Software Design Of FC-AE Node Card Based On Real-time Operating System Support Time Triggered Communication

In recent years,with the rapid development of automotive electronics,aerospace,medical equipment,transportation and other fields,they have been increasingly demanding for high stability,high speed,and real-time performance in the network.TTE not only meets the requirements of non-real-time applications,but also meets the requirements of real-time applications for message determinism and real-time performance.Through the real-time dispatching of real-time messages without conflicting,the messages in the network are characterized by determinism and real-time.After learning the time-triggered Ethernet solution,if the time-triggered communication function is integrated into the current FC network,It can also make the messages in the FC network deterministic and real-time.Like the TTE,it becomes a kind of time scheduling network.On the basis of the existing time-triggered Ethernet,this paper uses the time-triggered communication scheme to make the TT-FC frame perform real-time scheduling without conflict and improve the real-time performance of the FC network.The main content of this paper is to develop a software suit of FC-AE-ASM node card supporting time-triggered communication in Vxworks real-time operating system and RTX real-time operating system.The time-triggered FC network is mainly composed of a terminal node card device that senses real-time data,an FC switch device that supports time-triggered communication,and a message schedule server.This article focuses on the development of the node card software.At present,only the FC-AE-ASM node card in the Vxworks system has been added a time trigger scheme.The FC-AE-1553 node card in the RTX system implements the basic data transmission function.The main work is to realize the design and implementation of drivers and upper application programs in the VxWorks real-time operating system and RTX real-time operating system respectively.Then,through the establishing of the environment for related functional testing and performance analysis,the design program is verified and further improved.