Configurable CAN bus protocol transceiving test method and system

Abstract

The invention provides a configurable CAN bus protocol transceiving test method and a configurable CAN bus protocol transceiving test system. A standard data frame defined by a CAN bus protocol is used so that the data length of a request frame or a response frame can be randomly set within a certain range, and if the data length of the request frame or the response frame exceeds the data frame length defined in the protocol, the data of the request frame or the response frame is split into a plurality of single frames to be sent; if multiple frames are received, frame splicing operation is carried out according to the frame content, multiple single frames are combined into a complete request frame or response frame, then response processing is carried out, and a user can change corresponding frame parameters in real time according to needs in the testing process; meanwhile, hardware interrupt signals are directly generated through the FPGA, a series of operations such as frame splicing and response frame sending are performed in an interrupt program, data uploading is not performed, response time is effectively shortened, and it can be guaranteed that the response time is shorterthan 2 milliseconds.

Description

technical field [0001] The present disclosure relates to the field of CAN bus protocol transceiver testing technology, in particular to a configurable CAN bus protocol transceiver testing method and system. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] CAN (Controller Area Network) belongs to the field bus category and is a serial bus communication network that effectively supports distributed control and real-time control. CAN was proposed by Bosch in Germany in the late 1980s. The initial motivation for the proposal was to realize the communication of modern and large electronic devices, reduce the use of signal lines, and design a single network bus to which all peripheral devices are connected. CAN bus has the advantages of high data transmission rate, strong anti-electromagnetic interference ability, high reliability, and perfect...

AI Technical Summary

Problems solved by technology

[0005] However, the inventors of the present disclosure have found that (1) the length of the remote control frame and its response frame is relatively fixed, and its form is single, which often cannot meet the diverse testing requirements of users; The time difference for sending the response frame) is required. Generally, the receiving end uploads the data to the host computer after receiving the request frame, and the host computer completes the response operation after corresponding judgment processing. This response mechanism sometimes cannot meet the needs of users for quick responses.

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