Bus signal protocol decoding method

Abstract

The invention discloses a bus signal protocol decoding method, comprising the following steps: preconstructing a signal timing processing model library and a protocol processing model library; obtaining an electrical signal to be decoded; extracting the timing characteristic points of the raw data of the electrical signal; and matching the corresponding signal timing processing module in the signal timing processing model library according to each timing characteristic point of the electrical signal; converting the electrical signal to the corresponding low-layer protocol frame packet data according to the signal timing processing model; extracting the data characteristic points of the low-layer protocol frame packet data; matching the corresponding protocol processing model in the protocol processing model library according to the data characteristic points of the low-layer protocol frame packet data; and converting the low-layer protocol frame packet data to the corresponding high-layer protocol frame data according to the protocol processing model. According to the bus signal protocol decoding method disclosed by the invention, the electrical signals on the bus can be identified and analyzed without knowing the type and attribute parameter of the bus protocol, the protocol decoding can be completed, and the transplant operation of protocol analysis functions between different products can be greatly simplified.

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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