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January 26, 2011January 26, 2011 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

OLPC XO 1.75 Hardware, Firmware and Software

OLPC demo’ed their 3rd generation laptop – OLCP XO 1.75 – based on Marvell Armada 610 at CES 2011. The good thing about this platform is that they opened most of it including the hardware, the software and for the first time the firmware. However, I found out it’s not so easy to find the hardware / software development information and source on the OLPC site, so I’ve decided to make a summary and provide links to the hardware, firmware and software for OLPC XO 1.75. OLPC XO 1.75 Hardware The XO-1.75 is powered by Marvell Armada 610 CPU (88AP610) with an ARM core clocked at 1Ghz. It has 1GB DDR3 SDRAM, 4GiB NAND Flash, a TFT display, an SD Card slot, Wi-Fi, a few USB ports and a camera. I believe the touchscreen is not part of the current hardware, but the block diagram below should be close to […]

January 24, 2011January 24, 2011 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Freescale i.MX Overview, SDK and Development Boards

Freescale i.MX Processors Overview Freescale i.MX multimedia applications processors are based on ARM9, ARM11 and ARM™ Cortex-A8 and Cortex-A9 core technologies “delivering an optimal balance of performance and long battery life for rich multimedia experiences on the go”. There are quite a few families within the Freescale i.MX Series namely: i.MXS Processors:ARM9 Core @ 100-200Mhz (i.MX1 (not recommended for new designs), i.MXL and i.MXS). i.MX21 Processors: ARM9 Core @ 233-266Mhz (i.MX21 and i.MX21S) i.MX23 Processors: ARM9 Core @ 454 Mhz (i.MX233) i.MX25 Processors: ARM9 Core @ 400MHz for industrial and automotive applications (i.MX251, i.MX253, i.MX255, i.MX257 and i.MX258) i.MX27 Processors: ARM9 Core @ 400Mhz for Video over IP, VoIP, Cordless and Mobile phones… (i.MX27 and i.MX27L) i.MX28 Processors: ARM9 Core @ 454 Mhz for industrial and consumer applications (i.MX281, i.MX283, i.MX285, i.MX286 and i.MX287) i.MX31 Processors: ARM11 Core @ 400-532 Mhz for industrial, consumer and automotive applications (i.MX31 and i.MX31L) […]

January 14, 2011January 14, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Resources for Atmel AT91SAM9: SAM926X, SAM9GXX, SAM9M1X, SAM9XE…

Atmel AT91SAM9 – or simply Atmel SAM9 – series are versatile microcontrollers and embedded microprocessors used in variety of products such as internet radios, embedded p2p downloaders, smart grid in-home displays, and much more. Atmel SAM9 series are divided into five subsets: The original SAM9 MCU based on ARM926EJ-S running at between 210 and 240 Mhz, namely AT91SAM9260, AT91SAM9261, AT91SAM9261S and AT91SAM9263 SAM9G eMPU (Embedded MPU) based on ARM926EJ-S, a new generation based on SAM9 MCU architecture but running at between 266 and 400Mhz: AT91SAM9G10, AT91SAM9G20, AT91SAM9G45 and AT91SAM9G46. SAM9M eMPU based on ARM926EJ-S clocked at 400Mhz and with a video decoder: AT91SAM9M10 and AT91SAM9M11 SAM9R MCU based on ARM926EJ-S running at 210 Mhz with similar characteristic as the original SAM9 MCU, except it does not support USB Host but can be used as a High Speed USB device: AT91SAM9R64 and AT91SAM9RL64 SAM9XE MCU are also based on ARM926EJ-S running […]

January 10, 2011January 10, 2011 by Jean-Luc Aufranc (CNXSoft) - No Comments

Third Generation OLPC XO Laptop powered by ARM Marvell Armada 610

OLPC (One Laptop Per Child) was also at CES 2011 in Marvell stand with their third generation OLPC XO laptop named OLPC XO-1.75, after the first generation using AMD and the second Via Technologies. Charbax interviewed Ed NcNierney, Chief Technology Office at OLPC. They only changed the PCB in this version, i.e. the casing, keyboard, monitor is the same as the previous generations.The processor used in OLPC XO-1.75 is the ARM based Marvell Armada 610 (single core) running at 1GHz with 1GB RAM and 4GB Flash. The laptop can be recharged with a hand crane for 1 minute, then the laptop can be used for 10 minutes (color) and about 12 minutes (black and white). With the third generation, the price is only marginally cheaper than the previous generation (<200 USD), but the power consumption is now 2 Watt (instead of 4 Watt) and it is the most important part, […]

December 28, 2010June 12, 2012 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

Near Field Communication (NFC) Introduction and Software Development

Android 2.3 features near field communication (NFC) in order to allow payment through your phone as it is already implemented in Japan with FeliCa (Felicity Card), a contactless RFID smart card system from Sony, direct communication between NFC devices, RFID reader, etc… NFC is already supported in Samsung / Google Nexus S. In this blog post, we’ll see what near field communication is, which hardware is needed and what needs to be done at the software level (driver and NFC stack). What is Near Field Communication ? Extract from Wikipedia: Near Field Communication or NFC, is a short-range high frequency wireless communication technology which enables the exchange of data between devices over about a 10 centimeter (around 4 inches) distance. The technology is a simple extension of the ISO/IEC 14443 proximity-card standard (proximity card, RFID) that combines the interface of a smartcard and a reader into a single device. An NFC […]

December 20, 2010December 20, 2010 by Jean-Luc Aufranc (CNXSoft) - No Comments

Resources for NVidia Tegra 2

NVidia Tegra 2 is currently one of the most powerful processor used in smartphones and tablets such as the upcoming LG Optimus 2X smartphone or the new version of Samsung Galaxy Tab. NVidia describes the processor as follows: NVIDIA® Tegra™ 2 is the world’s most advanced mobile processor, featuring the world’s first mobile dual-core CPU for up to 2x faster Web browsing; the world’s only ultra-low power (ULP) NVIDIA® GeForce® GPU for up to 5x faster gaming; and the world’s first mobile 1080p HD video processor for flawless HD video conferencing and playback. Get never-before-seen experiences on a mobile device with NVIDIA Tegra. NVidia Tegra 2 is based on a dual core Cortex A9 running up to 1GHz, supports 32-bit DDR2 RAM and features NVidia Geforce GPU with OpenGL ES 2.0 support. Contrary to many other companies finding the development kit, documentations and tools is straightforward. Once you get to […]

December 14, 2010January 17, 2011 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

Building Archos Gen8 Source on Ubuntu 10.10

[ad#Google Adsense-Leaderboard] In a follow-up post of GPL Source code and SDE for Archos Gen8 Devices earlier today, here are the steps I followed to build the toolchain, kernel and root file system with buildroot on Ubuntu 10.10 Desktop version: Extract the source code: tar xzvf ../Downloads/gen8-gpl-froyo.tgz Install extra packages for the build: sudo apt-get install flex bison build-essential zip curl libmpfr-dev libmpfr1ldbl automake autoconf libtool gettext texinfo Run the build to generate the toolchain, kernel and root file system: cd gen8-gpl-froyo/buildroot sudo make Then wait for a while (It took 1h15 on my machine) to get the binary images: zImage (kernel) in buildroot/linux/arch/arm/boot rootfs.arm.squashfs (rootFS) in buildroot/binaries/uclibc 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 to write daily news, and reviews full time later in 2011. www.cnx-software.com

December 14, 2010December 15, 2010 by Jean-Luc Aufranc (CNXSoft) - No Comments

GPL Source code and SDE for Archos Gen8 Devices

Right at the end of November, Archos released the first version of their Android 2.2 firmware (2.0.54). They now have also released the GPL code for this firmware. http://www.archos.com/support/download/software/sources/gen8-gpl-froyo.tgz In this package, you’ll find the following: Linux Kernel 2.6.29 buildroot – Set of tools to generate the cross-compilation toolchain, the kernel and the root file system A directory called “external” with the following libraries, tools and drivers: alsa-lib – Audio library blktrace – Driver debugging tool elfcopy – Tool to generate executable binaries grub – Bootloader iptables – Firewall Tool liblzo – LZO Compression Library webkit – Web Browser Engine alsa-utils – Audio Tools BlueZ – Bluetooth Protocol Stack elfutils – Tool to manipulate executable binaries hostapd – For Wifi Authentication jdiff – Java Code Analyzer openvpn – VPN Client/Server wpa_supplicant – Wifi tools for WPA/WPA2 bison – Parser Generator dbus – Libray and daemon for IPC (InterProcess Communication) genext2fs […]