CN112231013B - Method for establishing target server after IP address is changed by embedded VxWorks system - Google Patents

Method for establishing target server after IP address is changed by embedded VxWorks system Download PDF

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CN112231013B
CN112231013B CN202011095530.0A CN202011095530A CN112231013B CN 112231013 B CN112231013 B CN 112231013B CN 202011095530 A CN202011095530 A CN 202011095530A CN 112231013 B CN112231013 B CN 112231013B
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function
static library
target server
engineering
address
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CN112231013A (en
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唐亮
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Tianjin Jinhang Computing Technology Research Institute
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Tianjin Jinhang Computing Technology Research Institute
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/445—Program loading or initiating
    • G06F9/44505—Configuring for program initiating, e.g. using registry, configuration files
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/40—Transformation of program code
    • G06F8/41—Compilation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The invention relates to a method for establishing a target server after an IP address is changed by an embedded VxWorks system, belonging to the field of embedded software development. In the VxWorks integrated development environment, a static library project is created; defining a function in a static library engineering source program; declaring a structural variable of an 'afferent starting parameter' in the function, and assigning values to the variable; invoking a WDB initialization function and a WDB system suspension function; compiling static library engineering to generate a static library file; the static library is added to the application software, and the entry function of the static library is called before the connection target server is executed. The invention improves the applicability of connecting the VxWorks embedded operating system with the target server, and debugging through a network, is convenient for development and debugging of application programs, enhances the support of hardware environment on software development and debugging, and can still realize the connection of the target server under the condition that the application software changes the IP address of the network card.

Description

Method for establishing target server after IP address is changed by embedded VxWorks system
Technical Field
The invention belongs to the field of embedded software development, and particularly relates to a method for establishing a target server after an embedded VxWorks system changes an IP address.
Background
The VxWorks operating system is an embedded real-time operating system and is widely used for developing application software such as navigation, monitoring, command control and the like in the fields of ships, communication, military, aerospace and the like in China. In the VxWorks integrated development environment, application program development and debugging are carried out, and the most effective and convenient mode with the most extensive application is task tracking and power-off debugging through network connection target server. The debugging method has a certain limit that the WDB must be in ready state after the operating system is started, and the IP address of the network card connected for debugging cannot be changed in the application program. In an actual environment, the network interface is limited by hardware resources, and complex network topological relations in a specific scene are difficult to ensure that the application program of a user does not reset the IP address of the network card; under the condition, software debugging can be performed only by modifying the start-up setting of the VxWorks operating system, so that the software debugging is inconvenient to use, the efficiency of debugging work is affected, and the ideal condition of keeping the state of the operating system still cannot be met.
In order to solve the problem, starting from the principle of WDB initialization in the starting process of the VxWorks operating system, after the starting of the VxWorks operating system is completed, setting parameters necessary for connecting a target server, and further performing the re-initialization of the WDB, a method for realizing that after an application program changes the IP address of a network card, the target server connection can be established is provided.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to provide a method for establishing a target server after an IP address is changed by an embedded VxWorks system, so as to solve the problem that the target server connection can be established after the IP address of a network card is changed in an application program.
(II) technical scheme
In order to solve the technical problems, the invention provides a method for establishing a target server after an embedded VxWorks system changes an IP address, which comprises the following steps:
s1, creating a static library project in a VxWorks integrated development environment;
s2, defining a function in a static library engineering source program;
s3, declaring a structural variable of an 'afferent starting parameter' in the function, and performing assignment setting on the structural variable;
s4, calling a WDB initialization function and a WDB system suspension function;
s5, compiling static library engineering to generate a static library file;
s6, adding the static library into the application software, and calling an entry function of the static library before executing the connection target server.
Further, the application software alters the IP address of the network card before the method is run.
Further, the step S1 specifically includes the following steps:
s11, creating a DKM engineering in a work space where a working path is located;
s12, selecting a processor and a compiling chain which are the same as those of the application program from the built specs option;
s13, selecting gnu as a Build Tool in a Build target option;
s14, finishing engineering creation.
Further, the step S2 specifically includes the following steps:
s21, creating a source file c in a static library engineering source program;
s22, determining a function in the file, wherein the parameter is a variable char of the character string type.
Further, the step S3 specifically includes the following steps:
s31, declaring a BOOT_PARAMS type structural variable;
s32, performing assignment setting on the structural variable.
Further, the assigning setting includes assigning the network card address, the network card type, and the network card serial number to the structure variable.
Further, the step S4 specifically includes the following steps:
s41, after the configuration variable is set, the function sequentially executes a usrWdbInit () function and a wrSystemSuspend () function;
s42, the usrWdbReInit function returns.
Further, the step S5 specifically includes the following steps:
s51, executing a Build Project in the engineering option;
s52, compiling is completed, and a static library file is generated.
Further, the step S6 specifically includes the following steps:
s61, selecting a Library attribute page from application software engineering attributes;
s62, browsing and adding static library files;
s63, recompiling the application software engineering;
s64, after the application software is operated, the usrWdbReInit function is executed, and then the target server connection operation is carried out, so that the connection can be completed.
(III) beneficial effects
The invention provides a method for establishing a target server after an IP address is changed by an embedded VxWorks system, a static library engineering is established, and an incoming parameter function is defined; declaring a system start parameter structure and initializing the type of the network card; invoking a WDB initialization function and a WDB system suspension function; the compiling engineering generates a static library file and adds the static library file into the application engineering, so that the target server can be still connected under the condition that the application software changes the IP address of the network card. The invention improves the applicability of the VxWorks embedded operating system to be connected with the target server and debugged through the network, facilitates the development and debugging of application programs, and enhances the support of the hardware environment to the software development and debugging. By adopting the operation steps, the connection of the target server can be realized under the condition that the application software changes the IP address of the network card, and the technical method is proved to have strong technical feasibility, stability and reliability by practical verification, and can realize the functions that the VxWorks embedded operation system changes the IP address of the network card in application and the target server establishes connection.
Drawings
FIG. 1 is a flow chart of a method for establishing a target server after changing an IP address;
FIG. 2 is a flow chart for solving the problem of establishing a target server connection according to the present invention.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
The invention belongs to a technical method for solving the problem that a target server cannot be connected after a user changes a default IP address of a network card in a starting process under a VxWorks embedded operating system. The invention improves the applicability of the VxWorks embedded operating system to be connected with the target server and debugged through the network, facilitates the development and debugging of application programs, and enhances the support of the hardware environment to the software development and debugging.
In order to achieve the above object, the present invention adopts the following technical measures:
s1, creating a static library project in a VxWorks integrated development environment;
s2, defining a function in a static library engineering source program;
s3, declaring a structural variable of an 'afferent starting parameter' in the function, and assigning values to the variable;
s4, calling a WDB initialization function and a WDB system suspension function;
s5, compiling static library engineering to generate a static library file;
s6, adding the static library into the application software, and calling an entry function of the static library before executing the connection target server.
Through the steps, the problem that the application software changes the IP address of the network card and reconnects the target server can be solved.
The invention belongs to a method for reestablishing a target server connection after changing an IP address under an embedded VxWorks operating system. The method is characterized in that: firstly, establishing a static library engineering and defining an incoming parameter function; secondly, declaring a system starting parameter structure and initializing the type of the network card; thirdly, calling a WDB initialization function and a WDB system suspension function; fourth, the compiling engineering generates a static library file and adds the static library file into the application engineering, so that the target server can be still connected under the condition that the application software changes the IP address of the network card.
The invention relates to a method for establishing a target server after an embedded VxWorks system changes an IP address, wherein,
(1) Exist as a static library, not involving application functionality and architectural changes;
(2) Re-initializing WDB according to the network card type changed by the IP address;
(3) And after the IP address is changed, calling a function in the static library to complete the function.
Further, the invention is characterized in that: (1) Finding out the reason that the target server cannot be connected after changing the IP address; (2) Starting from the principle of the initialization process of the WDB in the starting process of the VxWorks operating system, a method for re-initializing the WDB under the running state of the operating system is developed; (3) The WDB is initialized again, and then target server reconnection can be realized; (4) After the application software changes the IP address, the initialization of establishing the target server environment can be completed by adding codes into the software, debugging the terminal or running functions in a static library under the telnet terminal.
1-2, in order to solve the problem that in a VxWorks embedded operating system, application software changes the IP address of a network card and a target server cannot be connected, static library engineering is established, after the application software starts to change the IP address of the network card, WDB initialization is performed again to solve the problem, and the invention is further described below.
1. In the VxWorks integrated development environment, a static library engineering is created
S11, creating a DKM engineering in a work space where a working path is located, and naming usrWdbReInit;
s12, selecting a processor and a compiling chain which are the same as those of the application program from the built specs option;
s13, selecting gnu as a Build Tool in a Build target option;
s14, finishing engineering creation.
2. In a static library engineering source program, a function is defined
S21, creating a source file c in a static library engineering source program, wherein the source file c is named as wdbUsrDef;
s22, defining a function in the file, wherein the function name usrWdbReInit, and the parameter is a variable char_addr of the character string type.
3. Declaring "incoming start parameter" structure variables in the function and assigning settings to the structure variables
S31, declaring a variable IMPORT BOOT_ PARAMS sysBootParams;
s32, assigning and setting the sysBootParams structure
strcpy(sysBootParams.ead,addr)；
strcpy(sysBootParams.bootDev,"gei")；
sysBootParams.unitNum＝0；
The "gei" is a network card type, and in practical application, corresponding names are written according to different network card types. Addr is the network card address. The serial number of the same type of network card is 0.
4. Invoking WDB initialization function and WDB system suspension function
S41, after the sysBootParams structure is set, the function sequentially executes a usrWdbInit () function and a wrSystemSuspend () function;
s42, the usrWdbReInit function returns.
5. Compiling static library engineering to generate static library files
S51, executing a Build Project in the engineering option;
s52, compiling is completed, and a usrWdbReInit.a static library file is generated.
6. Adding the static library into the application software, and calling an entry function of the static library before re-executing the connection target server after modifying the IP
S61, selecting a Library attribute page from application software engineering attributes;
s62, selecting Add..A. - > Add full qualified library file, and browsing and adding a usrWdbReInit.a file;
s63, recompiling the application software engineering;
s64, after the application software is operated, the usrWdbReInit function is executed, and then the target server connection operation is carried out, so that the connection can be completed.
By utilizing the technical scheme, the operation steps can still realize the connection of the target server under the condition that the application software changes the network card IP address, and the technical method is proved to have strong technical feasibility, is stable and reliable by practical verification, and can realize the functions that the VxWorks embedded operation system changes the network card IP address in application and the target server establishes connection.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.

Claims (3)

1. A method for establishing a target server after an embedded VxWorks system changes an IP address is realized, which is characterized by comprising the following steps:
step S1, creating a static library project in a VxWorks integrated development environment;
step S2, defining a function in a static library engineering source program;
s3, declaring a structural variable of an 'afferent starting parameter' in the function, and performing assignment setting on the structural variable;
s4, calling a WDB initialization function and a WDB system suspension function;
s5, compiling static library engineering to generate a static library file;
s6, adding the static library into the application software, and calling an entry function of the static library before executing the connection target server;
the step S3 specifically includes the following steps:
s31, declaring a BOOT_PARAMS type structural variable;
s32, performing assignment setting on the structural variable;
the assignment setting comprises assigning the network card address, the network card type and the network card serial number to the structural variable;
the step S4 specifically includes the following steps:
s41, after the configuration variable is set, the function sequentially executes a usrWdbInit () function and a wrSystemSuspend () function;
s42, returning a usrWdbReIni function;
the step S5 specifically includes the following steps:
s51, executing a Build Project in the engineering option;
s52, compiling is completed, and a static library file is generated;
the step S6 specifically includes the following steps:
s61, selecting a Library attribute page from application software engineering attributes;
s62, browsing and adding static library files;
s63, recompiling the application software engineering;
s64, after the application software is operated, the usrWdbReInit function is executed, and then the target server connection operation is carried out, so that the connection can be completed.
2. The method for establishing a target server after the embedded VxWorks system changes the IP address according to claim 1, wherein the step S1 specifically includes the following steps:
s11, creating a DKM engineering in a work space where a working path is located;
s12, selecting a processor and a compiling chain which are the same as those of the application program from the built specs option;
s13, selecting gnu as a Build Tool in a Build target option;
s14, finishing engineering creation.
3. The method for establishing a target server after the embedded VxWorks system changes the IP address according to claim 1, wherein the step S2 specifically includes the following steps:
s21, creating a source file c in a static library engineering source program;
s22, determining a function in the file, wherein the parameter is a variable char of the character string type.
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