Getting Started with MultiArch (armel / armhf) in Ubuntu

Until now, I used xapt and dpkg-cross to install cross libraries for armel, but since I’ve upgraded to Ubuntu 12.04, it appears to be broken. I’ve contacted Linaro about this issue, and the “cross-building” expert at Linaro (wookey) recommended me to use multiarch instead, as xapt/dpkg-cross will be eventually deprecated. He provided me an example showing how-to use multiarch to build Chromium. I’ve been looking for a “How-to multiarch”, but haven’t been able to find something really clear and simple, so I thought I would post it here. In the example, they used a chroot for cross-building, which is probably a good idea to avoid messing up with the system. It’s also possible multiarch is not 100% reliable, and I’ve read stories where people messed up their system when using multiarch with i386 (32-bit) and amd64 (64-bit). Preparing a chroot for cross-building I’ll use a 32-bit Ubuntu precise chroot, but […]

Android NDK Revision 8 Adds MIPS Architecture Support

Google has just released Android Native Development Kit Revision 8, the Android SDK that allows developers to reuse C/C++ code. This version adds support for MIPS architecture and fixes a few bugs. Here’s the changelog of the new features and most important bug fixes: Added support for the MIPS ABI, which allows you to generate machine code that runs on compatible MIPS-based Android devices. Major features for MIPS include MIPS-specific toolchains, system headers, libraries and debugging support. For more details regarding MIPS support, see docs/CPU-MIPS.htmlin the NDK package. Fixed a typo in GAbi++ implementation. Fixed an issue in which fails to copy libsupc++.*. You can download Android NDK version 8 to develop native apps for MIPS or take advantage of the new bug fixes. Previously, MIPS provided the Android NDK on their own website, but this version might be phased out, as MIPS support is now part of  the […]

Khadas Edge2 Arm mini PC

Ziilabs ZMS-40 Decodes 6 HD Videos and Maps them to 3D Objects Simultaneously!

Ziilabs uploaded an impressive video that shows the Ziilabs ZMS-40 simultaneously decoding 6 High Definition Videos (although they don’t say if it’s 720p or 1080p) with 5 H.264 videos and 1 VP8/WebM video and rendering them on 3D objects via OpenGL ES. That’s quite amazing, but the next question could be why would you need that much processing power in a chip aimed at tablets? Augmented reality perhaps…

Embedded Artists NXP LPCXpresso Motor Control Kit Promotion

Embedded Artist and NXP have jointly designed the LPCXpresso Motor Control Kit to easily get started with motor control prototyping. This platform is based on NXP LPCXpresso MCUs and can control BLDC (Brushless DC), BLAC (Brushless AC), stepper and dual brushed DC motors. This is not a new design (2010), but Embedded Artist and NXP are discounting their development kit by 50% for a limited period, which brings the price of the kit to 149 Euros, instead of 299 Euros. The kit includes: LPCXpresso Motor Control Board LPCXpresso LPC1114 Board (The “stick” on the left in the picture above) LPCXpresso Eclipse-based IDE and GNU compiler BLDC Motor with hall sensors 24V Power supply (60W) Here are the specifications of the Motor Control Board: Controller MCU • Socket for LPCXpresso LPC1114 and LPC1343 • Socket for LPCXpresso LPC176x • Socket for LPC1xxx in PLCC44 • Expansion connector for control by LPC1800/LPC4000/LPC2900 […]

Tizen 1.0 SDK and Source Code Release

The Tizen Technical Steering Group has announced, today, the release of Tizen 1.0 “Larkspur”. Tizen 1.0 release provides several new SDK features and improvements including: Simulator: A new browser-based tool that supports the Tizen APIs and allows you to run and debug your web applications, and simulate running applications with various device profiles. IDE: Enhancements include more flexibility around templates and debugging tools. Emulator: Significantly improved emulator performance through Intel’s Hardware Acceleration Manager for Windows and OpenGL acceleration for Linux. Updates to the platform source code include: Web: Support for additional features of W3C/HTML5 specification Location: Support for POI (Point of Interest) and route search Connectivity: Wi-Fi Direct key features added You can see the full list of changes by reading the release notes for the SDK and the source code. Tizen has also added a bug tracker and a wiki for the community and a few back-end changes have been […]

Yocto Project Release 1.2 Announced

The Yocto Project Release 1.2 has just been announced. This release codenamed “Denzil” and based on Poky 7.0 is the third release of the project. The project was announced in October 2010 to provide developers with greater consistency in the software and tools they’re using across multiple architectures for embedded Linux development. Yocto Project 1.2 Features: HOB redesigned with new user interface and work flow. HOB is a GUI based tool for users to customize and build an embedded Linux image in a more intuitive and easier way. Build appliance, which is a set of changes and enhancements to enable users to build a virtual machine image running Linux built with the Yocto Project. Within the Linux running on the virtual machine, users can customize and build their own customized embedded Linux images. Error message handling improvement, making error message more efficient, useful and accurate to users. New kernel update […]

UP 7000 SBC

Installing Ubuntu 12.04 LTS in Acer Aspire One D255E Netbook

I previously installed Ubuntu 10.04 LTS on my Acer Aspire One D255E network (Atom N455 with GMA3150 GPU), and there were quite a few issues to solve with Ethernet, Wifi and the SD Card but eventually, everything worked fine. I have now upgraded it to Ubuntu 12.04 LTS, using the instructions I posted yesterday. The good news is that WiFi and the SD card worked right after the installation, but Ethernet would not work and there were 2 new issues: The system was very slow The touchpad would not work It might be possible that the touchpad and Ethernet issues do not occur by doing a fresh installation with Ubuntu 12.04 ISO, but I haven’t tried. Improving Ubuntu 12.04 Performance I noticed that if you just moved the mouse over the launcher, compiz (composting window manager handling 3D acceleration via OpenGL) would use 100% CPU. I ran glxinfo to verify […]

Upgrading Ubuntu 10.04 LTS to Ubuntu 12.04 LTS

If you are using Ubuntu 10.04 LTS and were expecting Ubuntu 12.04 LTS to be available in the Upgrade Manager, you were wrong. Well, at least I was wrong… Canonical won’t make it available via the Upgrade Manager in the first release, but only in July with Ubuntu 12.04.1 release, and the company recommends that most LTS users wait until then before upgrading to 12.04. But if you can’t possibly wait that long, you can run: do-release-upgrade -d or update-manager -d to upgrade from Ubuntu 10.04 (Lucid Lynx) to Ubuntu 12.04 (aka Precise Pangolin). The first command will run in the terminal, the second will start the Update Manager and allow you to select “New Ubuntu release ‘12.04’ is available”. For details on why you should NOT upgrade yet, see The first time I tried to upgrade I had the following errors: Could not calculate the upgrade An unresolvable […]

Khadas VIM4 SBC