv_obj_set_align(centering_wrapper, LV_ALIGN_CENTER);
+    lv_obj_set_style_border_width(centering_wrapper, 0, LV_STATE_DEFAULT);
+    lv_obj_set_style_pad_all(centering_wrapper, 0, LV_STATE_DEFAULT);
+
+    auto* display = lv_obj_get_display(parent);
+    auto horizontal_px = lv_display_get_horizontal_resolution(display);
+    auto vertical_px = lv_display_get_vertical_resolution(display);
+    bool is_landscape_display = horizontal_px > vertical_px;
+
+    constexpr auto block_width = 16;
+    auto ui_scale = tt_hal_configuration_get_ui_scale();
+    const auto square_spacing = getSquareSpacing(ui_scale);
+    int32_t x_spacing = block_width + square_spacing;
+    uint8_t column = 0;
+    const uint8_t column_limit = is_landscape_display ? 10 : 5;
+
+    auto* row_wrapper = createGpioRowWrapper(centering_wrapper);
+    lv_obj_align(row_wrapper, LV_ALIGN_TOP_MID, 0, 0);
+
+    tt_mutex_lock(mutex, TT_MAX_TICKS);
+
+    auto pin_count = tt_hal_gpio_get_pin_count();
+    pinStates.resize(pin_count);
+    pinWidgets.resize(pin_count);
+
+    for (int i = 0; i < pin_count; ++i) {
+        constexpr uint8_t offset_from_left_label = 4;
+
+        // Add the GPIO number before the first item on a row
+        if (column == 0) {
+            auto* prefix = lv_label_create(row_wrapper);
+            lv_label_set_text_fmt(prefix, "%02d", i);
+        }
+
+        // Add a new GPIO status indicator
+        auto* status_label = lv_label_create(row_wrapper);
+        lv_obj_set_pos(status_label, (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_make(20, 20, 20), LV_STATE_DEFAULT);
+        pinWidgets[i] = status_label;
+        pinStates[i] = false;
+
+        column++;
+
+        if (column >= column_limit) {
+            // 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, (column + 1) * x_spacing + offset_from_left_label, 0);
+
+            // Add a new row wrapper underneath the last one
+            auto* new_row_wrapper = createGpioRowWrapper(centering_wrapper);
+            lv_obj_align_to(new_row_wrapper, row_wrapper, LV_ALIGN_BOTTOM_LEFT, 0, square_spacing);
+            row_wrapper = new_row_wrapper;
+
+            column = 0;
+        }
+    }
+
+    tt_mutex_unlock(mutex);
+
+    startTask();
+}
+
+void Application::onHide(AppHandle app) {
+    stopTask();
+
+    tt_mutex_lock(mutex, TT_MAX_TICKS);
+    pinWidgets.clear();
+    pinStates.clear();
+    tt_mutex_unlock(mutex);
+}

Apps/GPIO/main/Source/Application.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "tt_app.h"
+#include "tt_mutex.h"
+#include "tt_timer.h"
+
+#include <lvgl.h>
+#include <vector>
+
+class Application final {
+
+    std::vector<lv_obj_t*> pinWidgets;
+    std::vector<bool> pinStates;
+    TimerHandle timer;
+    MutexHandle mutex;
+
+    static lv_obj_t* createGpioRowWrapper(lv_obj_t* parent);
+    static void onTimer(void* parameter);
+
+public:
+
+    void onCreate(AppHandle app);
+    void onDestroy(AppHandle app);
+    void onShow(AppHandle context, lv_obj_t* parent);
+    void onHide(AppHandle context);
+
+    void startTask();
+    void stopTask();
+
+    void updatePinStates();
+    void updatePinWidgets();
+};

Apps/GPIO/main/Source/main.cpp

@@ -0,0 +1,44 @@
+#include <tt_app.h>
+#include "Application.h"
+
+static void onCreateApp(AppHandle appHandle, void* data) {
+    static_cast<Application*>(data)->onCreate(appHandle);
+}
+
+static void onDestroyApp(AppHandle appHandle, void* data) {
+    static_cast<Application*>(data)->onDestroy(appHandle);
+}
+
+static void onShowApp(AppHandle appHandle, void* data, lv_obj_t* parent) {
+    static_cast<Application*>(data)->onShow(appHandle, parent);
+}
+
+static void onHideApp(AppHandle appHandle, void* data) {
+    static_cast<Application*>(data)->onHide(appHandle);
+}
+
+static void* createApp() {
+    return new Application();
+}
+
+static void destroyApp(void* app) {
+    delete static_cast<Application*>(app);
+}
+
+ExternalAppManifest manifest = {
+    .createData = createApp,
+    .destroyData = destroyApp,
+    .onCreate = onCreateApp,
+    .onDestroy = onDestroyApp,
+    .onShow = onShowApp,
+    .onHide = onHideApp,
+};
+
+extern "C" {
+
+int main(int argc, char* argv[]) {
+    tt_app_register(&manifest);
+    return 0;
+}
+
+}

Apps/GPIO/manifest.properties

@@ -0,0 +1,10 @@
+[manifest]
+version=0.1
+[target]
+sdk=0.6.0-SNAPSHOT9
+platforms=esp32,esp32s3
+[app]
+id=one.tactility.gpio
+versionName=0.1.0
+versionCode=1
+name=GPIO

Apps/GPIO/tactility.py

@@ -0,0 +1,673 @@
+import configparser
+import json
+import os
+import re
+import shutil
+import sys
+import subprocess
+import time
+import urllib.request
+import zipfile
+import requests
+import tarfile
+import shutil
+import configparser
+
+ttbuild_path = ".tactility"
+ttbuild_version = "2.3.4"
+ttbuild_cdn = "https://cdn.tactility.one"
+ttbuild_sdk_json_validity = 3600  # seconds
+ttport = 6666
+verbose = False
+use_local_sdk = False
+local_base_path = None
+valid_platforms = ["esp32", "esp32s3"]
+no_animations = False
+
+spinner_pattern = [
+    "⠋",
+    "⠙",
+    "⠹",
+    "⠸",
+    "⠼",
+    "⠴",
+    "⠦",
+    "⠧",
+    "⠇",
+    "⠏"
+]
+
+if sys.platform == "win32":
+    shell_color_red = ""
+    shell_color_orange = ""
+    shell_color_green = ""
+    shell_color_purple = ""
+    shell_color_cyan = ""
+    shell_color_reset = ""
+else:
+    shell_color_red = "\033[91m"
+    shell_color_orange = "\033[93m"
+    shell_color_green = "\033[32m"
+    shell_color_purple = "\033[35m"
+    shell_color_cyan = "\033[36m"
+    shell_color_reset = "\033[m"
+
+def print_help():
+    print("Usage: python tactility.py [action] [options]")
+    print("")
+    print("Actions:")
+    print("  build [esp32,esp32s3]          Build the app. Optionally specify a platform.")
+    print("    esp32:         ESP32")
+    print("    esp32s3:       ESP32 S3")
+    print("  clean                          Clean the build folders")
+    print("  clearcache                     Clear the SDK cache")
+    print("  updateself                     Update this tool")
+    print("  run [ip]                       Run the application")
+    print("  install [ip]                   Install the application")
+    print("  uninstall [ip]                 Uninstall the application")
+    print("  bir [ip] [esp32,esp32s3]       Build, install then run. Optionally specify a platform.")
+    print("  brrr [ip] [esp32,esp32s3]      Functionally the same as \"bir\", but \"app goes brrr\" meme variant.")
+    print("")
+    print("Options:")
+    print("  --help                         Show this commandline info")
+    print("  --local-sdk                    Use SDK specified by environment variable TACTILITY_SDK_PATH with platform subfolders matching target platforms.")
+    print("  --skip-build                   Run everything except the idf.py/CMake commands")
+    print("  --verbose                      Show extra console output")
+    print("  --no-animations                Disable animations during building (e.g. for CI jobs)")
+
+# region Core
+
+def download_file(url, filepath):
+    global verbose
+    if verbose:
+        print(f"Downloading from {url} to {filepath}")
+    request = urllib.request.Request(
+        url,
+        data=None,
+        headers={
+            "User-Agent": f"Tactility Build Tool {ttbuild_version}"
+        }
+    )
+    try:
+        response = urllib.request.urlopen(request)
+        file = open(filepath, mode="wb")
+        file.write(response.read())
+        file.close()
+        return True
+    except OSError as error:
+        if verbose:
+            print_error(f"Failed to fetch URL {url}\n{error}")
+        return False
+
+def print_warning(message):
+    print(f"{shell_color_orange}WARNING: {message}{shell_color_reset}")
+
+def print_error(message):
+    print(f"{shell_color_red}ERROR: {message}{shell_color_reset}")
+
+def exit_with_error(message):
+    print_error(message)
+    sys.exit(1)
+
+def get_url(ip, path):
+    return f"http://{ip}:{ttport}{path}"
+
+def read_properties_file(path):
+    config = configparser.RawConfigParser()
+    config.read(path)
+    return config
+
+#endregion Core
+
+#region SDK helpers
+
+def read_sdk_json():
+    json_file_path = os.path.join(ttbuild_path, "sdk.json")
+    json_file = open(json_file_path)
+    return json.load(json_file)
+
+def get_sdk_dir(version, platform):
+    global use_local_sdk, local_base_path
+    if use_local_sdk:
+        base_path = local_base_path
+        if base_path is None:
+            exit_with_error("TACTILITY_SDK_PATH environment variable is not set")
+        sdk_parent_dir = os.path.join(base_path, f"{version}-{platform}")
+        sdk_dir = os.path.join(sdk_parent_dir, "TactilitySDK")
+        if not os.path.isdir(sdk_dir):
+            exit_with_error(f"Local SDK folder not found for platform {platform}: {sdk_dir}")
+        return sdk_dir
+    else:
+        return os.path.join(ttbuild_path, f"{version}-{platform}", "TactilitySDK")
+
+def validate_local_sdks(platforms, version):
+    if not use_local_sdk:
+        return
+    global local_base_path
+    base_path = local_base_path
+    for platform in platforms:
+        sdk_parent_dir = os.path.join(base_path, f"{version}-{platform}")
+        sdk_dir = os.path.join(sdk_parent_dir, "TactilitySDK")
+        if not os.path.isdir(sdk_dir):
+            exit_with_error(f"Local SDK folder missing for {platform}: {sdk_dir}")
+
+def get_sdk_root_dir(version, platform):
+    global ttbuild_cdn
+    return os.path.join(ttbuild_path, f"{version}-{platform}")
+
+def get_sdk_url(version, platform):
+    global ttbuild_cdn
+    return f"{ttbuild_cdn}/TactilitySDK-{version}-{platform}.zip"
+
+def sdk_exists(version, platform):
+    sdk_dir = get_sdk_dir(version, platform)
+    return os.path.isdir(sdk_dir)
+
+def should_update_sdk_json():
+    global ttbuild_cdn
+    json_filepath = os.path.join(ttbuild_path, "sdk.json")
+    if os.path.exists(json_filepath):
+        json_modification_time = os.path.getmtime(json_filepath)
+        now = time.time()
+        global ttbuild_sdk_json_validity
+        minimum_seconds_difference = ttbuild_sdk_json_validity
+        return (now - json_modification_time) > minimum_seconds_difference
+    else:
+        return True
+
+def update_sdk_json():
+    global ttbuild_cdn, ttbuild_path
+    json_url = f"{ttbuild_cdn}/sdk.json"
+    json_filepath = os.path.join(ttbuild_path, "sdk.json")
+    return download_file(json_url, json_filepath)
+
+def should_fetch_sdkconfig_files(platform_targets):
+    for platform in platform_targets:
+        sdkconfig_filename = f"sdkconfig.app.{platform}"
+        if not os.path.exists(os.path.join(ttbuild_path, sdkconfig_filename)):
+            return True
+    return False
+
+def fetch_sdkconfig_files(platform_targets):
+    for platform in platform_targets:
+        sdkconfig_filename = f"sdkconfig.app.{platform}"
+        target_path = os.path.join(ttbuild_path, sdkconfig_filename)
+        if not download_file(f"{ttbuild_cdn}/{sdkconfig_filename}", target_path):
+            exit_with_error(f"Failed to download sdkconfig file for {platform}")
+
+#endregion SDK helpers
+
+#region Validation
+
+def validate_environment():
+    if os.environ.get("IDF_PATH") is None:
+        exit_with_error("Cannot find the Espressif IDF SDK. Ensure it is installed and that it is activated via $PATH_TO_IDF_SDK/export.sh")
+    if not os.path.exists("manifest.properties"):
+        exit_with_error("manifest.properties not found")
+    if use_local_sdk == False and os.environ.get("TACTILITY_SDK_PATH") is not None:
+        print_warning("TACTILITY_SDK_PATH is set, but will be ignored by this command.")
+        print_warning("If you want to use it, use the '--local-sdk' parameter")
+    elif use_local_sdk == True and os.environ.get("TACTILITY_SDK_PATH") is None:
+        exit_with_error("local build was requested, but TACTILITY_SDK_PATH environment variable is not set.")
+
+def validate_version_and_platforms(sdk_json, sdk_version, platforms_to_build):
+    version_map = sdk_json["versions"]
+    if not sdk_version in version_map:
+        exit_with_error(f"Version not found: {sdk_version}")
+    version_data = version_map[sdk_version]
+    available_platforms = version_data["platforms"]
+    for desired_platform in platforms_to_build:
+        if not desired_platform in available_platforms:
+            exit_with_error(f"Platform {desired_platform} is not available. Available ones: {available_platforms}")
+
+def validate_self(sdk_json):
+    if not "toolVersion" in sdk_json:
+        exit_with_error("Server returned invalid SDK data format (toolVersion not found)")
+    if not "toolCompatibility" in sdk_json:
+        exit_with_error("Server returned invalid SDK data format (toolCompatibility not found)")
+    if not "toolDownloadUrl" in sdk_json:
+        exit_with_error("Server returned invalid SDK data format (toolDownloadUrl not found)")
+    tool_version = sdk_json["toolVersion"]
+    tool_compatibility = sdk_json["toolCompatibility"]
+    if tool_version != ttbuild_version:
+        print_warning(f"New version available: {tool_version} (currently using {ttbuild_version})")
+        print_warning(f"Run 'tactility.py updateself' to update.")
+    if re.search(tool_compatibility, ttbuild_version) is None:
+        print_error("The tool is not compatible anymore.")
+        print_error("Run 'tactility.py updateself' to update.")
+        sys.exit(1)
+
+#endregion Validation
+
+#region Manifest
+
+def read_manifest():
+    return read_properties_file("manifest.properties")
+
+def validate_manifest(manifest):
+    # [manifest]
+    if not "manifest" in manifest:
+        exit_with_error("Invalid manifest format: [manifest] not found")
+    if not "version" in manifest["manifest"]:
+        exit_with_error("Invalid manifest format: [manifest] version not found")
+    # [target]
+    if not "target" in manifest:
+        exit_with_error("Invalid manifest format: [target] not found")
+    if not "sdk" in manifest["target"]:
+        exit_with_error("Invalid manifest format: [target] sdk not found")
+    if not "platforms" in manifest["target"]:
+        exit_with_error("Invalid manifest format: [target] platforms not found")
+    # [app]
+    if not "app" in manifest:
+        exit_with_error("Invalid manifest format: [app] not found")
+    if not "id" in manifest["app"]:
+        exit_with_error("Invalid manifest format: [app] id not found")
+    if not "versionName" in manifest["app"]:
+        exit_with_error("Invalid manifest format: [app] versionName not found")
+    if not "versionCode" in manifest["app"]:
+        exit_with_error("Invalid manifest format: [app] versionCode not found")
+    if not "name" in manifest["app"]:
+        exit_with_error("Invalid manifest format: [app] name not found")
+
+def is_valid_manifest_platform(manifest, platform):
+    manifest_platforms = manifest["target"]["platforms"].split(",")
+    return platform in manifest_platforms
+
+def validate_manifest_platform(manifest, platform):
+    if not is_valid_manifest_platform(manifest, platform):
+        exit_with_error(f"Platform {platform} is not available in the manifest.")
+
+def get_manifest_target_platforms(manifest, requested_platform):
+    if requested_platform == "" or requested_platform is None:
+        return manifest["target"]["platforms"].split(",")
+    else:
+        validate_manifest_platform(manifest, requested_platform)
+        return [requested_platform]
+
+#endregion Manifest
+
+#region SDK download
+
+def sdk_download(version, platform):
+    sdk_root_dir = get_sdk_root_dir(version, platform)
+    os.makedirs(sdk_root_dir, exist_ok=True)
+    sdk_url = get_sdk_url(version, platform)
+    filepath = os.path.join(sdk_root_dir, f"{version}-{platform}.zip")
+    print(f"Downloading SDK version {version} for {platform}")
+    if download_file(sdk_url, filepath):
+        with zipfile.ZipFile(filepath, "r") as zip_ref:
+            zip_ref.extractall(os.path.join(sdk_root_dir, "TactilitySDK"))
+        return True
+    else:
+        return False
+
+def sdk_download_all(version, platforms):
+    for platform in platforms:
+        if not sdk_exists(version, platform):
+            if not sdk_download(version, platform):
+                return False
+        else:
+            if verbose:
+                print(f"Using cached download for SDK version {version} and platform {platform}")
+    return True
+
+#endregion SDK download
+
+#region Building
+
+def get_cmake_path(platform):
+    return os.path.join("build", f"cmake-build-{platform}")
+
+def find_elf_file(platform):
+    cmake_dir = get_cmake_path(platform)
+    if os.path.exists(cmake_dir):
+        for file in os.listdir(cmake_dir):
+            if file.endswith(".app.elf"):
+                return os.path.join(cmake_dir, file)
+    return None
+
+def build_all(version, platforms, skip_build):
+    for platform in platforms:
+        # First build command must be "idf.py build", otherwise it fails to execute "idf.py elf"
+        # We check if the ELF file exists and run the correct command
+        # This can lead to code caching issues, so sometimes a clean build is required
+        if find_elf_file(platform) is None:
+            if not build_first(version, platform, skip_build):
+                return False
+        else:
+            if not build_consecutively(version, platform, skip_build):
+                return False
+    return True
+
+def wait_for_build(process, platform):
+    global no_animations
+    buffer = []
+    os.set_blocking(process.stdout.fileno(), False)
+    if no_animations:
+        print(f"Building for {platform}")
+    while process.poll() is None:
+        for i in spinner_pattern:
+            time.sleep(0.1)
+            if not no_animations:
+                progress_text = f"Building for {platform} {shell_color_cyan}" + str(i) + shell_color_reset
+                sys.stdout.write(progress_text + "\r")
+            while True:
+                line = process.stdout.readline()
+                decoded_line = line.decode("UTF-8")
+                if decoded_line != "":
+                    buffer.append(decoded_line)
+                else:
+                    break
+    return buffer
+
+# The first build must call "idf.py build" and consecutive builds must call "idf.py elf" as it finishes faster.
+# The problem is that the "idf.py build" always results in an error, even though the elf file is created.
+# The solution is to suppress the error if we find that the elf file was created.
+def build_first(version, platform, skip_build):
+    sdk_dir = get_sdk_dir(version, platform)
+    if verbose:
+        print(f"Using SDK at {sdk_dir}")
+    os.environ["TACTILITY_SDK_PATH"] = sdk_dir
+    sdkconfig_path = os.path.join(ttbuild_path, f"sdkconfig.app.{platform}")
+    os.system(f"cp {sdkconfig_path} sdkconfig")
+    elf_path = find_elf_file(platform)
+    # Remove previous elf file: re-creation of the file is used to measure if the build succeeded,
+    # as the actual build job will always fail due to technical issues with the elf cmake script
+    if elf_path is not None:
+        os.remove(elf_path)
+    if skip_build:
+        return True
+    print("Building first build")
+    cmake_path = get_cmake_path(platform)
+    with subprocess.Popen(["idf.py", "-B", cmake_path, "build"], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) as process:
+        build_output = wait_for_build(process, platform)
+        # The return code is never expected to be 0 due to a bug in the elf cmake script, but we keep it just in case
+        if process.returncode == 0:
+            print(f"{shell_color_green}Building for {platform} ✅{shell_color_reset}")
+            return True
+        else:
+            if find_elf_file(platform) is None:
+                for line in build_output:
+                    print(line, end="")
+                print(f"{shell_color_red}Building for {platform} failed ❌{shell_color_reset}")
+                return False
+            else:
+                print(f"{shell_color_green}Building for {platform} ✅{shell_color_reset}")
+                return True
+
+def build_consecutively(version, platform, skip_build):
+    sdk_dir = get_sdk_dir(version, platform)
+    if verbose:
+        print(f"Using SDK at {sdk_dir}")
+    os.environ["TACTILITY_SDK_PATH"] = sdk_dir
+    sdkconfig_path = os.path.join(ttbuild_path, f"sdkconfig.app.{platform}")
+    os.system(f"cp {sdkconfig_path} sdkconfig")
+    if skip_build:
+        return True
+    cmake_path = get_cmake_path(platform)
+    with subprocess.Popen(["idf.py", "-B", cmake_path, "elf"], stdout=subprocess.PIPE, stderr=subprocess.STDOUT) as process:
+        build_output = wait_for_build(process, platform)
+        if process.returncode == 0:
+            print(f"{shell_color_green}Building for {platform} ✅{shell_color_reset}")
+            return True
+        else:
+            for line in build_output:
+                print(line, end="")
+            print(f"{shell_color_red}Building for {platform} failed ❌{shell_color_reset}")
+            return False
+
+#endregion Building
+
+#region Packaging
+
+def package_intermediate_manifest(target_path):
+    if not os.path.isfile("manifest.properties"):
+        print_error("manifest.properties not found")
+        return
+    shutil.copy("manifest.properties", os.path.join(target_path, "manifest.properties"))
+
+def package_intermediate_binaries(target_path, platforms):
+    elf_dir = os.path.join(target_path, "elf")
+    os.makedirs(elf_dir, exist_ok=True)
+    for platform in platforms:
+        elf_path = find_elf_file(platform)
+        if elf_path is None:
+            print_error(f"ELF file not found at {elf_path}")
+            return
+        shutil.copy(elf_path, os.path.join(elf_dir, f"{platform}.elf"))
+
+def package_intermediate_assets(target_path):
+    if os.path.isdir("assets"):
+        shutil.copytree("assets", os.path.join(target_path, "assets"), dirs_exist_ok=True)
+
+def package_intermediate(platforms):
+    target_path = os.path.join("build", "package-intermediate")
+    if os.path.isdir(target_path):
+        shutil.rmtree(target_path)
+    os.makedirs(target_path, exist_ok=True)
+    package_intermediate_manifest(target_path)
+    package_intermediate_binaries(target_path, platforms)
+    package_intermediate_assets(target_path)
+
+def package_name(platforms):
+    elf_path = find_elf_file(platforms[0])
+    elf_base_name = os.path.basename(elf_path).removesuffix(".app.elf")
+    return os.path.join("build", f"{elf_base_name}.app")
+
+def package_all(platforms):
+    print("Packaging app")
+    package_intermediate(platforms)
+    # Create build/something.app
+    tar_path = package_name(platforms)
+    tar = tarfile.open(tar_path, mode="w", format=tarfile.USTAR_FORMAT)
+    tar.add(os.path.join("build", "package-intermediate"), arcname="")
+    tar.close()
+
+#endregion Packaging
+
+def setup_environment():
+    global ttbuild_path
+    os.makedirs(ttbuild_path, exist_ok=True)
+
+def build_action(manifest, platform_arg):
+    # Environment validation
+    validate_environment()
+    platforms_to_build = get_manifest_target_platforms(manifest, platform_arg)
+    
+    if use_local_sdk:
+        global local_base_path
+        local_base_path = os.environ.get("TACTILITY_SDK_PATH")
+        validate_local_sdks(platforms_to_build, manifest["target"]["sdk"])
+    
+    if should_fetch_sdkconfig_files(platforms_to_build):
+        fetch_sdkconfig_files(platforms_to_build)
+    
+    if not use_local_sdk:
+        sdk_json = read_sdk_json()
+        validate_self(sdk_json)
+        if not "versions" in sdk_json:
+            exit_with_error("Version data not found in sdk.json")
+    # Build
+    sdk_version = manifest["target"]["sdk"]
+    if not use_local_sdk:
+        validate_version_and_platforms(sdk_json, sdk_version, platforms_to_build)
+        if not sdk_download_all(sdk_version, platforms_to_build):
+            exit_with_error("Failed to download one or more SDKs")
+    if build_all(sdk_version, platforms_to_build, skip_build):  # Environment validation
+        if not skip_build:
+            package_all(platforms_to_build)
+
+def clean_action():
+    if os.path.exists("build"):
+        print(f"Removing build/")
+        shutil.rmtree("build")
+    else:
+        print("Nothing to clean")
+
+def clear_cache_action():
+    if os.path.exists(ttbuild_path):
+        print(f"Removing {ttbuild_path}/")
+        shutil.rmtree(ttbuild_path)
+    else:
+        print("Nothing to clear")
+
+def update_self_action():
+    sdk_json = read_sdk_json()
+    tool_download_url = sdk_json["toolDownloadUrl"]
+    if download_file(tool_download_url, "tactility.py"):
+        print("Updated")
+    else:
+        exit_with_error("Update failed")
+
+def get_device_info(ip):
+    print(f"Getting device info from {ip}")
+    url = get_url(ip, "/info")
+    try:
+        response = requests.get(url)
+        if response.status_code != 200:
+            print_error("Run failed")
+        else:
+            print(response.json())
+            print(f"{shell_color_green}Run successful ✅{shell_color_reset}")
+    except requests.RequestException as e:
+        print(f"Request failed: {e}")
+
+def run_action(manifest, ip):
+    app_id = manifest["app"]["id"]
+    print(f"Running {app_id} on {ip}")
+    url = get_url(ip, "/app/run")
+    params = {'id': app_id}
+    try:
+        response = requests.post(url, params=params)
+        if response.status_code != 200:
+            print_error("Run failed")
+        else:
+            print(f"{shell_color_green}Run successful ✅{shell_color_reset}")
+    except requests.RequestException as e:
+        print(f"Request failed: {e}")
+
+def install_action(ip, platforms):
+    for platform in platforms:
+        elf_path = find_elf_file(platform)
+        if elf_path is None:
+            exit_with_error(f"ELF file not built for {platform}")
+    package_path = package_name(platforms)
+    print(f"Installing {package_path} to {ip}")
+    url = get_url(ip, "/app/install")
+    try:
+        # Prepare multipart form data
+        with open(package_path, 'rb') as file:
+            files = {
+                'elf': file
+            }
+            response = requests.put(url, files=files)
+            if response.status_code != 200:
+                print_error("Install failed")
+            else:
+                print(f"{shell_color_green}Installation successful ✅{shell_color_reset}")
+    except requests.RequestException as e:
+        print_error(f"Installation failed: {e}")
+    except IOError as e:
+        print_error(f"File error: {e}")
+
+def uninstall_action(manifest, ip):
+    app_id = manifest["app"]["id"]
+    print(f"Uninstalling {app_id} on {ip}")
+    url = get_url(ip, "/app/uninstall")
+    params = {'id': app_id}
+    try:
+        response = requests.put(url, params=params)
+        if response.status_code != 200:
+            print_error("Uninstall failed")
+        else:
+            print(f"{shell_color_green}Uninstall successful ✅{shell_color_reset}")
+    except requests.RequestException as e:
+        print(f"Request failed: {e}")
+#region Main
+
+if __name__ == "__main__":
+    print(f"Tactility Build System v{ttbuild_version}")
+    if "--help" in sys.argv:
+        print_help()
+        sys.exit()
+    # Argument validation
+    if len(sys.argv) == 1:
+        print_help()
+        sys.exit()
+    if "--verbose" in sys.argv:
+        verbose = True
+        sys.argv.remove("--verbose")
+    skip_build = False
+    if "--skip-build" in sys.argv:
+        skip_build = True
+        sys.argv.remove("--skip-build")
+    if "--local-sdk" in sys.argv:
+        use_local_sdk = True
+        sys.argv.remove("--local-sdk")
+    if "--no-animations" in sys.argv:
+        no_animations = True
+        sys.argv.remove("--no-animations")
+    action_arg = sys.argv[1]
+
+    # Environment setup
+    setup_environment()
+    if not os.path.isfile("manifest.properties"):
+        exit_with_error("manifest.properties not found")
+    manifest = read_manifest()
+    validate_manifest(manifest)
+    all_platform_targets = manifest["target"]["platforms"].split(",")
+    # Update SDK cache (sdk.json)
+    if should_update_sdk_json() and not update_sdk_json():
+        exit_with_error("Failed to retrieve SDK info")
+    # Actions
+    if action_arg == "build":
+        if len(sys.argv) < 2:
+            print_help()
+            exit_with_error("Commandline parameter missing")
+        platform = None
+        if len(sys.argv) > 2:
+            platform = sys.argv[2]
+        build_action(manifest, platform)
+    elif action_arg == "clean":
+        clean_action()
+    elif action_arg == "clearcache":
+        clear_cache_action()
+    elif action_arg == "updateself":
+        update_self_action()
+    elif action_arg == "run":
+        if len(sys.argv) < 3:
+            print_help()
+            exit_with_error("Commandline parameter missing")
+        run_action(manifest, sys.argv[2])
+    elif action_arg == "install":
+        if len(sys.argv) < 3:
+            print_help()
+            exit_with_error("Commandline parameter missing")
+        platform = None
+        platforms_to_install = all_platform_targets
+        if len(sys.argv) >= 4:
+            platform = sys.argv[3]
+            platforms_to_install = [platform]
+        install_action(sys.argv[2], platforms_to_install)
+    elif action_arg == "uninstall":
+        if len(sys.argv) < 3:
+            print_help()
+            exit_with_error("Commandline parameter missing")
+        uninstall_action(manifest, sys.argv[2])
+    elif action_arg == "bir" or action_arg == "brrr":
+        if len(sys.argv) < 3:
+            print_help()
+            exit_with_error("Commandline parameter missing")
+        platform = None
+        platforms_to_install = all_platform_targets
+        if len(sys.argv) >= 4:
+            platform = sys.argv[3]
+            platforms_to_install = [platform]
+        build_action(manifest, platform)
+        install_action(sys.argv[2], platforms_to_install)
+        run_action(manifest, sys.argv[2])
+    else:
+        print_help()
+        exit_with_error("Unknown commandline parameter")
+
+#endregion Main

Apps/GraphicsDemo/manifest.properties

@@ -1,7 +1,7 @@
 [manifest]
 version=0.1
 [target]
-sdk=0.6.0-SNAPSHOT8
+sdk=0.6.0-SNAPSHOT9
 platforms=esp32,esp32s3
 [app]
 id=one.tactility.graphicsdemo

Apps/HelloWorld/manifest.properties

@@ -1,7 +1,7 @@
 [manifest]
 version=0.1
 [target]
-sdk=0.6.0-SNAPSHOT8
+sdk=0.6.0-SNAPSHOT9
 platforms=esp32,esp32s3
 [app]
 id=one.tactility.helloworld