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August 7, 2012January 16, 2013 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

15 Linaro OnAir Sessions about Android, Linux, Debugging and Software QA

Linaro has planned 15 virtual conferences between Monday, August 13 and Saturday, August 18, 2012. Those online events will deal with the work done at Linaro, including software optimization, software QA, Android and Linux kernel development, Open Embedded on ARMv8 and more. Those conferences are public and anybody can join. All times indicated below are GMT+07:00 (Bangkok), so you can either mentally convert the time (recommended), or click on the links below to get the date and time in your timezone. Exploring The Performance Impact of PGO and LTO on ARM– Mon, August 13, 5:00 PM Abstract: Profile guided and linked time optimisation (PGO and LTO) are two of GCC’s cross program optimisations that should improve both the startup and runtime of typical programs. We know that they basically work on ARM but don’t know the potential speed up or the work involved in proper support. This session will cover […]

August 3, 2012May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

HackBerry AllWinner A10 Board is Now Available for $60

The Hackberry “development board” is now available for sale on Miniand. This board powered by AllWinner A10 processor comes in 2 versions: 512 MB RAM version – Available now for $60 1GB RAM version – Available by the end of the month for $65. Both boards features a 4GB Flash, a SDHC slot, 2x USB 2.0 port, 10/100 Ethernet, Wi-Fi, HDMI & composite outputs, headphone & microphone ports and a IR sensor. The good thing is that serial interface and FEL connectors will be soldered on the board for easy debugging and recovery. The FEL recovery port allows to reflash the board using Livesuit. As a side note, Henrik, a developer involved in Allwinner A10 software development, has done some work to reverse engineer FEL USB protocol, wrote a small program to enter into Livesuit mode with an SD card (Go to the bottom of the page section “Forcing FEL […]

August 2, 2012 by Jean-Luc Aufranc (CNXSoft) - No Comments

$39 Variscite VAR-SOM-AM33 SoM Powered by TI Sitara AM335x

Variscite has announced a new system-on-module based on Texas Instruments Sitara Cortex A8 AM335x processors (AM3352 or AM3354) named VAR-SOM-AM33, which sells for as little as $39 US (in large quantities I assume). This SoM is available in commercial and industrial grades, and the company expects the module to be used in applications such as automotive, control systems, lighting, refining and processing. Here are the specs of this module: CPU – Texas Instruments AM335x Processor @ up to 720 MHz withPowerVR SGX530 GPU (AM3354 only) System Memory – 256MB 606MHz DDR3 Storage – 128 to 512MB SLC NAND Flash Display interface – LCD interface – Parallel RGB Supporting 1400×1050 24bit and4/5/8-Wire touch panel interface Audio – Line-in, line-out, stereo headphone out, digital microphone, analog microphone and S/PDIF Out Connectivity: 10/100Mbps Ethernet PHY 10/100/1000Mbps RGMII Wi-Fi 802.11 b/g/n (via TI WiLink 6.0) Bluetooth V4.0 + EDR (via TI WiLink 6.0) Interfaces: 2 […]

July 31, 2012June 28, 2017 by Jean-Luc Aufranc (CNXSoft) - 82 Comments

84 MB Minimal Raspbian ARMHF Image for Raspberry Pi

Many embedded systems applications do not require a desktop environment or graphical interface on the screen (e.g. server), and you may want to only install the files you really need on the SD card either to reserve as much space as possible for data and/or your program or to reduce costs. After searching for a minimal image based on Raspbian ARMHF distribution for the Raspberry, I could only find Linux Systems minimal image based on the Alpha version of the Raspbian Wheezy. Their compressed image is 109 MB in size, has a custom kernel, sshd and ntpd are enabled, but the wireless tools were deleted, and at the time the swap was located in another partition instead of a file inside the rootfs. The uncompress rootfs is about 414 MB (as reported by df -h when mounted as a loop device). I decided to prepare a minimal image myself based […]

July 27, 2012May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 21 Comments

Smallart U-Host mini PC Unboxing and Review

I’ve just received a Smallart Uhost mini PC based on AllWinner A10 from the “The Cubies hacker shop” on Aliexpress. The device features 1GB RAM, 4B flash, includes 802.11 b/g/n built-in, USB ports, HDMI output and a microSD card. It costs $70 including shipping. I received the device in the simple package below. There is a whole bunch of stuffs inside the package. A USB to mini USB cable for power and to connect the device to PC to act as a USB drive, the Smallart U-host mini PC itself, a user manual in English, the power supply 5V/2A with a USB port, an HDMI female to male cable. The USB to mini USB cable has actually 2 large USB connector in order to provide up to 5W power (2 x 500mA x 5V). The mini PC has several connectors including an HDMI male connector, a USB Host port (for […]

July 26, 2012July 26, 2012 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

VIA Releases Kernel 2.6.32 and U-Boot Source Code for $49 APC Board

VIA Technology unveiled the low cost APC (Android PC) board based on WonderMedia WM8750 processor (ARM11) back in May, and started to ship the Android board this month (I think since that was their plan). The company has just released Kernel 2.6.32.9 and U-Boot source on github. Here’s how to retrieve the code provided git is already installed on your machine:

git clone git://github.com/apc-io/apc-8750.git

1	git clone git://github.com/apc-io/apc-8750.git

You can then build U-Boot (provided you’ve already installed an ARM toolchain in your path):

cd $CURRENT_PATH/u-boot
make wmt_config
make all

cd $CURRENT_PATH/u-boot

make wmt_config

make all

and the Linux kernel:

cd $CURRENT_PATH/kernel
make 8710_defconfig
make ubin

cd $CURRENT_PATH/kernel

make 8710_defconfig

make ubin

The availability of the source means we should see Linux distribution like Debian, Fedora or Arch Linux ARM (separate from Arch Linux) running on the board very soon. In theory, it’s also possible to run a Linux distribution with the binary Linux kernel compiled for Android, but it causes some issues and also makes customization more difficult. I think they should also have release the code they modified […]

July 26, 2012January 16, 2013 by Jean-Luc Aufranc (CNXSoft) - No Comments

LinuxCon North America 2012 Schedule

LinuxCon (North America) 2012 will take place on August 29 – 31, 2012 at Sheraton Hotel & Marina, in San Diego, California. The event will be co-located with the Linux Kernel Summit, the Linux Plumbers Conference, and CloudOpen 2012. LinuxCon consists of 3 days of keynotes, business and developers related sessions as well as tutorials. There will be over 80 sessions and keynotes during those 3 days. I’ll highlight a few sessions that I find particularly interesting and related to embedded Linux, software development and ARM. August 29 10:45 – 11:30 – Life After BerkeleyDB: OpenLDAP’s Memory-Mapped Database by Howard Chu, Symas Abstract: OpenLDAP’s new MDB library is a highly optimized B+tree implementation that is orders of magnitude faster and more efficient than everything else in the software world. Reads scale perfectly linearly across arbitrarily many CPUs with no bottlenecks, and data is returned with zero memcpy’s. Writes are on […]

July 23, 2012July 23, 2012 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

24 Euros Aria G25 Atmel SAM9 (ARM9) Linux Embedded Module

ACME System, an Italian company specializing in low-cost microprocessor boards, has designed the Aria G25, a tiny system-on-module (SoM) based on Atmel SAM9G25 for Linux embedded devices, that will be available in August and sell for 24 Euros (128 MB RAM version) and 29 Euros (256 MB RAM). Here are Aria G25 specifications: CPU – Atmel AT91SAM9G25 (ARM9) @ 400Mhz CPU System Memory – 128MB (G25-128) or 256MB (G25-256) DDR2 RAM Connectivity – 10/100 Mbit Ethernet interface USB – Up to 3 USB 2.0 host ports (2 Hi-Speed, 1 Full-Speed) Interfaces: Up to 6 serial lines 2x I2C buses 2x SPI buses 60 GPIO lines 4x A/D lines @ 10 bit Dimensions – 40 x 40 mm Operative temperature range – 0-70 °C (but they also plan to release an industrial temperature range SoM) Power – 3.3V | Consumption: 0.3 Watt The company will provide a Debian Linux distribution with […]