CN111208987A - TTP bus configuration dynamic loading method and loading device based on VxWorks system - Google Patents
TTP bus configuration dynamic loading method and loading device based on VxWorks system Download PDFInfo
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- CN111208987A CN111208987A CN201911113441.1A CN201911113441A CN111208987A CN 111208987 A CN111208987 A CN 111208987A CN 201911113441 A CN201911113441 A CN 201911113441A CN 111208987 A CN111208987 A CN 111208987A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/30—Creation or generation of source code
- G06F8/31—Programming languages or programming paradigms
- G06F8/315—Object-oriented languages
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/61—Installation
- G06F8/63—Image based installation; Cloning; Build to order
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
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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
- G06F9/4401—Bootstrapping
- G06F9/4406—Loading of operating system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
Abstract
The invention researches a time planning configuration method of a TTP bus network in an aviation safety key communication system, designs a method capable of dynamically configuring the TTP bus communication network based on a VxWorks operating system, and can dynamically change the time network planning of the TTP bus through an Ethernet interface to realize the dynamic reconstruction of multiple nodes in the safety key communication system. The invention researches an embedded code generation technology based on a model, a communication schedule generation technology, a VxWorks system dynamic loading and TTP protocol data decoding technology, provides a series of TTP bus network planning, model simulation, code generation and code dynamic loading methods, and successfully applies the TTP bus to an airplane power distribution system, thereby greatly improving the safety and reliability of products.
Description
Technical Field
The invention relates to a dynamic loading control of time division multiple access network configuration, belonging to the field of embedded computer control.
Background
The method for realizing the dynamic loading of the TTP bus configuration comprises the steps of planning a TTP bus time network through a TTP-Plan development tool and a TTP-Build development tool, generating a corresponding MEDL table, integrating the MEDL table and product software, and downloading a software image file to a PowerPC controller through an Ethernet interface to operate. The conventional TTP bus time network planning method uses configuration interfaces of TTP-Plan and TTP-Build development tools to complete configuration through complex and tedious operations, the configuration process is long in time consumption and easy to make mistakes, and the generated MEDL table is in a non-software-loadable binary format, so that the software integration difficulty is high and the risk is high.
Disclosure of Invention
The invention aims to realize one-click generation of a loadable TTP bus network MEDL table, improve the efficiency and reliability of TTP bus configuration and improve the efficiency and reliability of integration of the MEDL table and product software; .
The technical scheme of the invention provides a TTP bus configuration dynamic loading method based on a VxWorks system, which comprises the following steps,
planning a TTP bus time network through a TTP-Plan development tool and a TTP-Build development tool, generating a corresponding MEDL table, integrating the MEDL table with product software, generating a first mirror image file of the software, and loading the first mirror image file to a PowerPC controller through an Ethernet interface for operation;
the product software is developed based on C language, and the product software calls the MEDL table and converts the MEDL table into TTP module codes which can be executed by the PowerPC controller.
Further, the method may further comprise,
designing a TTP bus time network by adopting the Python scripting language, and calling a TTP-Plan and a TTP-Build development tool to automatically generate an MEDL table through the Python scripting language; the Python scripting language is used for improving the generation efficiency of the MEDL table.
Further, the method further comprises the step that the software image file is an integration result of the MEDL table and the product software.
Further, the method also comprises the steps of changing the time network plan of the TTP bus in the MEDL table, integrating the modified MEDL table and product software to generate a second software image file, and realizing the dynamic reconstruction of multiple nodes in the communication system; and the second software image file is loaded to the PowerPC controller through the Ethernet interface to run.
Further, the method also comprises the steps of performing Boot setting by adopting C language based on a VxWorks system to design product software; the product software enables the transmission and reception of TTPs.
On the other hand, a TTP bus configuration dynamic loading device based on a VxWorks system is provided, the loading device comprises a TTP bus planning module, a TTP bus compiling module, an Ethernet communication module and a MEDL table conversion module,
the TTP bus planning module, the TTP bus compiling module and the MEDL table conversion module are sequentially in data connection, and the MEDL table conversion module is in data connection with the PowerPC controller through the Ethernet communication module;
the TTP bus planning module receives the TTP bus communication requirement, designs a TTP bus communication network according to the TTP bus communication requirement, and feeds back the TTP bus communication network to the TTP bus compiling module;
the TTP bus compiling module compiles the received TTP bus communication network into an MEDL table and feeds the MEDL table back to the MEDL table conversion module;
and the MEDL table conversion module converts the received MEDL table into TTP module codes which can be executed by the PowerPC controller, and the TTP module codes are sent to the PowerPC controller through the Ethernet communication module.
Further, the MEDL table conversion module is developed based on C language and is used for calling the MEDL table and converting the MEDL table into TTP module code which can be executed by the PowerPC controller.
Further, the PowerPC controller comprises an Ethernet receiving module, an Ethernet sending module, a data identification and processing module and a data storage module,
the Ethernet receiving module, the data identification and processing module, the data storage module and the Ethernet sending module are sequentially in data connection; the Ethernet receiving module and the Ethernet sending module are respectively in data connection with the Ethernet communication module of the loading device;
the Ethernet receiving module receives the TTP module code and feeds back the TTP module code to the data identification and processing module; the data identification and processing module is used for identifying the integrity of the TTP module code and verifying the correctness of the TTP module code, and feeding back the data identification and processing result of the TTP module code to the data storage module; the data storage module is used for storing the received data identification and processing result of the TTP module code and feeding back the data identification and processing result to the Ethernet sending module; the Ethernet sending module is used for feeding back the loading result of the TTP module code to the Ethernet communication module of the loading device.
The invention has the technical effects that:
the time network planning of the TTP bus can be dynamically changed through the Ethernet interface, the dynamic reconstruction of multiple nodes in a safety key communication system is realized, the methods of network planning, model simulation, code generation and code dynamic loading of the TTP bus are realized by using an embedded code generation technology based on a model, a communication schedule generation technology, VxWorks system dynamic loading and TTP protocol data decoding technology, the TTP bus is successfully applied to an airplane power distribution system, and the safety and reliability of products are greatly improved.
A TTP bus time network is planned through TTP-Plan and TTP-Build development tools, a C language source program file corresponding to an MEDL table is generated, the MEDL table and product software are integrated, a first software mirror image is generated, the first software mirror image is loaded to a PowerPC controller through an Ethernet interface to run, the workload of software integration is reduced, and meanwhile, the Ethernet interface is used for achieving online updating of the software mirror image.
A TTP bus time network is designed by adopting a Python script language, a TTP-Plan and a TTP-Build development tool are called by the Python script language to automatically generate the MEDL table, and the generation efficiency of the MEDL table is improved.
The software mirror image file is an integration result of the MEDL table and the product software, so that the software integration level is improved, and the system maintenance difficulty and cost are reduced.
The time network planning of a TTP bus in the MEDL table is changed, the modified MEDL table and product software are integrated to generate a second software image file, dynamic reconstruction of multiple nodes in a communication system is achieved, the second software image file is loaded to a PowerPC controller through an Ethernet interface to operate, software modification workload and time overhead brought by adding nodes in the TTP network are reduced, and meanwhile online updating of software images is achieved through the Ethernet.
Based on the VxWorks system, the C language is adopted to perform Boot setting so as to design product software, reduce the programming difficulty of TTP communication software, improve the product development efficiency and shorten the product development period.
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FIG. 1 is a TTP bus dynamic configuration method based on a VxWorks system.
Detailed Description
Example 1
The TTP bus configuration dynamic loading device based on the VxWorks system provided by this embodiment includes a TTP bus planning module, a TTP bus compiling module, an ethernet communication module, and an MEDL table conversion module; the TTP bus planning module, the TTP bus compiling module and the MEDL table conversion module are sequentially in data connection, and the MEDL table conversion module is in data connection with the PowerPC controller through the Ethernet communication module; the TTP bus planning module receives the TTP bus communication requirement, designs a TTP bus communication network according to the TTP bus communication requirement, and feeds back the TTP bus communication network to the TTP bus compiling module; the TTP bus compiling module compiles the received TTP bus communication network into an MEDL table and feeds the MEDL table back to the MEDL table conversion module; and the MEDL table conversion module converts the received MEDL table into TTP module codes which can be executed by the PowerPC controller, and the TTP module codes are sent to the PowerPC controller through the Ethernet communication module.
And the MEDL table conversion module is developed based on the C language and is used for calling the MEDL table and converting the MEDL table into TTP module codes which can be executed by the PowerPC controller.
The PowerPC controller comprises an Ethernet receiving module, an Ethernet sending module, a data identification and processing module and a data storage module; the Ethernet receiving module, the data identification and processing module, the data storage module and the Ethernet sending module are in data connection in sequence; the Ethernet receiving module and the Ethernet sending module are respectively in data connection with the Ethernet communication module of the loading device; the Ethernet receiving module receives the TTP module code and feeds back the TTP module code to the data identification and processing module; the data identification and processing module is used for identifying the integrity of the TTP module code and verifying the correctness of the TTP module code, and feeding back the data identification and processing result of the TTP module code to the data storage module; the data storage module is used for storing the data identification and processing result of the received TTP module code and feeding back the data identification and processing result to the Ethernet sending module; the Ethernet sending module is used for feeding back the loading result of the TTP module code to the Ethernet communication module of the loading device.
The product software and the MEDL table for planning TTP bus network time are both realized by using C language, Boot setting is carried out based on a VxWorks operating system, the sending and receiving of TTP can be realized, a SecureCRT software tool can be used for carrying out software debugging and verifying TTP communication.
Example 2
The TTP bus dynamic configuration method is shown in FIG. 1, and FIG. 1 is a TTP bus dynamic configuration method based on a VxWorks system. The following describes the embodiment in detail with reference to fig. 1.
Step 1, according to system requirements and the number of TTP communication nodes, a Python language integrated development debugging tool is used for compiling a configuration script of a communication system time scheduling table MEDL and debugging the configuration script to pass, so that communication network planning is realized.
Step 2, using the TTP-Plan tool to load and execute Python script, generating a TTP component database, and orienting a TTP node communication network through the TTP-Plan tool.
Step 3, according to the characteristics of the TTP component database and the HW-COM node of the TTP network, a Python language integrated development debugging tool is used for writing a Python configuration script of the TTP component database and debugging the Python configuration script to pass.
Step 4, using a TTP-Build development tool, loading and executing a Python script, compiling a TTP component database, and generating a MEDL table in a C language source program file form which can be loaded by software after debugging.
Step 5, integrating the generated MEDL table with BPCU/SPDU/P100-ELCU/P300-ELCU product software by using a VxWorks system integration development tool WindRiver WorkBench, and compiling to pass to generate a corresponding software image file.
Step 6, downloading the software image file to the PowerPC controller to run by using an FTP software loading tool based on a network.
Step 7, using a SecureCRT software tool to debug the software and verify TTP communication.
And if the network time plan of the TTP bus needs to be changed, executing the steps according to the changed system requirements and the number of the TTP communication nodes, generating a second software image file, and loading the second software image file to the PowerPC controller through the Ethernet interface for operation.
Compared with the traditional method, the method designed by the invention has the advantages of simple operation, cost saving and high reliability, can dynamically change the time network planning of the TTP bus through the Ethernet interface, realizes the dynamic reconfiguration of multiple nodes in a safety key communication system, and can effectively improve the flexibility and maintainability of TTP bus network configuration.
The present invention is not limited to the above embodiments, and other methods applied to the dynamic loading method of the TTP configuration, which are obtained by adopting the same or similar scheme as the above embodiments of the present invention, are within the scope of the present invention.
Claims (8)
1. A TTP bus configuration dynamic loading method based on VxWorks system is characterized in that the method comprises the following steps,
planning a TTP bus time network through a TTP-Plan development tool and a TTP-Build development tool, generating a corresponding MEDL table, integrating the MEDL table with product software, generating a first mirror image file of the software, and loading the first mirror image file to a PowerPC controller through an Ethernet interface for operation;
the product software is developed based on C language, and the product software calls the MEDL table and converts the MEDL table into TTP module codes which can be executed by the PowerPC controller.
2. The VxWorks system-based TTP bus configuration dynamic loading method of claim 1, further comprising,
a TTP bus time network is designed by adopting a Python script language, and a TTP-Plan and TTP-Build development tool is called by the Python script language to automatically generate an MEDL table; the Python scripting language is used for improving the generation efficiency of the MEDL table.
3. The VxWorks system-based TTP bus configuration dynamic loading method according to claim 2, wherein the software image file is an integration result of a MEDL table and the product software.
4. The TTP bus configuration dynamic loading method based on the VxWorks system according to claim 3, further comprising changing a time network plan of the TTP bus in the MEDL table, integrating the modified MEDL table with product software to generate a second software image file, and realizing dynamic reconfiguration of multiple nodes in a communication system; and the second software image file is loaded to the PowerPC controller through the Ethernet interface to run.
5. The TTP bus configuration dynamic loading method based on the VxWorks system according to claim 1, further comprising performing Boot setting by adopting C language based on the VxWorks system to design product software; the product software enables the transmission and reception of TTPs.
6. A TTP bus configuration dynamic loading device based on VxWorks system is characterized in that the loading device comprises a TTP bus planning module, a TTP bus compiling module, an Ethernet communication module and an MEDL table conversion module,
the TTP bus planning module, the TTP bus compiling module and the MEDL table conversion module are sequentially in data connection, and the MEDL table conversion module is in data connection with the PowerPC controller through the Ethernet communication module;
the TTP bus planning module receives the TTP bus communication requirement, designs a TTP bus communication network according to the TTP bus communication requirement, and feeds back the TTP bus communication network to the TTP bus compiling module;
the TTP bus compiling module compiles the received TTP bus communication network into an MEDL table and feeds the MEDL table back to the MEDL table conversion module;
and the MEDL table conversion module converts the received MEDL table into TTP module codes which can be executed by the PowerPC controller, and the TTP module codes are sent to the PowerPC controller through the Ethernet communication module.
7. The VxWorks system-based TTP bus configuration dynamic loading device according to claim 6, wherein the MEDL table conversion module is developed based on C language and is used for calling MEDL table and converting the MEDL table into TTP module code executable by a PowerPC controller.
8. The VxWorks system-based TTP bus configuration dynamic loading device according to claim 6, wherein the PowerPC controller comprises an Ethernet receiving module, an Ethernet sending module, a data recognizing and processing module and a data storing module,
the Ethernet receiving module, the data identification and processing module, the data storage module and the Ethernet sending module are sequentially in data connection; the Ethernet receiving module and the Ethernet sending module are respectively in data connection with the Ethernet communication module of the loading device;
the Ethernet receiving module receives the TTP module code and feeds back the TTP module code to the data identification and processing module; the data identification and processing module is used for identifying the integrity of the TTP module code and verifying the correctness of the TTP module code, and feeding back the data identification and processing result of the TTP module code to the data storage module; the data storage module is used for storing the received data identification and processing result of the TTP module code and feeding back the data identification and processing result to the Ethernet sending module; the Ethernet sending module is used for feeding back the loading result of the TTP module code to the Ethernet communication module of the loading device.
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