A time-triggered bus planning and scheduling method

Abstract

The invention provides a time-triggered bus planning and scheduling method, which solves the problem that the traditional event-triggered communication bus or network planning and scheduling method does not consider the transmission characteristics of communication messages in the time domain, and cannot be applied to the bus system using a time-triggered communication mechanism. The time-triggered bus planning and scheduling method first performs the time-triggered protocol bus topology configuration and sets the global parameters of the TTP bus; secondly configures the parameters of each node of the bus; Planning and allocation of the relationship between each node, complete the planning and arrangement of messages on different TDMA cycles in the bus cluster cycle in turn, and the planning and arrangement of messages in time slots within the TDMA cycle; perform parameter verification and schedulability analysis on the above planning and scheduling schemes , to verify the rationality of the bus parameter settings and the correctness of the scheduling table, and after the verification is passed, the configuration information of each node under the operation plan can be obtained, which can be displayed graphically and output in the form of a file.

Description

technical field [0001] The invention belongs to the technical field of computer applications, and in particular relates to a time-triggered bus planning and scheduling method. Background technique [0002] The TTP bus uses a time division multiplexing mechanism to implement message transmission scheduling, and is triggered by a global clock. The behavior of the entire system is not only definite in function, but also definite in timing. The scheduled transmission of TTP bus data is triggered by time advancement. The time slot sequences of different nodes form a TDMA cycle, and one or more TDMA cycles form a cluster cycle. The scheduling mechanism of the TTP bus requires that each node in the system be assigned a fixed periodic time slot during system design. [0003] Stable synchronous TTP nodes are allowed to send TTP frames on two channels within a periodic fixed time range to realize the transmission capability of the bus. The periodic sequence of node slots is called a...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the traditional event-triggered communication bus or network planning and scheduling method does not consider the transmission characteristics of communication messages in the time domain, and cannot be applied to the bus system using a time-triggered communication mechanism, and provides a time-triggered bus planning and scheduling method Method for implementing planning and scheduling of time-triggered bus message transmissions

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