CN102739806A - VXI-11 network automatic discovery method for LXI instrument on basis of DSP (Digital Signal Processor)/BIOS (Basic Input Output System) operation system - Google Patents
VXI-11 network automatic discovery method for LXI instrument on basis of DSP (Digital Signal Processor)/BIOS (Basic Input Output System) operation system Download PDFInfo
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Abstract
The invention discloses a VXI-11 network automatic discovery method for an LXI instrument on the basis of a DSP (Digital Signal Processor)/BIOS (Basic Input Output System) operation system. The invention relates to the VXI-11 network automatic discovery method for the LXI instrument on the basis of the DSP/BIOS operation system. The invention solves the problems of complexity of developing a drive program, difficulty in hardware operation and low data transmission rate of the existing Linux operation system. According to the VXI-11 network automatic discovery method for the LXI instrument on the basis of the DSP/BIOS operation system, an LXI instrument server end starts a port mapping program server thread to obtain a server thread port number and circularly waits for a remote procedure call server thread link request; an instrument control end sends broadcast to an integral network; after receiving the broadcast, a port-mapping port packages information and sends the information to the instrument control end; and the control end is communicated with the port mapping program server thread and is communicated with the server end after obtaining the port number, and the server end sends instrument information to the instrument control end to complete the network discovery process. The VXI-11 network automatic discovery method is applied to the field of development of the LXI instrument.
Description
Technical field
The present invention relates to network from the discovery method, be specifically related to VXI-11 network autodiscovery method based on the LXI instrument of DSP/BIOS operating system.
Background technology
Along with science and technology development, test assignment is increasingly sophisticated, and test point is more and more disperseed, and the distributed network test has become an important directions of measuring technology development.In order to adapt to this new developing direction of Auto-Test System, a kind of new instrument has been proposed---LXI instrument (LAN extension for Instrumentation).The computed LAN interface of LXI and Web browser are set up Auto-Test System, and this system has back compatible property, with low cost, characteristics such as interoperability is strong.The release of LXI instrument bus provides more effectively means for making up distributed test system, and the LXI instrument becomes the new direction of tester development, also becomes the emphasis of research in the industry.
Existing LXI instrument adopts the (SuSE) Linux OS of ARM chip, and there is the problem that the exploitation driver is complicated, operational hardware is difficult and message transmission rate is slow in this operating system.
Summary of the invention
There is the problem that the exploitation driver is complicated, operational hardware is difficult and message transmission rate is slow in the present invention in order to solve existing (SuSE) Linux OS, thereby has proposed the VXI-11 network autodiscovery method based on the LXI instrument of DSP/BIOS operating system.
Based on the VXI-11 network autodiscovery method of the LXI instrument of DSP/BIOS operating system, it comprises the steps:
A, at the server end of LXI instrument, its enable port mapping program server thread is obtained the port numbers of server thread and the remote procedure call server thread linking request of circular wait instrument control end;
B, instrument control end send the udp broadcast message GET_PORT of querying server port numbers to whole network;
After the port mapping port of C, LXI instrument receives the broadcasting that the instrument control end sends, server end slogan and various information are packaged into the VXI-11 packet are sent to the instrument control end;
D, instrument control end communicate with mode and the port mapping procedure service device thread of TCP, to acknowledge receipt of the Service-Port information of LXI instrument;
Mode and server end that E, instrument control end are obtained after the port numbers with TCP again communicate, with inquiry LXI instrument information;
The server end of F, LXI instrument sends instrument information with the predetermined data form to the instrument control end, and this information comprises vendor code and instrument webpage, on Angilent I/O panel, shows the LXI instrument, accomplishes network discovery process.
This method has the user's of being convenient to operation and searches for characteristics fast, is convenient to link up the effect of upper strata instrument driving and instrument, and accomplishes the control of instrument and the effect of communicating by letter.The present invention is through being embedded in DSP/BIOS operating system in the LXI instrument, and it is simple to have reached the exploitation driver, the purpose of operational hardware convenience and message transmission rate fast (time-frequency reaches 600MHz).
The realization of VXI-11 in the LXI instrument is based on RPC (Remote Procedure Call) principle, and RPC is a remote procedure call.The RPC main frame is through the function on the far call server, and function is carried out on the server of realizing its code, and the result who the carries out main frame of back RPC request of redispatching, the mode of this kind function call is remote procedure call at last.
Having two RPC program packages commonly used at present is RPC program packages of Sun RPC (being ONC/RPC) and open software fund (OSF:OpenSoftware Foundation) DCE (DCE:Distributed Computing Environment).Require all LXI instruments to realize VXI-11 network discovery agreement in the LXI standard, and that the employing of VXI-11 network discovery agreement promptly is ONC/RPC.
Description of drawings
Fig. 1 is the VXI-11 network autodiscovery method flow diagram based on the LXI instrument of DSP/BIOS operating system;
Fig. 2 is a VXI-11 network discovery process sketch map;
Fig. 3 is the hardware configuration sketch map of LXI instrument;
Fig. 4 is the operational flow diagram of port mapping procedure service device thread;
Fig. 5 is the operational flow diagram of remote procedure call server thread.
Embodiment
Embodiment one, combination Fig. 1 and Fig. 2 specify this execution mode; The VXI-11 network autodiscovery method of the described LXI instrument based on DSP/BIOS operating system of this execution mode; DSP/BIOS operating system is embedded in the LXI instrument, and it comprises the steps:
A, at the server end of LXI instrument, its enable port mapping (PORTMAP) procedure service device thread is obtained the port numbers of server thread and remote procedure call (RPC) the server thread linking request of circular wait instrument control end;
B, instrument control end send the udp broadcast message GET_PORT of querying server port numbers to whole network;
After the port mapping port of C, LXI instrument receives the broadcasting that the instrument control end sends, server end slogan and various information are packaged into the VXI-11 packet are sent to the instrument control end;
D, instrument control end communicate with mode and the port mapping procedure service device thread of TCP, to acknowledge receipt of the Service-Port information of LXI instrument;
Mode and server end that E, instrument control end are obtained after the port numbers with TCP again communicate, with inquiry LXI instrument information;
The server end of F, LXI instrument sends instrument information with the predetermined data form to the instrument control end, and this information comprises vendor code and instrument webpage, on Angilent I/O panel, shows the LXI instrument, accomplishes network discovery process.
The present invention utilizes the DSP/BIOS system to realize RPC mechanism, and autonomous Design RPC storehouse is to reach the function of remote procedure call in program.It is simple to utilize DSP to control hardware, at a high speed, is easy to safeguard that reduced design cost, versatility is stronger.
The present invention adopts C6000 DSP (DM642) as processor, carries Ethernet interface, has substituted arm processor and has had higher processing speed; The high energy of operating frequency is to 720M, and disposal ability reaches 57600MIPS, is easy to control hardware; And transfer of data is faster, and reliability is higher; DSP/BIOS operating system is pressed close to linux system, and difference is in upper computer software CCS, adopting the graphic interface configuration with DSP/BIOS, with respect to the simple easy operating of LInux; And the establishment network program need not to control the bottom parameter, and program is general, is easy to safeguard.
Embodiment two; Specify this execution mode in conjunction with Fig. 3; The difference of the VXI-11 network autodiscovery method of the described LXI instrument based on DSP/BIOS operating system of this execution mode and embodiment one is; The LXI instrument comprises trigger interface module 1; Flip chip 2; Functional interface module 3; FPGA module 4; RJ45 connector 5; Network transformer 6; Network drive 7; Dsp chip 8; Power module 9; FLASH module 10; SDRAM module 11; Clock module 12 and battery module 13
The external hardware triggering signal is sent to the trigger interface of flip chip 2 through trigger interface module 1,
The transmission FPGA triggering signal of flip chip 2 is given the trigger interface of FPGA module 4,
The function logic interface of functional interface module 3 is connected with the function logic interface of FPGA module 4,
The ethernet communication port of dsp chip 8 is connected with RJ45 connector 5 through network drive 7, network transformer 6,
Network drive 7 sends regularly square-wave signal and gives module 4, is used for the test of network chip,
The first memory interface of dsp chip 8 is connected with the memory interface of FLASH module 10, and FLASH module 10 is used to store dsp chip 8 programs,
The second memory interface of dsp chip 8 is connected with the memory interface of SDRAM module 11, and SDRAM module 11 is used to move dsp chip 8 programs,
The clock interface of dsp chip 8 is connected with the clock interface of clock module 12,
The power port of clock module 12 is connected with the power port of battery module 13.
It is the TMS320DM642 that TI company releases that the present invention adopts dsp chip; Perhaps be DM642; Through this chip structure LXI instrument; The LXI instrument bus adopted based on S structure come instrument is carried out basic control, in the LXI instrument, set up the remote procedure call server, must the ports having mapping program.Service-Port is the Random assignment of LXI instrument internal, and the instrument control end is not also known this port, but the port of port mapping procedure service device is a known port number, and its port numbers at TCP and UDP all is 111.Therefore 2 threads, remote procedure call server thread and port mapping procedure service device thread in dsp system, have been created.
Embodiment three, combination Fig. 4 specify this execution mode; The difference of the VXI-11 network autodiscovery method of the described LXI instrument based on DSP/BIOS operating system of this execution mode and embodiment one is that the detailed process of setting up of port mapping procedure service device thread is:
Step 1, beginning;
TCP is created in step 3, judgement, whether the UDP socket is wrong, is judged as to be execution in step 15; Be judged as not execution in step four;
Step 7, registration server port;
Step 14, judge whether the remote procedure call packet is sent to client, be judged as and be execution in step 15; Be judged as not execution in step eight.：
Step 15 finishes the foundation of port mapping program server thread.
The port numbers of port mapping program under UDP and TCP mode all is 111; Itself also can be regarded a kind of remote procedure call server program as simultaneously; Have a collection of functions; The VXI-11 agreement has stipulated that its program number is that 0x186A0, version number are 2; 6 remote function: PMAPPROC_NULL, PMAPPROC_SET, PMAPPROC_UNSET, PMAPPROC_GETPORT, PMAPPROC_DUMP, PMAPPROC_CALLIT have been comprised in this collection of functions altogether; Process number is respectively 0,1,2,3,4,5, and wherein PMAPPROC_SET is that server calls is come to PORTMAP registration self, and PMAPPROC_GETPORT obtains the port numbers of remote procedure call server for the remote procedure call protocol client call.
Because DSP/BIOS is a multiple task operating system; What port mapping program and remote procedure call server program were corresponding all is a task, and directly can adopt mailbox to communicate between the task, so server does not adopt the mode of remote procedure call to the registration of port mapping program; Be the PMAPPROC_SET function in the design not with realization; In order to reduce design difficulty, design processes simplified has only realized the PMAPPROC_GETPORT function.
In the system manager is engaged in, create port mapping procedure service device thread mission thread, its priority is 4, and the implementation procedure of this task is as shown in Figure 4.
Embodiment four, combination Fig. 5 specify this execution mode; The difference of the VXI-11 network autodiscovery method of the described LXI instrument based on DSP/BIOS operating system of this execution mode and embodiment one is that the detailed process of setting up of remote procedure call server thread is:
Whether step 10 eight, judge to create the TCP socket wrong, is judged as to be execution in step 32; Be judged as not execution in step 19;
When request of data when connecting, then execution in step 26;
When request of data was reading of data, then execution in step 27;
When request of data connected for breaking off, then execution in step 28;
The foundation of step 3 12, end remote procedure call server thread.
The foundation of remote procedure call server program is similar to port mapping procedure service device thread and sets up, and main task is the TCP request of monitoring client, instrument information such as the manufacturer of Returning equipment, model, sequence number then.
The remote procedure call server program is divided into core passage, abnormal passage and interrupting channel; Each passage is safeguarded a collection of functions; In the design, only need discovering device, obtain the essential information of equipment, so only realized create_link (process number is 10), device_read (process number is 12), destroy_link (process number the is 23) function of core passage; The program number of core passage is 0x607AF, and version number is 1.The create_link function is used for client and server end connects, and device_read is used to read the facility information of server, and destroy_link is used for breaking off and is connected with server.The server task thread is by port mapping procedure service device thread task creation, and its running is as shown in Figure 5.
Claims (4)
1. based on the VXI-11 network autodiscovery method of the LXI instrument of DSP/BIOS operating system, it is characterized in that DSP/BIOS operating system is embedded in the LXI instrument, it comprises the steps:
A, at the server end of LXI instrument, its enable port mapping program server thread is obtained the port numbers of server thread and the remote procedure call server thread linking request of circular wait instrument control end;
B, instrument control end send the udp broadcast message GET_PORT of querying server port numbers to whole network;
After the port mapping port of C, LXI instrument receives the broadcasting that the instrument control end sends, server end slogan and various information are packaged into the VXI-11 packet are sent to the instrument control end;
D, instrument control end communicate with mode and the port mapping procedure service device thread of TCP, to acknowledge receipt of the Service-Port information of LXI instrument;
Mode and server end that E, instrument control end are obtained after the port numbers with TCP again communicate, with inquiry LXI instrument information;
The server end of F, LXI instrument sends instrument information with the predetermined data form to the instrument control end, and this information comprises vendor code and instrument webpage, on Angilent I/O panel, shows the LXI instrument, accomplishes network discovery process.
2. the VXI-11 network autodiscovery method of the LXI instrument based on DSP/BIOS operating system according to claim 1; It is characterized in that; The LXI instrument comprises trigger interface module (1); Flip chip (2); Functional interface module (3); FPGA module (4); RJ45 connector (5); Network transformer (6); Network drive (7); Dsp chip (8); Power module (9); FLASH module (10); SDRAM module (11); Clock module (12) and battery module (13)
The external hardware triggering signal is sent to the trigger interface of flip chip (2) through trigger interface module (1),
The transmission FPGA triggering signal of flip chip (2) is given the trigger interface of FPGA module (4),
The function logic interface of functional interface module (3) is connected with the function logic interface of FPGA module (4),
The ethernet communication port of dsp chip (8) is connected with RJ45 connector (5) through network drive (7), network transformer (6),
Network drive (7) sends regularly square-wave signal and gives module 4, is used for the test of network chip,
Dsp chip (8) is used for the total thread of operational network,
FPGA module (4) is connected through data address bus with dsp chip (8),
The first memory interface of dsp chip (8) is connected with the memory interface of FLASH module (10), and FLASH module (10) is used to store dsp chip (8) program,
The second memory interface of dsp chip (8) is connected with the memory interface of SDRAM module (11), and SDRAM module (11) is used to move dsp chip (8) program,
The clock interface of dsp chip (8) is connected with the clock interface of clock module (12),
The power port of clock module (12) is connected with the power port of battery module (13).
3. the VXI-11 network autodiscovery method of the LXI instrument based on DSP/BIOS operating system according to claim 1 is characterized in that the detailed process of setting up of port mapping procedure service device thread is:
Step 1, beginning;
Step 2, establishment TCP, UDP socket,
TCP is created in step 3, judgement, whether the UDP socket is wrong, is judged as to be execution in step 15; Be judged as not execution in step four;
Step 4, binding IP and port information;
Step 5, judge whether binding IP and port information be wrong, is judged as to be execution in step 15; Be judged as not execution in step six;
Step 6, establishment server thread;
Step 7, registration server port;
Step 8, monitoring remote procedure call client data request;
Step 9, judgement have or not the remote procedure call client data request, are judged as to be execution in step ten; Be judged as not execution in step eight;
Step 10, parsing remote procedure call client data request;
Step 11, judge whether client will obtain the port numbers of server, is judged as to be execution in step 12; Be judged as not execution in step eight;
Step 12, the port of server is packaged into the remote procedure call packet;
Step 13, the remote procedure call packet is sent to client;
Step 14, judge whether the remote procedure call packet is sent to client, be judged as and be execution in step 15; Be judged as not execution in step eight.：
Step 15 finishes the foundation of port mapping program server thread.
4. the VXI-11 network autodiscovery method of the LXI instrument based on DSP/BIOS operating system according to claim 1 is characterized in that the detailed process of setting up of remote procedure call server thread is:
Step 10 six, beginning;
Step 10 seven, establishment TCP socket;
Whether step 10 eight, judge to create the TCP socket wrong, is judged as to be execution in step 32; Be judged as not execution in step 19;
Step 10 nine, dynamically obtain the port numbers of a free time from system;
Step 2 ten, port numbers and IP information are bound;
Step 2 11, judge that whether wrong port numbers and IP information bind, be judged as and be execution in step 32; Be judged as not execution in step 22;
Step 2 12, to port mapping procedure service device thread registered port numbers;
Step 2 13, the request of monitoring the remote procedure call client;
Step 2 14, judgement have or not the remote procedure call client data request, are judged as to be execution in step 25; Be judged as not execution in step 22;
Step 2 15, parsing remote procedure call client data request,
When request of data when connecting, then execution in step 26;
When request of data was reading of data, then execution in step 27;
When request of data connected for breaking off, then execution in step 28;
Step 2 16, server are set up and are connected execution in step 31 with the TCP of client;
Step 2 17, server read instrument information, execution in step 29;
Step 2 18, server break off and are connected execution in step 31 with the TCP of client;
Step 2 19, the port of server is packaged into the remote procedure call packet;
Step 3 ten, the remote procedure call packet is sent to client;
Step 3 11, judge whether the remote procedure call packet is sent to client, be judged as and be execution in step 32; Be judged as not execution in step 23;
The foundation of step 3 12, end remote procedure call server thread.
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Cited By (5)
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| CN103117895A (en) * | 2013-01-25 | 2013-05-22 | 哈尔滨工业大学 | LXI instrument service monitoring method |
| CN105162658A (en) * | 2015-09-11 | 2015-12-16 | 烽火通信科技股份有限公司 | Universal verification platform and method for development of network core chip technology |
| CN116500466A (en) * | 2023-06-28 | 2023-07-28 | 吉林大学 | LXI bus-based integrated battery parameter measurement system and method |
| CN117395321A (en) * | 2023-12-12 | 2024-01-12 | 中国电子科技集团公司第五十四研究所 | Multi-user multi-task concurrency-oriented data transparent transmission method based on connectionless |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103118012A (en) * | 2013-01-15 | 2013-05-22 | 上海创远仪器技术股份有限公司 | General instrument VXI-11 protocol adaptation system and general instrument and adaptation control method |
| CN103117895A (en) * | 2013-01-25 | 2013-05-22 | 哈尔滨工业大学 | LXI instrument service monitoring method |
| CN103117895B (en) * | 2013-01-25 | 2016-01-13 | 哈尔滨工业大学 | A kind of services listen method of LXI instrument |
| CN105162658A (en) * | 2015-09-11 | 2015-12-16 | 烽火通信科技股份有限公司 | Universal verification platform and method for development of network core chip technology |
| CN105162658B (en) * | 2015-09-11 | 2018-02-13 | 烽火通信科技股份有限公司 | Generic validation platform and method for network class acp chip technological development |
| CN116500466A (en) * | 2023-06-28 | 2023-07-28 | 吉林大学 | LXI bus-based integrated battery parameter measurement system and method |
| CN116500466B (en) * | 2023-06-28 | 2023-09-15 | 吉林大学 | LXI bus-based integrated battery parameter measurement system and method |
| CN117395321A (en) * | 2023-12-12 | 2024-01-12 | 中国电子科技集团公司第五十四研究所 | Multi-user multi-task concurrency-oriented data transparent transmission method based on connectionless |
| CN117395321B (en) * | 2023-12-12 | 2024-03-12 | 中国电子科技集团公司第五十四研究所 | Multi-user multi-task concurrency-oriented data transparent transmission method based on connectionless |
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Application publication date: 20121017 |