Support for building and running external apps (#112)

ExternalApps/HelloWorld/CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.16)
+
+set(TACTILITY_SKIP_SPIFFS 1)
+add_definitions(-DESP_TARGET)
+add_compile_definitions(ESP_TARGET)
+
+add_definitions(-DLV_CONF_PATH=../../../Boards/Simulator/Source/lv_conf.h)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+set(EXTRA_COMPONENT_DIRS "../../Libraries/elf_loader")
+
+project(HelloWorld)
+
+include(elf_loader)
+project_elf(HelloWorld)
+

ExternalApps/HelloWorld/build.sh

@@ -0,0 +1,4 @@
+rm sdkconfig
+cp ../../sdkconfig sdkconfig
+cat sdkconfig.override >> sdkconfig
+idf.py build

ExternalApps/HelloWorld/main/CMakeLists.txt

@@ -0,0 +1,16 @@
+file(GLOB_RECURSE SOURCE_FILES Source/*.c)
+
+idf_component_register(
+    SRCS ${SOURCE_FILES}
+)
+
+add_prebuilt_library(Tactility ../../../build/esp-idf/Tactility/libTactility.a)
+add_prebuilt_library(TactilityC ../../../build/esp-idf/TactilityC/libTactilityC.a)
+add_prebuilt_library(TactilityCore ../../../build/esp-idf/TactilityCore/libTactilityCore.a)
+add_prebuilt_library(TactilityHeadless ../../../build/esp-idf/TactilityHeadless/libTactilityHeadless.a)
+add_prebuilt_library(lvgl ../../../build/esp-idf/lvgl/liblvgl.a)
+
+include_directories("../../../TactilityC/Source")
+include_directories("../../../Libraries/lvgl/src")
+
+target_link_libraries(${COMPONENT_LIB} PRIVATE TactilityC Tactility TactilityCore TactilityHeadless lvgl)

ExternalApps/HelloWorld/main/Source/main.c

@@ -0,0 +1,29 @@
+#include <stddef.h>
+#include "TactilityC/app/App.h"
+#include "TactilityC/lvgl/Toolbar.h"
+
+/**
+ * Note: LVGL and Tactility methods need to be exposed manually from TactilityC/Source/TactilityC.cpp
+ * Only C is supported for now (C++ symbols fail to link)
+ */
+static void onShow(AppContextHandle context, lv_obj_t* parent) {
+    lv_obj_t* toolbar = tt_lvgl_toolbar_create(parent, context);
+    lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
+
+    lv_obj_t* label = lv_label_create(parent);
+    lv_label_set_text(label, "Hello, world!");
+    lv_obj_align(label, LV_ALIGN_CENTER, 0, 0);
+}
+
+int main(int argc, char* argv[]) {
+    tt_set_app_manifest(
+        "Hello World",
+        NULL,
+        NULL,
+        NULL,
+        onShow,
+        NULL,
+        NULL
+    );
+    return 0;
+}

ExternalApps/HelloWorld/sdkconfig.override

@@ -0,0 +1 @@
+CONFIG_PARTITION_TABLE_SINGLE_APP=y