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Method and system for realizing 1553B bus communication based on single chip microcomputer

A technology of bus communication and single-chip microcomputer, which is applied in the direction of memory system, architecture with a single central processing unit, computer, etc., can solve the problems of low data processing efficiency and low flexibility, so as to improve data processing efficiency, rationally utilize resources, and avoid The effect of internal interrupt conflicts

Pending Publication Date: 2021-11-02
SHANGHAI INST OF SPACE PROPULSION
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  • Application Information

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Problems solved by technology

[0004] Regarding the above-mentioned related technologies, the inventor believes that there are problems of low data processing efficiency and low flexibility, therefore, it is necessary to propose a technical solution to improve the above-mentioned technical problems

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  • Method and system for realizing 1553B bus communication based on single chip microcomputer
  • Method and system for realizing 1553B bus communication based on single chip microcomputer

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[0053] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0054]The present invention provides a method and system for realizing 1553B bus communication based on a single-chip microcomputer, defines a one-dimensional two-element 8-bit character array, and a 16-bit integer variable, establishes a union, and uses the variable sharing in the union Storage space, complete conversion of byte and word, and flexible reading of high and low bits of byte variables. According to the needs of the program, the bytes or words in the union can be updated at any time and acc...

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Abstract

The invention provides a method and system for realizing 1553B bus communication based on a single chip microcomputer, and the method comprises a method for reading a 1553B chip by the single chip microcomputer, which comprises the following steps: firstly reading high 8 bits, setting MSB_LSBn = '1', carrying out dumb reading operation, and discarding data; waiting for a period of time; setting MSB_LSBn = '0', reading a low address, and storing a high byte RTdata.bytedata [1] of a common body RTdata; setting MSB_LSBn = '1', reading a high address, and storing a low byte RTdata.byte [0] of a common body; and enabling a function return value to be a character RTdata.worddata of the common body. According to the invention, the contradiction between the 8-bit data interface of the single-chip microcomputer and the 1553B 16-bit data bus interface is overcome, the data processing efficiency is improved, and certain flexibility is achieved.

Description

technical field [0001] The present invention relates to the technical field of communication between a single-chip microcomputer and peripheral chips, in particular to a method and a system for realizing 1553B bus communication based on a single-chip microcomputer, especially to a method for realizing 1553B bus communication based on a single-chip microcomputer. Background technique [0002] The 1553B bus is a standard bus for networking electronic subsystems of the U.S. Air Force. This bus has extremely high reliability and is widely used in military fields such as aerospace. The message of the 1553B bus is composed of multiple 16-bit words, which is fast and efficient. But at present, many aerospace products use single-chip microcomputer as the main control CPU. There is only 8-bit data bus, which is generally processed by bytes inside the single-chip microcomputer. Because the processing of data bits by the single-chip microcomputer is not flexible, the received data will...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F15/78G06F13/42G06F12/06G06F3/06G06F9/30
CPCG06F15/7807G06F3/064G06F13/4221G06F12/063G06F9/30134
Inventor 黄柳莺张毅范晓琳李奕辉
Owner SHANGHAI INST OF SPACE PROPULSION
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