Communication processing method for bridging MIL-STD-1553 and UART through using FC-AE-1553 protocol

Abstract

The invention relates to a communication processing method for bridging an MIL-STD-1553 and a UART through using an FC-AE-1553 protocol in an avionics test system, and belongs to the technical field of FC-AE-1553 bus, MIL-STD-1553 bus and UART communication. According to the communication processing method provided by the invention, when an NC-end host program configures a message to an NC-end FPGA program, the phenomenon of read-write conflict when the NC-end host program and the NC-end FPGA program access a ''shared storage area'' is avoided; the overtime phenomenon that an NC end reads the data in an NT data buffer area is avoided, and compatibility of a command / response communication mode and a peer-to-peer transceiving communication mode is perfectly achieved; a message mapping method is adopted for message configuration, hardware memory space does not need to be increased, the NC-end FPGA program does not need to be changed, and the method has the advantages of being simple in program processing, small in system overhead, low in cost and the like; and the method is especially suitable for the situation that the types of messages sent by an upper computer each time are many, and the sending frequency is high.

Description

technical field [0001] The invention belongs to the technical field of FC-AE-1553 bus, MIL-STD-1553 bus and UART communication, and specifically relates to a communication processing method for bridging MIL-STD-1553 and UART by FC-AE-1553 protocol in an avionics test system. Background technique [0002] refer to figure 1 , the FC-AE-1553 protocol and MIL-STD-1553 are mutually converted in the bridge of the avionics test system, and the NC node sends data to the NT device in the bridge through the optical fiber switch based on the FC-AE-1553 protocol , the NT device will forward the received data to the RT device through the MIL-STD-1553 bus; the RT device will send data to the NT device in the bridge through the MIL-STD-1553 bus, and the NT device will receive the data based on FC-AE The -1553 protocol is forwarded to the NC node through the fiber optic switch. At the same time, the bridge bridges the FC-AE-1553 protocol with the Universal Asynchronous Transceiver (UART),...

AI Technical Summary

Problems solved by technology

Since the number of messages that can be accommodated in the message stack of the NC-side FPGA program is limited (maybe less than N), the configuration is performed according to the above method. Once the number of messages configured by the NC-side host program is greater than the message stack capacity, the NC-side FPGA program FC-AE-1553 message will be lost, eventually leading to communication failure

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