$ show lvgl/lv_port_pc_vscode
This repository is a VSCode-based development port of the LVGL embedded GUI library for PC simulation. It provides a complete environment to develop and test LVGL applications on Linux, Windows, and macOS without embedded hardware. The codebase includes a CMake build system, an SDL2-based hardware abstraction layer (HAL) for display and input devices (mouse, keyboard, touchwheel), and optional FreeRTOS integration for simulating real-time behavior. The main entry points are `src/main.c` (single-threaded with a `while(1)` loop) and `src/freertos_main.c` (FreeRTOS task-based), both using the same `sdl_hal_init()` to set up LVGL. The project is essentially a thin wrapper that initializes LVGL, sets up SDL drivers, and runs a demo or user application. Its architecture is straightforward: LVGL submodule, SDL library, and application glue code. The repository is actively maintained, with recent commits and issue triage, and uses current versions of LVGL (v10.0.0) and SDL2. It is a solid but unexceptional project, serving its purpose as a convenient PC simulator for LVGL development.
The LLM identified 2 files worth highlighting for reuse:
Provides a single function `sdl_hal_init()` that creates and configures an LVGL display and input devices (mouse, mousewheel, keyboard) using SDL2. It also attaches a custom mouse cursor image. This function encapsulates all platform-specific initialization and can be reused across projects that need to quickly set up an LVGL+SDL simulation environment with standard input devices. The abstraction is clean and self-contained, depending only on LVGL and SDL.
Implements a generic event object (Event_t) using pthread condition variables and mutexes, with an auto-reset flag to prevent lost wakeups. Provides `event_create`, `event_delete`, `event_signal`, and `event_wait` functions. This is a reusable, self-contained synchronization primitive that can be extracted into any multi-threaded C project requiring simple event signaling, independent of FreeRTOS or LVGL.