CN106126277A - Multi-microprocessor and the upgrade method of external memory system - Google Patents
Multi-microprocessor and the upgrade method of external memory system Download PDFInfo
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- CN106126277A CN106126277A CN201610438502.1A CN201610438502A CN106126277A CN 106126277 A CN106126277 A CN 106126277A CN 201610438502 A CN201610438502 A CN 201610438502A CN 106126277 A CN106126277 A CN 106126277A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
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Abstract
The present invention relates to multi-microprocessor and the upgrade method of external memory system, in order to solve, existing upgrade method operation is loaded down with trivial details, data cached takies host scm space, easily there is the problems such as version is chaotic in escalation process, this method comprises the following steps: after host scm receives upgrade command, it is judged that whether the upgrading mark of upgrading data file is labeled；Upgrading data in external equipment are copied to the upgrading data file that upgrading mark is not labeled by host scm；After duplication completes, the upgrading mark of upgrading data file is marked starting system of laying equal stress on by host scm；After host scm judges that the upgrading mark of upgrading data file is labeled, host scm, the upgrading data of caching from single-chip microcomputer and external memory write upgrading data file；After having upgraded, host scm, by the upgrading flag clear of upgrading data file, preserves version information, enters normal operating conditions.
Description
Technical field
The present invention relates to embedded computer field, more particularly, it relates to a kind of multi-microprocessor and external memory
The upgrade method of system.
Background technology
Along with Internet of Things and the development of Smart Home, and single-chip microcomputer in electric equipment products (Micro Controller Unit, micro-
Control unit, also referred to as single-chip microcomputer) application widely.For the product of module of software and hardware, a usual product by
Multiple different single-chip microcomputers and external memory composition, each several part uses ripe module, accelerates development process, decrease equipment
Between interference, but system therefore to become complexity more and more higher.Thus, product client is when debugging, and software upgrading difficulty increases
Greatly, the bad control of the version of each chip software.Secondly when upgrade maintenance, needing machine of tearing open to carry out updating operation, easily infringement is former
There is hardware.On March 17th, 2010, the Chinese invention patent CN101673209A of Granted publication disclosed a kind of multiple lists of upgrading
The method of sheet machine program, the method realizes software upgrading by external computer interface, it would be desirable to the program of upgrading is from outside
LOADER is loaded into FLASH internal applications district and the data buffer area of host scm, and upgrading is each from single-chip microcomputer the most one by one.But this rises
Level method is only applicable to the multiple singlechip equipment using common computer upgrading on same bus, and is not suitable for more complicated
System；If power-off or lose connection in escalation process, the situation that version is chaotic can be caused.Additionally, upgrading data are stored in
Host scm occupies the memory space of preciousness.
Summary of the invention
The problem existed for prior art, the present invention provides the complicated system including multi-microprocessor and external memory
The upgrade method of system.
The present invention solves the technical scheme of above-mentioned technical problem employing: multi-microprocessor and external memory system include
One host scm, at least one be connected with described host scm from single-chip microcomputer and at least one be connected with described host scm
External memory, it is characterised in that described external memory includes the upgrading data file for storing system upgrade data；
Described host scm exchanges data by communication interface with external equipment；
After host scm is connected the storage upgrading outside switching equipment of data by communication interface and is received upgrade command
Upgrade method comprises the following steps:
S1: host scm judges whether the upgrading mark of upgrading data file is labeled, if labeled, enters
Step S2, if labeled, enters step S4；
Upgrading data in external equipment are copied to the upgrading data external memory that upgrading mark is not labeled by S2: host scm
Reservoir；
S3: after having replicated, the upgrading mark of upgrading data file is marked starting system of laying equal stress on by host scm,
Enter step S1；
S4: host scm judges that the upgrading mark of upgrading data file is labeled, host scm write upgrading data
The upgrading data of caching in external memory, after host scm completes upgrading data write, receive from single-chip microcomputer and write main monolithic
The upgrading data that machine sends, upgrading data are write each external memory, complete upgrading by host scm；
S5: after having upgraded, host scm, by the upgrading flag clear of upgrading data file, preserves version information,
Prompting customer upgrade completes, and redirects entrance normal operating conditions.
Step S2 comprises the following steps:
S21: host scm judges whether communication interface has external equipment to access, if there being equipment to access, enters step
S22, accesses without equipment and then enters normal operating conditions；
S22: host scm reads the data of external equipment, and upgrading data are carried out version and completeness check, if school
Testing by then entering step S23, if do not passed through, not making to upgrade, enter normal operating conditions；
Upgrading data in external equipment are copied to the data buffer storage in data file of upgrading by S23: host scm
District.
If the reproduction process of step S23 is interrupted, host scm prompting user replicate failure and enter normal operating conditions；Continue
The method of level of continuing rising, for again receiving upgrade command, enters step S1～S5, covers the data that described step S23 has replicated.
Step S4 comprises the following steps:
S41: host scm is by the FLASH application area of the upgrading data write host scm in upgrading data file；
Upgrading data in upgrading data file are sent to each from single-chip microcomputer, respectively from single-chip microcomputer by S42: host scm
The upgrading data received are write from the FLASH application area of single-chip microcomputer；
Upgrading data in upgrading data file are write to each external memory respective regions by S43: host scm.
If step S41 upgrading data writing process interrupt, the upgrade method after system reboot for enter step S1, S4,
S5, cover described step S41 written into data.
If step S42 upgrading data writing process interrupt, the upgrade method after system reboot for enter step S1, S4,
S5, cover described step S41, S42 written into data.
If step S43 upgrading data writing process interrupt, the upgrade method after system reboot for enter step S1, S4,
S5, cover described step S41, S42, S43 written into data.
Communication interface includes USB interface, serial data interface or blue tooth interface.
Host scm and respectively between single-chip microcomputer, external memory according to actual communication needs, and pass through different pieces of information bus
Communication.
Upgrading data file is mass storage, can store the program of all processors and all external memorys simultaneously
Data needed for device.
In the upgrade method that the present invention provides, host scm can directly read the data of various mobile device, breaks away from dependence
Single, the Passive Mode of outer computer upgrading；Be not take up host scm inner space, be effectively utilized again simultaneously cheap outside
Deposit space, finally realize a kind of upgrading mode conveniently, safely.In escalation process, if it occur that power-off or lose connection etc.
During situation, after system reboot, whether host scm is labeled judgement according to upgrading mark is again upgraded or enters normal work
Program, it is ensured that all Single Chip Microcomputer (SCM) program and external memory versions of data are unified.Additionally, this upgrade method is applicable not only to use
The system of I2C bus communication, is also suitable for the complication system using multiple general line.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 contains multi-microprocessor and the overall structure schematic diagram of accumulator system；
Fig. 2 is the upgrade method flow chart of the present invention；
Fig. 3 is the flow chart of host scm and external device data exchange；
Fig. 4 is that during upgrading having no progeny continues the method flow diagram of upgrading.
Detailed description of the invention
Below, referring to the drawings the multi-microprocessor of the present invention and the upgrade method of external memory system are illustrated.
The upgrade method of the present invention be suitable for as shown in Figure 1 containing multi-microprocessor and the system of memorizer, wherein 3
Be connected with host scm respectively from single-chip microcomputer, SPI FLASH, EEPROM and other external memorys, host scm with from single-chip microcomputer
And external memory is by different data/address bus communications, each data/address bus not multiplexing and do not limit type, its data/address bus type
Including SPI, UART, I2C etc..Host scm is connected with the carrier with upgrading data by communication interface.
SPI FLASH is set as the external memory of upgrading data, and the memory space of the SPI FLASH of selection meets liter
Level program, upgrading data and the storage of its data.Host scm identifies SPI before being written and read SPI FLSAH operating
The flag bit of FLASH, is marked operation to the flag bit of SPI FLASH after having read and write.Such as: SPI FLASH is write
Enter and after data complete, its flag bit is marked, by complete for the upgrading digital independent in SPI FLASH, complete other micro-process
Device, memorizer upgrading after, the flag bit of SPI FLASH is reset.In the case of considering easy to use and cost performance, it is possible to
In selection system, other have the external memory memorizer as upgrading data packet of enough memory spaces.
Before carrying out updating operation, the approach such as terminal or high in the clouds that first passes through downloads upgrading data to external equipment
In.Host scm is by communication interface and external equipment exchange upgrading data, and the communication interface of host scm is USB interface, string
Row data-interface or blue tooth interface.According to the difference of the communication interface of host scm in system, outside storage upgrading data
The different mobile external equipments such as portion's equipment includes the USB flash disk using USB interface, the mobile phone of use blue tooth interface.
As in figure 2 it is shown, include following step for the above-mentioned upgrade method containing multi-microprocessor and the system of memorizer
Rapid:
S1: host scm judges whether the upgrading mark of upgrading data file is labeled, if labeled, enters
Step S2, if labeled, enters step S4；
Upgrading data in external equipment are copied to the upgrading data external memory that upgrading mark is not labeled by S2: host scm
Reservoir；
S3: after having replicated, the upgrading mark of upgrading data file is marked starting system of laying equal stress on by host scm,
Enter step S1；
S4: host scm judges that the upgrading mark of upgrading data file is labeled, host scm write upgrading data
The upgrading data of caching in external memory, after host scm completes upgrading data write, receive from single-chip microcomputer and write main monolithic
The upgrading data that machine sends, upgrading data are write each external memory, complete upgrading by host scm；
S5: after having upgraded, host scm, by the upgrading flag clear of upgrading data file, preserves version information,
Prompting customer upgrade completes, and redirects entrance normal operating conditions.
The enforcement of step S1 is specific as follows:
After host scm receives upgrade command, now host scm is not the most written and read operation and mark to SPI FLASH
Note operation, then the upgrading mark of SPI FLASH is not labeled.The upgrading mark of host scm identification SPI FLASH not by
Labelling, enters step S2.
As it is shown on figure 3, step S2 comprises the following steps:
S21: host scm judges whether communication interface has external equipment to access, if there being equipment to access, enters step
S22, accesses without equipment and then enters normal operating conditions；
S22: host scm reads the data of external equipment, and upgrading data are carried out version and completeness check, if school
Testing by then entering step S23, if do not passed through, not making to upgrade, enter normal operating conditions；
Upgrading data in external equipment are copied to the data buffer storage in data file of upgrading by S23: host scm
District.
Specific as follows: after the upgrading mark of host scm identification SPI FLASH is not labeled, it is judged that whether its communication interface
Whether have external mobile device to connect, have USB flash disk to insert including USB interface and connect, whether blue tooth interface has other bluetooth module to connect
Enter.Access without external equipment, then normally enter the application program of work.If having external equipment to access, single-chip microcomputer
Read the content in external equipment by communication interface, upgrading data are carried out version and completeness check, if verifying obstructed
Cross, abandon upgrading, enter the application program of normal work.
If user needs to upgrade system, then USB flash disk has been inserted or set up bluetooth even with mobile phone by user
Connecing, host scm reads the data content in USB flash disk or mobile phone, if updated contents is contained in the inside, then enters data check.Verification
By rear, upgrading data are copied to the data buffer area external memory SPI FLASH, not shadow from external equipment by host scm
Ring the application data that SPI FLASH normally works.The most do not carry out data renewal.
The enforcement of step S3 is specific as follows: after upgrading data replicate, the host scm upgrading mark to SPI FLASH
It is marked, and restarting systems, again identify that the upgrading mark of SPI FLASH, the upgrading mark of SPI FLASH now
It is labeled, has entered step S4.
The escalation process of step S4 comprises the following steps:
S41: host scm is by the FLASH application area of the upgrading data write host scm in upgrading data file；
Upgrading data in upgrading data file are sent to each from single-chip microcomputer, respectively from single-chip microcomputer by S42: host scm
The upgrading data received are write from the FLASH application area of single-chip microcomputer；
Upgrading data in upgrading data file are write to each external memory respective regions by S43: host scm.
After the write of host scm in system and all data that all complete to upgrade from single-chip microcomputer, external memory, whole system
The upgrade job of system completes, host scm and all version unifications from single-chip microcomputer, external memory.
In step s 5 after all single-chip microcomputers in whole system and external memory have been upgraded, host scm is by SPI
The upgrading flag clear of FLASH, preserves version information and points out customer upgrade to complete.SPI FLASH is in the state of not being labeled,
After system reboot, will not be eliminated and repeatedly upgrading because of the upgrading mark of SPI FLASH.
The system after upgrading that completes enters normal operational application, and system now is the most promoted to be completed, and uses brand-new
Data and program work.
As shown in Figure 4, communicating interrupt in the data reproduction process of above-mentioned steps S23, host scm prompting user replicate
Failure also enters normal operating conditions；The method continuing upgrading comprises the steps:
Host scm judges that the upgrading mark of upgrading data file is not labeled；
Upgrading data in external equipment are copied to the upgrading data external memory that upgrading mark is not labeled by host scm
Device, the data that covering step S23 has replicated；
After duplication completes, the upgrading mark of upgrading data file is marked starting system of laying equal stress on by host scm；
Host scm judges that the upgrading mark of upgrading data file is labeled, host scm write upgrading data external memory
The upgrading data of caching in reservoir, after host scm completes upgrading data write, receive from single-chip microcomputer and external memory and write
The upgrading data that host scm sends, complete upgrading；
After having upgraded, host scm, by the upgrading flag clear of upgrading data file, enters normal operating conditions.
Specific as follows, interrupt owing to the data of S23 replicate, so host scm not upgrading mark to SPI FLASH
It is marked operation.When system restarts, after the upgrading mark of host scm identification SPI FLASH is not labeled, by data
Again copy to, in SPI FLASH, before covering, replicate the data of interruption, after having replicated, its upgrading mark be marked,
I.e. enter step S1～S5, complete upgrading.
As shown in Figure 4, communicating interrupt in the escalation process of above-mentioned steps S41, the upgrade method after system reboot includes
Following steps:
Host scm judges that the upgrading mark of upgrading data file is labeled；
After host scm judges that the upgrading mark of upgrading data file is labeled, upgrading host scm, from single-chip microcomputer
And external memory, cover the upgrading data that S41 has been written into；
After having upgraded, host scm, by the upgrading flag clear of upgrading data file, enters normal operating conditions.
As shown in Figure 4, in the escalation process of above-mentioned steps S42, the upgrade method of communicating interrupt comprises the steps:
Host scm judges that the upgrading mark of upgrading data file is labeled；
After host scm judges that the upgrading mark of upgrading data file is labeled, upgrading host scm, from single-chip microcomputer
And external memory, covering step S41, S42 written into upgrading data.
After having upgraded, host scm, by the upgrading flag clear of upgrading data file, enters normal operating conditions.
As shown in Figure 4, in the escalation process of above-mentioned steps S43, the upgrade method of communicating interrupt comprises the steps:
Host scm judges that the upgrading mark of upgrading data file is labeled；
After host scm judges that the upgrading mark of upgrading data file is labeled, upgrading host scm, from single-chip microcomputer
And external memory；Covering step S41, S42, S43 written into data.
After having upgraded, host scm, by the upgrading flag clear of upgrading data file, enters normal operating conditions.
Specific as follows: owing to upgrading data have been replicated in SPI FLASH, host scm, from single-chip microcomputer or other
Memorizer in escalation process, communicating interrupt, upgrade unsuccessfully.After system restarts, host scm identification SPI FLASH upgrades
Flag bit is the most labeled, i.e. upgrading data have stored in SPI FLASH.Host scm start to upgrade successively self, from list
Sheet machine and other storage peripheral data, i.e. enter step S1, S4, S5, the data being not fully complete of upgrading before covering, it is ensured that main monolithic
Machine, version unification after single-chip microcomputer and other external memorys are upgraded again.
In the upgrade method that the present invention provides, host scm can directly read the data of various mobile device, breaks away from dependence
Single, the Passive Mode of outer computer upgrading；Be not take up host scm inner space, be effectively utilized again simultaneously cheap outside
Deposit space, finally realize a kind of upgrading mode conveniently, safely.In escalation process, if it occur that power-off or lose connection etc.
During situation, after system reboot, whether host scm is labeled judgement according to upgrading mark is again upgraded or enters normal work
Program, it is ensured that all Single Chip Microcomputer (SCM) program and external memory versions of data are unified.Additionally, this upgrade method is applicable not only to use
The system of I2C bus communication, is also suitable for the complication system using multiple general line.
It should be understood that above example only have expressed the preferred embodiment of the present invention, it describes more concrete and detailed
Carefully, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention；It should be pointed out that, for the common skill of this area
For art personnel, without departing from the inventive concept of the premise, above-mentioned technical characterstic can be carried out independent assortment, it is also possible to do
Going out some deformation and improvement, these broadly fall into protection scope of the present invention；Therefore, all done with scope of the invention as claimed
Equivalents and modification, all should belong to the covering scope of the claims in the present invention.
Claims (10)
1. multi-microprocessor and a upgrade method for external memory system, described system include a host scm, at least one
Individual and described host scm be connected from single-chip microcomputer and at least one external memory being connected with described host scm, its feature
Being, described external memory includes the upgrading data file for storing system upgrade data；Described host scm passes through
Each communication interface exchanges data with external equipment；
Host scm connects the outside switching equipment of storage upgrading data by communication interface, receives the upgrading side after upgrade command
Method comprises the following steps:
S1: host scm judges whether the upgrading mark of upgrading data file is labeled, if labeled, enters step
S2, if labeled, enters step S4；
Upgrading data in external equipment are copied to the upgrading data external memory that upgrading mark is not labeled by S2: host scm
Device；
S3: after having replicated, the upgrading mark of upgrading data file is marked starting system of laying equal stress on by host scm, enters
Step S1；
S4: host scm judges that the upgrading mark of upgrading data file is labeled, host scm write upgrading data external memory
The upgrading data of caching in reservoir, after host scm completes upgrading data write, receive from single-chip microcomputer and write host scm and send out
The upgrading data sent, upgrading data are write each external memory, complete upgrading by host scm；
S5: after having upgraded, host scm, by the upgrading flag clear of upgrading data file, preserves version information, prompting
Customer upgrade completes, and redirects entrance normal operating conditions.
Upgrade method the most according to claim 1, it is characterised in that described step S2 comprises the following steps:
S21: host scm judges whether communication interface has external equipment to access, if there being equipment to access, enters step S22, as
Fruit does not has equipment access then to enter normal operating conditions；
S22: host scm reads the data of external equipment, and upgrading data are carried out version and completeness check, if verification is logical
Crossing then entrance step S23, if do not passed through, not making to upgrade, enter normal operating conditions；
Upgrading data in external equipment are copied to the data buffer area in data file of upgrading by S23: host scm.
Method the most according to claim 2, it is characterised in that if described step S23 reproduction process is interrupted, host scm
Prompting user replicates failure and enters normal operating conditions；The method continuing upgrading is again to receive upgrade command, enters step
S1～S5, covers the data that described step S23 has replicated.
Upgrade method the most according to claim 1, it is characterised in that described step S4 comprises the following steps:
S41: host scm is by the FLASH application area of the upgrading data write host scm in upgrading data file；
Upgrading data in upgrading data file are sent to each from single-chip microcomputer, respectively from single-chip microcomputer connecing by S42: host scm
The upgrading data received write from the FLASH application area of single-chip microcomputer；
Upgrading data in upgrading data file are write to each external memory respective regions by S43: host scm.
Upgrade method the most according to claim 4, it is characterised in that if described step S41 upgrading data writing process
Interrupt, the upgrade method after system reboot for enter step S1, S4, S5, cover described step S41 written into data.
Upgrade method the most according to claim 4, it is characterised in that if described step S42 upgrading data writing process
Interrupt, the upgrade method after system reboot for enter step S1, S4, S5, cover described step S41, S42 written into data.
Upgrade method the most according to claim 4, it is characterised in that if described step S43 upgrading data writing process
Interrupt, the upgrade method after system reboot for enter step S1, S4, S5, cover described step S41, S42, S43 written into number
According to.
Upgrade method the most according to claim 1 and 2, it is characterised in that described communication interface includes USB interface, serial
Data-interface or blue tooth interface.
Upgrade method the most according to claim 1, it is characterised in that described host scm with each from single-chip microcomputer, external memory
According to actual communication needs between device, and by different pieces of information bus communication.
Upgrade method the most according to claim 1, it is characterised in that described upgrading data file is that Large Copacity is deposited
Reservoir, can store the data needed for the program of all processors and all external memorys simultaneously.
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| CN110264452A (en) * | 2019-06-18 | 2019-09-20 | 江苏通佑视觉科技有限公司 | A kind of workpiece inspection method, device, equipment and storage medium |
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