CrowdSupply项目：便携式、开源RISC-V SoC开发套件Precursor
crowdsupply刚上线一个众筹项目 - 称之为precursor的便携式、开源risc-v soc开发套件，使用了分别来自xilinx和lattice的两颗流行的fpga。
从外观上看，它像极了一个智能手机，它号称，通过编程，你确实可以把它当成一个智能手机或平板电脑使用，且你可以对它有完全的控制，因为你可以编程它的每一个bit，沉到硬件的最底层！
套件的正面照片
背面照片
拆开了由以下一些部分组成：
一块电路板
一个单色的lcd屏
一个键盘
看看键盘的电路板：
内部的结构：
高度安全、完全可信任
从下面的对比图中可以看到其主要的功能：
再跟其它的fpga开发板比较一下：
价格高是有原因的。
下面是其结构框图：
功能特性：
made for developers
no adhesives holding the bezels in place – just one screw driver is all it takes
want to add hardware? maybe a cellular modem? no problem!
battery compartment is a blank check for your peripherals
install a smaller battery for more space
flex pcb breakout for 8x fpga gpio into the battery compartment
bezel is made out of fr-4, and can be user-customized to hold additional components
inspect, modify and compile your soc and embedded controller from source
all source fileshosted on githubfor convenient fork, pull request, and issue tracking
open source pcb and case design
easy-access developer's cable (included)
low-level debugging (gdb + chipscope) and firmware flashing via developer's cable plugged into a custom raspberry pi hat (included)
middleware debugging via usb cable via wishbone tunnel
open source to the core
extendable and modifiable
slim and light mobile form factor
6063 alloy aluminum case -– 3d files provided, so you can mill your own case!
fr-4 front bezel -– pcb source provided
abs + pc polymer antenna radome -– 3d printable
69 mm x 138 mm x 7.2 mm
96 grams reference weight
compare to iphone x at 70.9 mm x 143.6 mm x 7.7 mm and 174 grams
accessible mechanical design
user-customizable cpus
manages power, standby, and charging functions
tested with 18 mhz vexrisc-v, rv32i, no cache
-l1 speed grade for longer battery life
tested with 100 mhz vexrisc-v, rv32imac + mmu, 4k l1 i/d cache
xilinx xc7s50 primary system on chip (soc) fpga
ice40up5k secondary embedded controller (ec) fpga
16 mb external sram
128 mb flash
100 mhz ddr 8-bit wide bus for fast xip code performance
dual hardware trng
external discrete noise generator
in-soc ring oscillator based trng
inspectable i/o
physical keyboard with changeable layout overlays
200 ppi black and white lcd (336 x 536 resolution), 100% inspectable with standard optical microscope
both keyboard and lcd are backlit for night-time use
modular keyboard pcb -- customize layouts, add sensors, or swap in a touch surface
audio with safe defaults
integrated 0.7 w speaker for notifications
vibration motor
3.5 mm headset jack
no integrated microphone -- audio surveillance is not possible when headset is unplugged
integrated wi-fi
sandboxed in a hardware-delineated untrusted domain
silicon labs wf200c chipset
usb type-c port
supports charging at 5 v; over-voltage protection tolerant to 20 v
power negotiation to 5 v @ 1.5 a (source and sink)
supports legacy usb 2.0 full-speed phy
basic drp negotiation hardware support
1100 mah li-ion battery
approx. 100 hours standby with wi-fi + embedded controller + static display enabled
approx. 700 mw on-state (most features enabled and active, backlight off) power draw, or 5.5 hours continuous use
integrated gas gauge for more accurate battery life estimate
full charge in about three hours
runtime depends on user application
anti-tamper features
user-sealable metal can for trusted components
dedicated real-time clock (rtc) with basic clock integrity monitoring
power monitors trip reset in case of power glitches
always-on accelerometer/gyro to detect movement in standby
support for instant secure erase via battery-backed aes key and self-destruct circuit
原文标题：便携、安全、开源risc-v soc开发套件
文章出处：【微信公众号：fpga入门到精通】欢迎添加关注！文章转载请注明出处。
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边缘计算可以加强智能化吗
从外观上看，它像极了一个智能手机，它号称，通过编程，你确实可以把它当成一个智能手机或平板电脑使用，且你可以对它有完全的控制，因为你可以编程它的每一个bit，沉到硬件的最底层！
套件的正面照片
背面照片
拆开了由以下一些部分组成：
一块电路板
一个单色的lcd屏
一个键盘
看看键盘的电路板：
内部的结构：
高度安全、完全可信任
从下面的对比图中可以看到其主要的功能：
再跟其它的fpga开发板比较一下：
价格高是有原因的。
下面是其结构框图：
功能特性：
made for developers
no adhesives holding the bezels in place – just one screw driver is all it takes
want to add hardware? maybe a cellular modem? no problem!
battery compartment is a blank check for your peripherals
install a smaller battery for more space
flex pcb breakout for 8x fpga gpio into the battery compartment
bezel is made out of fr-4, and can be user-customized to hold additional components
inspect, modify and compile your soc and embedded controller from source
all source fileshosted on githubfor convenient fork, pull request, and issue tracking
open source pcb and case design
easy-access developer's cable (included)
low-level debugging (gdb + chipscope) and firmware flashing via developer's cable plugged into a custom raspberry pi hat (included)
middleware debugging via usb cable via wishbone tunnel
open source to the core
extendable and modifiable
slim and light mobile form factor
6063 alloy aluminum case -– 3d files provided, so you can mill your own case!
fr-4 front bezel -– pcb source provided
abs + pc polymer antenna radome -– 3d printable
69 mm x 138 mm x 7.2 mm
96 grams reference weight
compare to iphone x at 70.9 mm x 143.6 mm x 7.7 mm and 174 grams
accessible mechanical design
user-customizable cpus
manages power, standby, and charging functions
tested with 18 mhz vexrisc-v, rv32i, no cache
-l1 speed grade for longer battery life
tested with 100 mhz vexrisc-v, rv32imac + mmu, 4k l1 i/d cache
xilinx xc7s50 primary system on chip (soc) fpga
ice40up5k secondary embedded controller (ec) fpga
16 mb external sram
128 mb flash
100 mhz ddr 8-bit wide bus for fast xip code performance
dual hardware trng
external discrete noise generator
in-soc ring oscillator based trng
inspectable i/o
physical keyboard with changeable layout overlays
200 ppi black and white lcd (336 x 536 resolution), 100% inspectable with standard optical microscope
both keyboard and lcd are backlit for night-time use
modular keyboard pcb -- customize layouts, add sensors, or swap in a touch surface
audio with safe defaults
integrated 0.7 w speaker for notifications
vibration motor
3.5 mm headset jack
no integrated microphone -- audio surveillance is not possible when headset is unplugged
integrated wi-fi
sandboxed in a hardware-delineated untrusted domain
silicon labs wf200c chipset
usb type-c port
supports charging at 5 v; over-voltage protection tolerant to 20 v
power negotiation to 5 v @ 1.5 a (source and sink)
supports legacy usb 2.0 full-speed phy
basic drp negotiation hardware support
1100 mah li-ion battery
approx. 100 hours standby with wi-fi + embedded controller + static display enabled
approx. 700 mw on-state (most features enabled and active, backlight off) power draw, or 5.5 hours continuous use
integrated gas gauge for more accurate battery life estimate
full charge in about three hours
runtime depends on user application
anti-tamper features
user-sealable metal can for trusted components
dedicated real-time clock (rtc) with basic clock integrity monitoring
power monitors trip reset in case of power glitches
always-on accelerometer/gyro to detect movement in standby
support for instant secure erase via battery-backed aes key and self-destruct circuit
原文标题：便携、安全、开源risc-v soc开发套件
文章出处：【微信公众号：fpga入门到精通】欢迎添加关注！文章转载请注明出处。
谁是iPhone8的最强对手？小米6：配置残暴+颜值逆天！
数据挖掘的四类方法
树莓派基金会正式发布了一个全新的版本树莓派4
智能电子屏的应用将给智能家居带来全新的体验
工业机器人之码垛机器人的应用优势
CrowdSupply项目：便携式、开源RISC-V SoC开发套件Precursor
国芯思辰｜拍字节新型3D铁电存储器(VFRAM)PB85RS128C用于医用额温枪，写入周期达100万次
智能传感器的种类和结构/特点/作用/实现
研究者如何研究SLS和IS的肿瘤免疫微环境
水质浮标站的作用以及功能特点的介绍
超声波风速风向仪换能器安装在壳体上有共振如何解决
魅族pro7最新消息：魅族PRO7什么时间发布：你准备抢购了吗？
引流利器！普渡机器人“葫芦”上岗南里奥巴西烤肉店
河北稳控科技有限公司VTN416多通道振弦采集仪
Intersil为UCF捐赠面积十万平方英尺的晶圆工厂
案例分析：FLIR AX8红外热像仪实时监控收集温度数据，助力农业自动化！
借助机器学习技术，计算机可以更好地识别物体
移远通信全新3GPP NTN R17模组正式上线，助力实现空天地海网络全覆盖
“人形机器人”浪潮下国产力传感器厂商的突围之路 | MIR DATABANK
边缘计算可以加强智能化吗