CN109597778A - A kind of multi-channel serial port signal list interface duplex output system and its implementation - Google Patents
A kind of multi-channel serial port signal list interface duplex output system and its implementation Download PDFInfo
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- CN109597778A CN109597778A CN201811303195.1A CN201811303195A CN109597778A CN 109597778 A CN109597778 A CN 109597778A CN 201811303195 A CN201811303195 A CN 201811303195A CN 109597778 A CN109597778 A CN 109597778A
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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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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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
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/387—Information transfer, e.g. on bus using universal interface adapter for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
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Abstract
The present disclosure provides a kind of multi-channel serial port signal list interface duplex output system and its implementation, in the input terminal of switch control unit, the rs 232 serial interface signal of each module device output is accessed as rs 232 serial interface signal source, in the switching of switch control unit internal control output signal, the output of corresponding serial ports can be switched as needed.The output of switch control unit only has rs 232 serial interface signal all the way, it has been connected to serial port level chance-over circuit, the rs 232 serial interface signal that can be able to use the rs 232 serial interface signal level conversion that device exports to external serial ports docking device, final rs 232 serial interface signal is exported by individual interface, to realize the purpose of interface duplex.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of multi-channel serial port signal list interface duplex is defeated
System and implementation method out.
Background technique
With the development of the technologies such as computer server, computer server performance is higher and higher, and people are to calculating in addition
Machine server is integrated, integrated demand, realizes that the component of certain functions is also more and more for being integrated together.Equally
The function that extraneous various demands need computer server to be exported is also more and more, and rs 232 serial interface signal is wherein considerable
A kind of function.Have external serial port function needed for itself among these, also have that rs 232 serial interface signal exports to each device in machine inside
Detection information etc..
It is well known that integrated function is more, the signal for needing to export is more, the scale body of entire computer server
Product it is also more and more huger, serial ports equally arranges herein, and the external serial ports quantity of complete machine increases, and increases the size of complete machine, hence it is evident that with work as
The overall trend of lower computer server miniaturization contradicts.
Therefore, being demultiplexed into for interface alleviates this contradictory effective way, and the multiplexing of serial ports is wherein quite to weigh
The ring wanted.With needing the occasion of computer server difference serial port function more and more, such as notebook, server equipment
The limited situation of interface quantities or complete machine rear panel space such as external air plug under, if the rs 232 serial interface signal for needing externally to export at this time
Quantity is more, and such as CPU serial ports, BMC serial ports, microcontroller serial port etc. transmits the rs 232 serial interface signal of different function information, then needs to make more
Kind signal shares external interface such as air plug etc., which being capable of time-sharing multiplex under multi-channel serial port signal.By to more
The switching of road rs 232 serial interface signal realizes that the multiplexing of interface will be imperative.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide a kind of multi-channel serial port signal list interface duplex output system and
Its implementation provides a solution to alleviate the output of Multi-serial port signal with contradiction existing for machine volume.
The present invention to achieve the above object, is achieved through the following technical solutions: a kind of multi-channel serial port signal list interface duplex
Output system, comprising: multiple rs 232 serial interface signal sources, switch control unit, logic control element and external interface；The switching control
Unit be equipped with multiple input serial ports and an output serial ports, input serial ports pass through UART bus respectively with each rs 232 serial interface signal source
Connection；Output serial ports is connect with external interface, is exported for single channel UART；The logic control element and switch control unit connect
It connects, for selecting input Serial Port Line road and circuit switching signal being sent to switch control unit, control switch control unit is connect
After receiving circuit switching signal, the signal of selected input serial ports is exported by external interface.
Further, serial interface switching circuit is additionally provided in the switch control unit, output serial ports passes through serial interface switching circuit
It is connect with external interface, for believing the rs 232 serial interface signal level conversion of output to the serial ports that external serial ports docking device is able to use
Number.
Further, the logic control element includes: single-chip microcontroller and controlling terminal, the single-chip microcontroller and switch control unit
Connection, for sending the logic control signal for representing input Serial Port Line road serial number to switch control unit, single-chip microcontroller passes through BIOS
It is connect with controlling terminal, graphic interface software is equipped in controlling terminal, user inputs Serial Port Line road sequence by graphic interface software
Number carry out input serial ports selection.
Further, the single-chip microcontroller uses embedded controller.
Further, the logic control element includes: CPLD and controlling terminal, and CPLD is connect with switch control unit, is used
In sending the logic control signal for representing input Serial Port Line road serial number to switch control unit, CPLD passes through BIOS and controlling terminal
Connection, controlling terminal is interior to be equipped with graphic interface software, and user inputs Serial Port Line road serial number by graphic interface software and inputs
Serial ports selection.
Further, the logic control element includes key, and key is connect with switch control unit, and the key includes three
A button, for carrying out the output of low and high level, and the logic control that input string mouth line road serial number will be represented after three button combinations
Signal processed is sent to switch control unit.
Further, the quantity in the rs 232 serial interface signal source is not more than 8.
In addition, the present invention also provides one kind on the basis of above-mentioned multi-channel serial port signal list interface duplex output system
The implementation method of multi-channel serial port signal list interface duplex output system, includes the following steps:
Step 1: connecting multi-channel serial port signal list interface duplex output system, default UART1 output；
Step 2: judging whether to need to switch output, if so, step 3 is transferred to, if not, going to step 6；
Step 3: logic control element is written in input Serial Port Line road serial number by selection input serial ports；
Step 4: logic control element will input Serial Port Line road serial number and be converted to binary logic control signal and be sent to
Switch control unit；
Step 5: switch control unit determines input Serial Port Line road according to logic control signal；
Step 6: switch control unit exports the signal on determining input Serial Port Line road by external interface；
Step 7: signal goes to step 2 after exporting.
The prior art is compared, the beneficial effects of the invention are that: it is multiple that the present invention provides a kind of multi-channel serial port signal list interfaces
With output system and its implementation, in the input terminal of switch control unit, the rs 232 serial interface signal for accessing each module device output is made
The defeated of corresponding serial ports can be switched as needed in the switching of switch control unit internal control output signal for rs 232 serial interface signal source
Out.The output of switch control unit only has rs 232 serial interface signal all the way, has been connected to serial port level chance-over circuit, can export device
The rs 232 serial interface signal that rs 232 serial interface signal level conversion is able to use to external serial ports docking device, final rs 232 serial interface signal pass through individual interface
Output, to realize the purpose of interface duplex.
The switching of multichannel difference rs 232 serial interface signal is controlled by logic control element and is switched inside switch control unit, logic control
Unit receives the input Serial Port Line road serial number of user's confirmation, and is converted into binary logic control signal and is sent to switching
Control unit；Switch control unit switches input Serial Port Line road according to logic control signal, it is thus achieved that multi-channel serial port signal
Single interface duplex output.
It can be seen that compared with prior art, the present invention implementing with substantive distinguishing features outstanding and significant progress
Beneficial effect be also obvious.
Detailed description of the invention
Attached drawing 1 is the electrical diagram of the embodiment of the present invention one.
Attached drawing 2 is the electrical diagram of the embodiment of the present invention two.
Attached drawing 3 is flow chart of the method for the present invention.
Specific embodiment
It explains with reference to the accompanying drawing to a specific embodiment of the invention.
Embodiment one:
A kind of multi-channel serial port signal list interface duplex output system as shown in Figure 1, comprising: multiple rs 232 serial interface signal sources, switching control
Unit, logic control element and external interface processed；The switch control unit is equipped with multiple input serial ports and an output string
Mouthful, input serial ports is connect with each rs 232 serial interface signal source respectively by UART bus；Wherein, rs 232 serial interface signal source can be CPU debugging string
Message number, BMC detection rs 232 serial interface signal, serial port function signal of chip microcontroller etc..Output serial ports is connect with external interface, is used
It is exported in single channel UART；The logic control element is connect with switch control unit, for selecting input Serial Port Line road and by line
Road switching signal is sent to switch control unit, after control switch control unit receives circuit switching signal, by selected input
The signal of serial ports is exported by external interface.Serial interface switching circuit is additionally provided in switch control unit, output serial ports passes through serial ports
Conversion circuit is connect with external interface, for the rs 232 serial interface signal level conversion of output to external serial ports docking device to be able to use
Rs 232 serial interface signal.
Logic control element includes: single-chip microcontroller and controlling terminal, and the single-chip microcontroller is connect with switch control unit, for
Switch control unit sends the logic control signal for representing input Serial Port Line road serial number, and single-chip microcontroller is connected by BIOS and controlling terminal
It connects, graphic interface software is equipped in controlling terminal, user inputs Serial Port Line road serial number by graphic interface software and carries out input string
Mouth selection.Wherein, EC(embedded controller can be used in single-chip microcontroller), CPLD(Complex Programmable Logic Devices can also be used) replace
It changes, either uses EC or CPLD chip, configured by BIOS, pass through graphic interface software realization serial ports in controlling terminal
The switching control of signal.Common computer can be used in the controlling terminal.
Embodiment two:
A kind of multi-channel serial port signal list interface duplex output system as shown in Figure 2, comprising: multiple rs 232 serial interface signal sources, switching control
Unit, logic control element and external interface processed；The switch control unit is equipped with multiple input serial ports and an output string
Mouthful, input serial ports is connect with each rs 232 serial interface signal source respectively by UART bus；Wherein, rs 232 serial interface signal source can be CPU debugging string
Message number, BMC detection rs 232 serial interface signal, serial port function signal of chip microcontroller etc..Output serial ports is connect with external interface, is used
It is exported in single channel UART；The logic control element is connect with switch control unit, for selecting input Serial Port Line road and by line
Road switching signal is sent to switch control unit, after control switch control unit receives circuit switching signal, by selected input
The signal of serial ports is exported by external interface.Serial interface switching circuit is additionally provided in switch control unit, output serial ports passes through serial ports
Conversion circuit is connect with external interface, for the rs 232 serial interface signal level conversion of output to external serial ports docking device to be able to use
Rs 232 serial interface signal.
Logic control element includes key, and key is connect with switch control unit, and the key includes three buttons, is used for
The output of low and high level is carried out, and the logic control signal for representing input string mouth line road serial number after three button combinations is sent to
Switch control unit.Button by common key circuit can realize " 0 ", " 1 " input, three tunnel button combinations can realize " 000 ",
" 001 " ... " 111 " eight kinds of logical signal inputs, can at most respectively correspond the switching of 8 road rs 232 serial interface signals of control, realize 8 roads string
Message number passes through single interface timesharing output.User passes through the i.e. changeable desired signal source of hardware button.
Through the foregoing embodiment as it can be seen that the present invention realizes Multi-serial port signal list interface duplex, it is effectively relieved behind complete machine
The problem of plate insufficient space.
In addition, it is more that the present invention also provides one kind above-mentioned based in multi-channel serial port signal list interface duplex output system
The implementation method of road rs 232 serial interface signal list interface duplex output system, as shown in figure 3, including the following steps:
Step 1: connecting multi-channel serial port signal list interface duplex output system, default UART1 output；
Step 2: judging whether to need to switch output, if so, step 3 is transferred to, if not, going to step 6；
Step 3: logic control element is written in input Serial Port Line road serial number by selection input serial ports；
Step 4: logic control element will input Serial Port Line road serial number and be converted to binary logic control signal and be sent to switching
Control unit；
Step 5: switch control unit determines input Serial Port Line road according to logic control signal；
Step 6: switch control unit exports the signal on determining input Serial Port Line road by external interface；
Step 7: signal goes to step 2 after exporting.
With reference to the drawings and specific embodiments, the invention will be further described.It should be understood that these embodiments are merely to illustrate
The present invention rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, this field
Technical staff can make various changes or modifications the present invention, and such equivalent forms equally fall within range defined herein.
Claims (8)
1. a kind of multi-channel serial port signal list interface duplex output system characterized by comprising multiple rs 232 serial interface signal sources, switching
Control unit, logic control element and external interface；
The switch control unit is equipped with multiple input serial ports and an output serial ports, and input serial ports is distinguished by UART bus
It is connect with each rs 232 serial interface signal source；Output serial ports is connect with external interface, is exported for single channel UART；
The logic control element is connect with switch control unit, for selecting input Serial Port Line road and sending out circuit switching signal
It send to switch control unit, after control switch control unit receives circuit switching signal, the signal of selected input serial ports is led to
Cross external interface output.
2. multi-channel serial port signal list interface duplex output system according to claim 1, it is characterised in that: the switching control
Serial interface switching circuit is additionally provided in unit processed, output serial ports is connect by serial interface switching circuit with external interface, for that will export
Rs 232 serial interface signal level conversion to the rs 232 serial interface signal that is able to use of external serial ports docking device.
3. multi-channel serial port signal list interface duplex output system according to claim 1, which is characterized in that the logic control
Unit processed includes: single-chip microcontroller and controlling terminal, and the single-chip microcontroller is connect with switch control unit, for sending out to switch control unit
The logic control signal for representing input Serial Port Line road serial number is sent, single-chip microcontroller is connect by BIOS with controlling terminal, in controlling terminal
Equipped with graphic interface software, user inputs Serial Port Line road serial number by graphic interface software and carries out input serial ports selection.
4. multi-channel serial port signal list interface duplex output system according to claim 3, which is characterized in that the single-chip microcontroller
Using embedded controller.
5. multi-channel serial port signal list interface duplex output system according to claim 1, which is characterized in that the logic control
Unit processed includes: CPLD and controlling terminal, and CPLD is connect with switch control unit, is represented for sending to switch control unit
The logic control signal of Serial Port Line road serial number is inputted, CPLD is connect by BIOS with controlling terminal, and figure is equipped in controlling terminal
Interface software, user input Serial Port Line road serial number by graphic interface software and carry out input serial ports selection.
6. multi-channel serial port signal list interface duplex output system according to claim 1, which is characterized in that the logic control
Unit processed includes key, and key is connect with switch control unit, and the key includes three buttons, for carrying out low and high level
Output, and the logic control signal that input string mouth line road serial number is represented after three button combinations is sent to switch control unit.
7. multi-channel serial port signal list interface duplex output system according to claim 1, it is characterised in that: the serial ports letter
The quantity in number source is not more than 8.
8. a kind of realization side of multi-channel serial port signal list interface duplex output system described in -7 any one according to claim 1
Method, which comprises the steps of:
Step 1: connecting multi-channel serial port signal list interface duplex output system, default UART1 output；
Step 2: judging whether to need to switch output, if so, step 3 is transferred to, if not, going to step 6；
Step 3: logic control element is written in input Serial Port Line road serial number by selection input serial ports；
Step 4: logic control element will input Serial Port Line road serial number and be converted to binary logic control signal and be sent to
Switch control unit；
Step 5: switch control unit determines input Serial Port Line road according to logic control signal；
Step 6: switch control unit exports the signal on determining input Serial Port Line road by external interface；
Step 7: signal goes to step 2 after exporting.
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| CN201811303195.1A CN109597778A (en) | 2018-11-02 | 2018-11-02 | A kind of multi-channel serial port signal list interface duplex output system and its implementation |
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Cited By (5)
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| CN111078603A (en) * | 2019-10-30 | 2020-04-28 | 苏州浪潮智能科技有限公司 | Method and system for controlling access of internal serial port of multi-node equipment |
| CN113268100A (en) * | 2021-04-29 | 2021-08-17 | 中科慧远视觉技术(北京)有限公司 | Single-port multi-level input-output circuit and method |
| CN113868163A (en) * | 2021-09-07 | 2021-12-31 | 深圳市国赛生物技术有限公司 | Interface multiplexing device and control method of interface multiplexing device |
| WO2023082184A1 (en) * | 2021-11-12 | 2023-05-19 | 华为技术有限公司 | Serial port switching apparatus and method, and device, storage medium, system and vehicle |
| CN117609145A (en) * | 2024-01-24 | 2024-02-27 | 苏州元脑智能科技有限公司 | Serial port protection circuit, switch, server, protection method and related components |
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Application publication date: 20190409 |