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Build the OpenSCADA project for mobile devices of the Nokia company (N800, N900, N950)

Name: NokiaLinux
Start: December 2010
Performers: Roman Savochenko, Maxim Lysenko
Description The project is dedicated to building the OpenSCADA project for the mobile devices of the Nokia company (N800, N900, N950) on the Linux platforms Maemo and MeeGo.
Materials: ftp://ftp.oscada.org/OpenSCADA/Devices/Nokia


Оглавление

Introduction

The Nokia company is one of the global leaders in the manufacture and sale of mobile phones. In 2005 the Nokia company has released a pocket-sized personal digital assistant (PDA) N770 on the basis of the full-blown Linux environment with their own desktop environment (based on the GTK +) - Hildon with the title of the project - Maemo. Subsequently, based on the Maemo platform three more mobile devices were produced, namely, two PDAs, "Internet Tablets» N800, N810, and smart phone, "Internet Tablet" N900. In 2010 the Nokia company teamed up to work on Maemo with the MobLin project of the Intel company, thus creating the WikiPedia:MeeGo project. Based on the MeeGo platform in 2011 two smartphones N950(prototype) and N9 were released.


For the OpenSCADA project the mobile devices of the Nokia company on the Maemo and MeeGo platforms are interesting in terms of their full-blown OS Linux environment, and the lack of restrictions and blocks on the expansions of these platforms by building and adapting the typical OS Linux programs, which allows easy to adapt the OpenSCADA to the ARM hardware platform and to build the project for these mobile devices of the Nokia company.


Adaptation of the OpenSCADA project to run on the ARM hardware platforms was made in 2011 in accordance with the general plan of development http://wiki.oscada.org/HomePageEn/Works/RoadMap in the N800 environment (http://wiki.oscada.org/Works/Tests/ARM). Much of adaptation was made in the chroot environment of the ALTLinux distribution, as more recent and less problematic. The latest builds of the OpenSCADA correctly operate in the native environment of the N800.

N800 (Maemo 4.1)

N800 PDA (fig.1) contains the OMAP2420 processor, with an operating frequency of 400 MHz, touch (resistive) 4.1 "800×480" and is based on the Maemo 4.1 software platform.


file:N800.png
Fig. 1. N800 PDA, "Internet Tablet»

At the stage of exploring the possibility of building the OpenSCADA on the N800 some problems of obsolescence of software environment and a number of problems in the performance of the built OpenSCADA were found, part of which was associated with unwillingness the OpenSCADA to work on the ARM architecture. For this reason, the build of OpenSCADA in "chroot" environment of the ALTLinux distribution on the N800 was made. Among the most significant problems encountered during building of OpenSCADA, it may be noted:


To safely make the experiments with the device and prevent possible damage of the original software environment it was adjusted the multi-boot with the ability to boot from the original software environment on the internal flash-drive and from the experimental environment on the internal SD-card, a copy of the original software environment (http://habrahabr.ru/blogs/n800/24111).


To create the "chroot" of the ARM environment of ALTLinux repository the manual http://www.altlinux.org/Ports/arm/chroot was used. On the basis of the received chroot it was created the building environment to build the OpenSCADA in it, directly on the N800. Theoretically it is possible to build directly on the big PC through quemu, but at the same time I'm having problems with crashing of quemu. In addition to the building of OpenSCADA the resulting "chroot" environment has also been successfully used to launch a fresh environment KDE 3.5.12 on the N800.


Subsequently, to build the OpenSCADA with GUI for the native environment, which became possible with the appearance of the QT4 packages, the official SDK and compile environment of the Nokia company was installed. Installation was made by the installation script of the building environment maemo-scratchbox-install_4.1.sh and the SDK installation script maemo-sdk-install_4.1.sh. General description of the SDK can be obtained from the link.


Внимание! В расширенном репозитории Maemo 4.1 последняя версия QT4 (libqtcore4, libqtgui4-4.5.3-1maemo1) содержит ошибку, которая приводит к падению приложения в момент создания/удаления виджетов, что можно наблюдать в конфигураторе OpenSCADA на библиотеке QT. Для обхода этой проблемы необходимо установить и зафиксировать от обновления предыдущую версию QT4 (libqtcore4, libqtgui4-4.5.2-1maemo2), которая не имеет этой проблемы и работает стабильно.


Кроме первоочередной цели сборки и запуска OpenSCADA на этом устройстве были также выполнены задачи:

N900 (Maemo 5)

Nokia N900 содержит процессор ARM Cortex-A8 OMAP3430 (600 МГц), сенсорный (резистивный) дисплей 3.5" 848×480 и построен на основе программной платформы Maemo 5.


file:N900.png
Рис. 2. Мобильный телефон N900

Для сборки OpenSCADA под родное окружение было установлено официальное SDK и окружение компиляции фирмы Nokia. Установка проводилась посредством скрипта установки сборочного окружения maemo-scratchbox-install_5.0.sh и скрипта установки SDK maemo-sdk-install_5.0.sh. Общее описание SDK можно получить по ссылке.

N950, N9 (MeeGo 1.2 Harmattan)

Nokia N950 содержит процессор ARM Cortex-A8 OMAP3630 (1 ГГц), сенсорный (емкостной) дисплей 4" 854×480 и построен на основе программной платформы MeeGo 1.2 Harmattan.


Телефон был получен от Nokia в рамках программы Qt Ambassador Program для адаптации на него системы OpenSCADA.


file:N950.png
Рис. 3. Мобильный телефон N950

Для сборки OpenSCADA под родное окружение было установлено официальное SDK и окружение компиляции фирмы Nokia. Установка проводилась посредством скрипта установки harmattan-sdk-setup.py. Общее описание SDK и инструкцию по установке можно получить по ссылке.

Ссылки


Страницы, ссылающиеся на данную: HomePageEn/Using/PLC/firmwareARM


 
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