Ethernet terminal equipment

Abstract

The invention discloses Ethernet terminal equipment, which comprises at least three processors and at least two data buffers, wherein a first processor is connected to a second processor through a first data buffer and is used for extracting valid application data from received data and transmitting the valid application data to the second processor through the first data buffer; the second processor is connected to a third processor through a second buffer and is used for running a real-time operating system and transmitting the generated application data to the third processor through the second data buffer; and the third processor is used for carrying out packaging on the application data sent by the second processor according to a preset data frame format and sending outwards. According to the Ethernet terminal equipment, the data reception and the data sending can be simultaneously carried out, the characteristics of full-duplex Ethernet are fully exerted, and meanwhile, the running load of each processor in the terminal equipment is effectively reduced and the real-time performance of the system is improved.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to an Ethernet terminal device. Background technique [0002] As Ethernet gradually replaces fieldbus in the field of industrial automation, the market demand for low-cost, small-sized, high-performance industrial Ethernet terminal node equipment is gradually increasing. The real-time protocol of the embedded Ethernet device based on the general-purpose microcontroller can only be realized by software, which cannot achieve high real-time performance. FPGA-based embedded Ethernet devices can implement custom hardware to achieve high real-time performance. [0003] However, the performance of the soft-core processor embedded in the FPGA (hereinafter referred to as "soft core") is low, and the Ethernet device with a single processor embedded in the FPGA has a large amount of communication data, and the operating load of the processor is relatively large. . On a multi-core...

AI Technical Summary

Problems solved by technology

[0003] However, the performance of the soft-core processor embedded in the FPGA (hereinafter referred to as "soft core") is low, and the Ethernet device with a single processor embedded in the FPGA has a large amount of communication data, and the operating load of the processor is relatively large.

On a multi-core platform, real-time protocol processing and other application software run in the operating system in the form of software, and the processing efficiency is very low.

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