CN104090794A - ATmega single-chip microcomputer program network remote upgrading method and system thereof - Google Patents
ATmega single-chip microcomputer program network remote upgrading method and system thereof Download PDFInfo
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- CN104090794A CN104090794A CN201410320164.2A CN201410320164A CN104090794A CN 104090794 A CN104090794 A CN 104090794A CN 201410320164 A CN201410320164 A CN 201410320164A CN 104090794 A CN104090794 A CN 104090794A
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Abstract
The invention discloses an ATmega single-chip microcomputer program network remote upgrading method and a system thereof. The system comprises a starting module, three judging modules and three corresponding executing modules. The starting module is used for starting an ATmega single-chip microcomputer, the judging modules are used for judging received PC end commands, and the different PC end commands are executed through the corresponding executing modules. According to the ATmega single-chip microcomputer program network remote upgrading method and the system thereof, the functions of software coding, upgrading, data verifying and the like are achieved through network interfaces of the system according to the received PC end commands, and the coding mode is easier, more convenient to implement and more reliable compared with a traditional coding mode.
Description
Technical field
The inventive method relates to computer information processing and ATmega single-chip microcomputer is write a yard technology, particularly a kind of machine code files through network communication interface by HEX form is transferred to ATmega single-chip microcomputer (hereinafter to be referred as single-chip microcomputer), and applies IAP technology and machine code program is write to the method for Flash in monolithic Bigpian.
Background technology
ATmega is the high-grade single-chip microcomputer of a new A VR that atmel corp releases, and possesses more interface function, and comparatively thorough and perfect aspect power saving performance, stability, anti-interference and dirigibility, and this single-chip microcomputer is widely used in various electronic products.For the download of program, traditional method is first passing through specific download line, to connect ATmega single-chip microcomputer, is writing under the control of yard software, completes the interior FlashROM of sheet that HEX machine code program is written to single-chip microcomputer.The defect of classic method or deficiency: owing to writing code at every turn, first judge machine power, and use specific download line to connect PC and single-chip microcomputer, carry out down operation, after download completes, remove downloading wire, single-chip microcomputer is again started shooting and could normally be moved newly downloaded program, this method inefficiency, method of operating is complicated, needs special-purpose download tool, can not realize the shortcomings such as remote download.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of ATmega Single Chip Microcomputer (SCM) program network remote upgrade method, and the method is based on ENC28J60 network communication interface, and Adoption Network transmission realizes the software of ATmega single-chip microcomputer under IAP mode and writes code or upgrading.
The present invention solves the problems of the technologies described above with following technical scheme:
An ATmega Single Chip Microcomputer (SCM) program network remote upgrade method, it comprises the steps:
A, power on or reset: the power on start or reset of ATmega single-chip microcomputer, enters following step B;
B, single-chip microcomputer initialization: single-chip microcomputer enters IAP mode of operation, read the network communication parameters on EEPROM, and configure ENC28J60, completes network interface initialization, enters following step C.
C, circular wait PC sort command: circular wait receives PC sort command, if receive PC sort command, according to the order of receiving, proceeds to respectively step D or step H; If do not receive PC order, auto-returned step C after 5s.
If the PC sort command that D receives, for " starting to download ", enters step e; If the PC sort command of receiving is not " starting to download ", enter step H.
E, reception HEX machine code data: the HEX machine code data that single-chip microcomputer inquire-receive PC transmits by network interface, enter step F;
F, machine code data are written to FlashROM: the HEX file data receiving is written to user program FlashROM in the sheet of ATmega, enters step G;
Whether G, judgement are write code and are completed, if write code, do not complete, and return to step e, if write code, complete, and exit IAP pattern, return to step C, again wait for PC sort command.
Whether H, the PC sort command that receives of judgement " execution user program ", if receive " execution user program " order, enters step I; Do not receive " execution user program " order, return to step C.
I, execution user software: normally carry out user software, enter step J;
J, judge whether network interface receives " software reset " order, if receive reset command, enters step K, otherwise, return to step I, continue to carry out user program.
In above-mentioned steps D, if what receive is not " start download " order, can increase following step:
Whether the PC sort command that L, judgement receive is " verification ", is, enters step M, and no, and words enter step H;
M. check FlashROM data: order reads FlashROM data, with the comparison of PC end HEX file, enter step N;
N, judge whether FlashROM data and PC end HEX file exists inconsistent content, if there is inconsistent content, enters step O, if there is no inconsistent content, directly returns to step C.
O, put check errors sign: check error flag is set, returns to step C.
Above-mentioned steps A, step B and step C, operate by starting module execution user.
In above-mentioned steps D, by judge module one, differentiate whether the PC sort command receiving is " starting to download " order.
In above-mentioned steps L, by judge module three, differentiate whether the PC sort command receiving is " verification " order.
In above-mentioned steps H, by judge module two, differentiate whether the PC sort command receiving is " execution user program " order.
Above-mentioned steps E, step F and step G, carry out respective operations by execution module one.
Above-mentioned steps I, step J and step K, carry out respective operations by execution module two.
Above-mentioned steps M, step N and step O, carry out respective operations by execution module three.
An ATmega Single Chip Microcomputer (SCM) program network remote upgrade-system, it comprises:
Start module, for the startup of ATmega single-chip microcomputer, comprise powering on or resetting of ATmega single-chip microcomputer, carry out initialization, and enter circular wait and accept PC sort command state;
Judge module one, for differentiating whether the PC sort command receiving is " starting to download " order;
Execution module one, for carrying out when the PC sort command receiving is " starting to download ", respective operations.Described respective operations comprises carrying out accepts HEX machine code data, and data are write to FlashROM;
Whether judge module two, while not being " starting to download ", is " execution user program " order for differentiating the PC sort command receiving;
Execution module two, while ordering for " execution user program " for the PC sort command when receiving, carries out respective operations.Described respective operations comprises execution user program, until receive software reset's order.
Whether judge module three, while not being " starting to download ", is " verification " order for differentiating the PC sort command receiving.
Execution module three, while ordering for " verification " for the PC sort command when receiving, carries out respective operations.Described respective operations comprises that order reads FlashROM data, with the comparison of PC end HEX file, if inconsistent by check errors flag set.
The present invention has following effect:
This inventive method is based on ENC28J60 network communication interface, and the software that Adoption Network transmits under the IAP mode that realizes ATmega single-chip microcomputer is write code or upgrading.Contrast traditional ATmega single-chip microcomputer software-downloading method, Adoption Network communication interface realizes HEX machine code file and downloads, reading and writing data processing speed is fast, do not need specific download instrument, can realize remote upgrade, after writing code and completing, this interface can be used as again the normal communication interface of user program simultaneously and uses, convenient and swift.
Accompanying drawing explanation
Fig. 1 is a kind of ATmega Single Chip Microcomputer (SCM) program of the present invention network remote upgrade-system schematic diagram.
Fig. 2 is the process flow diagram of ATmega Single Chip Microcomputer (SCM) program network remote upgrade method of the present invention.
In figure:
100---start module judge module;
101---judge module one
102---judge module two
103---judge module three
201---execution module one
202---execution module two
203---execution module three
Embodiment
Below in conjunction with drawings and Examples, the present invention is further detailed explanation; embodiments of the invention and explanation thereof are only for explaining the present invention; not as a limitation of the invention; within the spirit and principles in the present invention all; any modification of making, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Fig. 1 is a kind of ATmega Single Chip Microcomputer (SCM) program of the present invention network remote upgrade-system schematic diagram.As shown in Figure 1, this ATmega Single Chip Microcomputer (SCM) program network remote upgrade-system mainly comprises startup module 100, judge module 1, judge module 2 102, judge module 3 103 and execution module 1, execution module 2 202, execution module 3 203.
Start module 100, for the startup of ATmega single-chip microcomputer, comprise powering on or resetting of ATmega single-chip microcomputer, carry out initialization, and enter circular wait and accept PC sort command state;
Judge module 1, for differentiating whether the PC sort command receiving is " starting to download " order;
Execution module 1, for carrying out when the PC sort command receiving is " starting to download ", respective operations.Described respective operations comprises carrying out accepts HEX machine code data, and data are write to FlashROM;
Whether judge module 2 102, while not being " starting to download ", is " execution user program " order for differentiating the PC sort command receiving;
Execution module 2 202, while ordering for " execution user program " for the PC sort command when receiving, carries out respective operations.Described respective operations comprises execution user program, until receive software reset's order.
Whether judge module 3 103, while not being " starting to download ", is " verification " order for differentiating the PC sort command receiving.
Execution module 3 203, while ordering for " verification " for the PC sort command when receiving, carries out respective operations.Described respective operations comprises that order reads FlashROM data, with the comparison of PC end HEX file, if inconsistent by check errors flag set.
Wherein, by starting module 100, judge module 1, judge module 2 102 and execution module 1, execution module 2 202, formed basic configuration of the present invention.Judge module 3 103 and execution module 3 203 can arrange according to demand.
Fig. 2 is the method flow diagram of the embodiment of the present invention.
System of the present invention realizes ATmega Single Chip Microcomputer (SCM) program network remote by following operation steps and upgrades:
Step 301:ATmega single-chip microcomputer powers on or resets;
Step 302:ATmega single-chip microcomputer enters IAP mode of operation, reads the network communication parameters on EEPROM, and configures ENC28J60, completes network interface initialization;
Step 303:ATmega single-chip microcomputer circular wait PC sort command;
Step 304: if the PC sort command receiving is for " starting to download ", enter step 305; If the PC sort command receiving is not " starting to download ", enter step 308;
Step 305: the HEX machine code data that single-chip microcomputer inquire-receive PC transmits by network interface, enter step 306;
Step 306: the HEX file data receiving is written to user program FlashROM in the sheet of ATmega, enters step 307;
Step 307: whether judgement is write code and completed, and completes and returns to step 303, does not complete and returns to step 305;
Step 308: whether the PC sort command that judgement receives is " verification ", and the words that are enter step 309, no, and words enter step 312;
Step 309: check FlashROM data, enter step 310;
Step 310: by the FlashROM data that read and the comparison of PC end HEX file, if check is correct, return to step 303, if incorrect words enter step 311;
Step 311: check error flag is set, and returns to step 303.
Step 312: whether the PC sort command that judgement receives is " execution user program ", and the words that are enter step 313, otherwise return to step 303;
Step 313: normally carry out user software, enter step 314;
Step 314: judge whether network interface receives " software reset " order, and the words that are enter step 315, do not receive this order, return to step 313;
Step 315: software reset.
The above, be only a kind of specific embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. an ATmega Single Chip Microcomputer (SCM) program network remote upgrade method, is characterized in that, it comprises the steps:
A, power on or reset: by starting module, by the power on start or reset of ATmega single-chip microcomputer, entering following step B;
B, single-chip microcomputer initialization: single-chip microcomputer enters IAP mode of operation, read the network communication parameters on EEPROM, and configure ENC28J60, completes network interface initialization, enters following step C;
C, circular wait PC sort command: circular wait receives PC sort command, if receive PC sort command, according to the order of receiving, proceeds to respectively step D or step H; If do not receive PC order, auto-returned step C after 5s;
If the PC sort command that D receives, for " starting to download ", enters step e; If the PC sort command of receiving is not " starting to download ", enter step H;
E, reception HEX machine code data: the HEX machine code data that single-chip microcomputer inquire-receive PC transmits by network interface, enter step F;
F, machine code data are written to FlashROM: the HEX file data receiving is written to user program FlashROM in the sheet of ATmega, enters step G;
Whether G, judgement are write code and are completed, if write code, do not complete, and return to step e, if write code, complete, and exit IAP pattern, return to step C, again wait for PC sort command;
Whether H, the PC sort command that receives of judgement " execution user program ", if receive " execution user program " order, enters step I; Do not receive " execution user program " order, return to step C;
I, execution user software: normally carry out user software, enter step J;
J, judge whether network interface receives " software reset " order, if receive reset command, enters step K, otherwise, return to step I, continue to carry out user program.
2. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, in described step D, if what receive is not " starting to download " order, can increase following step:
Whether the PC sort command that L, judgement receive is " verification ", is, enters step M, and no, and words enter step H;
M. check FlashROM data: order reads FlashROM data, with the comparison of PC end HEX file, enter step N;
N, judge whether FlashROM data and PC end HEX file exists inconsistent content, if there is inconsistent content, enters step O, if there is no inconsistent content, directly returns to step C;
O, put check errors sign: check error flag is set, returns to step C.
3. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, described steps A, step B and step C carry out user and operate by starting module.
4. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, in described step D, by judge module one, differentiates whether the PC sort command receiving is " starting to download " order.
5. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, in described step L, by judge module three, differentiates whether the PC sort command receiving is " verification " order.
6. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, in described step H, by judge module two, differentiates whether the PC sort command receiving is " execution user program " order.
7. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, described step e, step F and step G carry out respective operations by execution module one.
8. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, described step I, step J and step K are carried out respective operations by execution module two.
9. ATmega Single Chip Microcomputer (SCM) program network remote upgrade method according to claim 1, is characterized in that, described step M, step N and step O carry out respective operations by execution module three.
10. an ATmega Single Chip Microcomputer (SCM) program network remote upgrade-system, is characterized in that, described this system comprises:
Start module, for the startup of ATmega single-chip microcomputer, comprise powering on or resetting of ATmega single-chip microcomputer, carry out initialization, and enter circular wait and accept PC sort command state;
Judge module one, for differentiating whether the PC sort command receiving is " starting to download " order;
Execution module one, for carrying out when the PC sort command receiving is " starting to download ", respective operations, described respective operations comprises carrying out accepts HEX machine code data, and data are write to FlashROM;
Whether judge module two, while not being " starting to download ", is " execution user program " order for differentiating the PC sort command receiving;
Execution module two, while ordering for " execution user program " for the PC sort command when receiving, carries out respective operations, and described respective operations comprises execution user program, until receive software reset's order;
Whether judge module three, while not being " starting to download ", is " verification " order for differentiating the PC sort command receiving;
Execution module three, while ordering for " verification " for the PC sort command when receiving, carries out respective operations, and described respective operations comprises that order reads FlashROM data, with the comparison of PC end HEX file, if inconsistent by check errors flag set.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107301067A (en) * | 2017-05-26 | 2017-10-27 | 安徽四创电子股份有限公司 | Beidou subscriber machine remote update system and its upgrade method based on IAP technologies |
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| CN202135171U (en) * | 2011-07-14 | 2012-02-01 | 邱丽芳 | Embedded remote intelligent upgrading device |
| CN102855151A (en) * | 2012-08-21 | 2013-01-02 | 武汉电信器件有限公司 | Optical module firmware in-application upgrading method capable of not interrupting service |
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Cited By (2)
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| CN107301067A (en) * | 2017-05-26 | 2017-10-27 | 安徽四创电子股份有限公司 | Beidou subscriber machine remote update system and its upgrade method based on IAP technologies |
| CN107301067B (en) * | 2017-05-26 | 2019-01-29 | 安徽四创电子股份有限公司 | Beidou subscriber machine remote update system and its upgrade method based on IAP technology |
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