External apps (#1469)

* implemented external app build

* added some ui stuff for testing

* added pacman game

* wired key to pacman game

* fixed pacman drawing issue

* changed afsk rx app to be external

* fixed ui::NavigationView initialization for external apps

* refactoring

* refactoring

* moved m4 image to external app

* added script for external app deployment

* refactoring

* implemented dynamic app listing

* added color to app icon

* improved app loading

* added external apps to sd card content

* refactoring

* review findings

* typo

* review findings

* improved memory management of bitmaps

firmware/application/external/pacman/main.cpp

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "ui.hpp"
+#include "ui_pacman.hpp"
+#include "ui_navigation.hpp"
+#include "external_app.hpp"
+
+namespace ui::external_app::pacman {
+void initialize_app(ui::NavigationView& nav) {
+    nav.push<PacmanView>();
+}
+}  // namespace ui::external_app::pacman
+
+extern "C" {
+
+__attribute__((section(".external_app.app_pacman.application_information"), used)) application_information_t _application_information_pacman = {
+    /*.memory_location = */ (uint8_t*)0x00000000,  // will be filled at compile time
+    /*.externalAppEntry = */ ui::external_app::pacman::initialize_app,
+    /*.header_version = */ CURRENT_HEADER_VERSION,
+    /*.app_version = */ VERSION_MD5,
+
+    /*.app_name = */ "Pac-Man",
+    /*.bitmap_data = */ {
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0xC0,
+        0x07,
+        0xE0,
+        0x0F,
+        0xF0,
+        0x1F,
+        0xF8,
+        0x07,
+        0xF8,
+        0x01,
+        0x78,
+        0x00,
+        0xF8,
+        0x01,
+        0xF8,
+        0x07,
+        0xF0,
+        0x1F,
+        0xE0,
+        0x0F,
+        0xC0,
+        0x07,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+        0x00,
+    },
+    /*.icon_color = */ ui::Color::yellow().v,
+    /*.menu_location = */ app_location_t::UTILITIES,
+
+    /*.m4_app_tag = portapack::spi_flash::image_tag_noop */ {'\0', '\0', '\0', '\0'},  // optional
+    /*.m4_app_offset = */ 0x00000000,                                                  // will be filled at compile time
+};
+}