1553B message receiving method based on RT address

Abstract

The invention relates to a 1553B message receiving method based on an RT address, and belongs to the field of bus design. The method comprises the following steps: defining a linked list array; defining a pointer array, wherein each element in the array points to the header of each element in the linked list array; when the BC sends a command message to the RT, writing the message in the message stack into the corresponding linked list node; and obtaining a message of a certain RT address from the linked list node pointed by the corresponding linked list pointer, and then moving the node out of the linked list. According to the invention, when the application software needs to obtain a certain RT address message, the searching time can be reduced, no extra processing branch is brought to the application software, and the defects of a traditional 1553B message receiving mechanism are overcome. The technical method is verified by a large number of experiments, and results show that the method is stable and reliable, the processing time when a certain specific RT message is acquired can be reduced indeed, and the execution efficiency is improved.

Description

technical field [0001] The invention belongs to the field of bus design, and in particular relates to a method for receiving 1553B messages based on RT addresses. Background technique [0002] The 1553B bus is a bus standard for information transmission between devices. It has bidirectional output characteristics, high real-time performance and reliability, and is currently widely used in the fields of aerospace, aircraft manufacturing and weapons. These fields have relatively high real-time requirements for message transmission on the bus. Traditional message processing methods generally use message traversal to search for processing, and sequentially judge messages in the message stack; for systems with multiple RT devices, this method requires It wastes a search time in the depth of the message addressing space, and for messages that are not "target RT", one way to deal with them is to continue to put them on the message stack and mark them to prevent them from being lost...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to provide a 1553B message receiving method based on RT address to solve the problem that the real-time performance of the traditional 1553B message receiving and processing strategy is not perfect, or It is to cause unnecessary complexity increase to the application software and other problems

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