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Multi-serial-port extension design method applied to fusion terminal

A design method and multi-serial port technology, applied in the direction of instrumentation, electrical digital data processing, etc., can solve the problems of insufficient serial ports and peripheral interfaces of the main control CPU of the fusion terminal

Pending Publication Date: 2022-02-18
QINGDAO TOPSCOMM COMM +1
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Problems solved by technology

[0004] Aiming at the deficiencies and defects of the existing technology, the present invention provides a multi-serial port expansion design method applied to the fusion terminal, which solves the problem of insufficient serial port peripheral interface of the main control CPU of the fusion terminal, and satisfies the application of multi-channel serial ports of the fusion terminal interface, expanding the application scenarios of converged terminals

Method used

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  • Multi-serial-port extension design method applied to fusion terminal
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  • Multi-serial-port extension design method applied to fusion terminal

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] Such as Figure 1 The data flow diagram of a multi-serial port extension design method applied to a fusion terminal includes application layer, driver layer, extended MCU, physical layer and other parts.

[0021] By establishing a MUX communication protocol between the driver layer and the extended MCU, multi-serial port address allocation and multi-serial port virtualization are realized, and the independence and concurrency of the application layer accessing the physical layer are realized.

[0022] The specific data flow transmission includes the following steps:

[0023] Step 1: The ap...

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Abstract

The invention discloses a multi-serial-port extension design method applied to a fusion terminal; an extension MCU is added on the basis of a master control CPU of the fusion terminal, the extension MCU and the master control CPU are connected through a high-speed serial port, and multi-serial-port extension application is realized by adopting an MUX extension protocol. The whole method comprises implementation of an application layer, a driving layer, an extended MCU, a physical layer and the like, multi-serial-port address allocation and multi-serial-port virtualization are achieved by establishing an MUX communication protocol between the driving layer and the extended MCU, and independence and concurrency of the application layer accessing the physical layer are achieved.

Description

technical field [0001] The invention relates to the technical field of electric power Internet of Things intelligent terminals, in particular to a multi-serial port expansion design method applied to a fusion terminal. Background technique [0002] As the edge in the "cloud-pipe-edge-end" architecture of the smart grid IoT system, the intelligent fusion terminal has functions such as information collection, edge computing, and device perception. Therefore, the terminal of the power Internet of Things plays a pivotal role. A necessary condition for converged terminals to realize multi-device access. According to the requirements of "Technical Specifications for Intelligent Convergence Terminals in the Taiwan Area", the terminal should have 2 RS232 communication interfaces and 4 RS485 communication interfaces; therefore, our multi-serial port extension design method can meet the requirements of multi-serial communication interfaces on limited resources. [0003] The hardware ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42G06F13/40
CPCG06F13/4282G06F13/4068
Inventor 葛玉磊郑耀汉张东升侯胜坤徐旭王文刚
Owner QINGDAO TOPSCOMM COMM
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