A bus signal protocol decoding method

Abstract

The invention discloses a bus signal protocol decoding method, comprising: pre-constructing a signal sequence processing model library and a protocol processing model library; obtaining an electrical signal to be decoded; extracting the timing feature points of the original data of the electrical signal; Timing feature points, matching the corresponding signal timing processing model in the signal timing processing model library; converting electrical signals into corresponding low-level protocol frame packet data according to the signal timing processing model; extracting data feature points of low-level protocol frame packet data; according to the low-level protocol The data feature points of the frame packet data match the corresponding protocol processing model in the protocol processing model library; according to the protocol processing model, the low-level protocol frame packet data is converted into the corresponding high-level protocol frame data. In the case of unknown bus protocol types and attribute parameters, the electrical signals on the bus can be identified and analyzed, and the protocol decoding can be completed, which greatly simplifies the porting of protocol analysis functions between different products.

Description

technical field [0001] The invention relates to the technical field of protocol decoding, in particular to a bus signal protocol decoding method. Background technique [0002] In the electronics industry, it is often applied to measurement analyzers, which are used to collect and store electrical signals on the bus, and perform various analysis operations on the signals. One of the most important analysis operations is protocol decoding. "Protocol decoding" refers to analyzing the timing relationship of the collected bus signals, such as analog data or logic levels, according to the description of the protocol standard specification, and analyzing the data structure that can intuitively express the semantics of the protocol. The instrument will display the decoded result to the user, so that the user can understand the communication status of the data on the bus. [0003] At present, the practice of various measurement and analysis instruments is to assume that the user al...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a bus signal protocol decoding method, which can enable the measurement and analysis instrument to decode the bus data without knowing the type and attribute parameters of the bus protocol, and at the same time solve the problem of difficult porting of the protocol analysis module

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