Time-triggered bus planning and scheduling method

Abstract

The invention provides a time-triggered bus planning and scheduling method, and solves the problem that a traditional event-triggered communication bus or network planning and scheduling method does not consider the transmission characteristics of communication messages in a time domain and cannot be suitable for a bus system adopting a time-triggered communication mechanism. The time-triggered bus planning and scheduling method comprises the following steps: carrying out time-triggered protocol bus topology configuration, and setting TTP bus global parameters; configuring parameters of each node of the bus; planning and distributing corresponding relations between nodes and time slots, nodes, messages, time slots and TDMA periods, and sequentially finishing planning and arrangement of themessages on the nodes in different TDMA periods in a bus cluster period and planning and arrangement of the messages in the time slots in the TDMA periods; carrying out the parameter verification andschedulability analysis on the planning and scheduling scheme, verifying the rationality of bus parameter setting and the correctness of a scheduling table, acquiring configuration information of each node under the operation scheme after verification is passed, and carrying out graphical display and file output.

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...

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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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