CN111694576A - Software deployment control method for integrated avionics system - Google Patents
Software deployment control method for integrated avionics system Download PDFInfo
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- CN111694576A CN111694576A CN202010443339.4A CN202010443339A CN111694576A CN 111694576 A CN111694576 A CN 111694576A CN 202010443339 A CN202010443339 A CN 202010443339A CN 111694576 A CN111694576 A CN 111694576A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
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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
- G06F9/4451—User profiles; Roaming
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a software deployment control method for a comprehensive avionics system. The method can effectively avoid various software and hardware combination problems and repeated deployment of the same file which are possibly caused when software loading deployment is carried out in a laboratory or an external field at present, and improves the maintainability and the reliability of the comprehensive modular avionics system. The method mainly comprises the following steps: 1. counting all files needed by a target machine, and creating a deployment configuration table in the target machine; 2. embedding a CRC value and a file identification code into each preloaded item file; 3. loading and storing of preloaded item files; 4. and finishing the deployment of the preloaded item file according to the deployment configuration table.
Description
Technical Field
The invention relates to the technical field of airborne embedded software, in particular to a software deployment control method for a comprehensive avionics system.
Background
The comprehensive modular avionics system is rapidly developing towards the direction of structural integration, hardware sharing, functional software and information networking, the volume, power consumption and weight of equipment are continuously reduced, a plurality of functions realized by hardware are realized by software in the past, and the status and the function of airborne software are greatly improved. The software and hardware composition of the integrated modular avionics system is more and more complex, the quantity of software and configuration files to be loaded is large, the quantity of software configuration items to be loaded on a single module of some projects can be more than 10, and the quantity of software configuration items to be loaded on a whole aircraft is hundreds.
In the traditional loading method, no matter the preloading item is manually selected and the Flash solidification address is input, or the preloading item file name and the Flash loading address are pre-configured on the basis of the configuration table, the preloading item file and the Flash solidification address are not effectively verified, so that a series of problems such as loading item type error, version error and Flash solidification address error are easy to occur, other programs residing on hardware are damaged, or a series of problems such as compatibility and the like caused by software configuration item version error are caused, and further the aircraft development and test progress is influenced.
Disclosure of Invention
Aiming at the problems that the type, version and Flash solidification address of a preloaded item file are not effectively checked in the existing software loading method, other programs resident on hardware are easily damaged or system functions or performances are lost, and the like, the comprehensive modular avionics system software deployment control method based on the file identification code and the CRC value is provided.
The specific technical scheme of the invention is as follows:
the invention provides a software deployment control method of a comprehensive avionics system, which comprises the following steps:
step 1: counting all files needed by a target machine, and creating a deployment configuration table in the target machine;
wherein, all files comprise all software and configuration files which need to be loaded and solidified by the target machine;
the deployment configuration table comprises a file name, a file identification code, a CRC (cyclic redundancy check) value, a Flash deployment address and a deployment state corresponding to each file;
the file identification code comprises a supplier identification, a complete machine identification, a module identification, a file type, a serial number and a version number;
step 2: calculating the CRC value of each preloaded item file, allocating a file identification code to each preloaded item file, embedding the CRC value and the file identification code at the beginning of each preloaded item file, and occupying the word number with fixed length;
and step 3: loading and storing of preloaded item files;
loading the plurality of preloaded item files processed in the step 2 into the target machine and storing the preloaded item files into a file system of the target machine;
and 4, step 4: completing the deployment of a plurality of preloaded item files according to a deployment configuration table;
step 4.1: starting from a first file in the deployment configuration table, searching a corresponding preloading item file in a file system through a file name;
step 4.2: after a preloading item file with the same name as the first file in the deployment configuration table is searched, a file identification code and a CRC value are analyzed from the corresponding position of the preloading item file;
step 4.3: comparing the analyzed file identification code with a file identification code of a deployment configuration table; if the CRC values are consistent, recalculating the CRC values of the preloaded item files according to the same algorithm, and comparing the recalculated CRC values with the CRC values in the deployment configuration table; if the files are the same, inquiring the deployment state of the first file in a deployment configuration table; if the state is undeployed, deploying according to the Flash address in the deployment configuration table; otherwise, not deploying;
step 4.4: and repeating the step 4.1 to the step 4.3 until the deployment states corresponding to all the files in the deployment configuration table are deployed, and ending.
Further, the specific format of the file identification code is as follows: AAA-BBB-CCC-DDD-EEE;
AAA is supplier mark composed of capital letter and number;
BBB is the complete machine identification, composed of capital letters and numbers, if it is a single module, the value is assigned as 000;
CCC is a module mark and consists of capital letters and numbers;
DDD is the file type and the serial number of the preloading item, and consists of numbers, wherein the 1 st digit represents the type of the preloading item, and the 2 nd digit and the 3 rd digit represent the serial number;
when the 1 st digit is 1, the preloaded item file type is platform software, when the 1 st digit is 2, the preloaded item file type is application software, when the 1 st digit is 3, the preloaded item file type is a configuration file, and when the 1 st digit is 4, the preloaded item file type is a database;
EEE is the preloaded item version number, consisting of 3 digits.
Further, the step 3 is to load the preloaded item file into the target machine individually or in batch by using the serial port/ethernet/ARINC 664 network/1553B network.
Further, the format of the deployment configuration table is XML or TXT.
The invention has the advantages and effects that:
according to the invention, the file identification code and the CRC value are embedded in the preloaded file, and the preloaded file is ensured to be a file and a version required by the current hardware deployment by comparing the file identification code of the preloaded file with the file identification code in the deployment configuration table, and the data integrity of the preloaded file in the transmission and storage processes is ensured by comparing the CRC value of the preloaded file with the CRC value in the deployment configuration table; in addition, the deployed same file is identified by the file deployment state identifier in the deployment configuration table, so that repeated deployment is avoided, and time is saved.
Drawings
FIG. 1 is a flowchart of a particular deployment control process of an embodiment;
FIG. 2 is a flow chart of generating a file identification code;
fig. 3 is a flowchart of file deployment in the target machine.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1, the embodiment provides a specific implementation process of a software deployment control method of a comprehensive avionics system:
1. assigning a file identification code to each preloaded item file
Each preloaded item file is assigned a file identification code either by a software program or manually. The file identification code generation flow is shown in fig. 2.
The format of the file identification code is as follows: AAA-BBB-CCC-DDD-EEE.
AAA is supplier mark composed of capital letter and number;
BBB is the complete machine identification, composed of capital letters and numbers, if it is a single module, the value is assigned as 000;
CCC is a module mark and consists of capital letters and numbers;
DDD is the file type and serial number of the preloading item, and is composed of numbers, wherein, the 1 st digit represents the preloading item type, and the last two digits are serial numbers, such as 01 and 02, which represent the files of the type;
when the 1 st digit is 1, the preloaded item file type is platform software, when the 1 st digit is 2, the preloaded item file type is application software, when the 1 st digit is 3, the preloaded item file type is a configuration file, and when the 1 st digit is 4, the preloaded item file type is a database;
EEE is the preloaded item version number, consisting of 3 digits.
For example: 666-ACP-CPM-108-212, which is the 8 th preloaded file of platform software for ACP complete machine CPM module developed by the supplier with the code number 666, the version number is 2.1.2.
2. Calculating a CRC value of each preloaded item file;
the CRC value of each preloaded item file is calculated because the preloaded files can be files from several K to several tens M, collectively using the CRC32 calculation method. For example, the file identifier is 666-ACP-CPM-108 and 212, and the calculated CRC32 value is 673EACD 1.
3. Embedding the file identification code and the CRC value into the file;
embedding the file identification code and the CRC value into the initial position of the preloaded file, and occupying the byte number with fixed length;
4. creating a deployment configuration table and loading and deploying the deployment configuration table to a target machine;
and counting all software and configuration files which need to be loaded and solidified by the whole machine or module hardware, and finishing the establishment of the deployment configuration table. The content of the deployment configuration table comprises a file name, a file identification code, a CRC value, a Flash deployment address and a deployment state. The deployment configuration table is shown in table 1.
Table 1 deployment configuration table
The deployment configuration table may be a file in XML, TXT, etc. format. The deployment configuration table belongs to a special file and is pre-deployed on the target machine hardware Flash in other loading modes. If some software or configuration file is changed, the deployment configuration table is updated.
5. Loading and storing of preloaded item files;
loading the preloaded item files to the target machine singly or in batch by adopting a loading tool through ways of serial port/Ethernet/ARINC 664 network/1553B network and the like, and storing the preloaded item files into a file system after data file integrity check;
6. completing the deployment of the preloaded item file according to a deployment configuration table;
the file deployment is to burn the file to a Flash specified address. As shown in fig. 3, first, according to the deployment configuration table, starting from the first file in the table, searching for the corresponding file in the file system by the file name; after files with the same name are searched, analyzing a file identification code and a CRC value from corresponding positions of the files; comparing the analyzed file identification code with a file identification code of a deployment configuration table; if the CRC values are consistent, recalculating the CRC value of the file according to the same algorithm, and comparing the recalculated CRC value with the CRC value in the deployment configuration table; if the file is the same as the deployment configuration table, inquiring the deployment state of the file in the deployment configuration table; if the state is undeployed, deploying according to the Flash address in the deployment configuration table; otherwise, deployment is not performed.
Claims (4)
1. A software deployment control method for a comprehensive avionics system is characterized by comprising the following steps:
step 1: counting all files needed by a target machine, and creating a deployment configuration table in the target machine;
wherein, all files comprise all software and configuration files which need to be loaded and solidified by the target machine;
the deployment configuration table comprises a file name, a file identification code, a CRC (cyclic redundancy check) value, a Flash deployment address and a deployment state corresponding to each file;
the file identification code comprises a supplier identification, a complete machine identification, a module identification, a file type, a serial number and a version number;
step 2: calculating the CRC value of each preloaded item file, allocating a file identification code to each preloaded item file, embedding the CRC value and the file identification code at the beginning of each preloaded item file, and occupying the word number with fixed length;
and step 3: loading and storing of preloaded item files;
loading the plurality of preloaded item files processed in the step 2 into the target machine and storing the preloaded item files into a file system of the target machine;
and 4, step 4: completing the deployment of the preloaded item file according to a deployment configuration table;
step 4.1: starting from a first file in the deployment configuration table, searching a corresponding preloading item file in a file system through a file name;
step 4.2: after a preloading item file with the same name as the first file in the deployment configuration table is searched, a file identification code and a CRC value are analyzed from the corresponding position of the preloading item file;
step 4.3: comparing the analyzed file identification code with a file identification code of a deployment configuration table; if the CRC values are consistent, recalculating the CRC values of the preloaded item files according to the same algorithm, and comparing the recalculated CRC values with the CRC values in the deployment configuration table; if the files are the same, inquiring the deployment state of the first file in a deployment configuration table; if the state is undeployed, deploying according to the Flash address in the deployment configuration table; otherwise, not deploying;
step 4.4: and repeating the step 4.1 to the step 4.3 until the deployment states corresponding to all the files in the deployment configuration table are deployed, and ending.
2. The integrated avionics system software deployment control method according to claim 1, characterized in that: the specific format of the file identification code is as follows: AAA-BBB-CCC-DDD-EEE;
AAA is supplier mark composed of capital letter and number;
BBB is the complete machine identification, composed of capital letters and numbers, if it is a single module, the value is assigned as 000;
CCC is a module mark and consists of capital letters and numbers;
DDD is the file type and the serial number of the preloading item, and consists of numbers, wherein the 1 st digit represents the type of the preloading item, and the 2 nd digit and the 3 rd digit represent the serial number;
when the 1 st digit is 1, the preloaded item file type is platform software, when the 1 st digit is 2, the preloaded item file type is application software, when the 1 st digit is 3, the preloaded item file type is a configuration file, and when the 1 st digit is 4, the preloaded item file type is a database;
EEE is the preloaded item version number, consisting of 3 digits.
3. The integrated avionics system software deployment control method according to claim 2, characterized in that: the step 3 is specifically to load the preloaded item files into the target machine singly or in batch by adopting a serial port/Ethernet/ARINC 664 network/1553B network.
4. A method for controlling software deployment in an integrated avionics system according to any one of claims 1 to 3, characterized by: the deployment configuration table is in the format of XML or TXT.
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