CN106815162B - The inter-integrated circuit means of communication and expanding unit - Google Patents
The inter-integrated circuit means of communication and expanding unit Download PDFInfo
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- CN106815162B CN106815162B CN201510848869.6A CN201510848869A CN106815162B CN 106815162 B CN106815162 B CN 106815162B CN 201510848869 A CN201510848869 A CN 201510848869A CN 106815162 B CN106815162 B CN 106815162B
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- control module
- main control
- miscommunication
- inter
- integrated circuit
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Classifications
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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
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0766—Error or fault reporting or storing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0766—Error or fault reporting or storing
- G06F11/0787—Storage of error reports, e.g. persistent data storage, storage using memory protection
Abstract
A kind of inter-integrated circuit means of communication, by an expanding unit with a main control module and an inter-integrated circuit bus, and an at least slave module executes, the inter-integrated circuit means of communication are that the main control module transmits a data, via the inter-integrated circuit bus to the slave module, when the data transmission fails, the main control module generates a corresponding miscommunication code, and judge whether that executing a data retransmits according to the miscommunication code, it is retransmitted if being judged as and executing the data, then the main control module judges whether a re-transmission count value reaches a default number of retransmissions, if reaching, then the main control module executes itself resetting, and record a miscommunication event, so as to improving the success rate of communication, and then promote communication quality.
Description
Technical field
The invention relates to a kind of communication transmission methods, particularly relate to a kind of inter-integrated circuit means of communication.
Background technique
In inter-integrated circuit (Inter-Integrated Circuit, I2C) bus communication system, usually having one is
Main control module, such as microcontroller, remaining multiple periphery is slave module, such as memory, hard disk, system temperature sensor
Deng.Main control module actively transmits data to each slave module via I2C bus, or reads the data of each slave module, so as to
The parameter function state for monitoring each slave module, increases the safety of system, and facilitates management.
But since I2C bus communication system application is more various, I2C bus is be easy to cause to be interfered, such as circuit is dry
It disturbs, so that various mistakes occur for the data transmission between main control module and each slave module, at this point, main control module stops data
It sendes or receive, so as to cause Communications failure.
Summary of the invention
Therefore, the purpose of the present invention is to provide a kind of inter-integrated circuit means of communication for improving communication success rate.
Then, the inter-integrated circuit means of communication of the present invention, are executed by an inter-integrated circuit communication system, and the inside is whole
Closing circuit communication system includes a main control module, an inter-integrated circuit bus, and an at least slave module, internal integration electricity
The road means of communication include a step (A), a step (B), a step (C), a step (D), a step (F) and a step (G).
The step (A) is that the main control module transmits a data, via the inter-integrated circuit bus to the slave module.
The step (B) is when the data transmission fails, which generates a corresponding miscommunication code.
The step (C) is that the main control module judges whether to execute data re-transmission according to the miscommunication code.
The step (D) if be the judging result of step (C) be it is yes, the main control module judge one re-transmission count value whether reach
To a default number of retransmissions.
The step (F) is if being the judging result of step (D) is yes, itself resetting of main control module execution one.
The step (G) is the main control module according to the miscommunication code, records a miscommunication event.
In addition, another object of the present invention is to provide a kind of expanding units for improving communication success rate.
Then, expanding unit of the present invention is electrically connected an at least slave module, and includes an inter-integrated circuit bus, and
One main control module.
The main control module transmits a data, via the inter-integrated circuit bus to the slave module, when the data transmission
Failure, the main control module generate a corresponding miscommunication code, and are judged whether to execute a data according to the miscommunication code
Re-transmission retransmits if being judged as and executing the data, which judges whether a re-transmission count value reaches a default re-transmission time
Number, if judgement reaches, which executes itself resetting, and according to the miscommunication code, records a miscommunication thing
Part.
Effect of the invention is: the main control module can execute the data and retransmit when the data transmission fails, and
When reaching the default number of retransmissions, records the miscommunication event and give user and learn, communicated so as to increasing with the slave module
Success rate, and then promote communication quality.
[Detailed description of the invention]
Fig. 1 is an inter-integrated circuit communication system used in the inter-integrated circuit means of communication of the present invention；And
Fig. 2 is an embodiment of the inter-integrated circuit means of communication of the present invention.
[specific embodiment]
Refering to fig. 1, the one of inter-integrated circuit (Inter-Integrated Circuit, the I2C) means of communication of the present invention
Embodiment is executed by an inter-integrated circuit communication system 1, which includes an expanding unit
(Expander) 11, and plural slave module (slave module) 12.
The expanding unit 11 includes a main control module (master module) 111, one inter-integrated circuit bus 112, one
Flash memory (Flash ROM) 113 and a non-volatility memorizer 114.The main control module 111 for example can be with a microcontroller
Device is implemented, which has a tandem data line (serial data line, SDA) and a tandem
Clock pulse line (serial clock line, SCL), the main control module 111 via the internal integration bus 112 the serial data
Line and the tandem clock pulse line carry out communication transfer with the grade slave modules 12 each other.The flash memory 113 stores a program
Code reads for the main control module 111 and executes the functions such as control, counting, re-transmission, resetting.The non-volatility memorizer 114 then can
For recording a miscommunication event.
Each slave module 12 is electrically connected to the inter-integrated circuit bus 112 of the expanding unit 11, and for example can be with one
Temperature sensor, an electronics formula of erasing can make carbon copies any one of the read only memory, a power-supply unit to implement.
Referring to Fig.2, the embodiment of the inter-integrated circuit means of communication of the present invention is in the inter-integrated circuit communication system 1
Middle implementation, each step of this method described further below.
In step, which transmits a data, via the inter-integrated circuit bus 112 to the subordinate mould
Block 12.And the main control module 111 stores a default number of retransmissions.
In stepb, when the data transmission fails, which generates a corresponding miscommunication code.In detail
For, which, which is (Mutex timeout) when one main control module mutual exclusion of instruction is overflow, a main control module is unexpected interrupts
(Unexpected interrupt source), a slave module reception data failure (Data NACK), a main control module are mutual
Denounce overflow Shi Huifu (Mutex timeout recovered) and a slave module address dont answer (slave address
One of NACK).
In step C, which judges whether that executing a data retransmits according to the miscommunication code, if judgement
It is not required to execute data re-transmission, that is, is directly entered step G.Furtherly, when the miscommunication code overflows for the main control module mutual exclusion
When, the main control module it is unexpected interrupt, the slave module receive data failure one of when, the main control module 111 judgement
Execute data re-transmission；When the miscommunication code overflows Shi Huifu, the slave module address dont answer for the main control module mutual exclusion,
The main control module 111 judgement does not execute data re-transmission.
In step D, if the judging result of step C be it is yes, the main control module 111 judge one re-transmission count value whether reach
To a default number of retransmissions.
In step E, if the judging result of step D be it is no, the main control module 111 by the re-transmission count value increase, and
Return step A, wherein return step A is to indicate that the main control module 111 retransmits the data.And in the present embodiment, the master control
Module 111 is that the re-transmission count value is increased by one, and return step A.
In step F, if the judging result of step D is yes, itself resetting (reset) of the main control module 111 execution one,
And enter step G.That is, the miscommunication code still exists after the main control module 111 executes data re-transmission, and
When having reached the default number of retransmissions, which carries out itself resetting.
In step G, if the judging result of step C is no, and after step F carries out itself resetting, the master control
Module 111 records a miscommunication event in the non-volatility memorizer 114, wherein the communication is wrong according to the miscommunication code
Part of causing delay includes going through for the number of retransmissions value corresponding to the miscommunication code and the miscommunication code and this itself resetting
Records of the Historian record.Specifically, when the miscommunication code is the excessive Shi Huifu of the main control module mutual exclusion, the slave module address dont answer
One of them when, the main control module 111 judgement does not execute data re-transmission and is recorded as and only accordingly by the miscommunication code
The miscommunication event is in the non-volatility memorizer 114.In addition, the main control module 111 is because the re-transmission count value reaches this
Default number of retransmissions, and after carrying out itself resetting, it also will record into the miscommunication event in the non-volatility memorizer
114.In this way, user can learn the miscommunication code of 111 data transmission of main control module failure by the miscommunication event,
And learn data number of retransmissions corresponding to the miscommunication code, and whether by information such as itself resettings.
To sum up explanation is it is found that the inter-integrated circuit means of communication of the present invention, can make the main control module 111 in data transmission
When failure, by determining whether to retransmit with whether number of retransmissions reaches the upper limit, the technology of cooperation resetting main control module 111 makes
With can improve the success rate of the main control module 111 communication, so that entirety I2C communication quality becomes more preferably, and be recorded as this and lead to
News error event is learnt for user, so can reach the purpose of the present invention really.
A specific embodiment of the invention and embodiment are elaborated above in conjunction with attached drawing, but cannot with restriction
The scope of the present invention, the made modification and transformation in scope of the present invention patent, all should belong to the invention patent range
It is interior.
Claims (8)
1. a kind of inter-integrated circuit means of communication are executed by an inter-integrated circuit communication system, the inter-integrated circuit is logical
News system includes a main control module, an inter-integrated circuit bus, and an at least slave module, it is characterised in that: the inside is whole
Closing the circuit means of communication includes:
(A) main control module transmits a data, via the inter-integrated circuit bus to the slave module；
(B) when the data transmission fails, which generates a corresponding miscommunication code；
(C) main control module judges whether that executing a data retransmits according to the miscommunication code；
(D) if the judging result of step (C) be it is yes, which judges whether a re-transmission count value reaches one and default retransmit
Number；
(F) if the judging result of step (D) is yes, itself resetting of main control module execution one；And
(G) main control module records a miscommunication event, which includes the communication according to the miscommunication code
The historical record of the re-transmission count value corresponding to error code and the miscommunication code and itself resetting.
2. the inter-integrated circuit means of communication described in accordance with the claim 1, it is characterised in that: the inter-integrated circuit communication side
Method also includes:
(E) if the judging result of step (D) be it is no, which increases the re-transmission count value, and return step (A).
3. the inter-integrated circuit means of communication described in accordance with the claim 1, it is characterised in that: if the judging result of step (C)
Be it is no, then proceed directly to step (G).
4. the inter-integrated circuit means of communication described in accordance with the claim 1, it is characterised in that: in the step (A), the master control mould
Block more stores the default number of retransmissions, and in the step (B), when which is that one main control module mutual exclusion of instruction is overflow, one
Main control module is unexpected to be interrupted, a slave module receives data failure, a main control module mutual exclusion is overflow Shi Huifu and a slave module
One of address dont answer, and in step (C), when which is judged as that the main control module mutual exclusion is overflow, the master control
Module is unexpected to be interrupted when receiving one of data failure with the slave module, and main control module judgement executes the data weight
It passes.
5. a kind of expanding unit is electrically connected an at least slave module, it is characterised in that: the device includes:
One inter-integrated circuit bus；And
One main control module transmits a data, via the inter-integrated circuit bus to the slave module, when the data transmission loses
It loses, which generates a corresponding miscommunication code, and is judged whether to execute a data weight according to the miscommunication code
It passes, is retransmitted if being judged as and executing the data, which judges whether a re-transmission count value reaches a default number of retransmissions,
If judgement reaches, which executes itself resetting, and according to the miscommunication code, records a miscommunication event,
The miscommunication event includes re-transmission count value corresponding to the miscommunication code and the miscommunication code and this itself
The historical record of resetting.
6. expanding unit according to claim 5, it is characterised in that: the expanding unit also includes:
One non-volatility memorizer records the miscommunication event for the main control module according to the miscommunication code.
7. expanding unit according to claim 5, it is characterised in that: if the main control module judges according to the miscommunication code
It is retransmitted not execute the data, then the main control module records the miscommunication event according to the miscommunication code.
8. expanding unit according to claim 5, it is characterised in that: the miscommunication code is one main control module mutual exclusion of instruction
Overflow when, a main control module it is unexpected interrupt, a slave module receive data failure, a main control module mutual exclusion overflow Shi Huifu and one
One of slave module address dont answer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848869.6A CN106815162B (en) | 2015-11-27 | 2015-11-27 | The inter-integrated circuit means of communication and expanding unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848869.6A CN106815162B (en) | 2015-11-27 | 2015-11-27 | The inter-integrated circuit means of communication and expanding unit |
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| Publication Number | Publication Date |
|---|---|
| CN106815162A CN106815162A (en) | 2017-06-09 |
| CN106815162B true CN106815162B (en) | 2019-08-16 |
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| CN201510848869.6A Active CN106815162B (en) | 2015-11-27 | 2015-11-27 | The inter-integrated circuit means of communication and expanding unit |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135948A (en) * | 2010-01-25 | 2011-07-27 | 安国国际科技股份有限公司 | Inter-integrated circuit/serial peripheral interface master control interface circuit structure |
| CN102567133A (en) * | 2011-12-31 | 2012-07-11 | 广州视声电子科技有限公司 | Method for implementing communication by means of interruption I2C (inter to integrated circuit) devices and I2C system |
| CN203733110U (en) * | 2013-12-18 | 2014-07-23 | 明瑞电子(成都)有限公司 | Internal integration circuit and control circuit thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7676621B2 (en) * | 2003-09-12 | 2010-03-09 | Hewlett-Packard Development Company, L.P. | Communications bus transceiver |
-
2015
- 2015-11-27 CN CN201510848869.6A patent/CN106815162B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135948A (en) * | 2010-01-25 | 2011-07-27 | 安国国际科技股份有限公司 | Inter-integrated circuit/serial peripheral interface master control interface circuit structure |
| CN102567133A (en) * | 2011-12-31 | 2012-07-11 | 广州视声电子科技有限公司 | Method for implementing communication by means of interruption I2C (inter to integrated circuit) devices and I2C system |
| CN203733110U (en) * | 2013-12-18 | 2014-07-23 | 明瑞电子(成都)有限公司 | Internal integration circuit and control circuit thereof |
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| CN106815162A (en) | 2017-06-09 |
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