CN107329920A - A kind of common interface frame design method of reflective memory - Google Patents
A kind of common interface frame design method of reflective memory Download PDFInfo
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- CN107329920A CN107329920A CN201710546360.5A CN201710546360A CN107329920A CN 107329920 A CN107329920 A CN 107329920A CN 201710546360 A CN201710546360 A CN 201710546360A CN 107329920 A CN107329920 A CN 107329920A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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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
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/54—Indexing scheme relating to G06F9/54
- G06F2209/548—Queue
Abstract
Design method is set the invention discloses a kind of common interface framework of reflective memory, is related to avionics system technical field.The common interface frame design method of the reflective memory is comprised the steps of：Step one, in definition frame data transfer form；Step 2, the message format of definition is decided with the form of configuration file, and specific configuration file format is as follows, definition node, and the node includes mark, title, the quantity containing data block, the transmission means of node；Data block is defined, the data block includes numbering, title, size, depth, transmission means and attribute；Step 3, will set up all data used in framework and is defined as tables of data according to the form of configuration file, the tables of data is delivered to all nodes in platform, form Distributed Architecture.The advantage of the invention is that：It is simple in construction, be easy to configuration, can quickly realize the structure of the distributed system based on reflective memory, greatly improve distributed system structure and debugging application.
Description
Technical field
The present invention relates to avionics system technical field, and in particular to a kind of common interface Frame Design side of reflective memory
Method.
Background technology
The requirement tested from single device to mutli-system integration, complex interfaces and rule will be covered by testing checking system due to avionics
Mould is larger, while requiring possess a large amount of functional units such as configuration operation management, monitoring, analysis, storage, system architecture is more multiple
Miscellaneous, the distributed avionics system verification platform construction period is long, and integrated difficulty is high.
The content of the invention
It is an object of the invention to provide a kind of public structural framing design method of reflective memory, in background technology
A kind of simple complication system, it is desirable to provide, easily use environment, can easily manipulate all system resources, complete test
Task, with solve or at least mitigate background technology in the presence of at least one at the problem of.
According to the demand, CIA (Common Interfacce Architecture) common interface framework is designed.CIA
It is the core that avionics tests checking system, all component is all built upon on the basis of CIA, the process data between all component is led to
CIA is crossed to swap.By CIA, the decoupling of all functional parts is realized, the complexity communicated between part is simplified, and make
The system of obtaining is easy to extension.
In each computer node, CIA is presented as one group of background task, carries out data transmission management.To each application,
CIA is presented as one group of application interface, for application call, realizes data access.
CIA (Common Interface Architecture) defines a set of global data access and control management association
View, supports to carry out data interoperation and Collaborative Control between multi-processor node, multiple application programs.Its key features is as follows：
Support the global data access of distributed multinode；
The operation control interface of multi-node system is provided；
Each node can access CIA networks by two kinds of forms of Ethernet and reflective memory；
By configuration file, the distribution subscription data relationship of each CIA nodes is defined；
CIA data object attributes and SID database associations, single source are globally consistent；
Possesses the mechanism for ensuring data integrity；
Possesses the mechanism for ensuring data continuity；
Support sampling and queue both of which.
To achieve these goals, the technical solution adopted by the present invention is：A kind of common interface framework of reflective memory is set
Meter method, the common interface framework is used for aircraft avionics system verification platform, and the common interface framework of the reflective memory is set
Meter method is comprised the steps of：
Step one, in definition frame data transfer form, specially message numbering+data segment+verification and+message name
+ timestamp；
Step 2, the message format of definition is decided with the form of configuration file, and specific configuration file format is such as
Under, definition node, the node includes mark, title, the quantity containing data block, the transmission means of node；Define data block, institute
State data block and include numbering, title, size, depth, transmission means and attribute；
Step 3, will set up all data used in framework and is defined as tables of data according to the form of configuration file, by institute
All nodes that tables of data is delivered in platform are stated, Distributed Architecture is formed.
It is preferred that, in the step one, each data set the numbering between independent numbering, multiple data to progressively increase,
And the numbering sets corresponding relation, i.e. read and write position to be the mould that numbering takes FIFO depth with data fifo.
It is preferred that, each FIFO adds an address, and record is write using the numbering and check value for being newly written data.
It is preferred that, further comprising definition CIA transport layer constant tables, the CIA transport layers constant table in the step 2
Title, numerical value, remarks implication and scope comprising constant.
It is preferred that, the CIA transport layers have 5 interfaces, are respectively used to initialization CIA transport layers, obtain Block
Handle, reading Block data, write-in Block data and closing CIA transport layers.
It is preferred that, each packet contains following part：4 byte datas numbering, 4 byte numbers verification and, 8 byte time stamps, X
The data of length, the data check of 4 bytes and.
The beneficial effects of the present invention are：
The common interface frame design method of reflective memory proposed by the present invention is simple in construction, be easy to configuration, can be quick
The structure of the distributed system based on reflective memory is realized, structure and the debugging application of distributed system is greatly improved；Effectively
Solve distributed avionics system verification platform construction period length, integrated difficulty some row problems.
Brief description of the drawings
Fig. 1 is the flow chart of the common interface frame design method of the reflective memory of one embodiment of the invention.
Fig. 2 is the use flow chart of CIA transport layer interfaces.
Fig. 3 is the structural representation of the reflective memory common interface frame design method of the present invention.
Fig. 4 is CIA functional unit interconnection schematic diagram.
Embodiment
To make the purpose, technical scheme and advantage of the invention implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Embodiments of the invention are described in detail with reference to accompanying drawing for face.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, is for only for ease of the description present invention and simplifies description, rather than indicate or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to present invention protection
The limitation of scope.
As shown in figure 1, a kind of common interface frame design method of reflective memory, the common interface framework is used for aircraft
Avionics system verification platform, the common interface frame design method of the reflective memory is comprised the steps of：
Step one, in definition frame data transfer form, specially message numbering+data segment+verification and+message name
+ timestamp.
It is using the advantage of message numbering, message numbering is unique sign of message, for distinguishing message, all message
Serial number.
Verify and the data for ensuring data segment are valid data, data segment step-by-step is counted, counting is stored in school
Test with it is inner, user according to verification and the data of the data segment of reception are verified.For example, in one embodiment, certain data
Section has 64, wherein be 34 for 1 digit, then verification and as 34.Verified in data trailer addition and data can be ensured
Integrality.
Message name is one section of character string, be the advantage is that：Recipient can clearly know the implication of the data；It can manage
Solution, the character string that the message name is used can be set according to practical use, for example, in the present embodiment, message
The character string that title is used is set according to the physical meaning of message, facilitates recipient to know the implication of the data；Another standby
Select in embodiment, in order to ensure the confidentiality of data, the character string that message name is used connects for the code without practical significance
Debit the advantage is that according to the implication of the codelookup information, be conducive to improving the confidentiality of message.
Timestamp, the specific time for identifying message write-in, is accurate to Millisecond, the advantage is that：To all message
It is ranked up with the time.
In the present embodiment, each data set the numbering between independent numbering, multiple data to progressively increase, and the numbering
Corresponding relation, i.e. read and write position is set to be the mould that numbering takes FIFO depth with data fifo.Each FIFO adds an address, note
Record is write using the numbering and check value for being newly written data.FIFO operations are the operations to circular buffering queue, another to delay for circulation
Rush queue and open up a position, the data that data storage is newly written and verification and.
Step 2, the message format of definition is decided with the form of configuration file, and specific configuration file format is such as
Under, definition node, the node includes mark, title, the quantity containing data block, the transmission means of node；It the advantage is that, can
With how many node in clear and definite system, the species of node facilitates the management on levels of data；Can clearly it be counted by definition node
, can be with differentiated control data according to the system belonging to block, node is one-level, and data block is one-level.
In the present embodiment, the numeral that is denoted as of the node is numbered, and uniquely determines the source of a piece of news.Node
Title be character string.Transmission medium 0 represents DDS, and 1 represents RFM.
Data block is defined, the data block includes numbering, title, size, depth, transmission means and attribute；The data
The size of block refers to how many data are included in data block；The depth of the data block refers to the group number of data block, and numerical value is bigger to be protected
The data deposited are more, if write-in block, receive slow, data will not be caused to be capped, and it is to be used for data buffering that it, which is acted on, prevents number
According to capped.Transmission medium is reflective memory, defines skews of the FIFO in reflective memory；Attribute is read-write properties, and 0 represents only
Read, 1 representative is only write, 2 represent read-write.
Further comprising CIA transport layer constant tables are defined in the step 2, the CIA transport layers constant table includes constant
Title, numerical value, remarks implication and scope.For example, in the present embodiment, definition has multiple constants, the entitled CIA_ of constant
INVALID_PAR, numerical value is -5, remarks parameter error, scope PVT_CIA_ReadBlock；The entitled CIA_NO_ of constant
VALID_DATA, numerical value is -4, and remarks do not have data available, scope PVT_CIA_ReadBlock；The entitled CIA_NO_ of constant
DATA, numerical value is -3, and remarks do not have new data, scope PVT_CIA_ReadBlock；The entitled CIA_FIFO_ of constant
OVERFLOW, numerical value is -2, and remarks data send faster than receiving, and cover the data not received, scope PVT_CIA_
ReadBlock；The entitled CIA_ERROR of constant, numerical value is -1, remarks mistake, scope total interface；The entitled CIA_ of constant
OK, numerical value is 0, and remarks are normal, scope total interface；The entitled TRUE of constant, numerical value is 1, and remarks are true, and scope is all to be connect
Mouthful；The entitled FALSE of constant, numerical value is 0, and remarks are false, scope total interface；The entitled RECV_ALL of constant, numerical value is 0,
Remarks receive all data, scope PVT_CIA_ReadBlock；The entitled SAMPLE of constant, numerical value is 1, and remarks, which are received, to be used
Rate data, scope PVT_CIA_ReadBlock.
In the present embodiment, the CIA transport layers have 5 interfaces, are respectively used to initialization CIA transport layers, obtain
Block handles, reading Block data, write-in Block data and closing CIA transport layers.
Wherein：
The function prototype of CIA transport layers initialization is CIA_STATUS PVT_CIA_Init (char*strConfPath)；
Function is initialization CIA transport layers, reads configuration file, and corresponding transmission medium is initialized according to configuration file corresponding configuration；
Input, strConfPath:The path of configuration file；Output, CIA_OK：Transport layer is initialized successfully,<0：Transport layer is initialized
Failure；
The function prototype for obtaining Block handles is CIA_HANDLE PVT_CIA_GetBlock (char*
strBlockName)；Function specifies name strBlockName handle to obtain；Input, char*strBlockName：
Block name；Output,>=0：Acquire Block handle, CIA_ERROR：Obtain Block handle operation failures；It is standby
The Block of the name must be included in note, configuration file, failure is otherwise returned；
The function prototype for reading Block data is CIA_STATUS PVT_CIA_ReadBlock (CIA_HANDLE
hHandle,void*pBuf,ulong uCount,ulong*uGotNum)；Function is the Block FIFO pointed to from hHandle
The buffering area that uCount data are pointed to pBuf is read, and the actual uGotNum data amount checks read are returned；Input,
hHandle:The Block of operation handle, pBuf：The first address deposited after digital independent, it is necessary to assure data are read in storage
Buffering area is sufficiently large, uCount：The data amount check read is wanted, no more than Block FIFO length, it is possible to specify RECV_
ALL or SAMPLE；Output, uGotNum：It is actual to read moral data amount check, CIA_OK:Obtain data normal, CIA_FIFO_
OVERFLOW:Write than reading block, there is data spilling, CIA_NO_DATA:There is no data, CIA_NO_VALID_DATA:Without effective
Data, CIA_ERROR:Obtain data exception, CIA_INVALID_PAR:Input parameter is abnormal；Remarks, it is necessary to assure data
Buffering area is sufficiently large, is matched with the Block of this in configuration size；
The function prototype for writing Block data is CIA_STATUS PVT_CIA_WriteBlock (CIA_HANDLE
hHandle,void*pBuf)；Function is that on the data publication in Buf to CIA, will once write a data；Input, CIA_OK：
Write successfully, CIA_ERROR：Write-in failure；Remarks, the data length of write-once must not exceed the block of this in configuration file
Size.
Your function prototype for closing CIA transport layers is CIA_STATUS PVT_CIA_Close (void)；Function is closing
Transport layer, discharges resource；Remarks, common application should not call this function in midway, if midway is called, restart, data will not
It can normally receive.
As shown in Figure 2, the use flow chart of CIA transport layer interfaces, is initialized, then to CIA transport layers first
Handle is obtained, data is then write and reads data, finally close CIA.
In the present embodiment, each packet contains following part：4 byte datas numbering, 4 byte numbers verification and, 8 bytes
Time stamp, the data of X length, the data check of 4 bytes and.
Step 3, will set up all data used in framework and is defined as tables of data according to the form of configuration file, by institute
All nodes that tables of data is delivered in platform are stated, Distributed Architecture is formed.
As shown in figure 3, the structural representation based on reflective memory common interface frame design method, wherein, message numbering
For Seq, 4 bytes；Data are DATA, X；Verification and for Check, 4 bytes；Character string is Data；A time stamp high position is StampH, 4
Byte；Time stamp low level is StampL, 4 bytes.
As shown in figure 4, interconnect schematic diagram based on CI A De functional units, automatic test, bus analysis, data visualization,
Acquisition interface control node, emulation interface control node, model emulation node, CIA configuration files, configuration operation management and CIA
Global data space can be related.
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
The present invention is described in detail with reference to the foregoing embodiments for pipe, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from the essence of various embodiments of the present invention technical scheme
God and scope.
Claims (6)
1. a kind of common interface frame design method of reflective memory, the common interface framework is verified for aircraft avionics system
Platform, it is characterised in that the common interface frame design method of the reflective memory is comprised the steps of：
Step one, in definition frame data transfer form, specially message numbering+data segment+verification and+message name+when
Between stab；
Step 2, the message format of definition is decided with the form of configuration file, and specific configuration file format is as follows, fixed
Adopted node, the node includes mark, title, the quantity containing data block, the transmission means of node；Define data block, the number
Numbering, title, size, depth, transmission means and attribute are included according to block；
Step 3, will set up all data used in framework and is defined as tables of data according to the form of configuration file, by the number
All nodes in platform are delivered to according to table, Distributed Architecture is formed.
2. the common interface frame design method of reflective memory as claimed in claim 1, it is characterised in that in the step one
In, each data set the numbering between independent numbering, multiple data to progressively increase, and the numbering and the setting pair of F I FO data
It should be related to, i.e., read and write position takes the mould of F I FO depth for numbering.
3. the common interface frame design method of reflective memory as claimed in claim 2, it is characterised in that each F I FO are attached
Plus an address, record the numbering and check value write using data are newly written.
4. the common interface frame design method of reflective memory as claimed in claim 3, it is characterised in that in the step 2
Further comprising CIA transport layer constant tables are defined, the CIA transport layers constant table includes title, numerical value, the remarks implication of constant
And scope.
5. the common interface frame design method of reflective memory as claimed in claim 4, it is characterised in that the CIA transmission
Layer has 5 interfaces, is respectively used to initialization CIA transport layers, obtains B l ock handles, reads B l ock data, write-in B l
Ock data and closing CIA transport layers.
6. the common interface frame design method of reflective memory as claimed in claim 5, it is characterised in that each packet contains
Following part：4 byte datas numbering, 4 byte numbers verification and, 8 byte time stamps, the data of X length, the data check of 4 bytes
With.
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