2 layers36.8 × 33 mm Adapter, the printed circuit board in 3D

Adapter

Versaloon Software Framework -- a tiny preemptive-capable event-driven incremental software framework for embedded systems

Open in PCBKit

Size: 36.8 × 33 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 5
Nets: 19
Pads: 100
Tracks, vias: 250, 0
Pours: 2
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 17 Apr 2019
Updated: 2 Nov 2026

Overview

Adapter is an open-source printed circuit board by vsfteam, from the vsfteam/vsf repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 36.8 × 33 mm with 5 parts on 19 nets, routed with 250 tracks and 0 vias.

It belongs with the interfaces and adapters boards of this library.

README

README.md

VSF -- Versaloon Software Framework

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).

Overall Framework

Catalogue

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 software for other systems
utilities	base software utilities(preprocessor, compiler, list, etc)

Kernel

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 occurred, 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

Components

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)

HAL -- hardware abstraction layer

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 interfaces and functionalities
interfaces
- PM
- GPIO
- SPI
- I2C
- PWM
- ADC
- SWI
- USART
- FLASH
- USB
- ethernet

Shell

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

3rd-party

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
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/
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/3rd-party/getopt	OpenBSD	https://github.com/openbsd/src
regex	source/shell/sys/linux/lib/3rd-party/regex	OpenBSD	https://github.com/openbsd/src
fnmatch	source/shell/sys/linux/lib/3rd-party/fnmatch	BSD	http://www.jbox.dk/sanos/source/lib/fnmatch.c.html
glob	source/shell/sys/linux/lib/3rd-party/glob	BSD	https://github.com/cloudius-systems/musl
setjmp	source/hal/arch/x86/win	BSD
libtuv	source/shell/sys/linux/lib/3rd-party/libtuv/raw	Apache 2.0	https://github.com/Samsung/libtuv
scgui	source/component/ui/tgui/view/scgui_view/scgui.c&h	MIT	https://gitee.com/li_yucheng/scgui

Parts

Qty	Value	Footprint	References
3	Conn_02x10_Odd_Even	Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical	J1, J2, J3
2	Conn_02x10_Odd_Even	SimonQian:PinSocket_2x10_P2.54mm_Horizontal_2Layer	J0, J4

Questions

How big is the Adapter PCB?

It measures 36.8 × 33 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Adapter use?

5 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Adapter KiCad files?

From the vsfteam/vsf repository on GitHub, at the commit this page was made from: the board is hardware/M484/ext/adapter/adapter.kicad_pcb and its schematic hardware/AC6321A/vsf_ac6321a.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Adapter design in my own project?

Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Interfaces and adapters

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/vsfteam-vsf-adapter" title="Adapter in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/vsfteam-vsf-adapter.jpg" alt="Adapter" width="1200" height="900">

A picture that opens the board, for a README

[![Adapter](https://pcbkit.io/embed/boards/vsfteam-vsf-adapter.jpg?size=s)](https://pcbkit.io/boards/vsfteam-vsf-adapter)

Source

Repository: vsfteam/vsf
Board file: hardware/M484/ext/adapter/adapter.kicad_pcb
Commit: ed71743
Licence: Apache-2.0

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