UDS network layer protocol implementation method, computer readable storage medium and computer equipment

Abstract

The invention belongs to a UDS protocol implementation method, mainly solves the problems of complex implementation, multithreading and low data processing efficiency of a UDS network layer protocol in the prior art, and further provides a UDS network layer protocol implementation method, a computer readable storage medium and computer equipment. The implementation method comprises the following steps: step 1, receiving application layer data, and determining single-frame data transmission or multi-frame data transmission according to a required transmission data length; step 2, if the single-frame data is sent, directly sending a waiting ECU response message; if the multiple frames of data are sent, the ECU response control frame is waited after the first frame of data is sent, the subsequent data frame is sent after the ECU response control frame is received, and the ECU response message is waited until all the multiple frames of data are sent; and step 3, if the waiting ECU responsemessage is overtime, determining a result according to the inhibition positive response flag bit; and if the ECU response message is received within the specified time, determining a result accordingto the frame number of the ECU response message.

Description

technical field [0001] The invention belongs to a UDS protocol realization method, and in particular relates to a UDS network layer protocol realization method, a computer-readable storage medium and computer equipment. Background technique [0002] At present, in the field of new energy commercial vehicles, the mainstream UDS (Unified Diagnostic Services) fault diagnosis specification is ISO15765, which is the diagnosis on the CAN network. ISO15765 is a complex and complete automotive network architecture. Its software implementation is a large-scale system engineering. The complexity is reflected in the transmission protocol of the network layer and the fault diagnosis of the application layer. The most difficult part to implement is the network layer. Transfer Protocol. The main function of the network layer is to provide segmentation, reassembly, and flow control methods for communication between peer entities, while also specifying timeout and error handling in various...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to solve the problems of complex UDS network layer protocol implementation, multi-threading and low data processing efficiency in the prior art, and provide a method for implementing the UDS network layer protocol, a computer-readable storage medium, and a computer device

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