Operating Systems Category - Page 984 of 1001 - CNX Software

March 15, 2011November 22, 2011 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Qemu Linaro Versatile Express Image on Ubuntu 10.10

I’ve installed qemu-linaro and run an ARM image based on the instructions on https://wiki.linaro.org/PeterMaydell/QemuVersatileExpress. I used Ubuntu 10.10 desktop edition. First, install the Linaro images tools: sudo apt-get install linaro-image-tools Download the Linaro release and versatile hardware pack: wget http://releases.linaro.org/platform/linaro-n/nano/alpha-3/linaro-natty-nano-tar-20110302-0.tar.gz wget http://releases.linaro.org/platform/linaro-n/hwpacks/alpha-3/hwpack_linaro-vexpress_20110302-0_armel_supported.tar.gz You can download another hwpack for omap3, i.mx51, pandaboard, beagleboard, ST U8500, etc.. if needed at http://releases.linaro.org/platform/linaro-n/hwpacks/alpha-3/ Download the source, extract it, then configure, build and install qemu linaro: wget http://launchpad.net/qemu-linaro/trunk/2011.03-1/+download/qemu-linaro-0.14.50-2011.03-1.tar.gz tar xzvf qemu-linaro-0.14.50-2011.03-1.tar.gz cd qemu-linaro-0.14.50-2011.03-1 ./configure –prefix=/usr make sudo make install Make sure the prefix is set to /usr in order to overwrite any previous version of Qemu (It installed qemu linaro in /usr/local/ instead in my case). Failure to do so may generate the following error during linaro-media-create: qemu: fatal: cp15 insn ee1d6f70 Instead of compiling qemu, you can install qemu-linaro with apt-get (this will avoid possible version issues between linaro-media-create and qemu): sudo add-apt-repository ppa:linaro-maintainers/tools […]

March 14, 2011May 2, 2012 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Cross compiling SQLite for ARM and MIPS

Following my blog entry about Databases for Linux Embedded Systems, here are the instructions to cross-compile SQlite. First download the latest version of SQLite amalgamation with autoconf script (version 3.75): wget http://www.sqlite.org/sqlite-autoconf-3070500.tar.gz Extract the source code: tar xzvf sqlite-autoconf-3070500.tar.gz Configure and build the source code. I’ll use mipsel-linux-gcc, but any other cross-compiler could be used. cd sqlite-autoconf-3070500 ./configure –host=mipsel-linux –target=mipsel-linux –prefix=/home/jaufranc/edev/sqlite-mips make make install At this point the library is correctly configured and installed, so you’d just need to copy the relevant files to your target board (skip include and share directories and libsqlite3.a) . Let’s check the size of the required files: ls -l ../sqlite-mips/bin/ -rwxr-xr-x 1 jaufranc jaufranc 125513 2011-03-14 14:21 sqlite ls -l ../sqlite-mips/lib/libsqlite3.so.0.8.6 -rwxr-xr-x 1 jaufranc jaufranc 2087584 2011-03-14 14:21 ../sqlite-mips/lib/libsqlite3.so.0.8.6 sqlite binary is 122.57KB and the dynamic library 2038.65KB. Let’s see if we can optimize the binary size with compilation flags and by disabling some […]

March 9, 2011 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Video Wall with Beagleboards and ffmpeg

There was a 6-Screen Video Wall at Embedded World 2011, powered by 6 Beagleboard xM (based on Texas Instruments OMAP 3 running @ 1Ghz – Cost: 149 USD / piece), connected vi Ethernet. In the video they explain that the system is running Linux Ångström and the video is played and synchronized over Ethernet with ffmpeg. After doing some research on how to do this, they are probably using omapfbplay with netsync enabled which you can compile as follows: NETSYNC=y OMAPFB=y make However, if you are using Linux Ångström, omapfbplay with netsync is enabled by default. This can also be done with the first version of Beagleboard (without Ethernet) via USB. They can also control each display independently and synchronize the mouse and keyboard thanks to Synergy. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting […]

March 8, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Toshiba Resistive Multi-touch Screen

Toshiba developed a proprietary algorithm for multi-touch resistive touchscreen and they exhibited a demo at Embedded World 2011. The hardware is based around Toshiba TMPA900 (ARM926EJ-S core running at 200 Mhz) and runs embedded Linux. This type of system is aimed at home appliances (washing machine, refrigerator…), industrial and medical applications and can be used with a pen, stylus or gloved hand. For example, a doctor wearing gloves would be able to use multi-touch gestures on such screens whereas it would not be possible on capacitive touchscreens or standard resistive touchscreens. It was not specified but I suppose that technology would only support 2 points since they only showed two fingers gesture in the demo. This should not be a problem for the type of application. An another advantage of this solutions is that it brings multi-touch technology to cost sensitive industrial applications. The technology is still under development and […]

March 8, 2011March 8, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Tablet Reference Design based on Samsung Exymos 4210

HardKernel, a Korean company, announced the ODROID-A, a tablet reference design based on Samsung Exymos 4210 (codename Orion), dual-core ARM Cortex-A9, Mali-400 GPU, 1GB Low Power DDR2, 10.1 inch 1366 x 768 TFT with capacitive multi-touch, Dual Camera, HSPA evolution, 9-axis sensor and running Android 2.3 Gingerbread. They will update it to Android 3.0 later on. This development kit will be available at the end of March 2011 for 749 USD (800,000 Won) for developers only. This should offer similar performance as the Motorola Xoom (except 3D maybe), and cost less which is a bit surprising for a development platform. They have an online community to support development on this hardware and they’ll provide the full source code and schematics free of charge. ODROID-A Specifications: Processor Samsung Exynos4210 Cortex-A9 Dualcore 1Ghz with 1MB L2 cache Memory 1024MB LP DDR2 800Mega data rate 3D Accelerator Mali-400 MP Core Micro-Sd slot 8GB […]

March 4, 2011 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Amahi 6 (Home Digital Assistant) and Amahi Sync Released Today.

Amahi is an open source home digital assistant (HDA) running on Fedora. It is basically a server to manage all your media files (like a NAS), backup your PC’s data and host some private web applications (calendar, wiki, …) with people on your LAN. Amahi is available on several platforms such as Intel and AMD x86 processors and embedded platforms such as Intel Atom (ECOPC N.1) and Marvell Sheeva ARM processor (Sheevaplug). They’ve released their latest version Amahi 6 today. Here’s what they say about it: Amahi 6.0: Reliability, Reliability, Reliability! Amahi 6.0 brings a plethora of upgrades, reliability fixes and features, and better hardware support, courtesy of Fedora 14. Here are some of the highlights in this release (see the Amahi 6.0 release notes for all the details as well as the upgrade guide from Amahi 5/Fedora 12). Online Synchronization, Server Alerts and Premium Plans! The Amahi Sync and […]

March 3, 2011February 22, 2015 by Jean-Luc Aufranc (CNXSoft) - No Comments

Telechips 8803 based Android Tablet

Mobile Tech, a Hong Kong based company, showcased two Android tablets (8″ and 10″) based on the new Telechips 8803 processor (ARM Cortex A8) running at 1.2GHz that supposedly offers better performance than the first Galaxy Tab. Both devices use an Innolux capacitive touchscreen, the 8″ version has a resolution of 800×600 and the 10″ 1024×768, both have 512MB RAM and 4GB Flash memory, HDMI output, 802.11n Wifi and optionally 3G and a 1.3MP front camera. They plan to support Android 2.3 (Gingerbread) with this version of the hardware for the time being. Honeycomb will need more RAM (at least 1GB) and more time for the porting with Telechips TCC8803. They only expect Android 3.0 to be ready by the end of the year on that platform. The 8″ version is already in mass production, their price target is 300 Euros retail. The 10″ version should be ready in May […]

March 2, 2011March 2, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Android 2.2 Media Player: Cidecko Simple Box AB03

Cidecko, a Taiwanese company, demoed its new Android media player the Cidecko Simple Box AB03 running Android 2.2 on an undisclosed 500 Mhz CPU (Based on this frequency, could it be one of Sigma Designs SMP8650 series, e.g. SMP8653?) at CeBit 2011. They have an innovative remote control (named Air Keyboard AK02d) in the shape of a game controller with a full keyboard, an accelerometer and of gyroscope to control the menu. The set-top box has HDMI, component (YPbPr) and composite video outputs, optical audio output, 2x USB Host, an SD card reader (supports SDHC), an Ethernet port and support Wifi (802.11n) via an external dongle. Although it’s running Android 2.2, note that it does not support full flash, but only Flashlite 9.0. It can support the most popular video codecs including MPEG-2, MPEG-4, H.264/AVC, RMVB and VC-1 and audio codecs such as MPEG, Dolby, DTS.. The retail price of the […]