CN107885687A - A kind of interface for being used to for FRU modules to be connected to I2C buses - Google Patents
A kind of interface for being used to for FRU modules to be connected to I2C buses Download PDFInfo
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- CN107885687A CN107885687A CN201711259375.XA CN201711259375A CN107885687A CN 107885687 A CN107885687 A CN 107885687A CN 201711259375 A CN201711259375 A CN 201711259375A CN 107885687 A CN107885687 A CN 107885687A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
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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
-
- 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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- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
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Abstract
The present invention provides a kind of interface for being used to for FRU modules to be connected to I2C buses, the interface it is determined that be connected thereto FRU module exceptions when, the FRU modules are connected to I2C buses with the identity of main frame, so as to which its status information is sent to the ChMC modules being connected in I2C buses by the FRU modules can, the status information can be sent to remote supervisory and controlling equipment by ChMC modules.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of interface for being used to for FRU modules to be connected to I2C buses.
Background technology
In practice, the physical distance of server of the keeper with being managed is possible to distant, and this just needs keeper
It is capable of the operation conditions of remote monitoring server（For example, mainboard temperature, rotation speed of the fan etc.）；In practice, server is possible to
It can break down, and for the ease of the management of keeper, it is necessary to even if the systemic-function circuit malfunctions of server, management
Member also can remotely know the status information of the electronic device in server.In order to realize the purpose, industry proposes IPMI
（Intelligent Platform Management Interface, IPMI）Interface specification, connect based on this
Mouth specification, even if the systemic-function circuit malfunctions of server, keeper also can remotely know the operation conditions of server
（For example, the status information of the electronic device such as temperature, voltage, fan and power supply）
As shown in figure 1, IPMI interface specifications are included with lower module：ChMC（Chassis Management Controller, machine
Frame Management Controller）Module, FRU（Field Replaceable Unit, Field Replaceable Unit）Module and IPMC
（Intelligent Protocol Message Controller, intelligence on-board Platform Management Controller）Module；In Fig. 1,
FRU modules are specially power supply and blower.Wherein, IPMC modules are used for the working condition for managing and monitoring its corresponding FRU module
And malfunction, and be connected with ChMC modules by I2C buses, when keeper passes through remote supervisory and controlling equipment（For example, remote monitoring
Machine passes through network connection to the server）Inquiry is sent to ChMC modules and during control command, and ChMC modules are by the inquiry and control
Order processed passes through I2C（Inter Integrated Circuit, internal integrated circuit）Bus is sent to IPMC modules, so as to
IPMC modules will be to its corresponding FRU module（For example, power supply or fan in Fig. 1）Operated accordingly, and by result
ChMC modules are sent to by I2C buses, ChMC modules send result to remote supervisory and controlling equipment afterwards, so as to which keeper just can
Know the operation conditions of server.
It is understood that I2C buses need the master slave relation of clear and definite equipment, in practice, based on ChMC modules are usual
Equipment, and IPMC modules are slave unit so that IPMC modules are when detecting its corresponding FRU module and occurring abnormal, Wu Faji
When report ChMC modules.
Therefore, design it is a kind of can active upload FRU abnormalities and for accessing the interfaces of I2C buses, just turn into one
Individual urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of interface for being used to for FRU modules to be connected to I2C buses.
In order to realize the foregoing invention first purpose, an embodiment of the present invention provides a kind of for FRU modules to be connected
To the interface of I2C buses, the interface is provided with input, the SCL for being connected to I2C buses for connecting FRU modules
Connecting line and SDA connecting lines, in addition to lower module：IPMC modules, control module and isolating device；The IPMC modules difference
Be electrically connected to input and control module, the control module by master clock line, main data line, from clock line and from data wire
Isolating device is electrically connected, the isolating device is also connected electrically to the SCL connecting lines and SDA connecting lines；The control
Module is used for the status information that the FRU modules are received from the IPMC modules, and according to described in status information determination
During FRU module exceptions, enable master clock line and main data line and control the IPMC modules as the master in I2C bus protocols
Machine is run；Otherwise, enable from clock line and from data wire and control the IPMC modules as in I2C bus protocols from
Machine is run.
As the further improvement of an embodiment of the present invention, the control module is determining institute according to the status information
When stating FRU module exceptions, the status information is sent to the ChMC modules being connected in the I2C buses.
As the further improvement of an embodiment of the present invention, the status information includes the temperature value of the FRU modules；
The control module determines that the FRU modules are abnormal according to the status information, including, it is default that the temperature value is not at first
During scope, the FRU modules are abnormal.
As the further improvement of an embodiment of the present invention, the status information includes the magnitude of voltage of the FRU modules；
The control module determines that the FRU modules are abnormal according to the status information, including, it is default that the magnitude of voltage is not at second
During scope, the FRU modules are abnormal.
An embodiment of the present invention provides a kind of interchanger, and the interchanger is provided with above-mentioned interface.
An embodiment of the present invention provides the switching method between a kind of main frame and slave in I2C bus protocols,
Comprise the following steps：Receive the status information of FRU modules；When determining the FRU modules exception according to the status information, control
The FRU modules are made as the main frame in I2C bus protocols to run；Otherwise, the FRU modules are controlled to be assisted as I2C buses
Slave in view is run.
As the further improvement of an embodiment of the present invention, the control FRU modules are as in I2C bus protocols
Main frame run, including：The FRU modules are controlled as the main frame in I2C bus protocols to run, and it is total by I2C
Line sends the status information.
As the further improvement of an embodiment of the present invention, the status information includes the temperature value of the FRU modules；
It is described to determine that the FRU modules are abnormal according to the status information, including, when the temperature value is not at the first preset range,
The FRU modules are abnormal.
As the further improvement of an embodiment of the present invention, the status information includes the magnitude of voltage of the FRU modules；
It is described to determine that the FRU modules are abnormal according to the status information, including, when the magnitude of voltage is not at the second preset range,
The FRU modules are abnormal.
An embodiment of the present invention provides the device switched between a kind of main frame and slave in I2C bus protocols,
Including with lower module：Status information receiving module, for receiving the status information transmitted by FRU modules；Status information handles mould
Block, for when determining the FRU modules exception according to the status information, controlling the FRU modules as I2C bus protocols
In main frame run；Otherwise, the FRU modules are controlled as the slave in I2C bus protocols to run.
Relative to prior art, the technical effects of the invention are that：The embodiment of the present invention provides a kind of be used for FRU modules
Be connected to the interface of I2C buses, the interface it is determined that be connected thereto FRU module exceptions when, by the FRU modules with main frame
Identity is connected to I2C buses, so as to which its status information is sent to the ChMC being connected in I2C buses by the FRU modules can
The status information can be sent to remote supervisory and controlling equipment by module, ChMC modules.
Brief description of the drawings
Fig. 1 is the structural representation of IPMI system of the prior art；
Fig. 2 is the structural representation for being used to FRU modules being connected to the interface of I2C buses in the embodiment of the present invention one；
Fig. 3 is that the flow of the switching method between the main frame and slave in I2C bus protocols in the embodiment of the present invention two is shown
It is intended to.
Embodiment
Below with reference to each embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are not
The limitation present invention, structure that one of ordinary skill in the art is made according to these embodiments, method or change functionally
Change and be all contained in protection scope of the present invention.
The embodiment of the present invention one provides a kind of interface for being used to for FRU modules to be connected to I2C buses, as shown in Fig. 2 institute
State interface and be provided with input 1, the SCL for being connected to I2C buses for connecting FRU modules 7（Serial Clock）Even
Wiring 5 and SDA（Serial Data）Connecting line 6, in addition to lower module：
IPMC modules 2, control module 3 and isolating device 4；SAMD20G16A chips may be used herein to realize IPMC modules 2
With the function of control module 3, the function of isolating device 4 can be realized using isolating chip LTC4303.
Here, IPMC modules 2 can realize that the institute in the IPMC modules in IPMI interface specifications is functional, i.e. IPMC modules
As the Management Controller for the FRU modules being connected on input 1, for managing FRU modules（For example, upper electricity, reset and voltage
Monitoring temperature etc.）, collect FRU modules on critical event（That is status information）, and it is sent to control module 3；But IPMC modules 2
Function without I2C EBIs, the function are realized by control module 3.
It is understood that in IPMI interface specifications, the circuit involved by IPMI is typically powered using independent power supply,
And it is electric prior on systemic-function circuit, therefore, when systemic-function circuit malfunctions, as long as electric on IPMI, IPMC moulds
Block 2, control module 3, isolating device 4 and other related modules can normally work.
According to IPMI interface specifications, FRU modules 7 need the function with hot plug, and therefore, isolating device 4 can be one
Two-way isolation buffers of special I2C, there is provided rise time accelerator so as to reduce the bus rise time of overload,
Pre-charge pressure is also equipped with the locked automatic detection of bus and recovers function, i.e., drive and protect with signal to reduce bus interference
The function of IPMC modules 2, control module 3 and isolating device 4.Here FRU modules 7 can be the electronic device on server, example
Such as：Fan, mainboard, power supply and network interface card etc..
The IPMC modules 2 are electrically connected respectively to input 1 and control module 3, the control module 3 and isolating device 4
Between be electrically connected by master clock line, main data line, from clock line and from data wire, the isolating device 4 is electrically connected to
The SCL connecting lines 5 and SDA connecting lines 6.It is understood that in actual use, it is necessary to connect FRU moulds by input 1
Block 7, SCL connecting lines 5 and SDA connecting lines 6 are electrically connected in I2C buses（I.e. SCL connecting lines 5 are connected in I2C buses
SCL lines, SDA connecting lines 6 are connected to the SDA line in I2C buses）.
The control module 3 is used for the status information that the FRU modules 7 are received from the IPMC modules 2, and according to institute
When stating status information and determining that the FRU modules 7 are abnormal, enable master clock line and main data line and control the IPMC modules 2 to make
Run for main frame in I2C bus protocols；Otherwise, enable from clock line and from data wire and control the IPMC modules 2 to make
Run for slave in I2C bus protocols.
Here, control module 3 can be a hardware module, software module or the module of a soft or hard combination.IPMC moulds
Block 2 is connected to FRU modules 7 by input 1, then IPMC modules 2 can just know the status information of FRU modules 7, IPMC modules
The status information can be sent to control module 3 by 2, so as to which control module 3 is received by the status information of FRU modules 7, afterwards,
IPMC modules 2 can be handled the status information accordingly；Control module 3 judges that FRU modules 7 are different according to the status information
Chang Shi, control module 3 are carried out the function of the main frame in I2C bus protocols, so as to which just control IPMC modules 2 are used as main frame to transport
OK；Otherwise, control module 3 is carried out the function of slave in I2C bus protocols, so as to which just control IPMC modules 2 are used as slave
Operation, this requires IPMC modules 2 can be with main frame or slave access I2C buses, and can switch therebetween.
Here, once FRU modules 7 break down, IPMC modules 2 can just be run with the identity of main frame, so as to IPMC moulds
The can of block 2 actively sends data using I2C buses, and then quickly can be sent to the status information and be connected to I2C
ChMC modules in bus so that keeper can rapidly know fault message.It is understood that control module 3 needs
It can realize that the institute of main frame in I2C bus protocols and slave is functional.
Here, starting master clock line and main data line can be：Master clock line and main data line are initialized, so as in I2C
In bus " insertion " one " main equipment ", meanwhile, disable from clock line and from data wire, so as to " be taken out " in I2C buses
One " slave unit "；Similar, starting from clock line and from data wire to be：Initialization is from clock line and from data
Line, so as in I2C buses " insertion " one " slave unit ", meanwhile, master clock line and main data line are disabled, so that in I2C
" taken out " in bus one " main equipment ".
Here, when IPMI starts, control module 3 can simulate " main equipment " and " slave unit " simultaneously, so as in I2C
One " main equipment " and one " slave unit " just " are inserted " in bus simultaneously.Therefore, starting master clock line and main data line can be with
For：It is somebody's turn to do " main equipment " to start actively to take I2C bus transmissioning datas, and is somebody's turn to do " slave unit " and is constantly in the shape that buffering area fills up
State, new data can not be received；Similar, starting from clock line and from data wire to be：" slave unit " is somebody's turn to do to start to receive
The command byte of other main equipments and to other described main equipment feedback responsion signal Acks（ACK=0）, and it is somebody's turn to do " main equipment " no
I2C buses can actively be taken.
Preferably, the control module 3 is according to the status information when determining that the FRU modules 7 are abnormal, to being connected to
ChMC modules in the I2C buses send the status information.Here, when control module 3 determines that FRU modules 7 are abnormal, meeting
IPMC modules are connected in I2C buses with the identity of main frame, therefore, control module 3 first takes I2C buses（The process needs
Follow the relevant regulations of I2C bus protocols）, afterwards, IPMC modules can sends state to ChMC modules by I2C buses and believed
Breath（The process needs to follow the relevant regulations of IPMI interface specifications）；ChMC modules can send state letter to remote supervisory and controlling equipment
Breath, so as to which keeper's can timely knows the operation conditions of the server.
Preferably, the status information includes the temperature value of the FRU modules 7；The control module 3 is according to the state
Information determines that the FRU modules 7 are abnormal, including, when the temperature value is not at the first preset range, the FRU modules 7 are different
Often.
In practice, electronic device has the operating temperature range of setting（That is the first preset range）, therefore, once temperature is not
During in the operating temperature range, then the electronic device is just easy to break down, it is necessary to notify keeper in time.
Preferably, the status information includes the magnitude of voltage of the FRU modules 7；The control module 3 is according to the state
Information determines that the FRU modules 7 are abnormal, including, when the magnitude of voltage is not at the second preset range, the FRU modules 7 are different
Often.In practice, electronic device has the voltage range of setting, therefore, once voltage is not at the voltage range（I.e. second is default
Scope）When, then the electronic device is just easy to break down, it is necessary to notify keeper in time.
The embodiment of the present invention additionally provides a kind of interchanger, in a switch, is provided with above-mentioned interface, and power board leads to
Cross the input 1 and be connected to the interface.
The embodiment of the present invention two provides the switching method between a kind of main frame and slave in I2C bus protocols, such as
Shown in Fig. 3, comprise the following steps：
Step 301：Receive the status information of FRU modules；
Step 302：When determining that the FRU modules 7 are abnormal according to the status information, control the FRU modules total as I2C
Main frame in wire protocol is run；Otherwise, the FRU modules are controlled as the slave in I2C bus protocols to run.
Here, as shown in Fig. 2 the input 1 in the interface in embodiment one is electrically connected into corresponding FRU modules 1,
SCL connecting lines 5 are connected to the SCL lines in I2C buses, and SDA connecting lines 6 are connected to SDA line and other moulds in I2C buses
Block（For example, ChMC modules etc.）One piece forms a complete IPMI system, and therefore, the control module 3 in interface will be held
Switching method in row the present embodiment.
Preferably, the control FRU modules are run as the main frame in I2C bus protocols, including：Described in control
FRU modules are run as the main frame in I2C bus protocols, and send the status information by I2C buses.Here, control
System 3 processed takes I2C buses and sends status information, that is, is sent to ChMC modules.
Preferably, the status information includes the temperature value of the FRU modules；It is described to determine institute according to the status information
FRU modules exception is stated, including, when the temperature value is not at the first preset range, the FRU modules are abnormal.
Preferably, the status information includes the magnitude of voltage of the FRU modules；It is described to determine institute according to the status information
FRU modules exception is stated, including, when the magnitude of voltage is not at the second preset range, the FRU modules are abnormal.
The embodiment of the present invention additionally provides the device switched between a kind of main frame and slave in I2C bus protocols, bag
Include with lower module：Status information receiving module, for receiving the status information transmitted by FRU modules；Status information processing module,
For when determining the FRU modules exception according to the status information, controlling the FRU modules as in I2C bus protocols
Main frame run；Otherwise, the FRU modules are controlled as the slave in I2C bus protocols to run.
It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity
For bright book as an entirety, the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can
With the other embodiment of understanding.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included in the scope of the protection.
Claims (10)
1. a kind of interface for being used to for FRU modules to be connected to I2C buses, the interface are provided with for connecting the defeated of FRU modules
Enter end, SCL connecting lines and SDA connecting lines for being connected to I2C buses, it is characterised in that also include with lower module：
IPMC modules, control module and isolating device；
The IPMC modules are electrically connected respectively to input and control module, and the control module passes through master clock line, master data
Line, it is electrically connected to isolating device from clock line and from data wire, the isolating device is also connected electrically to the SCL connecting lines
With SDA connecting lines；
The control module is used for the status information that the FRU modules are received from the IPMC modules, and according to the state
When information determines the FRU modules exception, enable master clock line and main data line and control the IPMC modules total as I2C
Main frame in wire protocol is run；Otherwise, enable from clock line and from data wire and control the IPMC modules total as I2C
Slave in wire protocol is run.
2. interface according to claim 1, it is characterised in that：
The control module according to the status information when determining the FRU modules exception, to being connected in the I2C buses
ChMC modules send the status information.
3. interface according to claim 1, it is characterised in that：
The status information includes the temperature value of the FRU modules；
The control module determines that the FRU modules are abnormal according to the status information, including, the temperature value is not at first
During preset range, the FRU modules are abnormal.
4. interface according to claim 1, it is characterised in that：
The status information includes the magnitude of voltage of the FRU modules；
The control module determines that the FRU modules are abnormal according to the status information, including, the magnitude of voltage is not at second
During preset range, the FRU modules are abnormal.
A kind of 5. interchanger, it is characterised in that：Interface described in claim any one of 1-4 is installed.
6. the switching method between a kind of main frame and slave in I2C bus protocols, it is characterised in that comprise the following steps：
Receive the status information of FRU modules；
When determining the FRU modules exception according to the status information, the FRU modules are controlled as in I2C bus protocols
Main frame run；Otherwise, the FRU modules are controlled as the slave in I2C bus protocols to run.
7. switching method according to claim 6, it is characterised in that the control FRU modules are assisted as I2C buses
Main frame in view is run, including：
The FRU modules are controlled as the main frame in I2C bus protocols to run, and the state is sent by I2C buses
Information.
8. switching method according to claim 6, it is characterised in that：
The status information includes the temperature value of the FRU modules；
It is described to determine that the FRU modules are abnormal according to the status information, including, the temperature value is not at the first preset range
When, the FRU modules are abnormal.
9. switching method according to claim 6, it is characterised in that：
The status information includes the magnitude of voltage of the FRU modules；
It is described to determine that the FRU modules are abnormal according to the status information, including, the magnitude of voltage is not at the second preset range
When, the FRU modules are abnormal.
10. the device switched between a kind of main frame and slave in I2C bus protocols, it is characterised in that including with lower module：
Status information receiving module, for receiving the status information transmitted by FRU modules；
Status information processing module, for when determining the FRU modules exception according to the status information, controlling the FRU
Module is run as the main frame in I2C bus protocols；Otherwise, the FRU modules are controlled as the slave in I2C bus protocols
To run.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259375.XA CN107885687A (en) | 2017-12-04 | 2017-12-04 | A kind of interface for being used to for FRU modules to be connected to I2C buses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259375.XA CN107885687A (en) | 2017-12-04 | 2017-12-04 | A kind of interface for being used to for FRU modules to be connected to I2C buses |
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| CN107885687A true CN107885687A (en) | 2018-04-06 |
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| CN201711259375.XA Withdrawn CN107885687A (en) | 2017-12-04 | 2017-12-04 | A kind of interface for being used to for FRU modules to be connected to I2C buses |
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2017
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| CN1602471A (en) * | 2001-12-14 | 2005-03-30 | 英特尔公司 | Computer system with dedicated system management buses |
| US20050111151A1 (en) * | 2003-11-25 | 2005-05-26 | Lam Don T. | Isolation circuit for a communication system |
| US8516089B2 (en) * | 2007-06-22 | 2013-08-20 | Oracle America, Inc. | Cluster system management |
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| CN104899170A (en) * | 2014-03-07 | 2015-09-09 | 中兴通讯股份有限公司 | Distributed intelligent platform management bus (IPMB) connection method and ATCA (Advanced Telecom Computing Architecture) machine frame |
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Application publication date: 20180406 |