CN108874417A - A kind of method for upgrading software and system of embedded device - Google Patents
A kind of method for upgrading software and system of embedded device Download PDFInfo
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- CN108874417A CN108874417A CN201810491895.1A CN201810491895A CN108874417A CN 108874417 A CN108874417 A CN 108874417A CN 201810491895 A CN201810491895 A CN 201810491895A CN 108874417 A CN108874417 A CN 108874417A
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Abstract
The invention discloses a kind of method for upgrading software of embedded device, the method includes：Compiling Property Name is arranged to resource data, and the corresponding resource data chained address of the compiling Property Name is set；To in source code execution code and resource data be compiled link respectively, the execution code is linked into an address distributed automatically, generate the executable program file for executing code, and the corresponding resource data of the compiling Property Name is linked into the resource data chained address, generate the executable program file of resource data；According to the executable program file of the executable program file for executing code and the resource data, generates execution code upgrade packet and resource data upgrade package is upgraded respectively, reduce the occupancy of memory space in software upgrade process.
Description
Technical field
The invention belongs to embedded device technology fields, the in particular to method for upgrading software and system of embedded device.
Background technique
With Intelligent office, smart home technology it is increasingly mature, the operating system that smart machine bottom uses is also increasingly
Diversification.Embedded OS has preferably been adapted at present due to the features such as its system kernel is small, specificity is strong, real-time is high
The powerful trend small in size of smart machine.Smart machine, such as Intelligent bracelet, smartwatch etc., due to cost and structure
Deng limitation, system function requirement can be met using small memory space as far as possible.Embedded software is generally one after compiling
Bin file.Common upgrading scheme, a kind of scheme are by the direct boil down to software upgrade package of this bin file, by new and old edition
Software upgrade package be sent to embedded device, software upgrading is carried out to new software upgrade package, thus needs very big deposit
Store up space；A kind of scheme is to carry out difference operation according to the new and old edition of software, is generated according to the difference of two versions smaller
Software upgrade package, and be sent to embedded device and carry out software upgrading, the program also occupies biggish memory space.
Therefore, how a kind of upgrading scheme of embedded device is provided, reduces the memory space that software upgrading occupies, becomes
Urgent problem to be solved.
Summary of the invention
In consideration of it, being reduced soft the purpose of the present invention is to provide a kind of method for upgrading software of embedded device and system
The occupancy of memory space in part escalation process.
According to foregoing invention purpose, the present invention provides a kind of method for upgrading software of embedded device, the method includes：
S1, compiling Property Name is set to resource data, and the corresponding resource data chain ground connection of the compiling Property Name is set
Location；
S2, in source code execution code and resource data be compiled link respectively, the execution code is linked to one
Automatically the address distributed generates the executable program file for executing code, and by the corresponding number of resources of the compiling Property Name
According to the resource data chained address is linked to, the executable program file of resource data is generated；
S3, according to the executable program file of the executable program file for executing code and the resource data, generation holds
Line code upgrade package and resource data upgrade package are upgraded respectively.
Preferably, the resource data includes the one or more of picture or character library.
Preferably, the resource data chained address includes initial address and termination address.
Preferably, the step S1 further includes：
Attribute is verified to the compiling Property Name corresponding resource data setting MD5.
Preferably, the step S2 further includes：
MD5 verification is carried out to the resource data, generates the first MD5 check value, and the first MD5 check value is written to institute
It states in the executable program file for executing code.
Preferably, further include after the step S3：
MD5 verification is carried out to the resource data in the resource data upgrade package, generates the 2nd MD5 check value；
The 2nd MD5 check value is compared with the first MD5 check value；
If consistent, the resource data upgrade package is effective；
Otherwise, the resource data upgrade package is invalid.
According to foregoing invention purpose, the present invention provides a kind of software update system of embedded device, the system comprises：
Setup module is arranged compiling Property Name to resource data, and the corresponding resource data of the compiling Property Name is arranged
Chained address；
Collector, in source code execution code and resource data be compiled link respectively, by the execution code chain
It is connected to an address distributed automatically, generates the executable program file for executing code, and the compiling Property Name is corresponding
Resource data links to the resource data chained address, generates the executable program file of resource data；
Upgraded module, according to the executable program of the executable program file for executing code and resource data text
Part, generates execution code upgrade packet and resource data upgrade package is upgraded respectively.
Preferably, the system also includes MD5 setup modules, for the corresponding resource data of the compiling Property Name
MD5 is set and verifies attribute.
Preferably, the system also includes MD5 correction verification module, for carrying out MD5 verification to the resource data, the is generated
One MD5 check value, and the first MD5 check value is written in the executable program file for executing code.
Preferably, the system also includes upgrade checkout module, to the resource data in the resource data upgrade package into
Row MD5 verification, generates the 2nd MD5 check value, the 2nd MD5 check value is compared with the first MD5 check value, if
Unanimously, then the resource data upgrade package is effective；Otherwise, the resource data upgrade package is invalid.
Compared with prior art, the method for upgrading software and system of embedded device provided by the invention has with following
Beneficial effect：The execution code and resource data of the executable program file of embedded device are split, and generated corresponding
It executes code upgrade packet and resource data upgrade package successively upgrades the code upgrade packet and resource during device upgrade
Data upgrade package reduces the occupancy of memory space in software upgrade process, brings better experience effect to user；When software becomes
Dynamic very little, for example, in escalation process, only accordingly executing code when only change executes code or only changes resource data
Upgrade package or resource data upgrade package, so that the occupancy of memory space in escalation process is more effectively reduced, by money
Source data carries out MD5 verification, guarantees the integrality of resource data in software upgrade process.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to a kind of the soft of embedded device
Above-mentioned characteristic, technical characteristic, advantage and its implementation of part upgrade method and system are further described.
Fig. 1 is a kind of flow chart of the method for upgrading software of embedded device of the present invention；
Fig. 2 is a kind of composed structure schematic diagram of the software update system of embedded device of the present invention.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".
As shown in Figure 1, according to one embodiment of present invention, a kind of method for upgrading software of embedded device, the side
Method includes：
S1, compiling Property Name is set to resource data, and the corresponding resource data chain ground connection of the compiling Property Name is set
Location；
S2, in source code execution code and resource data be compiled link respectively, the execution code is linked to one
Automatically the address distributed generates the executable program file for executing code, and by the corresponding number of resources of the compiling Property Name
According to the resource data chained address is linked to, the executable program file of resource data is generated；
S3, according to the executable program file of the executable program file for executing code and the resource data, it is raw
Upgraded respectively at execution code upgrade packet and resource data upgrade package.
The software source code of embedded device includes executing code and resource data.The resource data include picture or
The one or several kinds of character library.The resource data is generally stored as array formats in embedded systems.Writing source code
In, to the resource data setting compiling attribute in source code, and the title of a compiling attribute is set.By the way that resource data is arranged
It compiles Property Name and obtains the resource data in the source code to distinguish the resource data in source code.Present technology
In, when the source code of embedded device is compiled link, the executable program file of generation, in the executable program file
In, the execution code and resource data link together.A specific embodiment of the invention, sets the resource data
The code line for setting compiling attribute is as follows：
__attribute__ ((__section__(".AA_resource_data")))；
Compiling Property Name is .AA_resource_data.
The corresponding resource data chained address of the compiling Property Name is set.The resource data chained address includes
Beginning address and termination address.
A specific embodiment of the invention verifies attribute to the compiling Property Name corresponding resource data setting MD5,
And MD5 check value is preset to MD5 verification attribute.For example, setting compiling Property Name is .AA_ by following code line
The MD5 of the corresponding resource data of resource_data verifies attribute：
__attribute__ ((__section__(". AA_resource_md5")))；
Default MD5 check value is 0x30.
The source code of embedded device generates executable program file by compiling and linking.Compiling link process
Source code is converted into the executable program file that can be run on hardware, needs to be compiled and link.Compiling is exactly text
This form source code translation is the process of the file destination of machine language form.Link is that file destination, operating system are opened
Dynamic code and the library file used organize the formation of ultimately generate can load, the process of executable code.To in source code
It executes code and resource data is compiled link respectively.The execution code is linked into an address distributed automatically, is generated
The executable program file of code is executed, and the corresponding resource data of the compiling Property Name is linked into the resource data
Chained address generates the executable program file of resource data.Specifically, in carrying out link process, to execution code section
For, system assigns address to the execution code section automatically.It is for resource data, the compiling Property Name is corresponding
Resource data link to the resource data chained address, and the corresponding resource data of all compiling Property Names is connected
It compiles together, is placed on behind the execution code continuously, by the execution code and the resource data link position
It separates.For example, being realized by following code line：
AA_resource_start = .;
KEEP(*(.AA_resource_data))
AA_resource_end = .；
It is that link to initial address be AA_ to the corresponding resource data of AA by the compiling Property Name by above-mentioned code line
Resource_start, termination address are in the address space of AA_resource_end, to by resource data and execute code
Separately link.
A specific embodiment of the invention obtains the money when compilation of source code links and generates executable program file
Source data, and MD5 verification is carried out to the resource data, the first MD5 check value is generated, and the first MD5 check value is write
Enter into the executable program file file for executing code.For example, realizing the first MD5 check value by following code line
Write-in：
AA_resource_md5_start = .;
KEEP(*(.AA_resource_md5))
AA_resource_md5_end = .;
Specifically, pass through the temporary file generated when compiling, according to above-described embodiment.Calculating the initial address is AA_
Resource_start, termination address are the positional shift of AA_resource_end, obtain corresponding resource data, and calculate
First MD5 check value of the resource data, and the first MD5 check value of calculating is replaced into original preset MD5 check value.Institute
The first MD5 check value is stated to be placed in the executable program file for executing code.By calculating MD5 check value to resource data,
In subsequent software escalation process, MD5 verification is carried out to resource data, the integrality of resource data is verified.
According to the executable program file of the executable program file for executing code and the resource data, institute is generated
It states execution code upgrade packet and the resource data upgrade package is upgraded respectively.Software upgrading is being carried out to embedded device
When, successively upgrade the execution code upgrade packet and the resource data upgrade package, reduces memory space in software upgrade process
Occupancy.
A specific embodiment of the invention obtains the resource data liter in the software upgrade process of embedded device
The middle resource data of grade packet, and MD5 verification is carried out to the resource data, the 2nd MD5 check value is generated, and by described second
MD5 check value is consistent with the first MD5 check value, then the resource data upgrade package is effective resource data upgrade package,
Show that the resource data upgrade package is that correctly, otherwise the upgrading that can be used to carry out resource data in vain, and reacquires
Resource data upgrade package.
According to the technical solution, the execution code and resource data of the executable program file of embedded device are torn open
Point, and corresponding execution code upgrade packet and resource data upgrade package are generated, during device upgrade, successively upgrade the generation
Code upgrade package and resource data upgrade package reduce the occupancy of memory space in software upgrade process, bring better body to user
Test effect；When software variation very little, for example, when only change executes code or only changes resource data, in escalation process, only
Code upgrade packet or resource data upgrade package are accordingly executed, to more effectively reduce memory space in escalation process
It occupies, by carrying out MD5 verification to resource data, guarantees the integrality of resource data in software upgrade process.
Fig. 2 is one embodiment of the present invention, a kind of software update system of embedded device, the system comprises：
Setup module 20 is arranged compiling Property Name to resource data, and the corresponding number of resources of the compiling Property Name is arranged
According to chained address；
The execution code is linked to an address distributed automatically, generates the executable program for executing code by collector 21
File, and the corresponding resource data of the compiling Property Name is linked into the resource data chained address, generate number of resources
According to executable program file；
Upgraded module 22, according to the executable program of the executable program file for executing code and resource data text
Part, generates execution code upgrade packet and resource data upgrade package is upgraded respectively.
The software source code of embedded device includes executing code and resource data.The resource data include picture or
The one or several kinds of character library.The resource data is generally stored as array formats in embedded systems.In setup module,
Compiling Property Name is arranged to resource data, and the corresponding resource data chained address of the compiling Property Name is set.Pass through
Compiling Property Name is arranged to resource data and obtains the resource in the source code to distinguish the resource data in source code
Data.The corresponding resource data chained address of the compiling Property Name is set.The resource data chained address includes starting
Address and termination address.
A specific embodiment of the invention, the system also includes MD5 setup modules, corresponding to the compiling Property Name
Resource data setting MD5 verify attribute, and to the MD5 verification attribute preset MD5 verify default value.
The source code of embedded device generates executable program file by compiling and linking.Collector is held described
Line code links to an address distributed automatically, generates the executable program file for executing code, and the compiling is belonged to
Property the corresponding resource data of title link to the resource data chained address, generate the resource data executable program text
Part.Specifically, in carrying out link process, to executing for code section, system assigns address to the execution code automatically
Part.For resource data, the corresponding resource data of the compiling Property Name is linked into the resource data chain and is grounded
Location, and the corresponding resource data of all compiling Property Names is continuously compiled together, it is placed on the execution code
Behind, the execution code and the resource data link position are separated.
A specific embodiment of the invention, the system also includes MD5 correction verification modules, and generating in compilation of source code link can
When execution, the resource data is obtained, and the first MD5 verification is carried out to the resource data, obtain the first school MD5
Value is tested, and the first MD5 check value of calculating is replaced into original preset MD5 check value, and the first MD5 check value is written
Into the executable program file.
Upgraded module is according to the executable program of the executable program file for executing code and resource data text
Part.According to the executable program file of the executable program file for executing code and the resource data, held described in generation
Line code upgrade package and the resource data upgrade package are upgraded respectively.When carrying out software upgrading to embedded device, according to
The secondary upgrading execution code upgrade packet and the resource data upgrade package reduce memory space in software upgrade process and account for
With.
A specific embodiment of the invention, the system also includes upgrade checkout modules, obtain the resource data upgrading
Resource data in packet, and MD5 verification is carried out to the resource data, the 2nd MD5 check value is generated, by the 2nd school MD5
It tests value to be compared with the first MD5 check value, if unanimously, the resource data upgrade package is effective；Otherwise, the money
Source data upgrade package is invalid.
According to the technical solution, the execution code and resource data of the executable program file of embedded device are torn open
Point, and corresponding execution code upgrade packet and resource data upgrade package are generated, during device upgrade, successively execute generation
Code upgrade package and resource data upgrade package reduce the occupancy of memory space in software upgrade process, bring better body to user
Test effect；By carrying out MD5 verification to resource data, guarantee the integrality of resource data in software upgrade process.
In conclusion the present invention reduces the occupancy of memory space in software upgrade process, better experience is brought to user
Effect.
It should be noted that above-described embodiment can be freely combined as needed.The above is only of the invention preferred
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (10)
1. a kind of method for upgrading software of embedded device, which is characterized in that the method includes：
S1, compiling Property Name is set to resource data, and the corresponding resource data chain ground connection of the compiling Property Name is set
Location；
S2, in source code execution code and resource data be compiled link respectively, the execution code is linked to one
Automatically the address distributed generates the executable program file for executing code, and by the corresponding number of resources of the compiling Property Name
According to the resource data chained address is linked to, the executable program file of resource data is generated；
S3, according to the executable program file of the executable program file for executing code and the resource data, generation holds
Line code upgrade package and resource data upgrade package are upgraded respectively.
2. the method for upgrading software of embedded device as described in claim 1, which is characterized in that the resource data includes figure
The one or more of piece or character library.
3. the method for upgrading software of embedded device as described in claim 1, which is characterized in that the resource data chain ground connection
Location includes initial address and termination address.
4. the method for upgrading software of embedded device as described in claim 1, which is characterized in that the step S1 further includes：
Attribute is verified to the compiling Property Name corresponding resource data setting MD5.
5. the method for upgrading software of embedded device as claimed in claim 4, which is characterized in that the step S2 further includes：
MD5 verification is carried out to the resource data, generates the first MD5 check value, and the first MD5 check value is written to institute
It states in the executable program file for executing code.
6. the method for upgrading software of embedded device as claimed in claim 5, which is characterized in that also wrapped after the step S3
It includes：
MD5 verification is carried out to the resource data in the resource data upgrade package, generates the 2nd MD5 check value；
The 2nd MD5 check value is compared with the first MD5 check value；
If consistent, the resource data upgrade package is effective；
Otherwise, the resource data upgrade package is invalid.
7. a kind of software update system of embedded device, which is characterized in that the system comprises：
Setup module is arranged compiling Property Name to resource data, and the corresponding resource data of the compiling Property Name is arranged
Chained address；
Collector, in source code execution code and resource data be compiled link respectively, by the execution code chain
It is connected to an address distributed automatically, generates the executable program file for executing code, and the compiling Property Name is corresponding
Resource data links to the resource data chained address, generates the executable program file of resource data；
Upgraded module, according to it is described execute code executable program file and the resource data executable program file,
It generates execution code upgrade packet and resource data upgrade package is upgraded respectively.
8. the software update system of embedded device as claimed in claim 7, which is characterized in that the system also includes MD5
Setup module, for verifying attribute to the compiling Property Name corresponding resource data setting MD5.
9. the software update system of embedded device as claimed in claim 8, which is characterized in that the system also includes MD5
Correction verification module generates the first MD5 check value, and the first MD5 is verified for carrying out MD5 verification to the resource data
Value is written in the executable program file for executing code.
10. the software update system of embedded device as claimed in claim 9, which is characterized in that the system also includes liters
Grade correction verification module carries out MD5 verification to the resource data in the resource data upgrade package, the 2nd MD5 check value is generated, by institute
It states the 2nd MD5 check value to be compared with the first MD5 check value, if unanimously, the resource data upgrade package is effective；
Otherwise, the resource data upgrade package is invalid.
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