CN102567071A - Virtual serial port system and communication method for same - Google Patents

Abstract

The invention discloses a virtual serial port system and a communication method thereof, which are used to realize the cross-OS platform virtual serial port system and prevent the virtual serial port system from being unable to communicate on different OS platforms. A virtual serial port system provided by the present invention includes: a serial port client component module located at the client, used to provide the user with an interface for interacting with the serial port server component module, and generate a virtual serial port message according to user operations, and send it to the serial port server Terminal component module; the serial port server component module located at the server side, used to analyze the virtual serial port message sent by the serial port client component module, and determine the operating system platform corresponding to the message according to the analysis result.

Description

A virtual serial port system and its communication method

technical field

The invention relates to the technical field of communication, in particular to a virtual serial port system and a communication method thereof.

Background technique

In the field of industrial control, there are many communication terminal devices. These devices communicate with the master device through physical serial ports. As the number of terminal devices continues to increase, the number of corresponding physical serial ports on the master device also continues to increase.

In the prior art, the continuous increase of the number of physical serial ports is generally supported by adding new serial port cards, but this not only increases the hardware cost, but also increases the maintenance difficulty. Therefore, a virtual serial port technology is proposed in the prior art to solve this problem. That is, the master station device does not configure a physical serial port, but simulates it through software. For the serial port application program running on the master station, the object of operation still looks like a serial port, so that the original software investment can be protected. Achieve smooth switching.

The virtual serial port technology has been widely used at present, and different manufacturers have different implementations. The main problem is that there is no unified solution for cross-operating system (OS) platforms. For example, the solutions adopted for Windows and Linux operating systems are completely different. From the user's point of view, the user experience of products with similar functions is very different. For example, the Windows platform provides a user operation configuration interface, while the Linux platform provides command line operation configuration. From the perspective of program development, a large number of repetitive work leads to the reduction of development efficiency, which is not conducive to the rapid launch of products.

Contents of the invention

The embodiment of the present invention provides a virtual serial port system and a communication method thereof, which are used to realize a cross-OS platform virtual serial port system and prevent the virtual serial port system from being unable to communicate on different OS platforms.

A virtual serial port system provided by an embodiment of the present invention includes:

The serial port client component module located at the client is used to provide the user with an interface for interacting with the serial port server component module, and generates a virtual serial port message according to user operations, and sends it to the serial port server component module located at the server side;

The serial port server component module located at the server side is used to analyze the virtual serial port message sent by the serial port client component module, and determine the operating system platform corresponding to the message according to the result of the analysis.

A communication method of a virtual serial port system provided by an embodiment of the present invention includes:

Provide the user with an interface for interacting with the serial port server component module through the serial port client component module set on the client, and generate a virtual serial port message according to the user operation, and send it to the serial port server component module located on the server side;

The virtual serial port message sent by the serial port client component module is analyzed by the serial port server component module set on the server side, and the operating system platform corresponding to the message is determined according to the analysis result.

In the embodiment of the present invention, the serial port client component module located at the client is used to provide the user with an interface for interacting with the serial port server component module, and generate a virtual serial port message according to user operations, and send it to the serial port server component module located at the server side The serial port server-side component module located at the server side is used to analyze the virtual serial port message sent by the serial port client component module, and determine the operating system platform corresponding to the message according to the analysis result, thereby realizing the cross-OS platform of the virtual serial port system Communication enables the cross-platform application of virtual serial port technology to be realized conveniently and quickly, thereby improving customer experience.

Description of drawings

Fig. 1 is a schematic structural diagram of a virtual serial port system provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a virtual serial port software distributed component architecture provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a serial port server component module provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a communication method of a virtual serial port system provided by an embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a virtual serial port system and a communication method thereof, which are used to realize a cross-OS platform virtual serial port system and prevent the virtual serial port system from being unable to communicate on different OS platforms.

A cross-platform virtual serial port system provided by an embodiment of the present invention adopts a distributed component architecture, that is, adopts a client/server (C/S) architecture design, so that the server (Server) end components can support cross-platform operations.

The technical solutions provided by the embodiments of the present invention will be described below in conjunction with the accompanying drawings.

Referring to Fig. 1, a kind of virtual serial port system provided by the embodiment of the present invention includes:

The serial port client component module 101 located at the client is used to provide the user with an interface for interacting with the serial port server component module, and generates a virtual serial port message according to user operations, and sends it to the serial port server component module 102 located at the server side;

The serial port server component module 102 located at the server side is used to analyze the virtual serial port message sent by the serial port client component module 101, and determine the operating system platform corresponding to the message according to the result of the analysis.

Preferably, the serial port server component module 102 includes:

The serial port management unit 201 is used to analyze the virtual serial port message sent by the serial port client component module 101, and determine that the virtual serial port message contains the configuration class command of the virtual serial port, or the data of the virtual serial port; The result is sent to the serial port client component module 101;

The adaptation unit 202 is configured to determine the operating system platform corresponding to the virtual serial port message according to the analysis result of the serial port management unit 201 , and send the result returned by the operating system platform to the serial port management unit 201 .

Preferably, the adaptation unit 202 includes:

Win2L adaptation unit 301, for when the virtual serial port message includes the configuration class command of the virtual serial port, determine the operating system platform that needs to be sent to the command, and send the command execution result returned by the operating system platform to the serial port management unit 201 ;

The driver adaptation unit 302 is used to determine the black box driver decoding component module of the operating system platform that needs to be sent to the command when the virtual serial port message contains the data of the virtual serial port, and the execution result of the black box driver decoding component module Send to the serial port management unit 201.

Preferably, the Win2L adaptation unit 301 receives configuration commands of the virtual serial port by simulating the API interface of the Windows platform on the Linux platform.

Preferably, the operating system platform is a Linux platform or a Windows platform.

A detailed explanation is given below.

The virtual serial port software architecture provided by the embodiment of the present invention, as shown in Figure 2, adopts a structural design of low coupling and high cohesion on the software architecture, and the entire virtual serial port software is a distributed software, including: serial port client components, serial port Server component, black box driver decoding component.

Be positioned at the serial port client component module 101 of client, be called for short the serial port client component, can develop based on Windows platform, provide the user operation interface, between the serial port server component module 102 (being called for short serial server component) positioned at the server end, communicate by network. Since it is relatively simple to develop a GUI program in the Windows operating system, the serial port client component can be developed on the Windows platform to provide a graphical interface for user operation.

The serial port client component is also responsible for issuing virtual serial port configuration commands and diagnostic debugging commands, and receiving command execution results returned by the serial port server component. Wherein, the configuration commands include, for example, adding or deleting a virtual serial port, association of a virtual serial port, and the like. The diagnostic and debugging commands include sending and receiving data through the serial port, statistics of data, reporting and displaying, etc.

Moreover, the serial port client component is also responsible for receiving status information reported by the serial port Server component, such as: virtual serial port sending and receiving statistics, virtual serial port data flow tracking. The serial port client component does not need to save the configuration process data, all data is saved in the serial port Server component side, so the design of the serial port client component is simplified, and the serial port client component does not need to consider cross-platform transplantation, that is, the virtual serial port software runs on different OS platforms In the application scenario, the same serial client component can be used, because the serial client component runs on an independent PC.

That is to say, the serial port client component described in the embodiment of the present invention mainly realizes the graphical user interface (GUI, Graphical User Interface, also known as the graphical user interface), and the user can realize the interaction with the Server through the client interface, specifically including the command and the results are displayed. Commands include: configuration commands and diagnostic debugging commands.

The serial server component in the embodiment of the present invention is designed with a Win2L adaptation unit 301 (referred to as the Win2L adaptation layer) and a driver adaptation unit 302 (referred to as the driver adaptation layer).

Referring to Figure 3, the serial port Server component supports multiple OS platforms and can be implemented in standard C language. In order to shield the API interface implementation differences of the underlying OS, a Win2L adaptation layer is designed to simulate the API interface of the Windows platform on the Linux platform, thereby It can quickly switch from Windows to Linux without affecting the original Windows-related implementation.

Serial port management software, whether it is signaling processing or media processing, is considered to be running on the Windows platform, using the API programming interface provided by Windows, but on the Linux platform, these interfaces do not actually exist, and the Win2L adaptation layer is an analog The API interfaces of these Windows are realized, so that the serial server component originally developed on the Windows platform can be quickly transplanted to the Linux platform.

In addition, since the serial port server component and the black box driver decoding component module of the operating system platform (referred to as the black box driver decoding component) run on the same pc, the driver adaptation layer shields the difference of the underlying driver program. The upper application provides a unified interface.

The black box driver decoding component is logically independent, and the driver development modes of different OS platforms are very different. For cross-platform, different black box driver decoding components are provided. For the Windows platform, the black box driver is provided as a sys file The decoding component function, for the Linux platform, provides the black box driver decoding component function in the ko file.

The serial server component works in the user state, and the black box driver decoding component works in the kernel state. The entire serial port data flow is roughly as follows:

The serial port server component receives the data sent by the serial port client component from the network port, and then writes it to the corresponding serial port device, so that the serial port application program can read it out; Read the data and send it from the network port to the serial port client component.

In the embodiment of the present invention, the serial port Server component and the black box driver decoding component interact to complete the sending and receiving of serial port data. For the Windows platform, the read/write operation of the serial port Server component to the kernel mode serial port device is realized by the device_ioctl mechanism. For the Linux platform, through the proc The mechanism realizes the read/write operation of the serial server component to the serial device in the kernel state.

Referring to Fig. 4, a communication method of a virtual serial port system provided by an embodiment of the present invention includes steps:

S101. Provide the user with an interface for interacting with the serial port server component module through the serial port client component module set on the client, and generate a virtual serial port message according to the user operation, and send it to the serial port server component module located at the server side;

S102. Analyzing the virtual serial port message sent by the serial port client component module through the serial port server component module set on the server side, and determining the operating system platform corresponding to the message according to the parsing result.

Preferably, the virtual serial port message sent by the serial port client component module is analyzed through the serial port server-side component module set on the server side, and the operating system platform corresponding to the message is determined according to the analysis result, including:

Through the serial port management unit in the serial port server component module, the virtual serial port message sent by the serial port client component module is analyzed, and it is determined that the virtual serial port message contains the configuration class command of the virtual serial port, or the data of the virtual serial port;

Through the adaptation unit in the serial port server component module, according to the analysis result of the serial port management unit, determine the operating system platform corresponding to the virtual serial port message, and send the result returned by the operating system platform to the serial port management unit;

The serial port management unit sends the result returned by the adaptation unit to the serial port client component module.

Preferably, the adaptation unit, according to the analysis result of the serial port management unit, determines the operating system platform corresponding to the virtual serial port message, and sends the result returned by the operating system platform to the serial port management unit, including:

When the configuration class command of the virtual serial port is included in the virtual serial port message, determine the operating system platform that needs to be sent to the command, and send the command execution result returned by the operating system platform to the serial port management unit;

When the virtual serial port message contains the data of the virtual serial port, it is determined that the command needs to be sent to the black box driver decoding component module of the operating system platform, and the execution result of the black box driver decoding component module is sent to the serial port management unit.

Preferably, the adaptation unit receives the virtual serial port configuration commands sent by the serial port management unit by simulating the API interface of the Windows platform on the Linux platform.

Preferably, the operating system platform is a Linux platform or a Windows platform.

In summary, in the embodiment of the present invention, the serial port client component module located at the client is used to provide the user with an interface for interacting with the serial port server component module, and generate virtual serial port messages according to user operations, and send them to the server-side component module. Serial port server-side component module; the serial port server-side component module located at the server side is used to analyze the virtual serial port message sent by the serial port client component module, and determine the operating system platform corresponding to the message according to the analysis result, thereby realizing the virtual serial port The system's cross-OS platform communication enables the cross-platform application of virtual serial port technology to be realized conveniently and quickly, thereby improving customer experience.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a A system for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising a system of instructions, the The system implements the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (10)

1. A virtual serial port system, characterized in that the system comprises: The serial port client component module located at the client is used to provide the user with an interface for interacting with the serial port server component module, and generates a virtual serial port message according to user operations, and sends it to the serial port server component module located at the server side; The serial port server component module located at the server side is used to analyze the virtual serial port message sent by the serial port client component module, and determine the operating system platform corresponding to the message according to the result of the analysis. 2. The system according to claim 1, wherein the serial port server component module includes: The serial port management unit is used to analyze the virtual serial port message sent by the serial port client component module, and determine that the virtual serial port message contains the configuration command of the virtual serial port, or the data of the virtual serial port; and, the result returned by the adaptation unit is sent to Serial client component module; The adaptation unit is used to determine the operating system platform corresponding to the virtual serial port message according to the analysis result of the serial port management unit, and send the result returned by the operating system platform to the serial port management unit. 3. The system according to claim 2, wherein the adaptation unit comprises: The Win2L adaptation unit is used to determine the operating system platform that needs to be sent to when the configuration class command of the virtual serial port is included in the virtual serial port message, and send the command execution result returned by the operating system platform to the serial port management unit; The driver adaptation unit is used to determine the black box driver decoding component module of the operating system platform to which the command needs to be sent when the virtual serial port message contains the data of the virtual serial port, and send the execution result of the black box driver decoding component module to to the serial port snap-in. 4. The system according to claim 3, wherein the Win2L adaptation unit receives configuration commands of the virtual serial port by simulating the API interface of the Windows platform on the Linux platform. 5. The system according to claim 3 or 4, wherein the operating system platform is a Linux platform or a Windows platform. 6. A communication method of a virtual serial port system, characterized in that the method comprises: Provide the user with an interface for interacting with the serial port server component module through the serial port client component module set on the client, and generate a virtual serial port message according to the user operation, and send it to the serial port server component module located on the server side; The virtual serial port message sent by the serial port client component module is analyzed by the serial port server component module set on the server side, and the operating system platform corresponding to the message is determined according to the analysis result. 7. method according to claim 6, is characterized in that, described by the serial port server end component module that server end is provided with, the virtual serial port message that described serial port client component module sends is analyzed, determines this according to analysis result The operating system platform corresponding to the message, including: Through the serial port management unit in the serial port server component module, the virtual serial port message sent by the serial port client component module is analyzed, and it is determined that the virtual serial port message contains the configuration class command of the virtual serial port, or the data of the virtual serial port; Through the adaptation unit in the serial port server component module, according to the analysis result of the serial port management unit, determine the operating system platform corresponding to the virtual serial port message, and send the result returned by the operating system platform to the serial port management unit; The serial port management unit sends the result returned by the adaptation unit to the serial port client component module. 8. The method according to claim 7, wherein the adaptation unit, according to the analysis result of the serial port management unit, determines the corresponding operating system platform of the virtual serial port message, and sends the result returned by the operating system platform to the serial port Snap-ins, including: When the configuration class command of the virtual serial port is included in the virtual serial port message, determine the operating system platform that needs to be sent to the command, and send the command execution result returned by the operating system platform to the serial port management unit; When the virtual serial port message contains the data of the virtual serial port, it is determined that the command needs to be sent to the black box driver decoding component module of the operating system platform, and the execution result of the black box driver decoding component module is sent to the serial port management unit. 9. The method according to claim 8, wherein the adaptation unit, by simulating the API interface of the Windows platform on the Linux platform, receives the configuration class command of the virtual serial port sent by the serial port management unit. 10. The method according to claim 9, wherein the operating system platform is a Linux platform or a Windows platform.

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