Bluetooth Smart Devices and Low Energy support on Linux – ELCE 2012

Andre Guedes and João Paulo Rechi Vita, software engineers at Instituto Nokia de Tecnologia (INdT), give a presentation about Bluetooth Low Energy support on Linux (BlueZ stack) at the Embedded Linux Conference Europe in Barcelona on November 5, 2012. Abstract: This presentation will cover a brief introduction on how the Bluetooth Low Energy technology works. Then it will present the current status of its support on Linux, presenting the available APIs and how to interact with Bluetooth Smart devices. Then we’ll present the profiles we’re currently working on and what support can be expected to be found on Linux and BlueZ this year. There will be also a few demos of Bluetooth Smart devices working on Linux. The audience of this talk is application or framework developers that want to add support for Bluetooth Smart devices to their software, hardware vendors,and technology curious. Basic Bluetooth understanding is recommended but not required. The agenda of the talk is as follows: Intro […]

Jolla Unveils Sailfish OS based on Meego and Sailfish SDK

Last July, a company called Jolly announced it would design, develop and sell smartphones based on the Meego operating system. This is now closer to reality as a demo has been showcased running on Nokia N950, except the operating system is now called Sailfish OS. Internally, Sailfish OS is built on top of the Mer project and Qt. The UI is built with QML and QtQuick and the standard QtMobility APIs are supported. For software development, you’ll need to use a special version of QtCreator. The development flow  looks very similar to what you would do to develop applications for Symbian or Harmattan phones. More precisely, the Sailfish SDK consists of QtCreator, a virtualised Mer Platform SDK and Sailfish components. Code is developed in Qt-Creator on the host device, then the code is passed to the virtualised Mer SDK where it compiles inside the Virtual Machine. If you want to have a look at the user interface, watch Jolla promo […]

Experienced Qt4 Mobile Developer? Get A Free Nokia N9 / N950 Smartphone

Quim Gil, in charge of developers relation at Nokia, announced on Maemo.org, that Nokia is currently looking for experienced Qt developers willing to port or develop apps running on top of Qt 5 before its finally release in August/September 2012 and will provide a Nokia N9 or N950 smartphones (running Meego) to selected developers. The goals of this device program are as follows: Testing Qt 5 itself and providing feedback while it’s alpha/beta. Testing the Qt 5 libraries for the Nokia N9. Developers feedback for port from Qt 4 to Qt 5, whether is was easy, a nightmare… and comments on difficulties experienced, Qt Creator and the documentation. Testing new Qt 5 features such as Qt Quick 2, textures, transitions, graphics / video effects, raw OpenGL ES stuff, post-Mobility APIs, the new Qt WebKit, JSON DB, ongoing R&D on PhoneGap own JQuery based experiments, etc… This new device program has the same goal as QtonPi program, but this time, Nokia […]

Qt 5 for Raspberry Pi (QtonPi) 0.1 Release

Nokia Qt Labs has announced the very first release of Qt5 for Raspberry: QtonPi 0.1. QtonPi 0.1 includes a pre-alpha release of Qt 5, but Qt 5 alpha will be part of the next release. So bear in mind that it’s likely to be buggy and some features are missing. This release is includes: Base Layer Fedora RPM Packages plus some additional Raspberry Pi specific packages Linaro GCC 4.5.4 toolchain QtonPi image creator and sysroot tools Middleware Documentation on how to get toolchain + sysroot + Qt Creator working to Develop Apps Qt 5 running on full-screen EGFS mode The release can be downloaded via: BitTorrent – qtonpi-0.01.tar.bz2.torrent HTTP Download – qtonpi-0.01.tar.bz2 Alternatively if you are already running the Debian 6 image in the emulator or Raspberry Pi board, you can install the latest snapshot (e.g. nightly build) by adding deb http://archive.qmh-project.org/rpi/debian/ unstable main to /etc/apt/sources.list and run the following commands: sudo apt-get update sudo apt-get install qt50-snapshot This will […]

Nokia Qt Labs Releases Qt 5.0 Alpha

Nokia Qt Labs announced the alpha release of Qt 5 C++ application development framework, which focuses on the delivery of Qt Essential modules for Qt 5. This new version of Qt goal is to bring the focus to a model, although native Qt using C++ would still be used to implement modular backend functionality for Qt Quick. The developers explains that this module is working nicely on Qt for embedded system where UIs are full screen, but more work is needed on the desktop, and it will only be fully implemented in Qt 5.1 or 5.2. Qt developers make 4 big architectural changes to Qt internal architecture: Base all Qt ports on Qt Platform Abstraction layer (QPA) to make it easier to port Qt to other windowing systems and devices. Re-architect Qt graphics stack using a a Scenegraph on top of OpenGL to increase performance versus Qt 4, using Qt Quick and OpenGL (ES) 2.0 Modular repository structure for increased […]

Color Converter for Nokia Symbian Anna / Belle

I’ve developed a small Qt Quick application called ColorConv that can convert RGB color to HEX color used in HTML pages (e.g. 255,255,255 -> #FFFFFF) and vice versa mainly to play with Qt Creator QML and test Nokia Ovi Store application submission process. You can enter the Red, Green, Blue values manually by typing with the default numerical keypad in Symbian or use the slider to select the value. Alternatively you can enter the hexadecimal code to get the RGB value. If you are interested, you can download it in Ovi Store and in case you have some requests please comment on the support page. Nokia Ovi Store Submission Process Nokia submission process is almost free (1 Euro) and it took about 2 weeks to get my application published. I basically followed the instructions given on submit Qt applications to the Ovi Store PDF. The first thing you have to do is to register at Ovi Publish and pay 1 […]

Qt Labs Releases Qt 4.8.0

Qt Labs has just announced the release of Qt 4.8.0 featuring Qt Platform Abstraction, threaded OpenGL support, multithreaded HTTP and optimized file system access. Here are some of the new key features  in Qt 4.8.0: Qt Platform Abstraction (QPA) QPA restructures the GUI stack to enable easier porting of Qt to different windowing systems and devices. Previously called Lighthouse. Threaded OpenGL supportEnables developers to render OpenGL from more than one thread concurrently. See Threaded OpenGL in 4.8 for more details. Multithreaded HTTP HTTP requests are now handled in a separate thread by default. This should make application guis smoother, as networking will no longer use the main event loop. Optimized file system access The file system stack received some heavy lifting under the hood. The result is better I/O performance, achieved by reducing the number of system calls performed for I/O and by better use of cached data, when available. The improvements in performance can be seen across all platforms. […]

Nokia Developer Day 2: Qt QML Workshop – Chiang Mai

I’ve just attended Nokia Developer Day  on 6-7 December 2011 in Chiang Mai. I’ve already written a summary about the first day dealing with Series 40 Java and Web Apps Workshop. The second day was focused on Qt/QML (Qt Meta-Language) software development for Nokia’s Symbian phones. Nokia will phase out Symbian operating system in 2016, but they’ll still support it until that time. Nokia will also port  Qt to lower end phones (e.g. Series 40) on a new operating system based on Linux called Meltemi. Overall Business Direction & Strategy The first 45-minutes for was presentation given by Grant Aaron McBeath, Managing Director, Nokia Thailand and Emerging Asia, about Nokia business direction: focus on Windows Phone for smartphones, Java/Web Apps for feature phones and future disruption. He also showed the progress of Nokia Ovi Store with 10 million downloads a day and 177 publishers with more than 1 million downloads. The new Nokia Lumia 710 and 800 (WP7) and Nokia […]