中文 |
Full name of VSF is "Versaloon Software Framework". VSF is an open-source software framework for embedded applications based on Apache2 license. VSF includes hal, a pre-emptive multi-thread kernel, services and components. VSF is implemented by C language with object-oriented programming methods(PLOOC).
| Name | Description |
|---|---|
| document | document |
| doxygen | configuration of doxygen |
| example | demo codes |
| hardware | hardware of VSF development boards |
| patch | some patches(for 3rd-party components, etc) |
| script | |
| cmake | cmake scripts |
| source | source code of VSF |
| component | component(filesystem, stacks, UI, drivers, etc) |
| hal | hardware abstraction layer(ARCH support, chip drivers) |
| kernel | VSF pre-emptive/collaborative kernel |
| osa_service | software services based on kernel |
| service | software services |
| shell | shell to use application softwares for other systems |
| utilities | base software utilities(preprocessor, compiler, list, etc) |
Pre-emptive kernel based on event-driven architecture, supporting mcs51, 8bit MCU, 32/64 bit ARM, riscv, x86, etc.
- event-driven architecture, sleep if no event occured, lower-power naturally
- in pre-emptive mode, task switch is implemented by hardware swi(software interrupt), priority of task is the priority of the swi.
- pre-emptive scheduling for tasks with different priority, collaborative scheduling for tasks with the same priority
- can run in other RTOS as a task, or as swi ISR
- different tasks
- event handler task -- minimum resources usage, 20 bytes ram usage for minimum configuration, 40 bytes ram usage for normal configuration
- pt task
- thread with dedicated stack -- depending on setjmp in libc
- fsm task
- other tasks in shell, eg pthread
- IPC: semaphore, mutex, trigger, queue, etc
- Reasonable framework for code re-use
- declarative development model
- standard interface, standard port for 3rd-party components
- software components
- distbus -- distributed bus framework
- fifo
- heap
- json
- pool
- stream
- trace
- Components
- fs -- filesystem with vfs support
- input -- input sub-system
- mal -- memory abstraction layer(normally known as 'block' device)
- scsi -- SCSI device
- tcpip -- TCPIP stack and netdrv drivers
- ui -- UI and display drivers
- usb -- USB host/slave stacks
- bt -- bt stack(using btstack)
- standard hal interface and API -- eg: vsf_spi_init can be used with hardware SPI, GPIO emulated SPI, SPI from external usb device, etc
- IP core driver -- simplify porting by implement clock, reset, interrupt functions which is not provided by IP core
- template for different intefaces and functionalities
- different level of API
- lv0 -- for porting
- lv1 -- for user, implement by template
- lv2 -- for specific application, eg: arduino
- interfaces
- PM
- GPIO
- SPI
- I2C
- PWM
- ADC
- SWI
- USART
- FLASH
- USB
- ethernet
To use applications from other system, shell can be used.
- SDL -- use applications based on SDL directly
- linux -- use applications based on linux directly
- posix
- devfs
- socket
- console
- libraries
- libusb
- libgen
- libsdl2
- libcurl
- etc
| Software | Path | License | Link |
|---|---|---|---|
| btstack | source/component/3rd-party/btstack/raw | Other | https://github.com/bluekitchen/btstack |
| coremark | source/component/3rd-party/coremark/raw | Apache | https://github.com/eembc/coremark |
| freetype | source/component/3rd-party/freetype/raw | FreeType | https://freetype.org/ |
| zlib | source/component/3rd-party/zlib/raw | zlib | http://zlib.net/ |
| nuklear | source/component/3rd-party/nuklear/raw | MTI | https://github.com/Immediate-Mode-UI/Nuklear |
| nnom | source/component/3rd-party/nnom/raw | Apache 2.0 | https://github.com/majianjia/nnom |
| lua | source/component/3rd-party/lua/raw | MIT | https://www.lua.org/ |
| lwip | source/component/3rd-party/lwip/raw | BSD | https://savannah.nongnu.org/projects/lwip/ |
| libpng | source/component/3rd-party/libpng/raw | PNG2 | https://libpng.sf.net |
| libjpeg-turbo | source/component/3rd-party/libjpeg-turbo/raw | BSD | https://libjpeg-turbo.org/ |
| SDL_ttf | source/shell/media/sdl2/3rd-party/SDL_ttf | zlib | https://hg.libsdl.org/SDL_ttf/ |
| SDL_image | source/shell/media/sdl2/3rd-party/SDL_image | zlib | https://hg.libsdl.org/SDL_image/ |
| lvgl | source/component/3rd-party/lvgl/raw/lvgl | MIT | https://lvgl.io/ |
| lv_lib_freetype | source/component/3rd-party/lvgl/extension/lv_lib_freetype/raw | MIT | https://lvgl.io/ |
| CMSIS | source/utilities/compiler/arm/3rd-party/CMSIS | Apache 2.0 | https://github.com/ARM-software/CMSIS_5 |
| evm | source/component/3rd-party/evm/raw | Apache 2.0 | https://github.com/scriptiot/evm |
| LingLongGUI | source/component/3rd-party/LingLongGUI/raw | Apache 2.0 | https://gitee.com/gzbkey/LingLongGUI |
| PLOOC | source/utilities/3rd-party/PLOOC/raw | Apache 2.0 | https://github.com/GorgonMeducer/PLOOC |
| mbedtls | source/component/3rd-party/mbedtls/raw | Apache 2.0 | https://tls.mbed.org/ |
| GuiLite | source/component/3rd-party/GuiLite/raw | Apache 2.0 | https://github.com/idea4good/GuiLite |
| Segger_RTT | source/component/3rd-party/segger/raw/RTT | segger | https://wiki.segger.com/RTT |
| Segger_SystemView | source/component/3rd-party/segger/raw/SystemView | segger | https://wiki.segger.com/SystemView |
| nuconsole | source/component/3rd-party/nuconsole/raw | nuvoton | https://www.nuvoton.com.cn/ |
| AIC8800M_SDK | source/hal/driver/AIC/AIC8800/vendor | aic | http://www.aicsemi.com/ |
| awtk | LGPL 2.1 | https://www.zlg.cn/index/pub/awtk.html | |
| littlefs | source/component/3rd-party/littlefs/raw | BSD | https://github.com/littlefs-project/littlefs |
| getopt_long | source/shell/sys/linux/lib/glibc/3rd-party | OpenBSD | https://github.com/openbsd/src |
| setjmp | source/hal/arch/x86/win | BSD |