Qualcomm initially announced the Snapdragon S4 is a blog post back in August. They have now released a white paper providing further information on this processor. The Qualcomm Snapdragon S4 (MSM8960) is composed of two Krait CPUs clocked between 1.2 and 1.5 Ghz, an Adreno 225 GPU and a modem subsystem with LTE, GPS, Wifi, Bluetooth and FM support. It will be manufactured using 28nm technology and provide much lower power consumption compared to previous generations. Key features and improvements: New CPU micro-architecture: The Krait CPU offer a 60% performance improvement compared to the scorpion CPU used in previous generations. SIMD/VFP performance: Multimedia instructions (SIMD) and floating point operations have also been improved, but no metrics have been provided. Optimized memory subsystem: Krait includes dual-channel memory. Dual-channel memory is critical in order for the processor to being able to handle the large bandwidth requirements in multicore systems. 25/40% power improvement: […]
Embedded Linux Conference Europe (ELC-E 2011) will take place on October 26 – 28, 2011 at Clarion Congress Hotel in Prague, Czech Republic. The event will be co-located with LinuxCon Europe 2011 and GStreamer Conference. The day before the official opening of the conference, two tutorials will be offered on Tuesday 25th of October:b Outside the Box: An Introduction to Embedded Linux and Hardware Interfacing Using the Snowball Board – 9:00 – 17:00 – Trainer: Chris Simmonds – Cost: 350 USD. Embedded Android Workshop – 9:00 – 17:00 – Trainer: Karim Yaghmour- Cost: 300 USD. ELCE consists of 3 days of presentations, tutorials and sessions. There will be over 50 sessions during those 3 days. I’ll highlight a few sessions that I find particularly interesting. October 26 10:45 – 11:45 – Linaro’s Android Platform by Zach Pfeffer, Linaro Android Platform team leader. Linaro uses components from the Android Open Source […]
You may need to remotely access your embedded device, or your embedded systems is simply headless. You could use telnet, but this is insecure. A secure way to access a device remotly is to use SSH protocol. OpenSSH is one implementation but this is relatively too large and may use uncesary space on a device with limited storage. That’s where Dropbear comes into play. Dropbear is a lightweight implementation of an SSH client and server and is ideal for embedded systems. Dropbear ARM executable is only 200 KB. Here’s how it’s described on its website: Dropbear is a relatively small SSH 2 server and client. It runs on a variety of POSIX-based platforms. Dropbear is open source software, distributed under a MIT-style license. Dropbear is particularly useful for “embedded”-type Linux (or other Unix) systems, such as wireless routers. The main features of dropbear: A small memory footprint suitable for memory-constrained […]
Zlib is defind as “A Massively Spiffy Yet Delicately Unobtrusive Compression Library” and used in many projects requiring compression. Here are the instructions cross-compile zlib for ARM: Download zlib1.25 wget http://cdnetworks-kr-2.dl.sourceforge.net/project/libpng/zlib/1.2.5/zlib-1.2.5.tar.gz Extract it tar xzvf zlib-1.2.5.tar.gz cd zlib-1.2.5 Configure, build and install zlib. CC=armv5tel-redhat-linux-gnueabi-gcc ./configure –prefix=/home/jaufranc/edev/rootfs make make install This will install libz.a (static library) and libz.so (dynamic library) in /home/jaufranc/edev/rootfs/lib and copy the header files to /home/jaufranc/edev/rootfs/include.
You can easily install an arm cross-compiler on Fedora as follows: cd /etc/yum.repos.d/ sudo wget http://ftp.linux.org.uk/pub/linux/arm/fedora/cross/cross.repo sudo yum install armv5tel-redhat-linux-gnueabi-gcc You can check the installation worked by checking the cross-compiler version [[email protected] ~]$ armv5tel-redhat-linux-gnueabi-gcc -v Using built-in specs. Target: armv5tel-redhat-linux-gnueabi Configured with: ../configure –prefix=/usr –mandir=/usr/share/man –infodir=/usr/share/info –enable-shared –enable-threads=posix –enable-checking=release –with-system-zlib –enable-__cxa_atexit –disable-libunwind-exceptions –enable-languages=c,c++ –disable-libgcj –with-sysroot=yes –enable-version-specific-runtime-libs –target=armv5tel-redhat-linux-gnueabi Thread model: posix gcc version 4.1.2 20070925 (Red Hat 4.1.2-33.fa1) This will only install the C compiler (gcc), to install the C++ compiler, run the following command: sudo yum install armv5tel-redhat-linux-gnueabi-gcc-c++ Tested in Fedora 12.
Congatec announced the Conga-QAF, a Qseven module powered by AMD G-Series embedded processors. The module will come with either the AMD G-T40R single core or the AMD G-T40E dual core processor, with 2 GB DRAM by default (expandable to 4GB), numerous I/O interfaces and an optional on-board SSD with a capacity of up to 32 GB. If you are not familiar with the QSeven Form Factor and why it is used, please read the beginning of the blog post entitled “QSeven Form Factor Embedded Boards by Seco“. To summarize, this is a standard to allow developers to use modules (based on QSeven specs) to test their software on several processors by inserting those modules in a common main board. Here are the specification of the Conga-QAF Qseven module: CPU AMD G-T40E 1.0 GHz Dual Core (L1 cache 64KB, L2 cache 512kB x2, 6.4 W) AMD G-T40R 1.0 GHz Single Core […]
After much delay, the low cost tablet promised by the Indian government is finally released. The Aakash UbiSlate 7 is designed primarily for Indian students and will be sold to them at a discount. The tablet will be manufactured by Datawind in Hyderabad, India. The retail price will be 2,999 Rupees (~61 USD), but it will be sold to the government for 2250 Rupees (~46 USD) and will end up in the hands of students for a sponsored price of 1300 Rupees (~26 USD). Here are Aakash UbiSlate 7 Tablet Specifications: Processor: 366MHz Conexant Processor Memory: 256MB RAM Storage: 2GB Flash memory + 2GB Micro SD card (expandable to 32GB) OS: Android 2.2 with Getjar Marketplace (not the default Android Marketplace) Display: 7″ resistive touchscreen Network: Wifi only. Later models will be GPRS and SIM enabled. USB: 2 x ports Audio out: 3.5mm jack / Audio in: 3.5mm jack Battery: […]
NXP and Landis+Gyr are showcasing smart meters equipped with NFC technology at the Metering Europe 2011 event in Amsterdam this week. The companies are demonstrating how utility companies will be able to use NFC smart meters to: Save money by removing the need to include an LCD display in a smart meter. Meter readers will instead use an NFC-enabled phone to take a reading from the meter and then use their handset to collect and view current and historical energy consumption. Use an embedded secure element in the smart meter to increase customer privacy while at the same time providing the necessary level of access to installation and service technicians. Enable authorised maintenance technicians to download metering information to handsets or tablets as well as upload firmware updates to the meter via NFC. Use secure device pairing to deliver home area network (HAN) capabilities. Provide secure and convenient pre-payment of […]