Serial port receiving and processing system of FC-AE-1553 bus protocol bridging universal asynchronous receiver-transmitter

Abstract

The invention relates to a serial port receiving and processing system of an FC-AE-1553 bus protocol bridging universal asynchronous transceiver, and belongs to the technical field of FC-AE-1553 bus and serial port communication. The system comprises a main controller module, an optical fiber switch, a bridge module and a universal asynchronous receiver-transmitter. The length of each message in the serial communication protocol is reasonably designed according to the length of the data read by the main controller module in the data buffer area of the bridge module every time, so that the overtime phenomenon of reading the data in the data buffer area of the bridge module by the main controller module can be effectively avoided; the compatibility problem of a command / response communication mode and a peer-to-peer transceiving communication mode is perfectly solved; data receiving is carried out by adopting interruption, so that the real-time performance of data receiving can be improved; and meanwhile, the method has relatively high fault tolerance performance, not only can correctly process a plurality of normal serial port messages with different message lengths, data frame headers and data frame tails, but also can correctly process various abnormal messages.

Description

technical field [0001] The invention belongs to the technical field of FC-AE-1553 bus and serial port communication, and relates to a serial port receiving and processing system of an asynchronous transceiver device for bridging the FC-AE-1553 bus protocol. Background technique [0002] The FC-AE-1553 bus is an extension of the MIL-STD-1553B bus in terms of bandwidth, address space and data transmission volume, and its purpose is to better support the communication between various elements in the avionics system. The FC-AE-1553 bus protocol defines a command / response bus, using Fiber Channel technology, generally composed of network controllers, network terminals, Fiber Channel networks themselves, FC-AE-1553 bus bridges and MIL-STD-1553B bus composition. [0003] Serial interface is a commonly used interface in computer application systems. Serial communication refers to a communication method that transmits data bit by bit between peripherals and computers through data si...

AI Technical Summary

Problems solved by technology

[0005]Since the "command / response" communication method and the "peer-to-peer sending and receiving" communication method are incompatible in terms of communication mechanism, therefore, in order to implement the FC-AE-1553 protocol The bridge between the universal asynchronous transceiver device must solve the problem of "reasonable coexistence" between the command / response communication mode and the peer-to-peer communication mode, otherwise the main controller module will receive wrong data messages, resulting in the main control The communication between the device module and the UART timed out or failed

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