CN106708592A - Microcontroller and code programming method for microcontroller - Google Patents
Microcontroller and code programming method for microcontroller Download PDFInfo
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- CN106708592A CN106708592A CN201710056600.3A CN201710056600A CN106708592A CN 106708592 A CN106708592 A CN 106708592A CN 201710056600 A CN201710056600 A CN 201710056600A CN 106708592 A CN106708592 A CN 106708592A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
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Abstract
The invention discloses a microcontroller and a code programming method for the microcontroller. The microcontroller comprises a communication interface, a first program storage unit, a second program storage unit and a program storage control unit, wherein the communication interface is used for being communicated with an external processing unit, the first program storage unit is used for storing run code files, the second program storage unit is used for storing code files as same as the run code files, the program storage control unit is used for controlling the communication interface to be connected with the first program storage unit or the second program storage unit. The microcontroller has the advantages that when the first program storage unit is damaged, automatic switching to the second program storage unit is achieved, so that the reject ratio of MCU chips is decreased; through programming once, the standby second program storage unit is formed, reprogramming is not needed when the first program storage unit is damaged, and the number of programming times is decreased.
Description
Technical field
Burnt the present invention relates to Internet technical field, more particularly to a kind of microcontroller and the code for microcontroller
Recording method.
Background technology
Micro-control unit (Microcontroller Unit；MCU), also known as one chip microcomputer or single-chip microcomputer, it is
The frequency of central processing unit and specification are done appropriate reduction, and by internal memory, counter, USB, A/D conversion, UART, PLC, DMA etc.
Perimeter interface, or even LCD drive circuits are all incorporated on one chip, form the computer of chip-scale, are different applied fields
Various combination control is done in conjunction.Such as mobile phone, PC periphery, remote control, automotive electronics, industrial stepper motor, robotic arm
Control etc., the figure of all visible MCU.MCU includes built-in program storage, the program for storing MCU execution.Program is deposited
Reservoir can be read-only storage, or flash memory, very extensive, the existing burn recording software, in burning of current flash memory application
When code is burnt to the position of flash, it is erasable or when in adverse circumstances by being repeated several times in flash memory, hold very much
It is fragile, and the yield of onboard flash memory is the key factor for directly affecting MCU yields.In order to improve the yield of MCU, it is necessary to reduce
Influence of the fraction defective of onboard flash memory to MCU.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide one kind overcome above mentioned problem or at least in part solve on
State the microcontroller and the method for burn-recording for the microcontroller of problem.
According to an aspect of the present invention, there is provided a kind of microcontroller, including：
Communication interface, for being communicated with external processing unit；
First program storage unit (PSU), for storage running code file；
Second program storage unit (PSU), for storing and above-mentioned code file identical code file；
Program storage control unit, for control communication interface to be connected with first program storage unit (PSU) or with it is described
Second program storage unit (PSU) is connected.
Optionally, described program storage control unit includes：
Detection sub-unit, during for electricity on the microcontroller, detects the word of the first program storage unit (PSU) storage
Joint number amount；
Comparing unit, byte quantity and predetermined threshold for that will be detected are compared, if both are consistent, control
The communication interface is connected with first program storage unit (PSU), if it is inconsistent, controlling the communication interface with described
Two program storage unit (PSU)s are connected.
The present invention also provides a kind of code method for burn-recording for the microcontroller, it is characterised in that the method includes：
Send code file to microcontroller；
Byte in code file is burnt to by the first program storage unit (PSU) by program storage control unit；
Byte in code file is burnt to by the second program storage unit (PSU) by program storage control unit.
Optionally, the byte in code file is burnt to the first program storage unit (PSU)；Byte in code file is burnt
Record to the first program storage unit (PSU) and specifically include：The byte of predetermined quantity in code file is burnt to the first program storage list by S1
Unit, while the byte of predetermined quantity is burnt into the second program storage unit (PSU)；S2. repeating said steps S1, in sequence burning
Until the code in the code file is all burnt to the first program storage unit (PSU) and the second program storage unit (PSU).
Optionally, the byte of the predetermined quantity is 1 byte.
Optionally, the byte in code file is burnt to the first program storage unit (PSU)；Byte in code file is burnt
Record to the second program storage unit (PSU), specifically include：Byte in code file is burnt to the first program storage unit (PSU)；By institute
State after the byte in code file is burnt to the first program storage unit (PSU), then the byte in code file is burnt to the second journey
Sequence memory cell.
The technical scheme provided in the embodiment of the present application, at least has the following technical effect that or advantage：
By in MCU built-in flash memory design into daul-memory structure so that when the first program storage unit (PSU) unit breaks down,
The second program storage unit (PSU) unit is automatically switched to, so as to reduce the fraction defective of MCU chip.
By a burning, the second standby program storage unit (PSU) is formed, when the first program storage unit (PSU) breaks down, be not required to
Will burning again, reduce burning number of times.
In the embodiment of the present application, described above is only the general introduction of technical solution of the present invention, in order to better understand
Technological means of the invention, and being practiced according to the content of specification, and in order to allow above and other mesh of the invention
, feature and advantage can become apparent, below especially exemplified by specific embodiment of the invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 shows the structure chart of microcontroller proposed by the present invention；
Fig. 2 shows the flow chart of code method for burn-recording proposed by the present invention；
Fig. 3 shows a kind of specific code burning mode proposed by the present invention；
Fig. 4 shows a kind of code burning mode of specific embodiment proposed by the present invention.
Specific embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.Conversely, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
The application provides a kind of microcontroller, as shown in figure 1, it includes：
Communication interface 100, for being communicated with external processing unit；
First program storage unit (PSU) 200, for storage running code file；
Second program storage unit (PSU) 300, for storing and above-mentioned code file identical code file；
Program storage control unit 400, for control communication interface to be connected with first program storage unit (PSU) or with
The second program storage unit (PSU) connection.
Initially for testing chip, the general principle of JTAG is to define a TAP in device inside to JTAG
(Test Access Port；Test accesses mouth) internal node is tested by special jtag test instrument.JTAG is surveyed
Examination allows multiple devices to be cascaded by jtag interface, forms a JTAG chain, can realize testing each device respectively.
Nowadays, jtag interface is also commonly used for realizing ISP (In-System Programmer, in-system programming), and the devices such as FLASH are entered
Row burning.In view of the burning for entering line code to described program memory when MCU chip is manufactured, MCU is deposited when upper electric to program
The test of reservoir, the above-mentioned preferred jtag interface of communication interface, certain other communication interfaces also can be used.
On each MCU during electricity, program storage control unit is detected to the first program storage unit (PSU), according to testing result
Determine whether to switch to the communication interface and be connected with the second program storage unit (PSU).The application is by by microcontroller
Program storage is designed to daul-memory structure, thus internally hardware detection to first program memory change when, automatically
It is switched to the second program storage unit (PSU).The structure design of this dual-memory can reduce the fraction defective of chip production.
The byte number of the code stored in actual program storage unit (PSU) is usually fixed, if program storage unit (PSU)
The byte quantity of middle storage is changed, it is believed that code has been damaged.Implementation method, described program are preferably as one kind
Storage control unit includes：
Detection sub-unit, during for electricity on the microcontroller, detects the word of the first program storage unit (PSU) storage
Joint number amount；
Comparing unit, byte quantity and predetermined threshold for that will be detected are compared, if both are consistent, control
The communication interface is connected with first program storage unit (PSU), if it is inconsistent, controlling the communication interface with described
Two program storage unit (PSU)s are connected.
By the embodiment, can quickly and efficiently determine very much whether the first program storage unit (PSU) occurs bad, in hair
In the case that life is bad, the second program storage unit (PSU) is automatically switched to, so as to ensure MCU chip normal work.
In order to realize the dual program storage organization of above-mentioned microcontroller, as shown in Fig. 2 the application also proposed a kind of code
Method for burn-recording, specifically includes：
S01. code file to the microcontroller is sent；
S02. the byte in code file is burnt to by the first program storage unit (PSU) by program storage control unit；
S03. the byte in code file is burnt to by the second program storage unit (PSU) by program storage control unit.
The method for burn-recording can realize that burn recording software is operated on PC by burn recording software.
As a kind of burning mode, the byte in code file is burnt to the first program storage unit (PSU)；By code file
In byte be burnt to the first program storage unit (PSU) and specifically may include：The byte of predetermined quantity in code file is burnt to by S1
One program storage unit (PSU), while the byte of predetermined quantity is burnt into the second program storage unit (PSU)；S2. repeating said steps S1,
Burning in sequence is all burnt to the first program storage unit (PSU) and the second program storage until the code in the code file
Unit.
The specific embodiment realized according to the burning mode is as shown in Figure 4：
S21. burn recording software is run；
S22. BIN files are opened；
S23. one byte of reading from BIN files is instructed；
S24. judge whether to read successfully；
If S25. read successfully, this byte that will be read is burnt to the first program storage unit (PSU)；
If S26. do not read successfully, the burn recording software is closed；
S27. after the step S25, the byte is burnt to the second program storage unit (PSU), repeats execution step
S3, until closing the burn recording software.
In this embodiment, by the way of byte-by-byte burning, and the first program storage unit (PSU) is deposited with the second program
Storage unit crossings carries out burning, and the first program storage unit (PSU) burning is finished, and then the second program storage unit (PSU) is also complete with regard to burning
Finish, recordable time can be saved by the embodiment.The side per several byte burnings can also be utilized in the embodiment of deformation
Formula replaces the mode of byte-by-byte burning, and this can be determined by the hardware condition of equipment.
As another burning mode, the byte in code file is burnt to the first program storage unit (PSU)；By code text
Byte in part is burnt to the second program storage unit (PSU), specifically includes：Byte in code file is burnt into the first program to deposit
Storage unit；After the byte in the code file is burnt into the first program storage unit (PSU), then by the word in code file
Section is burnt to the second program storage unit (PSU).
The time of this burning mode burning is slightly long, but does not need burning hardware in the first program storage unit (PSU) and second
Toggled between program storage unit (PSU), reduce the consume of burning hardware.
The method of the burning proposed by the application, can with one-time programming, while code is burnt into 2 memory cell,
So when first program memory cell is damaged, it is not necessary to re-start burning, be directly switch to the second program storage unit (PSU)
.
Based on the microcontroller described in the embodiment of the present application and the method for burn-recording for the microcontroller, this area institute
Category technical staff will appreciate that other specific embodiments and its various change form of the microcontroller of the present embodiment, all belong to
In the scope to be protected of the application.
The technical scheme provided in the embodiment of the present application, at least has the following technical effect that or advantage：
Algorithm and display be not inherently related to any certain computer, virtual system or miscellaneous equipment provided herein.
Various general-purpose systems can also be used together with based on teaching in this.As described above, construct required by this kind of system
Structure be obvious.Additionally, the present invention is not also directed to any certain programmed language.It is understood that, it is possible to use it is various
Programming language realizes the content of invention described herein, and the description done to language-specific above is to disclose this hair
Bright preferred forms.
In specification mentioned herein, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be put into practice in the case of without these details.In some instances, known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify one or more that the disclosure and helping understands in each inventive aspect, exist
Above to the description of exemplary embodiment of the invention in, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The application claims of shield features more more than the feature being expressly recited in each claim.More precisely, such as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, and wherein each claim is in itself
All as separate embodiments of the invention.
Those skilled in the art are appreciated that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Unit or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, can use any
Combine to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so disclosed appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit is required, summary and accompanying drawing) disclosed in each feature can the alternative features of or similar purpose identical, equivalent by offer carry out generation
Replace.
Although additionally, it will be appreciated by those of skill in the art that some embodiments in this include institute in other embodiments
Including some features rather than further feature, but the combination of the feature of different embodiments means in the scope of the present invention
Within and form different embodiments.For example, in the following claims, embodiment required for protection it is any it
One mode can use in any combination.
All parts embodiment of the invention can be realized with hardware, or be run with one or more processor
Software module realize, or with combinations thereof realize.It will be understood by those of skill in the art that can use in practice
Microprocessor or digital signal processor (DSP) are come in realizing gateway according to embodiments of the present invention, proxy server, system
Some or all parts some or all functions.The present invention is also implemented as performing side as described herein
Some or all equipment or program of device (for example, computer program and computer program product) of method.It is such
Realize that program of the invention can be stored on a computer-readable medium, or there can be the shape of one or more signal
Formula.Such signal can be downloaded from internet website and obtained, or be provided on carrier signal, or with any other shape
Formula is provided.
It should be noted that above-described embodiment the present invention will be described rather than limiting the invention, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol being located between bracket should not be configured to limitations on claims.Word "comprising" is not excluded the presence of not
Element listed in the claims or step.Word "a" or "an" before element is not excluded the presence of as multiple
Element.The present invention can come real by means of the hardware for including some different elements and by means of properly programmed computer
It is existing.If in the unit claim for listing equipment for drying, several in these devices can be by same hardware branch
To embody.The use of word first, second, and third does not indicate that any order.These words can be explained and run after fame
Claim.
Claims (7)
1. a kind of microcontroller, it is characterised in that including：
Communication interface, for being communicated with external processing unit；
First program storage unit (PSU), for storage running code file；
Second program storage unit (PSU), for storing and above-mentioned code file identical code file；
Program storage control unit, for controlling communication interface to be connected with first program storage unit (PSU) or with described second
Program storage unit (PSU) is connected.
2. microcontroller according to claim 1, is further characterized in that, described program storage control unit is in each MCU
When upper electric, the first program storage unit (PSU) is detected, according to testing result determine whether by the communication interface switch to
Second program storage unit (PSU) is connected.
3. microcontroller according to claim 2, is further characterized in that, described program storage control unit includes：
Detection sub-unit, during for electricity on the microcontroller, detects the byte number of the first program storage unit (PSU) storage
Amount；
Comparing unit, byte quantity and predetermined threshold for that will be detected are compared, if both are consistent, control is described
Communication interface is connected with first program storage unit (PSU), if it is inconsistent, controlling the communication interface with second journey
Sequence memory cell is connected.
4. a kind of code method for burn-recording for microcontroller described in claim any one of 1-3, it is characterised in that the method bag
Include：
Send code file to microcontroller；
Byte in code file is burnt to by the first program storage unit (PSU) by program storage control unit；
Byte in code file is burnt to by the second program storage unit (PSU) by program storage control unit.
5. code method for burn-recording according to claim 4, is further characterized in that, the byte in code file is burnt into
One program storage unit (PSU)；Byte in code file is burnt into the first program storage unit (PSU) to specifically include：S1 is by code file
The byte of middle predetermined quantity is burnt to the first program storage unit (PSU), while the byte of predetermined quantity is burnt into the second program storage
Unit；S2. repeating said steps S1, in sequence burning is deposited until the code in the code file is all burnt to the first program
Storage unit and the second program storage unit (PSU).
6. code method for burn-recording according to claim 5, is further characterized in that, the byte of the predetermined quantity is 1 word
Section.
7. the code method for burn-recording according to claim any one of 4-6, is further characterized in that, by the byte in code file
It is burnt to the first program storage unit (PSU)；Byte in code file is burnt to the second program storage unit (PSU), is specifically included：Will generation
Byte in code file is burnt to the first program storage unit (PSU)；Byte in the code file is being burnt to the first program
After memory cell, then the byte in code file is burnt to the second program storage unit (PSU).
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| CN201710056600.3A CN106708592B (en) | 2017-01-25 | 2017-01-25 | Microcontroller and code burning method for microcontroller |
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| CN201710056600.3A CN106708592B (en) | 2017-01-25 | 2017-01-25 | Microcontroller and code burning method for microcontroller |
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