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Real-time performance of an open-source protocol stack for low-cost, embedded systems

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2 Author(s)
Bertolotti, I.C. ; IEIIT, CNR (Nat. Res. Council of Italy), Torino, Italy ; Tingting Hu

Modern embedded devices often require some form of network connectivity, to offer features like remote configuration, diagnostics, and firmware updates. The availability of open-source, lightweight, and portable protocol stacks, makes this goal relatively easy to accomplish, even on very low-cost devices. Interoperability is guaranteed because they implement, at the very least, the TCP/IP and UDP/IP protocols on an Ethernet interface. However, these applications are quite undemanding for what concerns real-time and, for this reason, little is known about the real-time characteristics of the underlying protocol stacks. This paper shows that an open-source protocol stack, when properly coupled with a real-time operating system and an Ethernet interface, can indeed reach an acceptable performance level and thus support an Ethernet-based field bus protocol on the device side.

Published in:

Emerging Technologies & Factory Automation (ETFA), 2011 IEEE 16th Conference on

Date of Conference:

5-9 Sept. 2011