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Der MEVA - Blog
Albrecht Weinert


a-weinert.de,  meva-lab.de
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Embedded systems using AVR ATmega controllers are usually (best) implemented in pure C with a (WIN-avr) GCC toolchain. RAM is often the tightest ressource and sometimes developers fear the stack might collide … weiter lesen »

Albrecht Weinert

Make Subversion keep mTime

Subversion (SVN) is a good versioning system and still "the" standard. Nevertheless, it has one big deficiency:
    SVN destroys the file modification meta info (mTime for short).
See also this older contribution. Since then the frustating discussion is still on. In the meantime you can have some SVN clients taking the commit time instead of the check out time as the file’s … weiter lesen »

This is an AVR ATmega develepment report on a serial bootloader for ATmega1284P, ATmega328P and ATmega2560 based systems. The advantages of this bootloader are:

  • No (more) need for extra programming hardware
  • Using a standard communication link, often used anyway in normal operation
  • Using a standard programming protocol (AVR109)
  • Utilising the standard professional tool chain
  • Good integration / co-operation with system / application software
  • Available without fee, open source
  • ArduinoMega’s “jail break” – Free Arduino!

… weiter lesen »

Albrecht Weinert

Making WordPress 3 bilingual

WordPress (WP) is often used as a Blog or small content management (CM) system be it stand alone or as integral part ([1]) of an existing website or as companion with existing sites using the same style and look. Some websites are multilingual for good reasons offering content in say English, German, French, Italian, Croatian or further languages.
Then there will be

  • articles in different languages in the sense of partly publishing in English and, for example, mainly in German,
  • the same article / content in different languages in the sense of … weiter lesen »
Albrecht Weinert

W2K8 cloning for homologous servers

Situation

Setting up a Windows Server 2008 installation from DVD, having get it all updates, installing the extra basic software (Java, Frame4J, utilities) needed and furbishing the system settings can be a task of many hours. If the target is a zoo of alike servers (a handful of Fujitsu Siemens Primergy RX300 S3 in our case) the desire to clone the good work gets overwhelming.

Solution

In the case of homologous … weiter lesen »

Albrecht Weinert

Subversion’s big bug – a repair

Being a good versioning system and "the" standard Subversion (SVN) nevertheless has some deficiencies mentioned in the (German) Tutorial

Subversion — on Windows with Active Directory

Download: http://a-weinert.de/pub/svn-win-de.pdf

One of the worst bugs: SVN ignores and forgets the file modification time (mTime) on first … weiter lesen »

Albrecht Weinert

Subversion on Windows

The Tutorial

Subversion — on Windows with Active Directory

is available in German language as

Subversion — mit Windows und Active Directory

It describes the installation and the experiences gained with an subversion (SVN) server in a Windows domain environment.

Authentication of SVN clients (Browser, Eclipse, svn.exe, Tortoise etc.) is done — of course — using the Active Directory domain accounts.

Download: http://a-weinert.de/pub/svn-win-de.pdf

Comments, corrections, completions and translations are welcome.

Albrecht Weinert

Windows (2003) DNS and DHCP from command line

Administering a well running DHCP and DNS on a Windows 2003 server is quite easy with the graphical tools — if the domain and number of tasks is small. But sooner or later the administrator wants automating those tasks … weiter lesen »

Albrecht Weinert

WordPress (en)

This Blog hosted at 1&1 uses WordPress. Please find here some remarks on usage and experiences.

The Software

This blog is running since 2008 starting with WordPress’s German version 2.6.0 and using a modified TerraFirma theme (see below). In August 2009 it was updated to 2.8.4 “by hand”.

In January 2013 it was switched over to a (new) MySQL5.0 as the old 4.0 one (in contract 1&1 business 5) was no more connectable by php. Experiments to migrate the whole thing (incuding users, passwords, permalinks, design and all) to another (1&1 virtual) server and WordPress 3.5 run technically OK but in the end un-satisfctory — put mildly … weiter lesen »

Albrecht Weinert

A comprehensive German dictionary for Eclipse

If your HTML, XML and JavaDoc or Doxygen is to some extend German (and not just English) Eclipse’s spell checker gets more bothering than a help. Here the developer gets a comprehensive German dictionary containing more than 22 800 word forms including OO, Java and process … weiter lesen »

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