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2022-07-05 - 11:51

Dates and Events:

OSADL Articles:

2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached


2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available


2016-11-12 12:00

Raspberry Pi and real-time Linux

Let's have a look at the OSADL QA Farm data


2016-09-17 12:00

Preemption latency of real-time Linux systems

How to measure it – and how to fix it, if it's too high?



Real Time Linux Workshops

1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013 - 2014 - 2015

Twelfth Real-Time Linux Workshop on October 25 to 27, in Nairobi, Kenya

Bringing openPOWERLINK to MIPS (Loongson 2F)

Yang Minqiang

Ethernet is not exactly known as a fieldbus - but it is reliable, fast and inexpensive technology, openPOWERLINK has a strong potential to turn ethernet into a full featured field bus for the automation industry. At the same time, due to Loogson 2F’s low power-consumption, fanless operation, availability of RT-PREEMPT based GNU/Linux RTOS and integration in form-factors suitable for industrial usage,we have been working on porting openPOWERLINK to the loongson 2F. The primary work is implementing a driver for RTL8169 which Loongson 2F uses as its ethernet apater. To benchmark and improve the performance we will implement an application over openPOWERLINK utilizing a typical multi-node setup. In this paper, we will state the motivation for the port to Loongson 2F and concentrate on key technical issues of porting driver for openPOWERLINK, which hopefully will aid others in similar tasks.

The problems we faced, some possible problems to be careful of and some tips how to tackle the porting task should provide some initial guidance for a openPOWERLINK porting job. Further we will present some benchmark results based on RT-PTREEMPT comparing the result on different flatform (Loongson and VIA C3) and a short outlook on future work in this area.