2 layers25.4 × 33 mm
Pegboard
vsfteam/vsf
Versaloon Software Framework -- a tiny preemptive-capable event-driven incremental software framework for embedded systems
222 parts341Apache-2.0
4 layers34.9 × 30.5 mm
Vsf m484
vsfteam/vsf341Versaloon Software Framework -- a tiny preemptive-capable event-driven incremental software framework for embedded systems
- Size
- 34.9 × 30.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 133
- Pads
- 352
- Tracks, vias
- 863, 123
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 17 Apr 2019
- Updated
- 2 Nov 2026
Overview
Vsf m484 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 4-layer board of 34.9 × 30.5 mm with 81 parts on 133 nets, routed with 863 tracks and 123 vias.
It is built around the SS14 and 1SS400G. Its parts include 27 resistors, 24 capacitors, 9 diodes, 6 connectors and 5 ICs.
Main components
2README
README.mdVSF -- 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
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C7, C8, C9, C15, C16, C22, C24 |
| 7 | TestPoint | SimonQian:TestPoint_SMD | TP1, TP2, TP3, TP4, TP5, TP6, TP7 |
| 5 | 1uF | Capacitor_SMD:C_0402_1005Metric | C4, C13, C20, C21, C23 |
| 4 | 1K | Resistor_SMD:R_0402_1005Metric | R7, R8, R9, R10 |
| 4 | 20pF | Capacitor_SMD:C_0402_1005Metric | C0, C1, C25, C26 |
| 4 | 300 | Resistor_SMD:R_0402_1005Metric | R17, R18, R19, R20 |
| 4 | 33 | Resistor_SMD:R_0402_1005Metric | R12, R14, R15, R16 |
| 3 | 0 | Resistor_SMD:R_0402_1005Metric | R2, R3, R13 |
| 3 | 100K | Resistor_SMD:R_0402_1005Metric | R21, R22, R23 |
| 3 | NC | Resistor_SMD:R_0402_1005Metric | R24, R25, R26 |
| 2 | 100uF | Capacitor_SMD:C_1206_3216Metric | C5, C6 |
| 2 | 10K | Resistor_SMD:R_0402_1005Metric | R1, R11 |
| 2 | 2.2uF | Capacitor_SMD:C_0402_1005Metric | C18, C19 |
| 2 | 33R | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 2 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C14, C17 |
| 2 | AP1117-33 | Package_TO_SOT_SMD:SOT-89-3 | U1, U4 |
| 2 | Crystal_GND24 | Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm | Y0, Y2 |
| 2 | GREEN | LED_SMD:LED_0402_1005Metric | D5, D7 |
| 2 | RED | LED_SMD:LED_0402_1005Metric | D4, D6 |
| 2 | SS14 | Diode_SMD:D_SMA | D0, D8 |
| 2 | USB_B_Micro | Connector_USB:USB_Micro-B_Wuerth_629105150521 | J2, J4 |
| 1 | 10uF | Capacitor_SMD:C_0402_1005Metric | C27 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C28 |
| 1 | 1SS400G | Diode_SMD:D_0603_1608Metric | D3 |
| 1 | 200R %1 | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 51K | Resistor_SMD:R_0402_1005Metric | R0 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J5 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J6 |
| 1 | Conn_02x10_Odd_Even | SimonQian:PinSocket_2x10_P2.54mm_Horizontal_2Layer_NoSilks | J1 |
| 1 | GD25Q_8P | simonqian:WSON-8_8x6mm_P1.27mm | U2 |
| 1 | LED | LED_SMD:LED_0402_1005Metric | D2 |
| 1 | LED_ARGB | SimonQian:LED_RGB_0603 | D1 |
| 1 | M4842U_64 | Package_QFP:LQFP-64_7x7mm_P0.4mm | U0 |
| 1 | NUC120_64 | Package_QFP:LQFP-64_10x10mm_P0.5mm | U3 |
| 1 | SW_DIP_x01 | SimonQian:Key_2Pin_2.9X4.3 | SW0 |
| 1 | USB_A | SimonQian:USB_AF_Sink | J3 |
Questions
How big is the Vsf m484 PCB?
It measures 34.9 × 30.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Vsf m484 use?
81 parts, built around the SS14 and 1SS400G. 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 Vsf m484 KiCad files?
From the vsfteam/vsf repository on GitHub, at the commit this page was made from: the board is hardware/M484/vsf_m484.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 Vsf m484 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).
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