CN111224835B - Automatic serial port communication mode switching method, device and system - Google Patents
Automatic serial port communication mode switching method, device and system Download PDFInfo
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- CN111224835B CN111224835B CN201911139456.5A CN201911139456A CN111224835B CN 111224835 B CN111224835 B CN 111224835B CN 201911139456 A CN201911139456 A CN 201911139456A CN 111224835 B CN111224835 B CN 111224835B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/50—Testing arrangements
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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
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Abstract
The invention relates to the technical field of communication, in particular to a serial port communication mode automatic switching method, a serial port communication mode automatic switching device and a serial port communication mode automatic switching system, wherein the method comprises the following steps: acquiring a communication mode to be switched of a serial port pair to be tested; and switching the communication mode of the serial port pair to be tested to be the communication mode to be switched. According to the invention, the communication mode of the serial port pair to be switched is firstly obtained, and then the communication mode of the serial port pair to be switched is switched according to the obtained information, so that the automatic switching of the serial port communication mode in the serial port test process of the communication manager is realized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for automatically switching serial port communication modes.
Background
Communication interfaces of communication management machines in the market at present often adopt communication modes such as RS232, RS422, RS485, ethernet and wifi, but different types of communication management machines adopt different communication modes, some devices adopt an RS485 communication mode, some devices adopt an RS485 and RS232 two-in-one communication mode, some devices adopt an RS232, RS422 and RS485 three-in-one communication mode, wiring methods adopted by different communication modes are different, and the communication interfaces cannot be commonly used in serial port test.
In general, the serial port test mode of the communication manager is that serial port pair tests are carried out by using the same communication mode for every two serial ports, and the test process needs to manually operate and change lines.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a serial port communication mode automatic switching method, a serial port communication mode automatic switching device and a serial port communication mode automatic switching system for a communication manager.
In order to solve the technical problems, the invention adopts the following technical scheme:
in a first aspect, a method for automatically switching serial port communication modes is provided, including:
acquiring a communication mode to be switched of a serial port pair to be tested;
and switching the communication mode of the serial port pair to be tested to be the communication mode to be switched.
After the communication mode to be switched of the serial port pair to be detected is obtained, and before the communication mode of the serial port pair to be detected is switched to the communication mode to be switched, the serial port communication mode automatic switching method further comprises the following steps:
acquiring position information of a serial port pair to be tested;
and selecting a serial port pair to be tested according to the position information.
After the communication mode of the serial port pair to be detected is switched to the communication mode to be switched, the serial port communication mode automatic switching method further comprises the following steps:
and sending the information of the serial port to be tested for completing the switching of the communication modes.
The serial port communication mode automatic switching method can be applied to a serial port controller, at least one serial port switching module is connected to the serial port controller, the serial port pair to be tested comprises a first serial port and a second serial port which are connected to the same serial port switching module, and the switching of the communication modes of the serial port pair to be tested comprises the following steps:
selecting a serial port switching module according to the position information of the serial port pair to be tested;
and switching the communication mode of the selected serial port switching module to be the communication mode of the serial port pair to be tested to be switched.
In a second aspect, an automatic serial port communication mode switching device is provided, including:
the acquisition module is used for acquiring the communication mode and the position information of the serial port pair to be detected to be switched;
and the switching module is used for switching the communication mode of the serial port pair to be tested.
Wherein, the automatic switching device of serial port communication mode still includes:
the selection module is used for selecting a serial port pair to be tested;
and the sending module is used for sending the information of the completion of the switching of the serial port to be tested to the communication mode.
In a third aspect, an automatic serial port communication mode switching system is provided, including:
a terminal;
the switch is in communication connection with the terminal;
the serial port controller is in communication connection with the switch;
the serial port switching module is connected with the serial port controller; the method comprises the steps of,
the communication manager is connected with the serial port switching module and is in communication connection with the switch.
The invention has the beneficial effects that: the automatic switching of the serial communication mode in the serial port testing process of the communication manager is realized by firstly acquiring the communication mode to be switched of the serial port pair to be tested and then switching the communication mode of the serial port pair to be tested according to the acquired information.
Drawings
The following details the specific construction of the present invention with reference to the accompanying drawings
Fig. 1 is a flow chart of a serial communication mode automatic switching method according to a first embodiment of the present invention;
fig. 2 is a flow chart of a serial communication mode automatic switching method according to a second embodiment of the present invention;
FIG. 3 is a block flow diagram of a method for automatically switching serial communication modes according to a third embodiment of the present invention;
fig. 4 is a flow chart of a serial communication mode automatic switching method according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an automatic serial port communication mode switching device according to a first embodiment of the present invention;
fig. 6 is a schematic structural diagram of an automatic serial port communication mode switching device according to a fourth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an automatic serial port communication mode switching system according to a fifth embodiment of the present invention;
fig. 8 is a schematic diagram of a connection mode between a serial port switching module and a group of serial port pairs to be tested of a communication manager according to a fifth embodiment of the present invention.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present invention in detail, the following description is made in connection with the embodiments and the accompanying drawings.
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes an example of a communication manager serial port test of three-in-one communication modes of RS232, RS422 and RS 485.
Referring to fig. 1, fig. 1 is a flow chart of a serial communication mode automatic switching method according to a first embodiment of the present invention. As shown in fig. 1, a method for automatically switching serial communication modes includes:
step S100, the communication mode to be switched of the serial port pair to be tested is obtained.
The communication mode to be switched can be one of RS232, RS422 and RS 485.
Step S160, switching the communication mode of the to-be-tested serial port pair to be the to-be-switched communication mode.
The communication mode of the serial port pair to be tested is three-in-one of RS232, RS422 and RS485, and can be switched to one of the three modes.
In summary, the serial port communication mode automatic switching method provided by the invention has the beneficial effects that: the automatic switching of the serial communication mode in the serial port testing process of the communication manager is realized by firstly acquiring the communication mode to be switched of the serial port pair to be tested and then switching the communication mode of the serial port pair to be tested according to the acquired information.
Referring to fig. 2, fig. 2 is a flow chart of a serial communication mode automatic switching method according to a second embodiment of the present invention.
Further, after the communication mode to be switched of the serial port pair to be detected is obtained, before the communication mode of the serial port pair to be detected is switched to the communication mode to be switched, the serial port communication mode automatic switching method further includes:
step S120, the position information of the serial port pair to be tested is obtained.
Specifically, the serial port pairs to be tested may be one group or more.
And step S140, selecting a serial port pair to be tested according to the position information.
Referring to fig. 3, fig. 3 is a flow chart of a serial communication mode automatic switching method according to a third embodiment of the present invention.
Further, after the communication mode of the serial port pair to be detected is switched to the communication mode to be switched, the serial port communication mode automatic switching method further includes:
step S180, transmitting the information of the completion of the switching of the serial port to be tested to the communication mode.
And after the communication modes of the serial port pair to be tested are switched, sending switching completion information to the outside, and testing the communication modes after the serial port pair to be tested starts to be switched.
Referring to fig. 4, fig. 4 is a flowchart of a serial communication mode automatic switching method according to a fourth embodiment of the present invention.
In the foregoing embodiment, the automatic serial port communication mode switching method may be applied to a serial port controller, where at least one serial port switching module is connected to the serial port controller, the to-be-tested serial port pair includes a first serial port and a second serial port connected to the same serial port switching module, and the switching the communication mode of the to-be-tested serial port pair includes:
step S162, selecting a serial port switching module according to the position information of the serial port pair to be tested.
In this embodiment, the serial port controller may be connected to at least one serial port switching module, and the serial port controller determines, according to the obtained position information of the serial port pair to be tested, on which serial port switching module the serial port pair to be tested is located.
Step S164, switching the mode of the selected serial port switching module to be the communication mode to be switched of the serial port pair to be tested.
The communication mode of the serial port switching module is three-in-one of RS232, RS422 and RS485, and can be switched into one of the three modes.
It should be noted that, one serial port switching module may be connected to at least one group of serial port pairs to be tested, and the serial port controller selects each serial port switching module connected to each group of serial port pairs to be tested according to the received position information of each group of serial port pairs to be tested to switch the communication mode of each serial port switching module to one of RS232, RS422 and RS 485.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an automatic serial communication mode switching device according to a first embodiment of the present invention. As shown in fig. 5, an automatic switching device for serial communication modes includes:
the acquisition module 10 is used for acquiring the communication mode and the position information of the serial port pair to be detected to be switched;
the switching module 30 is configured to switch the communication mode of the serial port pair to be tested.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an automatic serial communication mode switching device according to a fourth embodiment of the present invention.
Further, the automatic serial port communication mode switching device further comprises:
the selecting module 20 is configured to select a serial port pair to be tested.
And the sending module 40 is used for sending the communication mode switching completion information of the serial port to be tested.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an automatic serial communication mode switching system according to a fifth embodiment of the present invention. As shown in fig. 7, an automatic serial port communication mode switching system includes:
a terminal 100;
a switch 200 communicatively connected to the terminal 100;
a serial controller 300 communicatively connected to the switch 200;
a serial port switching module 400 connected to the serial port controller 300; the method comprises the steps of,
and the communication manager 500 is connected with the serial port switching module 400, and the communication manager 500 is connected with the switch 200 in a communication way.
In this embodiment, the serial port switching modules 400 include four serial port switching modules 400, and each serial port switching module 400 is connected to three communication managers 500 respectively.
It is understood that the serial port controller 300 may be connected to at least one serial port switching module 400, and the number of communication managers 500 accessible to each serial port switching module 400 is related to the number of serial ports of the communication manager 500.
The terminal 100 may be a computer, and is configured to install automatic test software of the communication manager 500, where the software includes multiple functional modules of the communication manager 500, such as program downloading, file comparison downloading, user management, PCBA testing, product testing, and test report query, so that multiple interfaces or functions of the communication manager 500, such as ethernet, serial port, RTC, FLASH, etc., can be automatically tested, and the testing process can test multiple communication managers 500 and functions without manual operation, thereby improving the production testing efficiency of the communication manager 500 and reducing the labor cost. The PCBA test and the finished product test comprise multiple interface function tests such as Ethernet, serial ports, USB, SD card, RTC, FLASH and the like, and are important test contents of the communication manager 500. The terminal 100 is used as a host server, and is accessed to the switch 200 through a network cable, the terminal 100 and the IP address network segment of each communication manager 500 are in the same network segment, mainly realize data communication with different IP address communication manager 500 devices, the terminal 100 communication manager 500 automatic test software issues content information such as test control commands and the like to each communication manager 500, receives test state results of each communication manager 500, and stores the test results of each communication manager 500 in a database, so that the user can conveniently inquire and record.
The switch 200 mainly plays a role of data exchange, performs data transmission between at least one port at the same time, can realize data transmission functions of different IP network segments, and reduces the number of network ports of the terminal 100. The terminal 100, the serial controller 300 and the communication manager 500 are all connected to the switch 200 through an ethernet port, so that data transmission among the terminal 100, the serial controller 300 and the communication manager 500 is realized. The terminal 100 communicates with different communication managers 500 through the switch 200, and sends information such as communication working parameters and working modes of serial ports RS232, RS422 and RS485 of the communication manager 500. The different communication managers 500 communicate with the serial port controller 300, and send the communication modes of RS232, RS422 and RS485 to the serial port controller 300, and switch to corresponding communication circuits.
Referring to fig. 8, fig. 8 is a schematic diagram illustrating a connection mode between a serial port switching module and a set of serial port pairs to be tested of a communication manager 500 according to a fifth embodiment of the present invention.
The serial controller 300 is used as a server device, the internal IP address and network segment are fixed, and the serial controller 300 is located in different IP network segments with the terminal 100 and the communication manager 500, and can only be connected with each communication manager 500 in a network manner, but cannot be connected with the terminal 100 in a network manner. If the client communication manager 500 receives the serial communication mode test command issued by the terminal 100, it actively connects to the server serial controller 300, sends information such as serial communication mode and serial switching path number to the serial controller 300, after the serial controller 300 receives the information, allocates and processes the serial switching path number to be located in that serial switching module 400, and the serial controller 300 sends serial RS232, RS422 and RS485 working module circuit switching commands to the selected serial switching module 400, so as to control the serial switching module 400 to implement signal switching of the RS232, RS422 and RS485 circuits. After the serial port controller 300 completes the serial port communication mode sending command, the data is returned to the communication manager 500, which indicates that the switching of the circuit signal is completed, and the serial port pair test can be performed.
The serial controller 300 can adopt high-performance ARM series, power pc series, 51 series and other processors to realize data acquisition and processing capacity, and has communication interfaces such as Ethernet, 4G, wifi, serial ports and the like. The communication mode between the serial port controller 300 and the serial port switching module 400 adopts a GPIO (General-purpose input/output port) to simulate a three-wire system communication mode, the serial port controller 300 can be provided with at least one serial port switching module 400, the number of the serial port switching modules 400 is unlimited theoretically, the number of the serial port switching modules 400 is related to the number of the GPIOs of the processors, and if the MCU processor has 21 GPIOs, 7 serial port switching modules 400 can be connected.
The serial port switching module 400 realizes the serial port signal switching of two RS232, RS422 and RS485, ensures that the two serial ports realize the serial port pair test, and is used as a serial port communication mode circuit signal switching module to realize the serial port communication mode circuit signal switching of different types such as RS232, RS422 and RS 485. The signal switching of the RS232, RS422 and RS485 serial circuits is realized through the automatic switching of a relay, and the operation of people is not needed. The serial port switching module 400 can switch the communication modes of the RS232, RS422 and RS485 interfaces by 16 pairs of serial ports, and the serial port switching module 400 can only receive switching command signals and can not transmit commands back to the serial port controller 300. The serial number of the serial port switching module 400 is a serial number allocated to the serial port switching module 400 of each interface by the serial port controller 300, and corresponds to the serial number of the communication manager 500.
The communication manager 500 is used as a data collection processor and has various communication interfaces such as serial ports, ethernet, USB, wireless, etc., wherein important interface functions are serial ports and ethernet. Because of different types and functional positioning, the number of serial ports of the communication management machine 500 is even, and at least more than 2 paths of serial ports exist, and the number of serial ports of the communication management machine 500 is generally 2, 4, 8, 16 and other types. The serial port has independent RS485 communication modes, RS485 and RS422 two-in-one communication modes, RS232, RS422, RS485 three-in-one communication modes and other different types of combined communication modes, and the serial port automatic test can automatically identify and switch different communication modes to perform serial port function test.
The function of the communication manager 500 is to download the program of the communication manager 500, compare the downloaded file, manage the user, test PCBA, test the finished product, query the test report, test the serial port test mode, and send the control command of the serial port test mode of RS232, RS422, RS485 to the serial port controller 300.
The automatic serial port communication mode switching system of the present application may apply the above automatic serial port communication mode switching method, and simultaneously realize serial port pair test work of at least one communication manager 500, and its working process is as follows:
each communication manager 500 receives the test command issued by the automatic test software of the terminal 100, then performs the internal test function of the communication manager 500, separates the serial port test mode information, and when the communication manager 500 needs to test the RS232, RS422 and RS485 three-in-one communication mode, firstly sends configuration information such as the RS232 serial port test communication mode and the number of serial port interfaces to be connected by the communication manager 500 to the serial port controller 300 with a fixed IP address through the switch 200. After receiving the data sent by the communication manager 500, the serial port controller 300 allocates and selects which interface the serial port switching module 400 is located according to the serial port number, configures the serial port RS232 communication mode test, sends the serial port switching module 400 with the serial port RS232 communication mode test command data, and switches the two serial port to serial port signal lines into the RS232 communication mode circuit signal by the internal relay of the serial port switching module 400. If the serial port controller 300 completes the serial port RS232 communication mode sending command, then returns the serial port communication mode configuration success data to the communication manager 500, which indicates that the circuit signal switching has been completed, the communication manager 500 may test the serial port, and the communication manager 500 program tests serial port information such as different baud rates, check bits, stop bits, etc. of the RS232 serial port, and the communication manager 500 marks the test result after the RS232 communication mode is completed.
The communication manager 500 then sends the serial port RS422 communication mode test and configuration information such as the number of serial ports to which the communication manager 500 is connected to the serial port controller 300 with a fixed IP address through the switch 200. After receiving the data sent by the communication manager 500, the serial port controller 300 allocates and selects the interface to which the serial port switching module 400 is located according to the serial port number, configures the serial port RS422 communication mode test, sends the serial port switching module 400 with the serial port RS422 communication mode test command data, and switches the two serial port to serial port signal lines into the RS422 communication mode circuit signal by the internal relay of the serial port switching module 400. If the serial port controller 300 completes the serial port RS422 communication mode to send a command, then returns the serial port mode configuration success data to the communication manager 500, which indicates that the circuit signal switching has been completed, the communication manager 500 may test serial port pair testing by the communication manager 500 program, the communication manager 500 may test serial port information such as different baud rates, check bits, stop bits, etc. of the RS422 serial port, and the communication manager 500 marks the test result after the completion of the RS422 communication mode.
The RS232 and RS422 communication mode test is completed, and the communication manager 500 performs the serial port RS485 communication mode test in the same manner. After the communication manager 500 completes the test work of the three-in-one communication modes of RS232, RS422 and RS485, the serial port test result is uploaded to the terminal 100 for storage. The serial port automatic opposite measurement can realize the simultaneous test of the communication manager 500, and can only test one, two or three simultaneous test functions in three modes of RS232, RS422 and RS 485.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (1)
1. An automatic serial port communication mode switching system, comprising:
a terminal;
the switch is in communication connection with the terminal;
the serial port controller is in communication connection with the switch;
the serial port switching module is connected with the serial port controller; the number of the serial port switching modules is at least 1;
the communication manager is connected with the serial port switching module and is in communication connection with the switch; the communication manager comprises a serial port pair to be tested, wherein the serial port pair to be tested comprises a first serial port and a second serial port which are connected to the same serial port switching module;
the terminal is used for installing automatic test software of the communication manager, and the automatic test software is used for sending a test control command to the communication manager and receiving a test state result of the communication manager; the communication manager is used for establishing connection with the serial port controller according to the test control command and sending a communication mode and serial port switching path number to the serial port controller; the communication mode is a communication mode to be switched by the serial port pair to be tested; the serial port controller is used for selecting serial port switching modules corresponding to the serial port switching paths and sending circuit switching commands to the selected serial port switching modules; the circuit switching command is used for indicating the selected serial port switching module to switch the communication mode into the communication mode.
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| CN111949456A (en) * | 2020-07-14 | 2020-11-17 | 许继集团有限公司 | Serial port protocol automatic test system and method based on configuration updating |
| CN114089086B (en) * | 2021-10-29 | 2024-05-14 | 深圳市康必达控制技术有限公司 | Communication manager testing equipment and testing method thereof |
| CN114003455B (en) * | 2021-12-31 | 2022-04-08 | 广州鲁邦通物联网科技股份有限公司 | Serial port automatic test system, interface automatic test method and test platelet |
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