Linux Category - Page 488 of 580 - CNX Software

July 15, 2013July 16, 2013 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Freescale SABRE Lite i.MX6 Development Board Unboxing, Wandboard Quad Comparison, and Quick Start Guide

Freescale SABRE Lite is a development board powered by i.MX6 Quad processor with 1GB RAM, SATA, GbE Ethernet, and more. You can get SABRE Lite specifications in my first post about the board. I recently participated in Element14’s “brainteaser” competition for the 4th birthday of their community, where the company offered 9 SABRE Lite development kit to randomly selected participants, and I got lucky. The board can be purchased for $179 from Element14 (MCIMX6Q-SL). I’ll start by showing what in the package, followed by a side-by-side comparison with Wandboard Quad, and show how to getting started by following the Quick Start Guide provided with the board. SABRE Lite i.MX6 Development Kit Unboxing I received the board about 5 days after I provided my address in a large staple carton box with a few goodies. Beside SABRE Lite devkit, the package comes with Element14’s T-Shirt (not my size), double walled tumbler, […]

July 13, 2013 by Jean-Luc Aufranc (CNXSoft) - 6 Comments

Juice Extreme 2 Android TV Home Gateway Features 4 DVB Tuners for Multiscreen Support

Antik Technology, a Slovakia based company, has developed a Android set-top-box powered by STMicro StiH416 SoC. I wrote about the StiH416 development platform previously, and although it’s just a dual core Cortex A9 SoC, its video capabilities are impressive as it supports multiple simultaneous video decoding streams. The set-top box called Juice Extreme 2 leverages those capabilities with 4 DVB tuners (DVB-T or DVB-S2) that provide four different streams, and transcode them, to all video playback devices around your home such as TV, PC, tablet and smartphones, or record them to an internal SATA drive. JUICE EXTREME 2 key features: SoC – STMicro STiH416 (Orly) dual core Cortex A9 @ 1.2 GHz + ARM Mali 400MP4 GPU System Memory – 2 GB DDR3 Storage – 1 GB Flash + internal SATA connector + SD card slot Video: Quadruple DVB Tunner CVBS/Y Pb Pr (3.5mm jack) Tuner board connector RF IN/OUT […]

July 12, 2013 by Jean-Luc Aufranc (CNXSoft) - 32 Comments

Linux-Rockchip Developers Community Up, Rockchip Development Boards Coming Soon?

Companies like Freescale and Texas Instruments provide good software support, and documentation, which is why they can be found in many embedded devices, because without documentation or source code low-level customization is nearly impossible or extremely time consuming. They also usually open most of the documentation and code, because they understand this can foster the use of their chips. On the other hand, Chinese-based SoC manufacturers focus on high-volume platforms such as tablets and smartphones, and usually management don’t understand the advantage to make documentation and GPL source code available, or even may consider it bad for business. Some individuals and small companies do not see it that way however, and they either want to access to the source code to improve existing mobiles devices, or use low cost Chinese SoCs to provide highly customizable hardware and software solutions. So source code and documentation have started to leak, and tools […]

July 11, 2013July 11, 2013 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

big.LITTLE Processing Update – In-Kernel Switcher vs Global Task Scheduling

big.LITTLE processing is a new technology announced by ARM in 2011 that allows an SoC to feature low power cores (e.g. Cortex A7) together with high performance cores (e.g. Cortex A15) in order to optimize power consumption. I’ve previously detailed two big.LITTLE software implementation methods: In-kernel switcher which runs tasks on either Cortex A7 or Cortex A15 depending on the load, but both processors can not run simultaneously. Heterogeneous multiprocessing (now called Global Task Scheduling) that assigns tasks to relevant Cortex A7 or Cortex A15 cores, and if needed, allows all cores to run at the same time. Linaro has just provided a update for the big.LITTLE software implementation. There are currently only two SoCs that ship in products with Linaro b.L kernel support: ARM’s reference Test Chip 2 (TC2) tile for the Versatile Express development platform, configured as an SoC with 2 Cortex-A15 cores and 3 Cortex-A7 cores. Samsung-LSI’s […]

July 10, 2013 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Lernstift Digital Pen Hits Kickstarter for $150

Lernstift is a digital pen running Linux that aims at helping children learning how to write by vibrating when they’ve made calligraphy or orthography errors. I’ve covered the overall concept in an earlier post, which you can read for details. The company has made some progress, and they have just launched a kickstarter campaign where you can pledge 99 GBP (about $150) to receive the pen later this year or in early 2014. We do know a little more technical details. The first prototype was based on Gumstix Overo (TI OMAP3 or Sitara), but they are now working to design a custom board based on the platform for the final design. The pen comes with 128 MB RAM and runs embedded Linux. In order to gather handwriting data, Lernstift leverages a motion sensor that combines gyroscope with accelerometer, and adds a magnetometer. They’ve got a drawing with Freescale MMA9950L, but […]

July 10, 2013July 10, 2013 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Hacking MK908 mini PC for Serial Console Access

Thanks to Omegamoon (and this brother) we already have instructions to connect the UART pins on MK808 in order to access the serial console. He’s done it again with MK908 mini PC featuring Rockchip RK3188. Tx and Rx pads are located on the RAM chips side, and he has connected the green wire to Tx (Going to Rx on TTL debug board), and a yellow wire to Rx (Tx on debug TTL board). A ground pad is available on the other side of the board. Since I got a sample for review from Geekbuying, I decided to give a try myself. The pad are quite small, so this may require patience, but it’s perfectly feasible. I wanted to keep the device closed, so I passed the wires through the ventilation holes (enlarging them a bit with a precision screwdriver), put back the main heatsink on RK3188, and reassembled the enclosure. […]

July 10, 2013 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Play HEVC/H.265 Videos and Embed HEVC Streams into MP4 and TS Files with openHEVC and GPAC

I wrote an introduction to H.265 (aka HEVC) at the end of last year, including instructions showing how to encode videos to HEVC using the reference implementation. It worked but since it was not optimized for speed, it was extremely slow. Today I’ve stumbled across openHEVC, a open source compliant HEVC video decoder written in C, created as a fork of Libav. This is supposed to work pretty well as the implementation was used at Roland Garros Tennis tournament to playback an 720p50 HEVC stream transmitted over DVB-T2, IPTV, and MPEG DASH. Today I’ll mainly tried out the instructions provided on openHEVC github repo including: Build the source and playing a raw HEVC stream with hevc utility Build GPAC (open source multimedia framework), to get MP4Box, mp42ts, and MP4Client utilities. Import a raw HEVC stream into MP4 and TS containers, and play it back with GPAC tools. I’ve performed the […]