open source

Posted on by Jean-Luc Aufranc (CNXSoft) - 6 Comments on Samsung JerryScript is a Lightweight Open Source JavaScript Engine for the Internet of Things

Samsung JerryScript is a Lightweight Open Source JavaScript Engine for the Internet of Things

In the old days, micro-controller programming was all done in assembly or C, but in recent years higher level languages, included interpreted ones such as Python and JavaScript, have made their ways into MCUs with projects such as MicroPython or Espruino (JS) often running on STMicro STM32 ARM Cortex M micro-controllers, but also other platforms such as ESP8266. As I browsed through the Embedded Linux Conference Europe 2016 schedule, I discovered that Samsung worked on it own implementation of a JavaScript engine for the Internet of Things: JerryScript. It is a full implementation of ECMAScript 5.1 standard written in C that can run on micro-controllers with less than 64KB RAM, and less than 200KB storage (160KB footprint with ARM Thumb-2 compilation). JerryScript is comprised of two main components: Parser and Virtual Machine (VM), with the parser performing translation of input ECMAScript application into byte-code than is then executed by the Virtual […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 4 Comments on Embedded Linux Conference & IoT Summit Europe 2016 Schedule

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 […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on Jiayu S3 and S3 Plus Smartphones Get Android 6.0 Firmware Releases with Source Code

Jiayu S3 and S3 Plus Smartphones Get Android 6.0 Firmware Releases with Source Code

Jiayu S3 and S3 Plus are your typical Android smartphones powered by Mediatek MT6752/MT6753 octa core Cortex A53 processor with 3GB RAM, 16GB flash, and a 5.5″ touch screen display. The news here is that Jiayu Germany (a reseller, not the manufacturer), and Team M.A.D (Mediatek Android Developers) comprised of XDA members, have releasing three custom ROMs based on Android 6.0.1 for the smartphone: Cyanogenmod13, Paranoid Android (AOSPA) and AICP (Android Ice Cold Project), which contrast with my Iocean MT6752 smartphone still stuck on Android 4.4.4. I’ll reproduce the technical specifications of Jiayu S3+ phone for reference: SoC- Mediatek MT6753 Octa-core 64-bit ARM Cortex A53 processor @ 1.3 GHz, with ARM Mali-T720 GPU System Memory – 3GB RAM Storage – 16 GB eMMC + micro SD slot up to 64GB Display – 5.5” IPS capacitive touchscreen display; 1920×1080 resolution Connectivity – 802.11 b/g/n/ac Wi-Fi , Bluetooth 4.0, GPS / A-GPS, FM Radio Cellular […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on Google Research PRUDAQ is a 40MSPS ADC Data Acquisition (DAQ) Cape for BeagleBone Black & Green

Google Research PRUDAQ is a 40MSPS ADC Data Acquisition (DAQ) Cape for BeagleBone Black & Green

Engineers at Google Research wanted to measure the strength of a carrier signals without having to use a bulky oscilloscope or DAQ (Data Acquisition) system,  so they looked into several makers boards to achieve this task, eventually decided to go with BeagleBone Black / Green, and created their own PRUDAQ cape capable of sampling 40 million samples per second, and open source it all. PRUDAQ cape specifications: Dual-channel simultaneously-sampled 10-bit ADC (Analog Devices AD9201) Up to 20MSPS per channel (40MSPS total) theoretical 0-2V input voltage range (DC coupled) 4:1 analog switches in front of each channel provide a total of 8 single-ended analog inputs. (See here for differential input) SMA jacks for direct access to the 2 ADC channels Flexible clock options: External input via SMA jack Internal on-board 10MHz oscillator Programmable clock from BeagleBone GPIO pins Powered via BeagleBone headers – no external power needed Fully exposed BeagleBone headers […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 5 Comments on SiFive Introduces Freedom U500 and E500 Open Source RISC-V SoCs

SiFive Introduces Freedom U500 and E500 Open Source RISC-V SoCs

Open source used to be a software thing, with the hardware design being kept secret for fear of being copied, but companies such as Texas Instruments realized that from a silicon vendor perspective it would make perfect sense to release open source hardware designs with full schematics, Gerber files and SoM, to allow smaller companies and hobbyists, as well as the education market, normally not having the options to go through standard sales channels and the FAE (Field Application Engineer) support, to experiment with the platform and potentially come up with commercial products. That’s exactly what they did with the Beagleboard community, but there’s still an element that’s closed source, albeit documented: the processor itself. But this could change soon, as SiFive, a startup founded by the creators of the free and open RISC-V architecture, has announced two open source SoCs with Freedom U500 processor and Freedom E300 micro-controller. Freedom […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 21 Comments on AOMedia AV1 is a Royalty-free, Open Source Video Codec Aiming to Replace VP9 and Compete with H.265

AOMedia AV1 is a Royalty-free, Open Source Video Codec Aiming to Replace VP9 and Compete with H.265

The Alliance for Open Media, or AOMedia, is a new non-profit organization founded in 2015 by Amazon, Cisco, Google, Intel Corporation, Microsoft, Mozilla, and Netflix, and more recently joined by AMD, ARM, and NVIDIA, whose first project is to develop AV1 royalty-free and open video codec and format to provide an alternative to H.265 / HEVC, and a successor to VP9. The project is a team effort combining teams working on Daala, Thor, and VP10 video codecs, and while AFAIK, AV1 specifications have not been released yet (target: Q1 2017), the organization has already released an early implementation of AV1 video decoder and encoder under the combination of an BSD-2 clause license and the Alliance for Open Media Patent License 1.0 , which can be found on googlesource.com. So I’ve had a quick my myself following the instructions, by first downloading one uncompressed YUV4MPEG sample:

and the source code:

[…]

Posted on by Jean-Luc Aufranc (CNXSoft) - 26 Comments on Open Source, Modular and Upgradeable EOMA68 CPU Card, Laptop and Micro Desktop Launched (Crowdfunding)

Open Source, Modular and Upgradeable EOMA68 CPU Card, Laptop and Micro Desktop Launched (Crowdfunding)

Rhombus Tech has been working on EOMA68 standard for CPU modules based on PCMCIA at least since 2012, and after previous difficulties, they showcased a laptop prototype taking OEMA68 CPU cards at the beginning of the year, and they’ve now launched a CrowdSupply campaign selling an EOMA68 CPU card based on Allwinner A20 processor, as well as corresponding laptop and micro desktop housings that are both open source, and upgradeable with faster EOMA68 CPU card once/if they become available. Current EOMA68 CPU card specifications:   SoC –  Allwinner A20 dual core ARM Cortex A7 processor @ 1.2 GHz with Mali-400MP2 GPU System Memory – 2GB RAM Storage – 8GB NAND flash + micro SD slot Video Output – micro HDMI Interface (for 2nd monitor) USB – micro USB OTG port Compliant with EOMA68 standard Two versions of the CPU card are offered with different pre-installed firmware: “Libre Tea Computer Card” […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on Micrium µC/OS RTOS Is Now Free for Makers and Startups

Micrium µC/OS RTOS Is Now Free for Makers and Startups

According to UBM embedded market study for 2015, Micrium µC/OS real-time operating system only came second after FreeRTOS when the company asked close to 1,000 engineers and managers around the world which operating systems they were currently using in their embedded products. The OS appears to be particularly popular in Asia, and the results are all the more impressive considering it’s a commercial operating systems. But Micrium decided to bring more people on board by announcing a free version called µC/OS for Makers targeting hobbyists and startups (<$100k revenues) in February earlier this year. The real-time operating system includes a preemptive multitasking real-time kernel with optional round robin scheduling, has a low footprint (6K to 24K bytes code space, 1K+ bytes data space), support various types of targets including ARM Cortex-M and Cortex-A based MCU and processors such as STMicro STM32,  NXP Kinetis, Cypress PSoC5, etc.., as well as Atmel […]

UP 7000 x86 SBC