CN104503852A - Multiprocess serial port communication method - Google Patents
Multiprocess serial port communication method Download PDFInfo
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- CN104503852A CN104503852A CN201410824323.2A CN201410824323A CN104503852A CN 104503852 A CN104503852 A CN 104503852A CN 201410824323 A CN201410824323 A CN 201410824323A CN 104503852 A CN104503852 A CN 104503852A
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- serial port
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Abstract
The invention discloses a multiprocess serial port communication method which comprises the following steps that: Step 1, N programs operate a single serial port program and give serial port operation commands, wherein N is a natural number and is equal to or greater than 1; Step 2, the N serial port operation commands given by the N programs wait in line in a serial port program communication module; and Step 3, the serial port communication module transmits the serial port operation commands; after a computer serial port make a response, the serial port program communication module is accessed; the N serial port operation commands waiting in line in the serial port communication module make a response sequentially; and the corresponding N programs are executed according to a response sequence. The method can realize operation of the programs on the single serial port.
Description
Technical field
The present invention relates to a kind of communication means, especially relate to a kind of multi-process serial port communication method.
Background technology
In prior art; often have multiple program to run on computers simultaneously; sometimes need multiple process to operate computer serial port simultaneously; and when multiple process operates computer serial port simultaneously; there will be a process take serial ports handle and other processes cannot be accessed serial ports, cause other programs normally to run.
Summary of the invention
In view of this, the object of the invention is for the deficiencies in the prior art, provide a kind of multi-process serial port communication method, the method can realize multiple program and operate same serial ports.
For achieving the above object, the present invention by the following technical solutions:
A kind of multi-process serial port communication method, comprises the steps:
Step 1, the same serial ports program of N number of procedure operation, sends operation serial port command, and N is natural number, N >=1;
Step 2, N number of operation serial port command that N number of program sends is ranked wait in serial ports interprogram communication module;
Step 3, serial communication modular transmit operation serial port command, after serial ports of computers response, access serial ports interprogram communication module, the N number of operation serial port command waited in line in serial communication modular responds successively, performs corresponding N number of program by the order of response.
As preferably, the time order and function order that N number of operation serial port command of described N number of program sends by operational order in serial ports interprogram communication module is ranked wait.
The invention has the beneficial effects as follows:
When the program of multiple operation serial ports is run, multi-process serial communication program, using the middle layer as procedure operation serial ports, communicates with the serial ports of computing machine, and gives corresponding program by the responsive feedback of serial ports.The invention solves when multiple program needs to access same serial equipment, when the process of a program obtains serial ports handle, cause the problem that other program cannot operate this serial ports, multi-process serial port communication technology can make all programs access a serial equipment simultaneously.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, the present invention includes following steps:
Step 1, the same serial ports program of N number of procedure operation, each program sends 1 operation serial port command, and N number of program sends N number of operation serial port command altogether, accesses same serial ports, and N is natural number, N >=1.
Step 2, N number of operation serial port command to be ranked wait by the time order and function order sent in serial ports interprogram communication module; Here serial ports interprogram communication module is the multi-process serial ports interprogram communication module software module built.
Step 3, serial communication modular sends serial port command to serial ports of computers, after serial ports of computers response, and access serial ports interprogram communication module, the N number of operation serial port command waited in line in serial communication modular responds successively, performs corresponding N number of program by the order of response.When order 1 responds, perform corresponding program 1, after program 1 is finished, order 2 response, perform corresponding program 2, program N is to the last finished.
The multiple process in prior art that the invention solves there will be a process and takes serial ports handle and other processes cannot be accessed serial ports when operating serial ports of computers, cause the technical barrier that other programs cannot normally be run.The present invention can realize multiple process and operate serial ports of computers simultaneously, and the program of avoiding normally cannot be run and cause deadlock problem.The invention solves a computer and dispose the inconvenience that multiple serial equipment brings and the problem of saving hardware purchase expense.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (2)
1. a multi-process serial port communication method, is characterized in that: comprise the steps:
Step 1, the same serial ports program of N number of procedure operation, sends operation serial port command, and N is natural number, N >=1;
Step 2, N number of operation serial port command that N number of program sends is ranked wait in serial ports interprogram communication module;
Step 3, serial communication modular transmit operation serial port command, after serial ports of computers response, access serial ports interprogram communication module, the N number of operation serial port command waited in line in serial communication modular responds successively, performs corresponding N number of program by the order of response.
2. according to a kind of multi-process serial port communication method described in claim 1, it is characterized in that: the time order and function order that N number of operation serial port command of described N number of program sends by operational order in serial ports interprogram communication module is ranked wait.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410824323.2A CN104503852A (en) | 2014-12-26 | 2014-12-26 | Multiprocess serial port communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410824323.2A CN104503852A (en) | 2014-12-26 | 2014-12-26 | Multiprocess serial port communication method |
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| CN104503852A true CN104503852A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410824323.2A Pending CN104503852A (en) | 2014-12-26 | 2014-12-26 | Multiprocess serial port communication method |
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| CN (1) | CN104503852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111475318A (en) * | 2020-04-29 | 2020-07-31 | 中国人民解放军军事科学院国防科技创新研究院 | Serial port communication device, method and system supporting multi-user access |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751291A (en) * | 2009-12-30 | 2010-06-23 | 广东威创视讯科技股份有限公司 | Method of sharing one serial port by application programs and device |
| CN102446144A (en) * | 2010-09-30 | 2012-05-09 | 北大方正集团有限公司 | Method, device and system for scheduling serial port resources |
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2014
- 2014-12-26 CN CN201410824323.2A patent/CN104503852A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751291A (en) * | 2009-12-30 | 2010-06-23 | 广东威创视讯科技股份有限公司 | Method of sharing one serial port by application programs and device |
| CN102446144A (en) * | 2010-09-30 | 2012-05-09 | 北大方正集团有限公司 | Method, device and system for scheduling serial port resources |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111475318A (en) * | 2020-04-29 | 2020-07-31 | 中国人民解放军军事科学院国防科技创新研究院 | Serial port communication device, method and system supporting multi-user access |
| CN111475318B (en) * | 2020-04-29 | 2021-02-23 | 中国人民解放军军事科学院国防科技创新研究院 | Serial port communication device, method and system supporting multi-user access |
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Address after: Kim street 450002 in Henan province Zhengzhou City Hospital No. 7 office building No. 1 Applicant after: HENAN XIN'AN COMMUNICATION TECHNOLOGY CO., LTD. Address before: Kim street 450002 in Henan province Zhengzhou City Hospital No. 7 office building No. 1 Applicant before: HENAN XINAN COMMUNICATION TECHNOLOGY CO., LTD. |
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Address after: 450001 No. 5 Sakura street, hi tech Development Zone, Henan, Zhengzhou Applicant after: HENAN XIN'AN COMMUNICATION TECHNOLOGY CO., LTD. Address before: Kim street 450002 in Henan province Zhengzhou City Hospital No. 7 office building No. 1 Applicant before: HENAN XIN'AN COMMUNICATION TECHNOLOGY CO., LTD. |
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Application publication date: 20150408 |