Dates and Events: |
OSADL Articles:
2023-11-12 12:00
Open Source License Obligations Checklists even better now
Import the checklists to other tools, create context diffs and merged lists
2022-07-11 12:00
Call for participation in phase #4 of Open Source OPC UA open62541 support project
Letter of Intent fulfills wish list from recent survey
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 |
COOL - Compact OSADL Online Lectures - November 2024 edition
OSADL talks at ESE Embedded Software Engineering Kongress
Real Time Linux Workshops
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15th Real Time Linux Workshop, October 28 to 31, 2013 at the Dipartimento Tecnologie Innovative, Scuola Universitaria Professionale della Svizzera Italiana in Lugano-Manno, Switzerland
Announcement - Call for participation (ASCII) - Hotels - Directions - Agenda - Paper Abstracts - Presentations - Registration - Abstract Submission - Sponsors - Gallery
The Implementation of Node Order Protocol Based on Userspace I/O
Yong Sheng, DSLab, Lanzhou University, China
Jun Hu, DSLab, Lanzhou University, China
Nicholas McGuire, DSLab, Lanzhou University, China
Qingguo Zhou, DSLab, Lanzhou University, China
Real-time communication is widely deployed in safety-critical systems, especially in distributted systems, real-time network communication acts as one of the core components. Time-triggered Protocols (TTP) have been accepted for safety-critical communication, however, existing TTP lacks of flexibility and has low average utilization of resources. The Node Order Protocol (NOP) eliminates the communication protocol's need for global time, and compensate for the weakness of conventional node order protocols. This paper implements NOP utilizing rtl8139dl NIC based on Userspace I/O (UIO), which moves rtl8139dl NIC driver from kernel space to userspace. The experiment shows that the implemention satisfy the design of NOP.
