CN106168934B - A kind of data transmission method and device - Google Patents
A kind of data transmission method and device Download PDFInfo
- Publication number
- CN106168934B CN106168934B CN201610494157.3A CN201610494157A CN106168934B CN 106168934 B CN106168934 B CN 106168934B CN 201610494157 A CN201610494157 A CN 201610494157A CN 106168934 B CN106168934 B CN 106168934B
- Authority
- CN
- China
- Prior art keywords
- bus
- programming device
- processing unit
- central processing
- business module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system
- G06F13/362—Handling requests for interconnection or transfer for access to common bus or bus system with centralised access control
-
- 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)
Abstract
The embodiment of the present invention provides a kind of data transmission method and device, is related to the communications field, accesses operation to business module simultaneously for main control module.It include: main control module include central processing unit and programming device, programming device includes logic gates, logic gates is used to control the state machine of programming device, and central processing unit sends access request to programming device, and access request is write access or read access；Logic gates controls the state machine of programming device according to access request；Central processing unit simultaneously accesses operation at least two business modules by the link between main control module and each business module.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of data transmission methods and device.
Background technique
Currently, distributed network communication equipment include by I2C bus (Inter-IC bus) connection main control module with
Business module.I2C bus means " specification or agreement of completing information exchange between integrated circuit or functional unit ", provides
Communication line between integrated circuit (ICs).I2C bus is released by Philips company earliest, using a data line (English
Full name: SerialData, English abbreviation: SDA), add a clock lines (full name in English: clock line, English abbreviation: SCL)
The transmission of data and the extension of peripheral components are completed, is the two-way continuous bus of two lines.
As shown in Figure 1a, a kind of distributed network communication device structure schematic diagram is provided for the prior art.Main control module packet
The central processing unit (full name in English: Central Processing Unit, English abbreviation: CPU) included passes through I2C interface, connection
Multipath I 2 C extended function module, to realize that main control module can connect multiple business modules, to carry out read access or write access.By
It is a kind of Serial Extension technology in I2C bus, what main control module also can only be serial carries out read access or write access to business module,
Read access or write access cannot be carried out simultaneously to multiple business modules parallel.
As shown in Figure 1 b, device structure schematic diagram is communicated for another distributed network that the prior art provides.Master control mould
Block connects programming device, designs multiple I2C controllers on programming device, each I2C controller and business module
IC bus (full name in English: Inter-Integrated Circuit, English abbreviation: IIC) interface is connected.Although
Can be realized to multiple business modules while carrying out read access or write access, still, due to programming device contain it is more
The internal resource consumption of I2C controller, programming device is more, and carries out read access or write access simultaneously to multiple business modules
Efficiency it is lower.
So, how to realize that the high efficiency read access of distributed network communication each business module of equipment or write access be one
A urgent problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of data transmission method and devices, can be patrolled using less programming device
Resource is collected, realizes the high efficiency read access to distributed network communication each business module of equipment or write access.
Above-mentioned target and other targets will be reached by the feature in independent claims.Further implementation exists
It is embodied in dependent claims, the description and the appended drawings.
In a first aspect, providing a kind of data transmission method, it is applied to distributed network and communicates equipment, distributed network communication
Equipment includes a main control module and N number of business module, and N is integer more than or equal to 2, main control module include central processing unit and
Programming device, programming device include logic gates, and logic gates is used to control the state machine of programming device, described
Method includes:
Central processing unit sends access request to programming device, and access request is write access or read access；Logic gate electricity
Road controls the state machine of programming device according to access request, so that main control module establishes the chain between each business module
Road；Central processing unit simultaneously visits at least two business modules by the link between main control module and each business module
Ask operation.
The data transmission method that above-mentioned first aspect provides may be programmed by increasing programming device newly in main control module
The shape for the access request control programming device that the logic gates that device includes is issued according to the central processing unit of main control module
State machine, i.e. link between control main control module and each business module, in order to which the central processing unit of main control module passes through master
Link between control module and each business module simultaneously accesses operation to business module, thus, it is possible to less in utilization
Programming device logical resource, while the universal I2C Standard Interface of central processing unit of main control module can be used, and use rule
The I2C access operation of model realizes the high efficiency read access to distributed network communication each business module of equipment or write access.
With reference to first aspect, can be in realization mode at the first, central processing unit is total by the first I2C with programming device
Line connection, main control module are connect by N number of I2C bus with N number of business module, i.e., each business module passes through an I2C bus
It is connect with main control module, the state machine of programming device is in first state, and first state is inside programming device by the
One logical signal line realizes that the logical connection with N number of I2C bus and the first I2C bus, the access request are write access,
Central processing unit simultaneously accesses to business module by the link between main control module and each business module
Operation includes: central processing unit by the first I2C bus, the first logical signal line and N number of I2C bus while at least two
A business module carries out write access；Central processing unit is received by the first I2C bus, the first logical signal line and N number of I2C bus
The response that the business module of write access is sent.So, main control module is by first logical signal line to each
Business module sends write access, so that main control module can carry out write access at least two business modules simultaneously.
With reference to first aspect, in second of achievable mode, central processing unit is total by the first I2C with programming device
Line connection, main control module are connect by N number of I2C bus with N number of business module, and the state machine of programming device is in the first shape
State, first state are to be realized and N number of I2C bus and the first I2C inside the programming device by the first logical signal line
The logical connection of bus, programming device further include N-1 data register, and the access request is read access,
Logic gates includes: logic gates according to read access according to the state machine that access request controls programming device
The state machine for controlling programming device is changed into the second state from first state, and the second state is inside programming device by the
One logical signal line realizes that the logical connection with the 2nd I2C bus and the first I2C bus, the 2nd I2C bus are connection
The bus of main control module and the first business module, and realized and N-1 by the second logical signal line to N logical signal line
The one-to-one logical connection of I2C bus, it is total with the one-to-one connection of N-1 business module that N-1 I2C bus is main control module
Line, and the second logical signal line to N logical signal line respectively with the one-to-one logical connection of N-1 data register；Centre
Reason device includes: simultaneously centre to the business module operation that accesses by the link between main control module and each business module
It manages device and read access is carried out to the first business module by the first I2C bus, the first logical signal line and the 2nd I2C bus,
The I2C bus and logic that each business module is connected by corresponding data register in N-1 business module simultaneously are believed
Number line sends data to corresponding data register.To which main control module can simultaneously read at least two business modules
Access.
In conjunction with second of achievable mode, described the can be passed through in the central processing unit in realization mode at the third
One I2C bus, the first logical signal line and the 2nd I2C bus carry out read access to first business module, together
Each business module is connected by the corresponding data register in Shi Suoshu N-1 business module I2C bus and
Logical signal line is sent data to after the corresponding data register, the method also includes:
The state machine that logic gates controls the programming device is changed into the third state from second state, described
The third state is that the N-1 data register head and the tail are logically contiguous, and patrol inside the programming device by described first
Collect the logical connection of signal wire realization and the first I2C bus and the first data register；Central processing unit is continuously read
Take the data in the N-1 data register.
Mode can be realized in conjunction with the third, in the 4th kind of achievable mode, continuously read institute in the central processing unit
After stating the data in N-1 data register, the method also includes: the state machine of logic gates control programming device
It is changed into the first state from the third state, central processing unit passes through the first I2C bus, the first logical signal line
Response is sent to N number of business module with N number of I2C bus.
Mode or the 4th kind of achievable mode can be realized in conjunction with the first, in the 6th kind of achievable mode, in described
Central processor is by the link between the main control module and each business module simultaneously at least two business moulds
Block accesses before operation, the method also includes:
Central processing unit sends the address of business module, locator service module；Central processing unit is total by the first I2C
Line, the first logical signal line and N number of I2C bus receive the response that the business module being addressed is sent.
In conjunction with the first can realize mode into the 5th kind of achievable mode any one, in the 6th kind of achievable mode
In, at least two business modules are carried out simultaneously by the link between main control module and each business module in central processing unit
After access operation, the method also includes:
Central processing unit is sent by the first I2C bus, the first logical signal line and N number of I2C bus to N number of business module
It stops operation.
Second aspect provides a kind of distributed network communication equipment, and it includes a master control mould that distributed network, which communicates equipment,
Block and N number of business module, N are integer more than or equal to 2, and main control module includes central processing unit and programming device, it is described can
Programming device includes logic gates, and the logic gates is used to control the state machine of programming device,
Central processing unit, for sending access request to programming device, access request is write access or read access；Logic
Gate circuit, for controlling the state machine of programming device according to access request, so that main control module is established and each business module
Between link；Central processing unit is also used to through the link between main control module and each business module simultaneously at least two
A business module accesses operation.Concrete implementation mode can be with reference to specific in the data transmission method that first aspect provides
Behavioral function.
In the present invention, the name pair of central processing unit, programming device, main control module, business module and logic gates
Equipment itself does not constitute restriction, and in practical implementations, these equipment can occur with other titles.As long as the function of each equipment
It is similar with the present invention, within the scope of the claims of the present invention and its equivalent technology.
The aspects of the invention or other aspects can more straightforwards in the following description.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 a is that a kind of distributed network that the prior art provides communicates device structure schematic diagram；
Fig. 1 b is that another distributed network that the prior art provides communicates device structure schematic diagram；
Fig. 2 is that a kind of distributed network provided in an embodiment of the present invention communicates device structure schematic diagram；
Fig. 3 is a kind of first state schematic diagram of the state machine of programming device provided in an embodiment of the present invention；
Fig. 4 is a kind of data transmission method flow chart provided in an embodiment of the present invention；
Fig. 5 is another data transmission method flow chart provided in an embodiment of the present invention；
Fig. 6 is that a kind of state machine of programming device provided in an embodiment of the present invention and the corresponding relationship of write access process show
It is intended to；
Fig. 7 is another data transmission method flow chart provided in an embodiment of the present invention；
Fig. 8 is that a kind of state machine of programming device provided in an embodiment of the present invention and the corresponding relationship of read access process show
It is intended to；
Fig. 9 is a kind of second status diagram of the state machine of programming device provided in an embodiment of the present invention；
Figure 10 is a kind of third state schematic diagram of the state machine of programming device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is clearly retouched
It states.
Basic principle of the invention is: accessing operation, visits to business module for main control module in the prior art
It asks in the lower situation of efficiency, of the invention by increasing programming device newly in main control module, what programming device included patrols
Collect the state machine for the access request control programming device that gate circuit is issued according to the central processing unit of main control module, i.e. control master
The link between module and each business module is controlled, in order to which the central processing unit of main control module passes through main control module and each industry
Link between business module simultaneously accesses operation to business module, thus, it is possible to patrol using less programming device
Resource, while the I2C Standard Interface that can be used the central processing unit of main control module universal are collected, and the I2C of operating specification accesses behaviour
Make, realizes the high efficiency read access to distributed network communication each business module of equipment or write access.
The embodiment of the present invention provides a kind of distributed network communication device structure schematic diagram, as shown in Figure 2, comprising: one
Main control module and N number of business module, main control module are connect by N number of I2C bus with N number of business module, i.e., each business module
It is connect by an I2C bus with main control module, N is the integer more than or equal to 2, wherein main control module includes central processing unit
And programming device, central processing unit are connect with programming device by the first I2C bus, programming device includes logic gate electricity
Road, logic gates are used to control the state machine of programming device.
Wherein, central processing unit, for sending access request to programming device, access request is write access or reads to visit
It asks；Logic gates, for controlling the state machine of programming device according to access request, so that main control module is established and each industry
Link between module of being engaged in；Central processing unit, it is right simultaneously by the link between main control module and each business module to be also used to
At least two business modules access operation.
It should be noted that when central processing unit does not send access request to programming device, the shape of programming device
State machine is in first state, first state be inside programming device by the first logical signal line realize with N number of I2C bus with
And the logical connection of the first I2C bus, the first state of the state machine of programming device are equivalent to original state, that is,
Distributed network communication equipment does not carry out the state of any access operation.As shown in figure 3, the of the state machine of programming device
One state.
Specifically, logic gates judgement is programmable after central processing unit sends write access request to programming device
The state machine of device is original state, i.e. first state, and first state is to pass through the first logical signal line inside programming device
Realize the logical connection with N number of I2C bus and the first I2C bus, central processing unit passes through main control module when first state
Link between each business module carries out write access to business module simultaneously, that is, is patrolled by the first I2C bus, first
It collects signal wire and N number of I2C bus carries out write access at least two business modules simultaneously, finally, central processing unit passes through first
I2C bus, the first logical signal line and N number of I2C bus are stopped operation to the transmission of N number of business module.
After central processing unit sends read access request to programming device, logic gates judges the shape of programming device
State machine is original state, i.e. first state, the main control module and each business module when central processing unit passes through first state it
Between link be addressed to operate, if addressed successfully, central processing unit receive read access business module send response
Response；Then, logic gates is changed into the second state from first state according to the state machine that read access controls programming device,
Second state is to be realized and the 2nd I2C bus and the first I2C bus inside programming device by the first logical signal line
Logical connection, the 2nd I2C bus are to connect the bus of main control module and the first business module, and pass through the second logical signal line
Realize that the one-to-one logical connection with N-1 I2C bus, N-1 I2C bus are main control module and N-1 to N logical signal line
The bus of a one-to-one connection of business module, and the second logical signal line to N logical signal line respectively with N-1 data register
The one-to-one logical connection of device, central processing unit is by the first I2C bus, the first logical signal line and the 2nd I2C bus to first
Business module carries out read access, while each business module is connected by corresponding data register in N-1 business module
The I2C bus and logical signal line connect sends data to corresponding data register；Again, logic gates control is programmable
The state machine of device is changed into the third state from the second state, and the third state is logically contiguous for N-1 data register head and the tail, and
The logical connection with the first I2C bus and first data register is realized by the first logical signal line inside programming device,
Central processing unit continuously reads the data in N-1 data register；Finally, the state of logic gates control programming device
Machine is changed into first state from the third state, and central processing unit is total by the first I2C bus, the first logical signal line and N number of I2C
Line sends response to N number of business module, and central processing unit passes through the first I2C bus, the first logical signal line and N number of I2C
Bus is stopped operation to the transmission of N number of business module.
It should be noted that design I2C host or I2C slave are not needed inside programming device, only comprising in part
The logic and partial data register (I2C DAT2~I2C DATN) of portion's signal connection state of a control machine.Programming device root
According to the difference for the central processing unit access process that main control module includes, programming device switches different state machines, realizes concurrent
I2C read access or write access.Unified status information address distribution, i.e. a home address are realized inside each business module
The a certain characteristic monitor state information of corresponding business module, and the information type definition of all business modules is consistent.
Embodiment 1
The embodiment of the present invention provides a kind of data transmission method, communicates equipment based on distributed network shown in Fig. 2, such as schemes
Shown in 4, comprising:
Step 201, central processing unit send access request to programming device.
Access request is write access or read access.
Step 202, programming device control the state machine of programming device according to access request, so that main control module is established
With the link between each business module.
Link between main control module and each business module includes the entity between main control module and each business module
Logical links between link and main control module and each business module, i.e. programming device and main control module and business mould
The link of I2C bus between block.
Step 203, central processing unit are by the link between main control module and each business module simultaneously at least two
Business module accesses operation.
So, by increasing programming device, the logic gates root that programming device includes newly in main control module
According to the state machine for the access request control programming device that the central processing unit of main control module issues, i.e. control main control module and every
Link between a business module, in order to which the central processing unit of main control module passes through between main control module and each business module
Link access operation to business module simultaneously, thus, it is possible in the less programming device logical resource of utilization, simultaneously
The universal I2C Standard Interface of central processing unit of main control module, and the I2C access operation of operating specification can be used, realize to point
The high efficiency read access of each business module of cloth network communication equipment or write access.
Embodiment 2
The embodiment of the present invention provides a kind of data transmission method, communicates equipment based on distributed network shown in Fig. 2, can compile
The state machine of journey device is in first state, and first state is inside programming device by the realization of the first logical signal line and N
The logical connection of a I2C bus and the first I2C bus, main control module initiate the write access to business module, as shown in figure 5,
The described method includes:
Step 301, central processing unit send access startup operation symbol (STA) to programming device.
Step 302, central processing unit send the address of business module, locator service module.
Step 303, central processing unit are sought by the first I2C bus, the first logical signal line and the reception of N number of I2C bus
The response that the business module of location is sent.
Step 304, central processing unit are by the first I2C bus, the first logical signal line and N number of I2C bus simultaneously to extremely
Few two business modules carry out write access.
Step 305, central processing unit write visit by the first I2C bus, the first logical signal line and the reception of N number of I2C bus
The response that the business module asked is sent.
Step 306, central processing unit pass through the first I2C bus, the first logical signal line and N number of I2C bus to N number of business
Module transmission stops operation.
Write access refers to the data transmission that host is initiated to slave, which can be listened to by slave and be stored in inside slave
Register in realize specific function.Central processing unit may include I2C host, and business module includes I2C slave.
As shown in fig. 6, the correspondence diagram of the state machine of programming device and write access process.
The I2C host for the central processing unit that main control module includes initiates startup operation (S)；I2C host sending device address
(DEVICE ADDRESS) addresses the I2C slave to be accessed；I2C host sends read and write control bit, read and write control bit
Numerical value be " 0 " when indicate write access, the numerical value of read and write control bit indicates read access when being " 1 "；I2C slave listen to addressing with
The address of equipment of itself is consistent, and feeding back ACK responds (A), and numerical value is that " 0 " indicates effective ACK；I2C host listens to effective response
The data (DATA) of write access are sent afterwards, and each data conveying length is 8bit；After I2C slave receives 8bit data, feedback
One response (A)；It can also continue to write a data, response condition and I2C master of the I2C host according to I2C slave herein
The access of machine itself is arranged, and judges whether to terminate access, initiation, which stops operation, terminates this access (P).
It should be noted that main control module, which can also be arranged, carries out write access to which specific business module.
Particularly, if not listen to addressing consistent with the address of equipment of itself for I2C slave, feeding back ACK is not rung I2C slave
It answers (A), or feedback NACK response (NA), numerical value is that " 1 " indicates invalid ACK.
So, by increasing programming device, the logic gates root that programming device includes newly in main control module
According to the state machine for the write access control programming device that the central processing unit of main control module issues, i.e. control main control module and each
Link between business module, in order to which the central processing unit of main control module passes through between main control module and each business module
Link carries out write access to business module simultaneously, thus, it is possible to utilizing less programming device logical resource, while can make
With the I2C Standard Interface that the central processing unit of main control module is universal, and the I2C access operation of operating specification, it realizes to distribution
The high efficiency write access of each business module of network communication equipment.
Embodiment 3
The embodiment of the present invention provides a kind of data transmission method, communicates equipment based on distributed network shown in Fig. 2, can compile
The state machine of journey device is in first state, and first state is to be realized inside the programming device by the first logical signal line
With the logical connection of N number of I2C bus and the first I2C bus, main control module initiates the read access to business module,
As shown in Figure 7, which comprises
Step 401, central processing unit send access startup operation symbol (STA) to programming device.
Step 402, central processing unit send the address of business module, locator service module.
Step 403, central processing unit are sought by the first I2C bus, the first logical signal line and the reception of N number of I2C bus
The response that the business module of location is sent.
Read access refers to behaviors that host is actively initiated, that control slave is to host transmission data.Central processing unit can be with
Including I2C host, business module includes I2C slave.
As shown in figure 8, the corresponding relationship of the state machine of programming device and read access process.
When the state machine of programming device is first state, firstly, the I2C master for the central processing unit that main control module includes
Machine initiates startup operation (S)；I2C host sending device address (DEVICE ADDRESS) addresses the I2C slave to be accessed；I2C
Host sends read and write control bit, the numerical value of read and write control bit is " 0 " when indicate write access, the numerical value of read and write control bit
For " 1 " when indicate read access；It is consistent with the address of equipment of itself that I2C slave listens to addressing, and feeding back ACK responds (A), numerical value
For " 0 " the effective ACK of expression.Read access is carried out again, i.e. execution step 404 to step 411.
Particularly, if not listen to addressing consistent with the address of equipment of itself for I2C slave, feeding back ACK is not rung I2C slave
It answers (A), or feedback NACK response (NA), numerical value is that " 1 " indicates invalid ACK.
Step 404, logic gates are changed into the from first state according to the state machine that read access controls programming device
Two-state.
As shown in figure 9, the second state is to be realized and the 2nd I2C bus inside programming device by the first logical signal line
And the first I2C bus logical connection, i.e. the first logical signal line not only carried out logical connection with the 2nd I2C bus but also with first
I2C bus carries out logical connection, and the 2nd I2C bus be to connect the bus of main control module and the first business module, and pass through the
Two logical signal lines realize that the one-to-one logical connection with N-1 I2C bus, N-1 I2C bus are to N logical signal line
The bus of main control module and the one-to-one connection of N-1 business module other than the first business module, i.e. a business module are logical
It crosses an I2C bus to connect with programming device, and the second logical signal line is a with N-1 respectively to the N logical signal line
The one-to-one logical connection of data register.For example, the second business module passes through the 3rd I2C bus and the second logical signal line and the
The connection of one data register.
Step 405, central processing unit are by the first I2C bus, the first logical signal line and the 2nd I2C bus to the first industry
Module of being engaged in carries out read access.
When executing step 405, it is performed simultaneously step 406.
The I2C that each business module is connected by corresponding data register in step 406, N-1 business module
Bus and logical signal line send data to corresponding data register.
For example, the second business module sends data to corresponding by the 3rd I2C bus and the second logical signal line
One data register.
The state machine that step 407, logic gates control programming device is changed into the third state from the second state.
As shown in Figure 10, the third state is that N-1 data register head and the tail are logically contiguous, and pass through inside programming device
First logical signal line realizes the logical connection with the first I2C bus and first data register.
Step 408, central processing unit continuously read the data in N-1 data register.
N-1 data are sent, and execute step 409.
The state machine that step 409, logic gates control programming device is changed into first state from the third state.
Step 410, central processing unit pass through the first I2C bus, the first logical signal line and N number of I2C bus to N number of business
Module sends response.
Step 411, central processing unit pass through the first I2C bus, the first logical signal line and N number of I2C bus to N number of business
Module transmission stops operation.
Specifically, as shown in figure 8, the correspondence diagram of the state machine of programming device and read access process.
The I2C slave of first business module transfers data to the I2C host of the central processing of main control module, remaining business
The I2C slave of module transfers data to the preservation of the corresponding data register inside programming device.
Data (SDA) signal is kept high-impedance state (non-driven state) by the I2C host of the central processing of main control module, driving
The high low state of clock (SCL) signal switches, and height cycle of states switches 8 times, slave driving data when clock signal is low
The logic state of signal keeps the logic state of data-signal when clock signal is high, will be in accessed I2C address register
Address corresponding inside 1 byte data is transferred to I2C host, realizes the read operation of 1 byte.
Optionally, after 1 byte data is read, what I2C host was sent by the first I2C bus to the first business module
Response.
Therefore, in first read operation, the data of the first business module are read successfully by I2C host, remaining business mould
The reading data of block are saved in the data register inside programming device.
After the first character joint number evidence that I2C slave is transmitted to I2C host is transmitted, all business modules and main control module
Link disconnect, each internal data registers are finished up interconnection in order, the stem connection I2C host of data register can
Data register data inside programming device are then continuously by I2C host read access.
Therefore, the 2nd access to n-th data byte that I2C host is continuously initiated, really in programming device
The temporary data information in portion is read out.
Each byte of N that I2C host one-time continuous is read, the I2C slave same internal address of the corresponding N number of business module of sequence
Data information.Realize the high efficiency I2C read operation to multiple channels I2C.
Until the I2C host read access of the central processing unit of main control module is completed, I2C host actively initiates to stop operation.
During stopping operation, the state machine of programming device is restored to first state.
Finally, the initiation of I2C host stops operation (STP), the I2C slave of all business modules listens to STP operation,
I2C access terminates.
So, by increasing programming device, the logic gates root that programming device includes newly in main control module
According to the state machine for the read access control programming device that the central processing unit of main control module issues, i.e. control main control module and each
Link between business module, in order to which the central processing unit of main control module passes through between main control module and each business module
Link carries out read access to business module simultaneously, thus, it is possible to utilizing less programming device logical resource, while can make
With the I2C Standard Interface that the central processing unit of main control module is universal, and the I2C access operation of operating specification, it realizes to distribution
The high efficiency read access of each business module of network communication equipment.
It should be noted that for the ease of clearly describing the technical solution of the embodiment of the present invention, in the embodiment of the present invention
In, it uses the printed words such as " first ", " second " and function and the essentially identical identical entry of effect or similar item is distinguished, ability
Field technique personnel are understood that the printed words such as " first ", " second " are not defined quantity and execution order.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
It with the specific work process of unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: that (English is complete for read-only memory
Claim: Read-Only Memory, English abbreviation: ROM), random access memory (full name in English: Random-Access
Memory, English abbreviation: RAM), the various media that can store program code such as magnetic or disk.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of data transmission method is applied to distributed network and communicates equipment, the distributed network communication equipment includes one
A main control module and N number of business module, N are the integer more than or equal to 2, which is characterized in that the main control module includes centre
Managing device and programming device, the programming device includes logic gates, and the logic gates described can be compiled for controlling
The state machine of journey device, which comprises
The central processing unit sends access request to the programming device, and the access request is write access or read access；
The logic gates controls the state machine of the programming device according to the access request, so that the main control module
Establish the link between each business module；
The central processing unit is by the link between the main control module and each business module simultaneously at least two
The business module accesses operation；
Wherein, the central processing unit is connect with the programming device by the first I2C bus, and the main control module passes through N
A I2C bus is connect with N number of business module, and the state machine of the programming device is in first state, first shape
State is total with N number of I2C bus and the first I2C by the realization of the first logical signal line inside the programming device
The logical connection of line, the programming device further include N-1 data register, and the access request is read access,
The logic gates includes: according to the state machine that the access request controls the programming device
The logic gates changes according to the state machine that the read access controls the programming device from the first state
For the second state, second state is to be realized and second inside the programming device by the first logical signal line
The logical connection of I2C bus and the first I2C bus, the 2nd I2C bus are to connect the main control module and first
The bus of business module, and a pair with N-1 I2C bus is realized by the second logical signal line to N logical signal line
One logical connection, the N-1 I2C bus are the bus of the main control module and the one-to-one connection of N-1 business module, and institute
State the second logical signal line to the N logical signal line respectively with the one-to-one logical connection of N-1 data register；
The central processing unit is by the link between the main control module and each business module simultaneously at least two
The business module operation that accesses includes:
The central processing unit is by the first I2C bus, the first logical signal line and the 2nd I2C bus to institute
It states the first business module and carries out read access, while each business module passes through corresponding institute in the N-1 business module
The I2C bus and logical signal line for stating data register connection send data to the corresponding data register.
2. the method according to claim 1, wherein the central processing unit and the programming device pass through the
The connection of one I2C bus, the main control module are connect by N number of I2C bus with N number of business module, the programming device
State machine be in first state, the first state be inside the programming device by the first logical signal line realize with
The logical connection of N number of I2C bus and the first I2C bus, the access request are write access,
The central processing unit is by the link between the main control module and each business module simultaneously to the business
The module operation that accesses includes:
The central processing unit by the first I2C bus, the first logical signal line and N number of I2C bus simultaneously
Write access is carried out at least two business modules；
The central processing unit is received by the first I2C bus, the first logical signal line and N number of I2C bus
The response that the business module of the write access is sent.
3. the method according to claim 1, wherein the central processing unit by the first I2C bus,
The first logical signal line and the 2nd I2C bus carry out read access, while the N-1 to first business module
The I2C bus and logical signal line that each business module is connected by the corresponding data register in business module will
Data are transmitted to after the corresponding data register, the method also includes:
The state machine that the logic gates controls the programming device is changed into the third state from second state, described
The third state is that the N-1 data register head and the tail are logically contiguous, and patrol inside the programming device by described first
Collect the logical connection of signal wire realization and the first I2C bus and the first data register；
The central processing unit continuously reads the data in the N-1 data register.
4. according to the method described in claim 3, it is characterized in that, continuously reading the N-1 number in the central processing unit
After the data in register, the method also includes:
The state machine that the logic gates controls the programming device is changed into the first state from the third state；
The central processing unit is by the first I2C bus, the first logical signal line and N number of I2C bus to institute
It states N number of business module and sends response.
5. method according to claim 2 or 4, which is characterized in that pass through the main control module in the central processing unit
Link between each business module simultaneously accesses before operation at least two business modules, the side
Method further include:
The central processing unit sends the address of business module, addresses the business module；
The central processing unit is received by the first I2C bus, the first logical signal line and N number of I2C bus
The response that the business module being addressed is sent.
6. a kind of distributed network communicates equipment, the distributed network communication equipment includes a main control module and N number of business
Module, N are the integer more than or equal to 2, which is characterized in that the main control module includes central processing unit and programming device, institute
Stating programming device includes logic gates, and the logic gates is used to control the state machine of the programming device,
The central processing unit, for sending access request to the programming device, the access request is write access or reading
Access；
The logic gates, for controlling the state machine of the programming device according to the access request, so that the master
Control the link that module is established between each business module；
The central processing unit is also used to through the link between the main control module and each business module simultaneously to extremely
Few two business modules access operation；
Wherein, the central processing unit is connect with the programming device by the first I2C bus, and the main control module passes through N
A I2C bus is connect with N number of business module, and the state machine of the programming device is in first state, first shape
State is total with N number of I2C bus and the first I2C by the realization of the first logical signal line inside the programming device
The logical connection of line, the programming device further include N-1 data register, and the access request is read access,
The logic gates, specifically for controlling the state machine of the programming device according to the read access from described first
State is changed into the second state, and second state is to be realized inside the programming device by the first logical signal line
With the logical connection of the 2nd I2C bus and the first I2C bus, the 2nd I2C bus is to connect the main control module
With the bus of the first business module, and by the second logical signal line to N logical signal line realize with N-1 I2C bus
One-to-one logical connection, the N-1 I2C bus is the total of the main control module and the one-to-one connection of N-1 business module
Line, and the second logical signal line to the N logical signal line respectively with the one-to-one logic of N-1 data register
Connection；
The central processing unit is specifically used for passing through the first I2C bus, the first logical signal line and described second
I2C bus to first business module carry out read access, while in the N-1 business module each business module by with
The I2C bus and logical signal line of its corresponding data register connection send data to the corresponding data register
Device.
7. distributed network according to claim 6 communicates equipment, which is characterized in that the central processing unit and it is described can
Programming device is connected by the first I2C bus, and the main control module is connect by N number of I2C bus with N number of business module,
The state machine of the programming device is in first state, and the first state is to patrol inside the programming device by first
The logical connection of signal wire realization and N number of I2C bus and the first I2C bus is collected, the access request is to write visit
It asks,
The central processing unit is specifically used for passing through the first I2C bus, the first logical signal line and N number of I2C
Bus carries out write access at least two business modules simultaneously；
The central processing unit is also used to total by the first I2C bus, the first logical signal line and N number of I2C
Line receives the response that the business module of the write access is sent.
8. distributed network according to claim 6 communicates equipment, which is characterized in that
The logic gates, the state machine specifically for controlling the programming device are changed into third from second state
State, the third state are that the N-1 data register head and the tail are logically contiguous, and pass through institute inside the programming device
State the logical connection of the first logical signal line realization and the first I2C bus and the first data register；
The central processing unit is also used to continuously read the data in the N-1 data register.
9. distributed network according to claim 8 communicates equipment, which is characterized in that
The logic gates, the state machine specifically for controlling the programming device are changed into the first state；
The central processing unit is also used to total by the first I2C bus, the first logical signal line and N number of I2C
Line sends response to N number of business module.
10. the distributed network according to claim 7 or 9 communicates equipment, which is characterized in that
The central processing unit is also used to send the address of business module, addresses the business module；
The central processing unit is also used to total by the first I2C bus, the first logical signal line and N number of I2C
Line receives the response that the business module being addressed is sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494157.3A CN106168934B (en) | 2016-06-29 | 2016-06-29 | A kind of data transmission method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610494157.3A CN106168934B (en) | 2016-06-29 | 2016-06-29 | A kind of data transmission method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106168934A CN106168934A (en) | 2016-11-30 |
| CN106168934B true CN106168934B (en) | 2018-12-14 |
Family
ID=58064633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610494157.3A Active CN106168934B (en) | 2016-06-29 | 2016-06-29 | A kind of data transmission method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106168934B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402899A (en) * | 2017-08-02 | 2017-11-28 | 湖南利能科技股份有限公司 | A kind of extended method of IIC interfaces |
| CN107239423A (en) * | 2017-08-02 | 2017-10-10 | 湖南利能科技股份有限公司 | A kind of device based on extension IIC interfaces |
| CN110764444A (en) | 2019-10-10 | 2020-02-07 | 苏州浪潮智能科技有限公司 | Control system, switch, and method for controlling execution device |
| CN112698614B (en) * | 2021-03-25 | 2021-06-15 | 之江实验室 | User side logic controller for reading and writing any byte |
| CN113641606B (en) * | 2021-08-09 | 2024-04-19 | 国家计算机网络与信息安全管理中心 | Access method, device and equipment of service board and readable storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581026A (en) * | 2004-05-19 | 2005-02-16 | 中兴通讯股份有限公司 | Device and method for operating multiple I2C sub device in communication equipment |
| CN101140556A (en) * | 2007-09-11 | 2008-03-12 | 中兴通讯股份有限公司 | Method and device for realizing accessing multiple I2C slave device by programmable device |
| CN102023953A (en) * | 2009-09-17 | 2011-04-20 | 研祥智能科技股份有限公司 | Control method of system having many inter-integrated circuit (I2C) buses |
| CN102193889A (en) * | 2011-06-08 | 2011-09-21 | 杭州国芯科技股份有限公司 | I2C bus repeater and read-write method thereof |
| CN103530261A (en) * | 2013-10-30 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Circuit and management method for access to multiple slaves having same I2C address |
| CN103577356A (en) * | 2013-11-06 | 2014-02-12 | 杭州华三通信技术有限公司 | Equipment and method for achieving IIC interface address extension |
| CN104199796A (en) * | 2014-09-18 | 2014-12-10 | 歌尔声学股份有限公司 | IIC communication method and embedded system for implementing IIC communication |
| CN105117319A (en) * | 2015-08-25 | 2015-12-02 | 烽火通信科技股份有限公司 | Method for realizing real-time monitoring of multi-channel MDIO (Management Data Input Output) devices based on FPGA |
| CN105279130A (en) * | 2015-10-22 | 2016-01-27 | 北方工业大学 | Method for operating multiple I2C devices with same address |
-
2016
- 2016-06-29 CN CN201610494157.3A patent/CN106168934B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581026A (en) * | 2004-05-19 | 2005-02-16 | 中兴通讯股份有限公司 | Device and method for operating multiple I2C sub device in communication equipment |
| CN101140556A (en) * | 2007-09-11 | 2008-03-12 | 中兴通讯股份有限公司 | Method and device for realizing accessing multiple I2C slave device by programmable device |
| CN102023953A (en) * | 2009-09-17 | 2011-04-20 | 研祥智能科技股份有限公司 | Control method of system having many inter-integrated circuit (I2C) buses |
| CN102193889A (en) * | 2011-06-08 | 2011-09-21 | 杭州国芯科技股份有限公司 | I2C bus repeater and read-write method thereof |
| CN103530261A (en) * | 2013-10-30 | 2014-01-22 | 广东威创视讯科技股份有限公司 | Circuit and management method for access to multiple slaves having same I2C address |
| CN103577356A (en) * | 2013-11-06 | 2014-02-12 | 杭州华三通信技术有限公司 | Equipment and method for achieving IIC interface address extension |
| CN104199796A (en) * | 2014-09-18 | 2014-12-10 | 歌尔声学股份有限公司 | IIC communication method and embedded system for implementing IIC communication |
| CN105117319A (en) * | 2015-08-25 | 2015-12-02 | 烽火通信科技股份有限公司 | Method for realizing real-time monitoring of multi-channel MDIO (Management Data Input Output) devices based on FPGA |
| CN105279130A (en) * | 2015-10-22 | 2016-01-27 | 北方工业大学 | Method for operating multiple I2C devices with same address |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106168934A (en) | 2016-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106168934B (en) | A kind of data transmission method and device | |
| CN100568211C (en) | Realize method and the device of a plurality of I2C of visit with programming device from device | |
| CN102866971B (en) | Device, the system and method for transmission data | |
| CN101208681B (en) | Communication system | |
| CN100566278C (en) | Slave unit in the communication system of using serial data transfer bus | |
| CN106959935A (en) | A kind of method that compatible I2C communications communicate with IPMB | |
| CN105573951B (en) | A kind of ahb bus interface system for data stream transmitting | |
| CN101425966A (en) | Network-on-chip and use network-on-chip carry out the method for data processing | |
| CN100533417C (en) | Method for transferring data of systems on chip, and direct memory access controller | |
| CN101719110A (en) | Real-time monitoring method of multipath I2C device in optical communication device | |
| CN102291423A (en) | Method for controlling physical layer (PHY) chip and control circuit | |
| CN102664953B (en) | High flux distributed type simulation support platform, system and simulation method based on high level architecture (HLA) | |
| CN106933753A (en) | The control method and device of intelligent interface card | |
| CN105117319A (en) | Method for realizing real-time monitoring of multi-channel MDIO (Management Data Input Output) devices based on FPGA | |
| CN105790830A (en) | Optical module in-situ detection method and device | |
| CN102636987B (en) | Dual control device | |
| CN104798010A (en) | Serial storage protocol compatible frame conversion, at least in part | |
| CN105359122B (en) | enhanced data transmission in multi-CPU system | |
| CN108280041A (en) | A kind of communication means and device of internal integrated circuit host | |
| CN105487403A (en) | Establishment of motion control system based on CAN and simulation modeling method | |
| CN105528314B (en) | A kind of data processing method and control equipment | |
| CN105718396B (en) | A kind of I of big data master transmissions2C bus units and its means of communication | |
| CN103995789B (en) | A kind of direct memory access realizes system and method | |
| CN102147739B (en) | Multi-mainboard server system and network-driving method thereof | |
| CN103699461A (en) | Double-host machine mutual redundancy hot backup method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |