An online reconfiguration method based on pcie bus

Abstract

The invention discloses an on-line reconstruction method based on a PCIe bus, and the method comprises the following steps: S1, enabling an FPGA to receive a total instruction file of a reconstructionfile through the PCIe bus, storing the total instruction file, wherein the total instruction file is used for recording a total logic relation between analysis blocks in the reconstruction file; S2,the FPGA receives an analysis block message of the reconstruction file through a PCIe bus, and analyzes and stores each frame of PCIe bus data of the analysis block message; S3, every time the FPGA analyzes one frame of PCIe bus data, performing online reconstruction logic operation processing on each analysis block in the currently analyzed frame of PCIe bus data to obtain a processing result ofthe analysis block until each frame of PCIe bus data of the analysis block message is processed; And S4, performing analyzing by the FPGA according to the total logic relationship among the analysis blocks and the processing result of each analysis block to obtain the online reconstruction logic. The method has the technical characteristics of simple structure, quick response, high-speed bus online reconstruction, simplicity and convenience.

Description

technical field [0001] The invention belongs to the technical field of industrial control automation, in particular to an online reconfiguration method based on a PCIe bus. Background technique [0002] With the development of industrial control technology, the task of control and the environment are constantly changing, and there are great requirements for the versatility, reliability, real-time performance, flexibility, and scalability of the controller. Industrial Ethernet technology and field bus are widely used in the fields of industrial automation, ship automation and vehicle automation. Most of the traditional methods are to use industrial Ethernet technology or field bus technology to reconfigure the controller online. The specific solution is to realize the online reconfiguration of the industrial controller with the "microprocessor + FPGA" architecture. The FPGA mainly completes the interface and timing control, and the microprocessor mainly completes the process...

AI Technical Summary

Problems solved by technology

The layout and wiring and data interaction process of the main processing chip of the board card are relatively complicated

The microprocessor uses an embedded system. When performing multi-task management, a large number of interrupt registers need to be set, task scheduling is inflexible, and real-time performance is poor.

Using this architecture and bus technology to realize online reconfiguration of industrial controllers, the real-time performance of industrial controllers is low, the processing response time is long, and the data transmission frequency is low

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