CN103885910B - The method that many equipment carry out IIC communications under holotype - Google Patents
The method that many equipment carry out IIC communications under holotype Download PDFInfo
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- CN103885910B CN103885910B CN201210561022.6A CN201210561022A CN103885910B CN 103885910 B CN103885910 B CN 103885910B CN 201210561022 A CN201210561022 A CN 201210561022A CN 103885910 B CN103885910 B CN 103885910B
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- 238000004891 communication Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 65
- 230000004044 response Effects 0.000 claims description 10
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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
- G06F13/42—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
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4072—Drivers or receivers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0016—Inter-integrated circuit (I2C)
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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- Small-Scale Networks (AREA)
Abstract
The system that a kind of many equipment carry out IIC communications under holotype, including the multiple main equipments being connected on an iic bus and a slave unit, each main equipment only has holotype in IIC communications, slave unit only has slave pattern in IIC communications, and each main equipment can read and write the slave unit by IIC communication protocols.Each master polls slave unit, when one of main equipment needs to send data to another main equipment, one of main equipment sends the data to the slave unit by iic bus, data will be temporarily stored into the slave unit, another main equipment again reads data from the slave unit, so as to obtain the data that one of main equipment is sent.The present invention also provides a kind of corresponding communication means, and by borrowing third party IIC slave units come data cached, the data transfer between achievable multiple equipment in holotype, communication security is reliable, and is not required to additionally add hardware resource, and development difficulty is relatively low.
Description
Technical field
The present invention relates to communication technique field, more particularly to a kind of many equipment carry out IIC (Inter- under holotype
Integrated Circuit) communication method.
Background technology
IIC (can also be expressed as I2C or I2C) bus is a kind of twin wire universal serial bus, for connect microcontroller and
Its ancillary equipment.The equipment managed using iic bus, referred to as IIC equipment.In IIC communications, the transmission of a data is to send
Device sends the data to receiver, and completing this data transfer needs a main equipment (main frame) and a slave unit (slave).Root
According to IIC communication standards, in the same time, the equipment of two transmission data, which is not simultaneously in holotype, i.e., two, only has main mould
The equipment of formula can not Direct Communication, it is necessary to which a device is in holotype, and another equipment is in slave pattern, and with for the moment
Between can only there is equipment to send time data of data, i.e., one transmission be：Main equipment sends data, and slave unit receives data；Or
Slave unit sends data, and main equipment receives data.
However, in actual applications, due to the limitation of soft and hardware resource, or in order to reduce development difficulty, it is sometimes desirable to
Make two while the IIC equipment under holotype realizes data transfer, but this situation does not meet IIC communicating requirement, presses
More solito can not carry out data transmission.
The content of the invention
In view of this, it is necessary to the system that a kind of many equipment carry out IIC communications under holotype is provided, to solve above-mentioned ask
Topic.
The system that a kind of many equipment carry out IIC communications under holotype, including the multiple masters being connected on an iic bus
Equipment and at least one slave unit, each main equipment only have holotype in IIC communications, and slave unit only has in IIC communications
There is slave pattern, and each main equipment can read and write the slave unit by IIC communication protocols.Each master polls should be from setting
Standby, when one of main equipment needs to send data to another main equipment, one of main equipment will by iic bus
Data are sent to the slave unit, and data will be temporarily stored into the slave unit, another main equipment again by iic bus by data from
Read in the slave unit, so as to obtain the data that one of main equipment is sent.
It there is a need to a kind of method that many equipment carry out IIC communications under holotype that provides, to solve the above problems.
A kind of method that many equipment carry out IIC communications under holotype, applied in a kind of IIC communication systems, the system
Including the multiple main equipments being connected on an iic bus and at least one slave unit, each main equipment can be communicated by IIC
Agreement reads and writes the slave unit.The slave unit includes a third party data buffer area, and the third party data buffer area is used to delay
Deposit data.Each main equipment has different mode of operations, including idle pulley, sending mode and reception pattern, in a number
According in transmitting procedure, send data transfer commencing signal START as the main equipment of data sender and data transfer termination is believed
Number STOP, data transfer response signal ACK is sent as the main equipment of data receiver.It the described method comprises the following steps：
Each is in the main equipment under idle pulley with the of one first fixed frequency poll slave unit on iic bus all the way
The data of tripartite data buffer area；
One of main equipment is when needing to another master transmissions data, write-in START signal to third party's number
According in buffer area, request sends data, and one of main equipment enters sending mode, and should with one second fixed frequency poll
The data of third party data buffer area；
After another main equipment reads the START signal in third party data buffer area, another main equipment
Into reception pattern, and ack signal is write into third party data buffer area, response data is sent, and with the second fixed frequency
The data of the poll third party data buffer area；
If one of main equipment reads the ack signal in third party data buffer area, one of master sets
It is standby that the data transmitted will be needed to be successively written to be sent to another main equipment in third party data buffer area by several times；
If data end of transmission, one of main equipment writes STOP signals to third party data buffer area
In, and exit sending mode and returning to idle mode, with the data of the first fixed frequency poll third party data buffer area；And
When another main equipment reads the STOP signals in third party data buffer area, another main equipment is exited
Reception pattern, and returning to idle mode, with the data of the first fixed frequency poll third party data buffer area.
The IIC communication systems of the present invention, come data cached by borrowing third party IIC slave units, achievable multiple to be in
Data transfer between the equipment of holotype, communication security is reliable, and is not required to additionally add hardware resource, and development difficulty is relatively low.
Brief description of the drawings
The system schematic that Fig. 1 carries out data transmission for a kind of many equipment of the present invention under holotype.
Fig. 2 is the switching schematic diagram of three kinds of mode of operations of the main equipment of the present invention.
Fig. 3 transmits the definition table of signal for the IIC that the present invention is used.
The method flow diagram that Fig. 4 carries out data transmission for a kind of many equipment of the present invention under holotype.
Fig. 5 is in the particular flow sheet that data are sent under sending mode for the main equipment of the present invention.
Fig. 6 is the main equipment of the invention lower particular flow sheet for receiving data in a receive mode.
Main element symbol description
Main equipment 20
First main equipment 21
Second main equipment 22
Slave unit 30
Third party data buffer area 31
Following embodiment will further illustrate the present invention with reference to above-mentioned accompanying drawing.
Embodiment
Referring to Fig. 1, a kind of many equipment carry out the system of IIC communications under holotype, including it is connected to an iic bus
On multiple main equipments 20 and at least one slave unit 30, wherein, each main equipment 20 and slave unit 30 are IIC equipment, often
One main equipment 20 only has holotype in IIC communications, and slave unit 30 only has slave pattern in IIC communications, and each master sets
Standby 20 can read and write the slave unit by IIC communication protocols.
In present embodiment, each poll of main equipment 20 slave unit 30 is set with being connected with two masters on an iic bus
It is standby, such as exemplified by the first main equipment 21 and the second main equipment 22, and a slave unit 30, when the first main equipment 21 needs to send number
During according to the second main equipment 22, the first main equipment 21 in holotype is sent the data in slave pattern by iic bus
Slave unit 30, data will be temporarily stored into slave unit 30, and the second main equipment 22 in holotype is again by iic bus by data
Read from the slave unit 30 in slave pattern, so as to obtain the data of the first main equipment 21 transmission.Similarly, when the second main equipment
22 when needing to send data to the first main equipment 21, and the second main equipment 22 in holotype is sent data by iic bus
To the slave unit 30 in slave pattern, data will be temporarily stored in slave unit 30, and the first main equipment 21 in holotype passes through again
Iic bus reads data from the slave unit 30 in slave pattern, so as to obtain the data of the second main equipment 22 transmission.
In present embodiment, the slave unit 30 includes a third party data buffer area 31, the third party data buffer area
31 for data cached.In present embodiment, the third party data buffer area 31 has a byte, i.e. 8bit data storage
Space.The slave unit 30 can be a controller, and it is next data cached as the third party data buffer area to provide a register.
The slave unit 30 or a memory, and the space of one byte of one register of offer or offer is used as third party's data
Buffer area comes data cached.The data of each writable byte of each main equipment 20 are into the third party data buffer area.
Obviously, in other embodiments, the third party data buffer area can store the data more than a byte, for example, store 1,000,000
Data.
Referring to Fig. 2, in the present embodiment, each main equipment 20 has data receiver and the function of sending, i.e., simultaneously
Main equipment 20 can be operated in different mode of operations, including idle pulley, sending mode and reception pattern.Also referring to figure
3, it is that the IIC that the present invention is used transmits the definition table of signal.Wherein, in a data transmission procedure, if the first main equipment 21
For data sender, the second main equipment 22 is data receiver.Data can be sent as the first main equipment 21 of data sender
Transmit commencing signal START, data transfer termination signal STOP, data-signal DATA_LOW4BIT and data-signal DATA_
HIGH4BIT, data transfer response signal ACK can be sent as the second main equipment 22 of data receiver.In present embodiment,
Low four of data transfer response signal ACK, data-signal DATA_LOW4BIT and data-signal DATA_HIGH4BIT are
Data bit, and data are arbitrary data, high four are flag, and with fixed data, for example, the height of ack signal
Four are that the Gao Siwei of 0101, DATA_LOW4BIT signals is that the Gao Siwei of 1110, DATA_HIGH4BIT signals is 1111.
In data transmission procedure, data-signal DATA_LOW4BIT low four figures is according to the low four figures evidence for transmission byte, the number
It is believed that number DATA_HIGH4BIT low four figures is according to the high four figures evidence for transmission byte.It is complete in the data transfer of single byte
Bi Hou, data receiver is by the low four figures evidence of the transmission byte received and high four figures according to the data for merging into a byte
And preserve.
A byte, i.e. 8bit data are write into the slave unit 30 every time as the first main equipment 21 of data sender
Third party data buffer area 31 in and be sent to after data receiver, inquire about the third party data buffer area 31 and wait pending data
The data transfer response signal ACK that recipient sends.If data sender is within the time of a setting not in third party's number
According to signal ACK is inquired in buffer area 31, then illustrate that the data receiver does not respond to data transmission within the time of the setting
The data sending request of side is without sending data transfer response signal ACK, data transfer termination.So, when each main equipment
Between when needing to carry out data transmission, the number that data sender and data receiver pass through poll third party data buffer area 31
According to, and basis signal (START, ACK, STOP) completes the synchronization action of data transmission procedure, and basis signal (DATA_
LOW4BIT, DATA_HIGH4BIT) realize the transmission of data.Each main equipment 20 is by writing to third party data buffer area
Data in 31 and the data in poll third party data buffer area 31 and switched in different mode.
Wherein, the concept of poll third party data buffer area is：It is with fixed frequency, such as per minute three times, to read
The data of tripartite data buffer area judge to do analysis, and the success or failure to transmission in the inspection duration of a setting are judged.
Judge because receiving-transmitting sides are required for reading the data of third party data buffer area with fixed frequency to do analysis, read every time
Action is taken to be required for taking iic bus, in order to complete data transfer in time and not significantly increase the utilization rate of iic bus, this reality
Apply in mode, when not having data transfer, the frequency that receiving-transmitting sides read third party data buffer area is relatively low.Passed entering data
When defeated, the frequency that receiving-transmitting sides read third party data buffer area is higher, so can comparatively fast complete data transfer, again can be not
Iic bus is left for miscellaneous equipment when carrying out data transmission or other functions are used.
Also referring to Fig. 4-6, a kind of method that many equipment carry out IIC communications under holotype comprises the following steps：
Step A, each is in the main equipment under idle pulley with one first fixed frequency poll from setting on iic bus all the way
The data of standby third party data buffer area 31.
Step B, when one of main equipment (such as the first main equipment 21) is needed to another main equipment (such as the second master
Equipment 22) transmission data when, first main equipment 21 writes data transfer commencing signal START to third party data buffer area 31
In, request sends data, and first main equipment 21 enters sending mode, and with one second fixed frequency poll third party's data
The data of buffer area 31.Wherein, second fixed frequency is higher than first fixed frequency.
Step C, after the second main equipment 22 reads the START signal in third party data buffer area 31, second master
Equipment 22 enters reception pattern, and writes data transfer response signal ACK into third party data buffer area 31, response data hair
Send, and with the data of the second fixed frequency poll third party data buffer area 31.
Step D, if the ACK letters in third party data buffer area 31 should be read in the first main equipment 21 of sending mode
Number when, first main equipment 21 will need the data transmitted to be successively written to send in third party data buffer area 31 by several times
To the second main equipment 22.
In present embodiment, if should be read in the first main equipment 21 of sending mode in third party data buffer area 31
Ack signal when, first main equipment 21 will need transmit data by several times be successively written to third party data buffer area 31
In and be sent to the second main equipment 22 and specifically include following steps：
Step D1, first main equipment 21 writes data-signal DATA_LOW4BIT into third party data buffer area 31,
Wherein, data-signal DATA_LOW4BIT low four figures is according to the low four figures evidence for transmission byte.
Step D2, the data in third party data buffer area 31 are read when second main equipment 22 in a receive mode
During signal DATA_LOW4BIT, second main equipment 22 responds the transmission request of the low four figures evidence of the transmission byte, and this is passed
The ack signal is written to third party data buffer area by the low four figures of defeated byte according to the low four figures evidence as ack signal
In 31.
Step D3, if first main equipment 21 reads the ack signal in third party data buffer area 31, first master
Whether the low four figures evidence for the transmission byte that the low four figures evidence of the inspection of equipment 21 ack signal is sent with first main equipment 21
It is identical, if it is different, then the chance of poll third party data buffer area 31 next time is continued waiting for, until stand-by period time-out,
Judge that the low four figures of transmission byte fails according to transmission；If identical, the low four figures of transmission byte is judged according to sending successfully,
First main equipment 21 continues to write to data-signal DATA_HIGH4BIT into third party data buffer area 31, wherein, the data
Signal DATA_HIGH4BIT low four figures is according to the high four figures evidence for transmission byte.
Step D4, the data-signal DATA_ in third party data buffer area 31 is read when second main equipment 22
During HIGH4BIT, second main equipment 22 responds the transmission request of the high four figures evidence of the transmission byte, by the transmission byte
The ack signal is written in third party data buffer area 31 by high four figures according to the low four figures evidence as ack signal, and will
The low four figures evidence of the transmission byte received and high four figures are according to the data for merging into a byte.
Step D5, if first main equipment 21 reads the ack signal in third party data buffer area 31, first master
Whether the high four figures evidence for the transmission byte that the low four figures evidence of the inspection of equipment 21 ack signal is sent with first main equipment 21
It is identical, if it is different, then the chance of poll third party data buffer area 31 next time is continued waiting for, until stand-by period time-out,
Judge that the high four figures of transmission byte fails according to transmission；If identical, the high four figures of transmission byte is judged according to sending successfully,
And judge whether that also data need transmission, if so, then return to step D1, circulation performs above-mentioned steps D1~D5, continue to pass
The data of defeated next byte, until data transfer is finished.
Step E, if data end of transmission, first main equipment 21 writes data transfer termination signal STOP to the
In tripartite data buffer area 31, and sending mode is exited and returning to idle mode, with first fixed frequency poll third party's data
The data of buffer area 31.
Step F, when second main equipment 22 in a receive mode reads the STOP in third party data buffer area 31
Signal, second main equipment 22 exits reception pattern, and returning to idle mode, slow with the first fixed frequency poll third party data
Deposit the data in area 31.
In this way, the transmission of the single byte or multibyte data between multiple equipment in holotype can be achieved.
The IIC communication systems of the present invention, come data cached by borrowing third party IIC slave units, achievable multiple to be in
Data transfer between the equipment of holotype, communication security is reliable, and is not required to additionally add hardware resource, and development difficulty is relatively low.
Those skilled in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as within the spirit of the present invention, being made to above example
It is appropriate to change and change all to fall within the scope of protection of present invention.
Claims (5)
1. a kind of method that many equipment carry out IIC communications under holotype, applied in a kind of IIC communication systems, the system bag
The multiple main equipments being connected on an iic bus and at least one slave unit are included, each main equipment can pass through IIC communication protocols
Discuss to read and write the slave unit, the slave unit includes a third party data buffer area, the third party data buffer area is used to cache
Data, it is characterised in that each main equipment has different mode of operations, including idle pulley, sending mode and reception pattern,
In a data transmission procedure, send data transfer commencing signal START as the main equipment of data sender and data are passed
Defeated termination signal STOP, sends data transfer response signal ACK, methods described includes following as the main equipment of data receiver
Step：
All the way on iic bus each be in idle pulley under main equipment with the third party of one first fixed frequency poll slave unit
The data of data buffer area；
One of main equipment is when needing to another master transmissions data, and write-in START signal is slow to third party's data
Deposit in area, request sends data, one of main equipment enters sending mode, and with one second fixed frequency poll the 3rd
The data of square data buffer area；
After another main equipment reads the START signal in third party data buffer area, another main equipment enters
Reception pattern, and ack signal is write into third party data buffer area, response data is sent, and with the second fixed frequency poll
The data of the third party data buffer area；
If one of main equipment reads the ack signal in third party data buffer area, one of main equipment will
The data of transmission are needed to be successively written to be sent to another main equipment in third party data buffer area by several times；
If data end of transmission, one of main equipment writes STOP signals into third party data buffer area, and
Sending mode is exited and returning to idle mode, with the data of the first fixed frequency poll third party data buffer area；And
When another main equipment reads the STOP signals in third party data buffer area, another main equipment exits reception
Pattern, and returning to idle mode, with the data of the first fixed frequency poll third party data buffer area.
2. the method as described in claim 1, it is characterised in that the data that the third party data buffer area has a byte are deposited
Space is stored up, " if one of main equipment reads the ack signal in third party data buffer area, this wherein one for the step
Individual main equipment will need the data transmitted to be successively written to be sent to the second main equipment in third party data buffer area by several times "
Specifically include following steps：
One of main equipment writes a data-signal DATA_LOW4BIT into third party data buffer area, wherein, the number
It is believed that number DATA_LOW4BIT low four figures is according to the low four figures evidence for transmission byte, data-signal DATA_LOW4BIT's
Gao Siwei is flag, and with fixed data；
When another main equipment reads the data-signal DATA_LOW4BIT in third party data buffer area, this another
Main equipment responds the transmission request of the low four figures evidence of the transmission byte, and write-in ack signal is into third party data buffer area；
If one of main equipment reads the ack signal in third party data buffer area, one of main equipment after
Data-signal DATA_HIGH4BIT is continued into third party data buffer area, wherein, data-signal DATA_HIGH4BIT
Low four figures according to the high four figures evidence for transmission byte, data-signal DATA_HIGH4BIT Gao Siwei is flag, and
With fixed data；
When another main equipment reads the data-signal DATA_HIGH4BIT in third party data buffer area, this is another
Individual main equipment responds the transmission request of the high four figures evidence of the transmission byte, writes ack signal into third party data buffer area,
And by the low four figures evidence of the transmission byte received and high four figures according to the data for merging into a byte；And
If one of main equipment reads the ack signal in third party data buffer area, one of main equipment is sentenced
It is disconnected whether to also have data to need transmission, if so, then circulation performs above-mentioned steps, continue to transmit the data of next byte, directly
Finished to data transfer.
3. method as claimed in claim 2, it is characterised in that another main equipment responds the low four figures of the transmission byte
According to transmission ask and be written to the low four figures of ack signal in third party data buffer area according to the transmission byte for being the reception
Low four figures evidence, " one of main equipment continues to write to data-signal DATA_HIGH4BIT to third party's data to the step
In buffer area " also include step before：
One of main equipment checks the low four figures of the ack signal according to the transmission byte sent with one of main equipment
Low four figures according to whether identical, if it is different, then continue waiting for the chance of poll third party data buffer area next time, until
Stand-by period time-out, judges that the low four figures of transmission byte fails according to transmission；If identical, the low four of transmission byte is judged
Data are sent successfully.
4. method as claimed in claim 2, it is characterised in that another main equipment responds the high four figures of the transmission byte
According to transmission ask and be written to the low four figures of ack signal in third party data buffer area according to the transmission byte for being the reception
High four figures evidence, also include step before the step " one of main equipment judges whether that also data need transmission "：
One of main equipment checks the low four figures of the ack signal according to the transmission byte sent with one of main equipment
High four figures according to whether identical, if it is different, then continue waiting for the chance of poll third party data buffer area next time, until
Stand-by period time-out, judges that the high four figures of transmission byte fails according to transmission；If identical, the high four of transmission byte is judged
Data are sent successfully.
5. the method as described in claim 1, it is characterised in that second fixed frequency is higher than first fixed frequency.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210561022.6A CN103885910B (en) | 2012-12-21 | 2012-12-21 | The method that many equipment carry out IIC communications under holotype |
| CN201710597107.2A CN107357756A (en) | 2012-12-21 | 2012-12-21 | The system that more equipment carry out IIC communications under holotype |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210561022.6A CN103885910B (en) | 2012-12-21 | 2012-12-21 | The method that many equipment carry out IIC communications under holotype |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710597107.2A Division CN107357756A (en) | 2012-12-21 | 2012-12-21 | The system that more equipment carry out IIC communications under holotype |
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| Publication Number | Publication Date |
|---|---|
| CN103885910A CN103885910A (en) | 2014-06-25 |
| CN103885910B true CN103885910B (en) | 2017-08-25 |
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| CN201710597107.2A Pending CN107357756A (en) | 2012-12-21 | 2012-12-21 | The system that more equipment carry out IIC communications under holotype |
| CN201210561022.6A Active CN103885910B (en) | 2012-12-21 | 2012-12-21 | The method that many equipment carry out IIC communications under holotype |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710597107.2A Pending CN107357756A (en) | 2012-12-21 | 2012-12-21 | The system that more equipment carry out IIC communications under holotype |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107453845B (en) * | 2016-03-31 | 2021-01-15 | 阿里巴巴集团控股有限公司 | Response confirmation method and device |
| CN109327284B (en) * | 2018-11-27 | 2021-04-13 | 联想(北京)有限公司 | Data transmission method and device and electronic equipment |
| CN111124979B (en) * | 2019-10-31 | 2021-07-06 | 苏州浪潮智能科技有限公司 | Stack structure-based I2C multi-master access method and system |
| CN114443544B (en) * | 2022-04-02 | 2022-06-28 | 井芯微电子技术(天津)有限公司 | I2C module-based master-slave mode switching method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034381A (en) * | 2006-03-08 | 2007-09-12 | 松下电器产业株式会社 | Multi-master system and data transfer system |
| CN101894088A (en) * | 2010-07-21 | 2010-11-24 | 中兴通讯股份有限公司 | Method and device for solving conflict of multiple hosts on I2C bus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004171209A (en) * | 2002-11-19 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Shared memory data transfer device |
| CN101114269A (en) * | 2006-07-28 | 2008-01-30 | 深圳迈瑞生物医疗电子股份有限公司 | Multiple peripheral self-determination data-transmission and storage method |
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2012
- 2012-12-21 CN CN201710597107.2A patent/CN107357756A/en active Pending
- 2012-12-21 CN CN201210561022.6A patent/CN103885910B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034381A (en) * | 2006-03-08 | 2007-09-12 | 松下电器产业株式会社 | Multi-master system and data transfer system |
| CN101894088A (en) * | 2010-07-21 | 2010-11-24 | 中兴通讯股份有限公司 | Method and device for solving conflict of multiple hosts on I2C bus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103885910A (en) | 2014-06-25 |
| CN107357756A (en) | 2017-11-17 |
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