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April 15, 2016April 15, 2016 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Software Matters, or How SinoVoIP Crippled Banana Pi M2+ Performance.

The most common way to use a development board is to simply go to the manufacturer website, and download the images from there. They are the ones who made the hardware after all, and they should be the most knowledgeable about their platform. But it may not always be true as tkaiser found out when he ran some Phoronix benchmarks on Banana Pi M2+ (aka BPI M2+) board with SinoVoIP (the manufacturer), Armbian, and Raspbian images. The results speak for themselves. The last three columns are what is of interest here, and in some benchmark Banana Pi M2+ is about 3 times slower with SinoVoIP image compared to Armbian, while with others the performance is quite similar. John The Ripper password cracker benchmark shows a massive difference between distributions… … while FLAC audio encoding not so much. So what’s going on here? First Jon the Ripper is a multi-threaded applications, […]

March 10, 2016March 10, 2016 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Android N Developer Preview Released with Multi-Window Support, PiP, Background Apps Optimizations…

Google has just released an early developer preview of Android 7.0 N (Nutella?) before the OS officially launched later this summer with new features such s multi-window support, TV recording, Picture-in-picture, bundled notifications, and efficiency improvements. So let’s have a look at some of improvements: Multi-window – A new manifest attribute called android:resizableActivity is available for apps targeting N and beyond, allowing your activity to be launched in split-screen modes on phones and tablets. In addition, activities can also go into picture-in-picture mode on devices like TVs by setting android:supportsPictureInPicture to true. Direct reply notifications: Initially an Android Wear only features, the RemoteInput notification API has now been added for smartphones and tablets, and allows user to reply directly within the notification shade. Bundled notifications – The Notification.Builder.setGroup() method can be used to bundle notifications from the same app together. Efficiency Improvements – Doze has been further improved to save […]

March 4, 2016May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Embedded Linux Conference 2016 and OpenIoT Summit 2016 Schedule

The Embedded Linux Conference 2016 and the OpenIoT summit 2016 will take place on April 4 – 6, 2016 in San Diego, California, and over 800 attended will meet including kernel & system developers, userspace developers, and product vendors. The Linux Foundation has recently published the schedule, so I’ve had a look at some of the talks, and designed my own virtual schedule to find out more the current development focus although I won’t attend. Monday April 4 10:40am – 11:30am – Linux Connectivity for IoT by Marcel Holtmann, Intel OTC There are many connectivity solutions that available for IoT. For example Bluetooth Low Energy, 802.15.4, Zigbee, OIC, Thread and others. This presentation will provide and overview of the existing technology and upcoming standard and how they tie into the Linux kernel and its ecosystem. 11:40 – 12:30 – BoF: kernelci.org: A Million Kernel Boots and Counting by Kevin Hilman, […]

February 15, 2016February 15, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

Linaro Connect 2016 Bangkok Schedule – March 7-11, 2016

Linaro Connect Bangkok (BKK16) will take place on March 7 – 11, 2016, and the schedule is now available for the 5-day event with keynotes and sessions. Whether you’re going to attend or not, it’s always interesting to check the schedule to find out what’s going on in terms of ARM Linux development. The five days will focus on work by different Linaro groups, but really sessions are mixed for any given day, and I’ve created a virtual schedule for each day with available information, as Linaro has become a little more closed to the outside than when it was launched a few years ago. Monday 7 – LITE (Linaro IoT & Embedded Group) 1400 – 14:50 – Evolution of the Reference Software Platform Project The Reference Software Platform lead project was introduced in Linaro Connect San Francisco 2015, and since then it evolved and matured with the completion of […]

January 29, 2016 by Jean-Luc Aufranc (CNXSoft) - No Comments

Embedded Systems Conference 2016 Schedule – April 13-14

The Embedded Systems Conference 2016 will take place in Boston on April 13-14, and the organizers have now released the schedule, minus some keynotes, which features four main tracks: Embedded Hardware, Embedded Software, Connected Devices and the Internet of Things (IoT), and the ESC Engineering Theatre. As usual, I’ve gone through the list of talks and composed my own little virtual schedule which ended up with sessions focusing on power management, IoT, and security, as well some optimization and drivers development talks among others, such as patents, and the origin of Gerber files. Wednesday 13 8:00 – 9:00 – Power Management in Embedded Systems by Colin Walls, Embedded Software Technologist, Mentor Graphics The importance of power management in today’s embedded designs has been steadily growing as an increasing number of battery powered devices are developed. In this session, we will discuss design considerations that should be made when starting a […]

October 13, 2015October 13, 2015 by Jean-Luc Aufranc (CNXSoft) - 26 Comments

How to Reduce SD Card Firmware Images Download Size

So I’ve just received a Roseapple Pi board, and I finally managed to download Debian and Android images from Roseapple pi download page. It took me nearly 24 hours to be successful, as the Debian 8.1 image is nearly 2GB large and neither download links from Google Drive nor Baidu were reliable, so I had to try a few times, and after several failed attempt it work (morning is usually better). One way is to use better servers like Mega, at least in my experience, but another way to reduce download time and possibly bandwidth costs is to provide a smaller image, in this case not a minimal image, but an image with the same exact files and functionalities, but optimized for compression. I followed three main steps to reduce the firmware size from 2GB to 1.5GB in a computer running Ubuntu 14.04, but other Linux operating systems should also […]

October 1, 2015October 1, 2015 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

ARM TechCon 2015 Schedule – IoT, Servers, 64-bit ARM, Power Usage Optimization, and More

The ARM Technology Conference (ARM TechCon) will take place on November 10 – 12, 2015, in Santa Clara Convention Center, and just like every year, there will be a free exposition for companies to showcase their latest innovation and/or products, as well as a technical conference with sessions and workshops sorted into various tracks: Automotive/Embedded Vision Embedded IoT Mobile/Connectivity Networking Infrastructure/Servers Tools & Implementation Wearables/Sensors ARM Training Day Sponsored Vendor Training Special Event General Event Software Developers Workshop You can find the complete schedule on ARM TechCon website. Although I won’t attend, I’ve created my own virtual schedule with some of the sessions I found interesting. Tuesday – November 10 8:30 – 9:20 – ARM Vision for Thermal Management and Energy Aware Scheduling on Linux by Ian Rickards (ARM), Charles Garcia-Tobin (ARM), Bobby Batacharia (ARM) This talk will cover the history and where are we going, for ARM’s Power Software (IPA, […]

April 28, 2015April 28, 2015 by Jean-Luc Aufranc (CNXSoft) - No Comments

ZTE ZX296702 Dual Core Cortex A9 SoC Boots Android in 10 Seconds with TuxOnice

ZTE XZ296702 is a dual core Cortex A9 processor with a Mali-400 GPU that targets Android set-top boxes and media players, and while Charbax filmed a video with ZX296702-AD1 development board at Linaro Connect HK, initial patchsets were recently submitted to the Linux ARM Kernel mailing list for XZ296702 SoC and the development board. There aren’t any product page for ZX296702 processor, so instead let’s have a look at the board’s specifications: SoC – ZTE ZX296702 dual core ARM Cortex A9 processor with Mali-400 GPU System Memory – 512 MB RAM Storage – 4GB flash + micro SD card Video Output – HDMI + AV (RCA) Audio Output – HDMI + Stereo audio (2x RCA) Connectivity – Ethernet and Wi-Fi USB – 2x USB 2.0 host ports Power Supply – 5V Considering the board is running Android 4.4, the specs are quite low end, however the developers claim to have […]