Embedded Linux Conference & IoT Summit Europe 2016 Schedule

Embedded Linux Conference & IoT summit 2016 first took place in the US in April, but the events are now also scheduled in Europe on October 11 – 13 in Berlin, Germany, and the schedule has now been published. Even if you are no going to attend, it’s always interesting to find out more about the topic covered in that type of events, so I had a look, and created my own virtual schedule with some of the sessions. Tuesday, October 11 10:40 – 11:30 – JerryScript: An Ultra-lightweight JavaScript Engine for the Internet of Things – Tilmann Scheller, Samsung Electronics JerryScript is a lightweight JavaScript engine designed to bring the success of JavaScript to small IoT devices like lamps, thermometers, switches and sensors. This class of devices tends to use resource-constrained microcontrollers which are too small to fit a large JavaScript engine like V8 or JavaScriptCore. JerryScript is heavily optimized for low memory consumption and runs on platforms with …

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Downloading Files on Baidu, or via HTTP, Bittorrent or Metalink in Linux with BaiduExporter, Aria2 and YAAW

Most firmware files distributed by the manufacturers are uploaded to Baidu, but I’ve found the service not to be always reliable, especially for larger files. In Windows, people are recommended to use Baidu software (BaiduYunGuanjia), but there’s not such tool in Linux, so instead I investigate for command lines tools to download files from Baidu, and this lead me to two interesting tools called Aria2, a “lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, BitTorrent and Metalink”, and YAAW “Yet Another Aria2 Web Frontend” with allow to start and monitor download locally or remotely. But let’s start with the first tool I found: pan-baidu-download, a Python script to download files from Baidu. To install it: We also need to install some dependencies (assuming python 2.7.x is already installed): and then you can start downloading files as follows: But after posting a bug about password-protected download, which was fixed in 2 minutes by the developers, I was informed …

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openPicus Introduces Wi-Fi and GPRS IoT Kits Powered by Microchip PIC24 MCU

openPicus has launched two new development kits for the Internet of Things with either Wi-Fi or GPRS connectivity, based on their FlyportPRO modules featuring a 16-bit Microchip PIC24 MCU, and sharing the same baseboard. These kits can be used as a Web server with firmware update over the air (FOTA) (Wi-Fi version only) among other things, and support TCP, UDP, FTP, & HTTP protocols, as well as MQTT (Message Queue Telemetry Transport), a light weight messaging protocol running on top of the TCP/IP protocol, used when a small code footprint is required and/or network bandwidth is limited. openPicus FlyportPRO Wi-Fi and GPRS modules share mostly the same specifications: MCU – Microchip PIC24FJ256GB206 16-bit MCU @ 32 MHz with 256KB Flash,  96KB RAM External Storage – 16Mbit Flash memory (for FOTA), 64Kbit EEPROM Connectivity GPRS Module – SAGEM HILONC GPRS Transceiver (quad band: 850, 900, 1800, 1900 MHz) with uFL connector for external GPRS antenna Wi-Fi Module – Wi-Fi 802.11g Microchip MRF24WG0MB transceiver …

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SPDY Aims to Make the Web Faster and Replace HTTP

SPDY (pronounce “SPeeDY”) is a new protocol designed by Google that aims at making the web faster and eventually replace HTTP. This new protocol is not a new scheme, so it would be transparent to the user and there would not be a new spdy:// prefix and we would still be using http://. It will always be secure and use tcp port 443 instead of 80 (because of transparent proxies messing up with packets). Most of Google products such as Chrome, Android Honeycomb (They can’t say if ICS is using SPDY…) devices and Google’s servers have already using SPDY protocol for some time, and Google reports some encouraging results. The tested 300 sites from the top 1000 Alexa sites and found an average 40% page load improvement. They also reported some labs tests: *PLT stands for “Page Load Times” in the chart above. Google is not the only company using SPDY. Firefox has recently added SPDY support, so around 50% …

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Web Servers for Embedded Systems

Many network-enabled embedded devices do not have displays and configuration must be done via a webpage. This is the case for modems and routers and possibly for  IP cameras,  networked printers… With a web server, there is no need to develop specific drivers and/or applications for computers connected to the device. You just need to write HTML/Javascript pages and possibly CGI scripts. I’ve already posted a blog post about mathopd for ARM no-mmu targets as this HTTP server is ideal for uCLinux since it does not fork. Today, I’ll list some other HTTP servers that may also be used with embedded processors. Tiny/Turbo/Throttling HTTP server thttpd is a lightweight HTTP server implementing the HTTP/1.1 (minimum) and simple to configure and run. Its executable size is 88K. The description says it does not fork, but fork is called in the source code, so I do not know what that means… It’s is very portable and it can compiles cleanly on most …

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LinuxCon 2011 Presentation: Linux Basics

The fifth and last presentation entitled  “Linux Basics” was presented by Lance Albertson, Systems Administrator and Greg Lund-Chaix, “Open source software geek” at OSUOSL (Oregon State University Open Source Lab) at LinuxCon 2011. Abstract: This presentation comes in two parts: The first part gives an overview of Linux, lists the main Linux distributions and explains which one to choose depending on your requirements. It then focuses on Linux administration with some shell commands, how to set permissions and monitor and control processes. The second part is more like a system administrator tutorial showing you how to use VIM Editor,  the commands to control networking, how to make use of SSH for remote access, explains about package management, services (such as http and mysql) by using Apache and Mysql as examples and configuration management, before finally giving the instructions for installing WordPress once Apache andM ySQL are running. If you want to download the presentation slides, please go to Linux basics (part 1) …

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