Message sending delay test method, test upper computer and storage medium

Abstract

The invention discloses a message sending delay test method, a test upper computer and a storage medium. The method comprises the following steps: controlling a controller to be tested to send N types of original messages through a CAN bus; in the first detection period, message communication detection is carried out on the received N types of original messages, and a bus detection result is obtained; when the bus detection result is that the detection is passed, determining a message priority sequence corresponding to the N types of original messages; determining two adjacent original messages in the message priority as a previous message and a later message; determining an intermediate message based on the previous message and the later message, sending the intermediate message, and controlling the controller to be tested to send N types of original messages; and in the second detection period, performing message association detection on the preceding message and the following message, and obtaining a mechanism detection result corresponding to the preceding message. According to the method, whether the triggering factor of the message sending delay in the controller to be detected is external bus arbitration failure or internal message sending mechanism abnormity can be determined, and the accuracy of a detection result is guaranteed.

Description

technical field [0001] The invention relates to the technical field of communication testing, in particular to a message sending delay testing method, a testing host computer and a storage medium. Background technique [0002] The CAN bus protocol is a major in-vehicle communication protocol. Most of the control signals in the car are transmitted through the CAN bus. In order to meet the real-time signal requirements of the actual functions of the vehicle, and at the same time take into account the reliability of the communication network, when designing the CAN bus communication, messages with higher real-time requirements are assigned with higher priority message IDs and shorter message IDs. message period (hereinafter referred to as high-priority message); on the contrary, assign a lower-priority message ID and a longer message period (hereinafter referred to as low-priority message) to the message with lower real-time requirements ). During the message sending process,...

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a message transmission delay test method, testing the host computer and storage media, to solve the problem that the message transmission delay cannot be accurately determined

Images