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February 7, 2013May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

Quake 3 Arena Demo Using Lima Driver is (Slightly) Faster than Mali-400 Binary Driver

As mentioned previously, Luc Verhaegen was to give a talk about the status of Lima driver (reverse-engineered Mali-200/400 GPU driver), as well as other GPU open source implementation, at FOSDEM 2013. This is now done, and part of the talk included a demo of Quake 3 Arena (q3a timedemo) running on tablet featuring AllWinner A10 SoC (Cortex A8 @ 1Ghz, Mali-400MP1 GPU @ 320 Mhz, and DDR3 memory @ 360MHz), and a 1024×600 LCD. The fact it works is already a great achievement in itself, but this demo runs at 47.2fps with Lima driver (limare), whereas it can be rendered at 46.2fps using the binary driver. In his blog, Luc also explains that apart from being 2% faster, it also uses 3% less cpu than the binary driver! Take that binary blobs! There’s still more work to do however, as this Quake 3 Arena port is not playable yet for 2 […]

February 4, 2013 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Crazyflie Nano Quadcopter Open Source Development Kit

If you can’t wait until 2014 to get the MeCam, Seeedstudio has something for you: The Crazyflie Nano Quadcopter, which looks similar to the MeCam, but does not feature a camera, its control board is powered by STM32F103CB MCU @ 72 MHz with 128kb flash and 20kb RAM (so, no it won’t run Linux), and at $173 the price is significantly higher. Here are Crazyflie key features: Small and lightweight, around 19g and about 90mm motor to motor Flight time up to 7 minutes with standard 170mAh Li-Po battery Standard micro-USB connector for charging which takes ~20min for the stock 170mAh Li-Po battery On-board low-energy radio@1mW based on the nRF24L01+ chip. Up to 80m range (environment dependent) when using the Crazyradio 2.4 GHz USB dongle Radio bootloader which enabled wireless update of the firmware 32 bit Cortex M3 MCU: STM32F103CB @ 72 MHz (128kb flash, 20kb RAM) 3-axis high-performance MEMs […]

February 2, 2013February 2, 2013 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Replicate CAPE Adds 3D Printring Capability to the Beaglebone

Beagleboard.org launched the Beaglebone Cape Design Contest back in November, several designs were submitted, and yesterday, they announced the 3 winning CAPEs who will be manufactured and sold by Circuitco Electronics: Replicape by Elias Bakken – 3D printer cape Interacto by Chris Clark – Cape with a triple axis accelerometer,a gyroscope, a magnetometer and a 640×480 30fps camera. Geiger cape by Matt Ranostay – Geiger counter cape Since today I’ve started to write about 3D printing, let’s carry on and have a closer look at the Replicape. The Replicape 3D printer cape includes: 5 stepper motors (X, Y, Z, Ext1, Ext2) 3 high power MOSFETs (PWM controlled) for 2 extruders and 1 HPB 3 medium power MOSFETs (PWM controlled) for up to 3 fans 3 analog input ports for thermistors 3 inputs for end stops (X, Y, Z) Programmable current limits on steppers motor drivers (SMD). No need to manually adjust […]

February 1, 2013 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

A Selection of FOSDEM 2013 Events

FOSDEM is a 2-day (or 3 if you include Friday beer event) event where over 5,000 members of open source communities meet, share ideas and collaborate. It’s free to attend, and there’s no registration, so you just show up to attend. FOSDEM 2013 takes place on Feb 2-3 (yep, this week-end) in Brussels There are 7 main tracks where sessions are organized: Operating systems Open source challenges Security Janson Beyond operating systems Web development Miscellaneous Robotics There are also keynotes and devroom for a total of 488 sessions. Developers rooms that may particularly be of interest to readers of this blog are: Cross Desktop devroom – e.g. Wayland, gstreamer, razor-qt, Qt Project, Plasma Active, etc… Cross Distro devroom – e.g. Linux on Android, suse on ARM, ARMv8, systemd, etc… Embedded and mobile devroom – e.g. Baserock Embedded Linux, Guacamayo (Yocto), Nemo Mobile/ Mer project, arduino… All in all that’s a […]

January 27, 2013January 27, 2013 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Marvell SMILE Plug DevKit is Now Available for $199

The SMILE Plug is a development kit, designed jointly by Marvell and Standford University, that brings Wi-Fi connectivity to a classroom, and allows up to 60 pupils / students to interact with their teacher via their phones’ or tablets’ web browser. Other possible applications include cloud computing, wireless AP, industrial control, medical instrumentation, office automation, as well as mesh and grid computing. The SMILE Plug is now available with the following updated specifications: SoC – Marvell ARMv7 compliant Marvell ARMADA 370 CPU System Memory – 512 MB DDR3 Storage – 1 GB NAND Flash + microSD slot Connectivity WiFi 802.11 a/b/g/n via Marvell Avastar 88W8764 4×4 WiFi for up to 60 nodes 2x Gigabit Ethernet USB – 2x USB 3.0 External backup battery for hours of reserve power* (optional accessory) Power on button and restart Power Supply – 12V/2amp external power supply JTAG and UART port for programming and debugging […]

January 24, 2013 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

$199 Gizmo Explorer Kit Powered by AMD G-Series APU is Now Officially Available

Back in November, I came across the Gizmo Explorer Kit, an embedded development platform based on AMD G-Series G-T40E dual core APU that includes the development board itself (Gizmo Board), two expansion I/O boards, Sage SmartProbe JTAG development tool, some accessories such as cables and power supply, and a DVD with the documentation and SDK. Today, Sage Electronic, Texas Multicore Technologies, and Viosoft officially launched GizmoSphere community that aims at “fostering innovation and development for x86-based embedded Accelerated Processing Units (APUs), and driving and enabling technology projects of interest to independent developers with a focus on stimulating and encouraging innovation for existing and new applications that leverage APUs”. To help with this initiative, they also produce the Gizmo Board, and corresponding Gizmo Explorer Kit, a development board that boots with coreboot, and can run a variety of operating systems such as Android, Linux, Windows, and other RTOS. You can refer to […]

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

The End of Embedded Linux (As We Know It) – ELCE 2012

Chris Simmonds, freelance consultant and trainer (2net ltd), discusses the future of embedded Linux now that storage and processing power are no longer an major issue, and try to find the best Linux platform for embedded systems at ELCE 2012. Abstract: Embedded Linux is at a cross roads where the combination of Moore’s law making devices more powerful and the mass production of consumer devices, especially mobile, making them cheaper means that the old ways no longer work. Only a few years ago we though in mega: MHz, MBytes, MBits/s. Now we have to think in giga. The days of the single core CPU are almost over, as are the days of the QVGA display. All this means that there is a need to re-think how embedded devices are programmed. Two obvious roads lie ahead: Android and Ubuntu (or other desktop operating system of your choice). This talk considers the […]

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

Etnaviv Project Vivante GCxxx GPU Open Source Driver

You have most probably heard of Lima, an initiative to provide fully open source Mali-200 & Mali-400 drivers by reverse-engineering the closed source Mali GPU drivers. A separate effort, Etnaviv Project, has now started to offer open source drivers for Vivante GCxxx GPU used in SoC such as Marvell Armada 1500 (notably used in mainly Google TV platforms), Rockchip RK2918 (present in many older tablets), Freescale i.MX6 (used in newer tablets, low cost development boards, some SoMs and GK802/Hi802 mini PCs). The project is called Etnaviv. The introduction of Etnaviv Project reads as follows on the corresponding Github account: Project Etnaviv is an attempt to make an open source user-space driver for the Vivante GCxxx series of embedded GPUs. The current state of the project is experimental. It is currently only of use to developers interested in helping develop open source drivers for the hardware, reverse engineering, or in interfacing […]