CN103856411B - Switching system connected with UART interface of router - Google Patents
Switching system connected with UART interface of router Download PDFInfo
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- CN103856411B CN103856411B CN201210510109.0A CN201210510109A CN103856411B CN 103856411 B CN103856411 B CN 103856411B CN 201210510109 A CN201210510109 A CN 201210510109A CN 103856411 B CN103856411 B CN 103856411B
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- 230000005611 electricity Effects 0.000 claims description 5
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- 238000011161 development Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 3
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Abstract
The invention discloses a switching system connected with a UART interface of a router. The router comprises a pin header with five pins. The switching system comprises a switch control circuit and a female header. The UART interface is connected with the switch control circuit. The switch control circuit comprises a first access and a second access, and is connected with the pin header through the first access. The switch control circuit is used for detecting whether the pin header is in inserted connection with the female header or not, if yes, the switch control circuit is switched to the first access, and the UART interface transmits a start message of the router through the first access by serving as an adjusting port, and if not, the switch control circuit is switched to the second access. The UART interface can be switched between the adjusting port and a data transmission communication port, it is unnecessary to change the design scheme of a main chip of the router, development cost is lowered, development period is shortened, and development risks are reduced.
Description
Technical field
The present invention relates to the switching system that a kind of UART interface of router is connected, more particularly to one kind can be by opening
Close the UART interface of the router that control circuit switches over UART interface between debugging port and data transfer port
The switching system of connection.
Background technology
UART（Universal Asynchronous Receive/dispensing device）It is a kind of widely used short distance serial transmission interface, generally exists
Can be designed to debug port in Design of Home Gateway, home gateway is provided in the terminal in subscriber household, be connection telecommunications
The equipment of network and subscriber household network, realizes exchanging for household internal information and family's external information, and undoubtedly family networks
Purpose.It is the characteristics of home gateway at present：
Existing market main flow router only supports routing function mostly, and the UART interface of its master chip is generally designed to
The debugging port of unitary function, form is single, function is simple, and the demand in market is can not meet gradually.And with network
The fast development and fusion of technology, router also needs to be endowed more functions at leisure, except traditional Network Access Point road
It is outer, it is necessary to IPTV by function（IPTV）, band SIM（Client identification module, also known as subscriber identification card）Note
Voice call function of volume etc..Now it is accomplished by switching the function of UART interface, it is necessary to by UART interface from traditional debugging end
Mouth switch to data transfer communications mouth go access SIM realize voice register, and this when be in the prior art cannot
Same UART interface is shared, can there is a problem of serial ports contention, if the use of same UART interface being as debugging end
Mouthful mouthful can cause that device program collapses as data transfer communications again because interface can not process simultaneously two kinds it is different
Communication pattern.
And be required for reselecting high-end chip in the prior art and be designed come the master chip again to router, this meeting
Huge software development and hardware development work and R＆D risk is brought, certainly, cost also can be very huge.
The content of the invention
The technical problem to be solved in the present invention be realized in the prior art to overcome UART interface function switching, it is necessary to
It is designed come the master chip again to router by reselecting high-end chip, causes to bring huge work and research and development wind
The defect of danger, there is provided one kind can be being debugged between port and data transfer port UART interface by ON-OFF control circuit
The switching system of the UART interface connection of the router of switching.
The present invention is to solve above-mentioned technical problem by following technical proposals：
The invention provides the switching system that a kind of UART interface of router is connected, the router includes that one has five to draw
Row's pin of pin, its feature is that the switching system also includes an ON-OFF control circuit and a row mother matched with row's pin,
The UART interface is connected with the ON-OFF control circuit, and the ON-OFF control circuit includes one first path and an alternate path,
And be connected with the data transmit-receive pin of row's pin by first path, the ON-OFF control circuit is used to detect row's pin and be somebody's turn to do
Whether mother row plugs, if so, then the ON-OFF control circuit switches to first path, and the UART interface as debugging port
By the startup information of first tunnel router, if it is not, then the ON-OFF control circuit switches to the alternate path.
Existing router all includes the row's pin with five pins, by the data transmit-receive pin and UART interface phase of arranging pin
Connection realizes UART interface, as debugging port, the startup information record of the router to be got off first, is produced in router
After product start completion, user can recall the startup information and enter by UART interface at any time when needing using software instruction
Row is checked, and user can also be debugged by UART interface to router product, and these belong to well known in the art
Technology, just repeats no more herein.
And the switching system also includes that the ON-OFF control circuit and the row are female, the ON-OFF control circuit can detect the row
Whether pin plugs with row mother, if so, then the ON-OFF control circuit switches to first path, the UART interface can just be made
It is debugging port by the startup information of first tunnel router, if it is not, then the ON-OFF control circuit is just switched to
The alternate path, then by the alternate path connect a communication module, such as display screen, printer and other can be operated in
The application of function of UART serial communication modes, the UART interface can serve as data transfer communications mouthful and control electricity by the switch
Road carries out data interaction with the communication module.
Therefore, by the switching system, it becomes possible to realize by UART interface debugging port and data transfer port it
Between switch over, and the design of router master chip need not be changed, reduce development cost and construction cycle, reduce
The risk of exploitation.
It is preferred that the router also includes a FLASH（Flash memory）, when the ON-OFF control circuit is detected as no, should also
Start information Store in the FLASH.
When the ON-OFF control circuit is detected as no, the ON-OFF control circuit switches to the alternate path, the UART interface
Communicated with communication module by the ON-OFF control circuit as data transfer communications mouth or initialized communication module, this
When UART interface cannot just be re-used as debugging port record the startup information.And a LOG is at this moment then marked off in the FLASH
（Daily record）Subregion deposits all of startup information, and when the female grafting non-with row's pin of the row, the ON-OFF control circuit meeting
First path is switched back to, the UART interface also can again as debugging port, if now research staff needs to check startup
Information, it is possible to the startup information is recalled by the debugging port and is checked.
It is preferred that the router also includes a GPIO（Universal input/output）Interface, the GPIO interface is high level, and
The GPIO interface is connected by a first resistor with a power supply, and is connected with the ON-OFF control circuit by a first port
Connect；
The female vacant pin of the row is connected with grounding pin by a second resistance, when row's pin and row's parent phase grafting
When, the vacant pin is also connected by the first port with the ON-OFF control circuit；
The ON-OFF control circuit is used to detect whether the first port is low level, if so, then row's pin and row's parent phase
Grafting, if it is not, then row's pin and the female non-grafting of the row.
Five female pins of existing row be all mutually be not connected to, with respective function, and in the present invention will mother row
Vacant pin be connected by the second resistance with grounding pin, and when row's pin and when row's parent phase grafting, should
Vacant pin is also connected by the first port with the ON-OFF control circuit, and so the level of the first port is just changed into low electricity
It is flat.
Therefore, when row's pin and row's parent phase grafting, the first port is low level, and it is female with the row not to work as row's pin
During grafting, the level of the first port is identical with the GPIO interface, is high level, thus the ON-OFF control circuit by this
The height of the level of Single port just can interpolate that out whether row's pin plugs with row mother.
It is preferred that when the ON-OFF control circuit switches to the alternate path, the UART interface is used as data transfer communications
Mouth carries out data interaction with a communication module.
Positive effect of the invention is：The present invention can be realized UART interface in debugging port and data transfer
Switched between port, and the design of router master chip need not be changed, reduce development cost and exploitation
In the cycle, reduce the risk of exploitation.
Brief description of the drawings
Fig. 1 is the structural representation of the switching system of the UART interface connection of the router of a preferred embodiment of the invention
Figure.
Fig. 2 is the structural representation of mother row of a preferred embodiment of the invention.
Flow when Fig. 3 is the switching system work of the UART interface connection of the router of a preferred embodiment of the invention
Figure.
Specific embodiment
Present pre-ferred embodiments are given below in conjunction with the accompanying drawings, to describe technical scheme in detail.
It is as shown in Figure 1 the switching system that the UART interface 11 of router of the invention 1 is connected, the router 1 includes one
Row's pin 12, a FLASH13 and a GPIO interface 14 with five pins, the switching system also include an ON-OFF control circuit 2
And mother row 3 matched with row's pin.
The UART interface 11 is connected with the ON-OFF control circuit 2, the ON-OFF control circuit 2 include one first path 21 with
And an alternate path 22, and be connected with the data transmit-receive pin of row's pin 12 by first path 21.
The GPIO interface 14 is high level, and the GPIO interface 14 is by a 10K ohm of first resistor R1With a 3.3V
Power supply be connected, and be connected with the ON-OFF control circuit 2 by a first port.
The vacant pin of mother row 3 passes through a 1K ohm of second resistance R with grounding pin2It is connected, when row's pin 12
When being plugged with mother row 3, the vacant pin is also connected by the first port with the ON-OFF control circuit 2.
Five pins of existing mother row 3 be all mutually be not connected to, with respective function, and as shown in Fig. 2 in this hair
In bright, the vacant pin and grounding pin that will arrange female 3 pass through second resistance R2It is connected, and when row's pin 12 and the row are female
3 when plugged, and the vacant pin is also connected by the first port with the ON-OFF control circuit 2, so due to ground connection,
The level of the first port is just changed into low level.
Therefore, when row's pin 12 and mother row 3 plug, the first port is low level, and works as row's pin 12 and be somebody's turn to do
During 3 non-grafting of mother row, the level of the first port is identical with the GPIO interface 14, is high level, so that switch control electricity
The height of the level that road 2 passes through the first port just can interpolate that out whether row's pin 12 plugs with mother row 3.
The ON-OFF control circuit 2 is by detecting whether the first port is low level, if so, then row's pin 12 is female with the row
3 plug, and now the ON-OFF control circuit 2 just switches to first path 21, and the UART interface 11 just can be used as debugging end
Mouth transmits the startup information of the router 1 by first path 21, if it is not, then row's pin 12 and mother row 3 just non-grafting, this
When the ON-OFF control circuit 2 switch to the alternate path 22, then a communication module is connected by the alternate path 22, such as show
Screen, printer and other can be operated in the application of function of UART serial communication modes, the UART interface 11 can serve as
Data transfer communications mouthful carry out data interaction by the ON-OFF control circuit 2 and the communication module.
And when the ON-OFF control circuit 2 is detected as no, the ON-OFF control circuit 2 switches to the alternate path 22, should
UART interface 11 is communicated or is initialized with communication module as data transfer communications mouthful by the ON-OFF control circuit 2
Communication module, now UATR interfaces 11 cannot just be re-used as debugging port record the startup information.And at this moment then in the FLASH13
In mark off a LOG subregion and deposit all of startup information, and when the row female 12 is with row's 3 non-grafting of pin, this is opened
Closing control circuit 2 can switch back to first path 21, and the UART interface 11 also can again as debugging port, if now researched and developed
Personnel need to check startup information, it is possible to recall the startup information by the debugging port and checked.
And user recalls the startup information and is looked into by UART interface 11 at any time when needing using software instruction
See, and user can also be debugged by UART interface 11 to the product of router 1, and these belong to skill well known in the art
Art, just repeats no more herein.
As shown in figure 3, when the connection using the switching system to the UART interface 11 of router 1 is switched over, specifically
Workflow is as follows：
Electricity on step 100, the product of router 1, the ON-OFF control circuit 2 detects whether the first port is low level,
If so, step 101 is then performed, if it is not, then performing step 102.
Step 101, the ON-OFF control circuit 2 switch to first path 21, and the UART interface 11 is led to as debugging port
The startup information that first path 21 transmits the router 1 is crossed, then terminates flow.
Step 102, the ON-OFF control circuit 2 switch to the alternate path 22, then are led to by the alternate path 22 connection one
Letter module, the UART interface 11 carries out data as data transfer communications mouthful by the ON-OFF control circuit 2 and the communication module
Interaction, then terminates flow.
Although the foregoing describing specific embodiment of the invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of principle of the invention and essence, various changes or modifications can be made to these implementation methods, but these are changed
Protection scope of the present invention is each fallen within modification.
Claims (3)
1. the switching system that a kind of UART interface of router is connected, the router includes row's pin with five pins, and it is special
Levy and be, the switching system also includes that an ON-OFF control circuit and a row matched with row's pin are female, the UART interface with
The ON-OFF control circuit is connected, the ON-OFF control circuit include one first path and an alternate path, and by this first
Path is connected with the data transmit-receive pin of row's pin, and the ON-OFF control circuit is used to detect whether row's pin is mutually inserted with row mother
Connect, if so, then the ON-OFF control circuit switches to first path, and the UART interface first is led to as debugging port by this
The startup information of the router is transmitted on road, if it is not, then the ON-OFF control circuit switches to the alternate path, when the switch controls electricity
When road switches to the alternate path, the UART interface carries out data interaction as data transfer communications mouthful and a communication module.
2. switching system as claimed in claim 1, it is characterised in that the router also includes a FLASH, when switch control
When electric circuit inspection is no, also by the startup information Store to the FLASH.
3. switching system as claimed in claim 2, it is characterised in that the router also includes a GPIO interface, the GPIO connects
Mouthful it is high level, and the GPIO interface is connected by a first resistor with a power supply, and by a first port and the switch
Control circuit is connected；
The female vacant pin of the row is connected with grounding pin by a second resistance, when row's pin and row's parent phase grafting,
The vacant pin is also connected by the first port with the ON-OFF control circuit；
The ON-OFF control circuit is used to detect whether the first port is low level, if so, then row's pin and row's parent phase grafting,
If it is not, then row's pin and the female non-grafting of the row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510109.0A CN103856411B (en) | 2012-12-03 | 2012-12-03 | Switching system connected with UART interface of router |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210510109.0A CN103856411B (en) | 2012-12-03 | 2012-12-03 | Switching system connected with UART interface of router |
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| Publication Number | Publication Date |
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| CN103856411A CN103856411A (en) | 2014-06-11 |
| CN103856411B true CN103856411B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210510109.0A Active CN103856411B (en) | 2012-12-03 | 2012-12-03 | Switching system connected with UART interface of router |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105893301A (en) * | 2015-04-17 | 2016-08-24 | 乐视致新电子科技（天津）有限公司 | Control circuit of external functional module, external functional module and terminal device |
| CN105868140A (en) * | 2016-03-25 | 2016-08-17 | 乐视控股（北京）有限公司 | A mobile apparatus |
| CN106161146A (en) * | 2016-08-24 | 2016-11-23 | 上海斐讯数据通信技术有限公司 | A kind of route system antitheft startup method and device, router |
| CN106708731A (en) * | 2016-11-29 | 2017-05-24 | 郑州云海信息技术有限公司 | Equipment debugging switching method and CPLD (Complex Programmable Logic Device) |
| CN108429693A (en) * | 2018-02-09 | 2018-08-21 | 上海康斐信息技术有限公司 | A kind of router and its control method of debugging mouth and network interface multiplexing |
| CN109862583A (en) * | 2019-01-04 | 2019-06-07 | 新华三技术有限公司 | A kind of method and device reporting exception information |
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| KR100622246B1 (en) * | 2005-06-07 | 2006-09-18 | 엘지전자 주식회사 | Mobile phone having uart line switch |
| KR20060133399A (en) * | 2005-06-20 | 2006-12-26 | 엘지전자 주식회사 | Apparatus for debugging of embedded system |
| CN102323902A (en) * | 2011-07-25 | 2012-01-18 | 中国华录集团有限公司 | Debugging system with analog audio output device |
| CN102421010A (en) * | 2011-12-31 | 2012-04-18 | 四川长虹电器股份有限公司 | Software debugging system and method compatible to video graphics array (VGA) port input |
| CN102750252A (en) * | 2012-05-29 | 2012-10-24 | 惠州Tcl移动通信有限公司 | Circuit capable of reusing universal serial bus (USB)/ universal asynchronous receiver/ transmitter (UART) interfaces and electronic device using same |
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2012
- 2012-12-03 CN CN201210510109.0A patent/CN103856411B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| KR100622246B1 (en) * | 2005-06-07 | 2006-09-18 | 엘지전자 주식회사 | Mobile phone having uart line switch |
| KR20060133399A (en) * | 2005-06-20 | 2006-12-26 | 엘지전자 주식회사 | Apparatus for debugging of embedded system |
| CN102323902A (en) * | 2011-07-25 | 2012-01-18 | 中国华录集团有限公司 | Debugging system with analog audio output device |
| CN102421010A (en) * | 2011-12-31 | 2012-04-18 | 四川长虹电器股份有限公司 | Software debugging system and method compatible to video graphics array (VGA) port input |
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| CN103856411A (en) | 2014-06-11 |
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