CN105302612A - Method for quick upgrading of software program of single-chip microcomputer in electronic system case - Google Patents
Method for quick upgrading of software program of single-chip microcomputer in electronic system case Download PDFInfo
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Abstract
The invention discloses a method for quick upgrading of a software program of a single-chip microcomputer in an electronic system case. The method is high in reliability and capable of achieving online upgrading of the single-chip microcomputer in an electronic system without case opening. According to the technical scheme, during serial asynchronous communication, upgrading software program data are stored in a sending buffer area in a packaged mode by an upper computer and sent to a lower computer in a framed mode by a serial communication module; after a lower computer receiving buffer area receives serial data frame information, a serial data receiving and processing module judges whether the serial data frame information received by the lower computer receiving buffer area are effective, real data frames are assigned to a cache array Ai through the receiving buffer area, 1 is added to a subscript variable Ni of the cache array Ai automatically, an array word string consistent with a communication frame protocol is stored in a cache array Bi, and the lower computer erases the region where programs are to be deposited in a lower computer single-chip microcomputer FLASH and then writes a software program data package into the region where programs are to be deposited in the FLASH.
Description
Technical field
The invention relates to and adopt serial asynchronous communication to carry out the method for software upgrading to the single-chip microcomputer in electronic system.
Background technology
Single-chip microcomputer is also called single chip microcontroller, is equivalent to a miniature computing machine, has that volume is little, quality light, cost performance high.Nowadays, the use field of single-chip microcomputer is very extensive, as intelligent instrument, in real time industry control, communication apparatus, navigational system, household electrical appliance etc.In above-mentioned electronic system, the computing machine microcontroller chip (single-chip microcomputer) between each parts all needs to carry out exchanges data and sets up communication contact, uses serial communication means to be wherein a kind of important, conventional communication modes.Serial communication working method is divided into the method for synchronization and asynchronous system two kinds, and in real work, asynchronous system is with the most use, comprises three conventional bus standards: RS-232, RS-422, RS-485.Single-chip microcomputer (Mircocontrollers) is a kind of integrated circuit (IC) chip, is to adopt very large scale integration technology to be integrated into one piece of silicon chip to form a little and perfect microcomputer having the central processor CPU of data-handling capacity, random access memory ram, read only memory ROM, multiple I/O mouth and the function such as interrupt system, timer/counter (some also comprises the circuit such as display driver circuit, pulse-width modulation circuit, analog multiplexer, A/D converter, SPI).
At present, the memory under program of single-chip microcomputer is generally all made up of programmable FLASH memory, relative to original SRAM memory, advantages such as there is involatile, high density, low-power consumption, read fast, can rewrite online, when can realize the change of electronic equipment demand, do not need more single-chip microcomputer on exchange device, only again need rewrite the software program in single-chip microcomputer FLASH.Along with the development of electronic system, more and more higher to the demand of its physical dimension, weight, the demands such as the miniaturization of electronic system cabinet, ease for maintenance, reliability are growing.Cabinet is less, and the circuit board in cabinet certainly will be caused more and more less, and this also causes, and the circuit board in cabinet is dismantled, maintenance, repair bring inconvenience.And generally speaking, the maintenance, repair of electronic system need to carry out rewriting to the software program in intrasystem single-chip microcomputer FLASH and upgrade, but the miniaturization of electronic system, rewriting upgrade job to the software program of single-chip microcomputer makes troubles.
Summary of the invention
The object of the invention is for single-chip microcomputer in electronic system, realize not unpacking, the method for online upgrading and device, with solve scm software program in existing electronic system cabinet need unpack rewrite upgrading weak point, there is provided a kind of directly perceived simple, design cycle is short, reliability is high, does not need to open electronic system cabinet, by the method for scm software program in the quick upgrading electronic system chassis of serial asynchronous communication interface.
In order to achieve the above object, the method of scm software program in a kind of quick upgrading electronic system chassis provided by the invention, it is characterized in that comprising the steps: to it is characterized in that comprising the steps: the host computer to upgrade for serial asynchronous communication software program with the PC of serial communication interface, the slave computer that single-chip microcomputer is upgraded as serial asynchronous communication software program in electronic system cabinet, the two carries out the serial asynchronous communication transmission of program software data by the RS-232/RS-422/RS485 interface of standard, serial data receiving processing module is provided with in host computer and slave computer, data transmission blocks forms serial asynchronous communication data distributing program software, serial asynchronous communication data distributing program software is according to workflow demand, buffer zone time-sharing send serial data frame information is sent to host computer and slave computer, slave computer and host computer is issued by serial communication module, after host computer and slave computer receive reception buffer zone serial data frame information, serial data receiving processing module judges that whether the serial data frame information that host computer and slave computer reception buffer zone receive is effective, in slave computer, microcontroller serial port data receiver processing module checks FLASH storage area software program data School Affairs and whether receive software program data School Affairs consistent, if very then unanimously return order to host computer back-checking, adopt buffer memory array Ai, Bi Double buffer storing data information, if vacation is then to the inconsistent time order of host computer back-checking, effective serial data frame passes through reception buffer zone assignment to buffer memory array Ai in single-chip microcomputer in slave computer, buffer memory array Ai subscript variable Ni is from adding 1, by the array word string consistent with communication frames agreement stored in buffer memory array Bi, again by slave computer transmission buffer and serial data sending module, return reception successful data to host computer, after slave computer upgrading reception software program data bag completes, by region to be stored for slave computer single-chip microcomputer flash memory FLASH internal program erasing, then by upgrade software routine data bag write FLASH internal program region to be stored.
The present invention has following beneficial effect compared to prior art.
Tactic pattern is intuitively simple, and design cycle is short.The present invention is using host computer software upgrade equipment PC as the host computer of serial asynchronous communication, in the next loom system chassis, single-chip microcomputer is as the slave computer of serial asynchronous communication, the two RS-232/RS-422/RS485 interface by standard and serial communication circuit connect to form serial asynchronous communication data transmission device, tactic pattern is intuitively simple, and design cycle is short.
Program is well arranged, easily comprehensively.The present invention is provided with serial data receiving processing module in host computer and slave computer, data transmission blocks forms serial asynchronous communication data distributing program software, serial asynchronous communication data distributing program software is according to workflow demand, buffer zone time-sharing send serial data frame information is sent to host computer and slave computer, slave computer and host computer is issued by serial communication module, after host computer and slave computer reception buffer zone receive serial data frame information, serial data receiving processing module judges that whether the serial data frame information that host computer and slave computer reception buffer zone receive is effective, program is well arranged, easily comprehensive.
Reliability is high, can ensure communication data transmission real-time, correctness on communication succession, data frame format.The present invention is in the transmission of serial asynchronous communication data, host computer, slave computer are according to workflow demand time-sharing send, receiving data information, adopt buffer memory array Ai, Bi Double buffer storing data information, institute's usage data time delay is the shortest, improve the accuracy in the transmission of asynchronous serial communication data and real-time, decrease the time delay of communication data transmission, guarantee the high reliability of electronic system Computer work, stability, and then improve real-time, correctness and the reliability of transmitting data between computing machine.Even if when there is misdata under communication link abnormal conditions, also can ensure that communication data transmission data Computer adopts correct data.
Accompanying drawing explanation
Figure below further illustrates the present invention in conjunction with the accompanying drawings and embodiments, but does not therefore limit the present invention among affiliated scope of embodiments.
Fig. 1 is the schematic diagram of serial asynchronous communication data transmission device of the present invention.
Fig. 2 is the theory diagram of the serial asynchronous communication transmitting and receiving data of Fig. 1.
Fig. 3 is serial asynchronous communication serial data ROMPaq flow process of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.Wherein, accompanying drawing forms the application's part, and is used from elaboration principle of the present invention in embodiments of the invention one.
Consult Fig. 1, Fig. 2.In embodiment described below, a kind of method of scm software program in quick upgrading electronic system chassis, with the host computer of upgrading for serial asynchronous communication software program with the PC of serial communication interface, the slave computer that single-chip microcomputer is upgraded as serial asynchronous communication software program in electronic system cabinet, the two carries out the serial asynchronous communication transmission of program software data by the RS-232/RS-422/RS485 interface of standard.Host computer microcontroller chip and host computer microcontroller chip are computing machine microcontroller chip, the two RS-232/RS-422/RS485 interface by standard and rs 232 serial interface signal change-over circuit connect to form serial asynchronous communication data transmission device, upper computer software updating apparatus PC is by rs 232 serial interface signal change-over circuit, and in the next organic electronic system chassis, single-chip microcomputer sends upgrade software routine data.In upper computer software updating apparatus PC and slave computer electronic system cabinet, single-chip microcomputer all has serial asynchronous communication data transmit-receive function.The serial asynchronous communication data distributing program software of serial data receiving processing module, data transmission blocks formation is provided with in host computer and slave computer, in the transmission of serial asynchronous communication data, serial asynchronous communication data distributing program software is according to workflow demand, host computer and slave computer send buffer zone time-sharing send serial data frame information, slave computer and host computer is issued by serial communication module, after host computer and slave computer receive reception buffer zone serial data frame information, serial data receiving processing module judges that whether the serial data frame information that host computer and slave computer reception buffer zone receive is effective, in slave computer, microcontroller serial port data receiver processing module checks FLASH storage area software program data School Affairs and whether receive software program data School Affairs consistent, if very then unanimously return order to host computer back-checking, adopt buffer memory array Ai, Bi Double buffer storing data information, if vacation is then to the inconsistent time order of host computer back-checking, effective serial data frame passes through reception buffer zone assignment to buffer memory array Ai in single-chip microcomputer in slave computer, buffer memory array Ai subscript variable Ni is from adding 1, by the array word string consistent with communication frames agreement stored in buffer memory array Bi, again by slave computer transmission buffer and serial data sending module, return reception successful data to host computer, after slave computer upgrading reception software program data bag completes, by region to be stored for slave computer single-chip microcomputer flash memory FLASH internal program erasing, then by upgrade software routine data bag write FLASH internal program region to be stored.In serial asynchronous communication, upgrade software routine data is packed by host computer, stored in transmission buffer zone, sends to slave computer by the framing of serial communication modular converter; After slave computer reception buffer zone receives serial data frame information, serial data receiving processing module judges that whether the serial data frame information that slave computer reception buffer zone receives is effective.
Consult Fig. 2.Host computer and slave computer connect to form serial asynchronous communication data transmission device by standard RS-232/RS-422/RS485 interface and rs 232 serial interface signal change-over circuit, and upgrade software routine data is passed to slave computer by host computer.Designer, according to electronic system workflow, formulates the communication frames agreement between host computer, slave computer, single-chip microcomputer work schedule in agreement upper computer software updating apparatus PC, slave computer electronic system cabinet.Communication frames agreement comprises baud rate, frame head, frame number, School Affairs, postamble and data block etc., after the reception buffer zone in serial data receiver module receives data, starts serial data receiving processing module program.
Consult Fig. 3.A. electronic system cabinet single-chip microcomputer online upgrading bootstrap program module initialization serial ports, baud rate and timer etc.; Then pass through
B. single-chip microcomputer sends upgrading to software upgrade equipment PC and to shake hands instruction;
C. judge whether to receive updating apparatus PC in single-chip microcomputer certain hour to return upgrading and to shake hands back order, if very, illustrate that single-chip microcomputer needs to carry out software program upgrading, then perform step D, otherwise perform step T;
D. upgrade software routine data is reached a packet by every 1024 bytes by software upgrade equipment PC, and one is divided into N number of packet, prepares to be sent to single-chip microcomputer by serial communication interface;
E. software upgrade equipment PC sends N number of software program data bag successively to single-chip microcomputer;
F. single-chip microcomputer receives packet Ai and whether meets data frame format requirement, if very, performs step H, otherwise performs step G;
G. send Frame to updating apparatus PC, ask software upgrade equipment PC retransmission data bag, proceed to step e;
H. in slave computer single-chip microcomputer by packet Ai stored in packet Bi;
I. in slave computer, single-chip microcomputer judges packet Bi, and whether single-chip microcomputer receives Ni software program data bag, performs step J, otherwise perform step M if true; Ni=1 ~ (N-1)
J. inner FLASH memory block Ni*1024 area data is wiped by single-chip microcomputer;
K. single-chip microcomputer is by Ni) software program data bag copies Ni*1024 region, inner FLASH memory block to; Ni=1 ~ (N-1)
L. single-chip microcomputer judges whether to receive N number of software program data bag, if very then perform step N, otherwise performs step M;
M. single-chip microcomputer sends the application of next frame packet to software upgrade equipment PC, proceeds to step e;
N. inner FLASH memory block N*1024 area data is wiped by single-chip microcomputer;
O. single-chip microcomputer copies N number of software program data bag to inner FLASH memory block N*1024 region;
P. single-chip microcomputer completes back order to software upgrade equipment PC transmitting and receiving data;
Q. single-chip microcomputer checks FLASH storage area software program data School Affairs and whether receive software program data School Affairs consistent, if very, then and execution step R, if false, then execution step S;
R. single-chip microcomputer sends verification consistent time order to software upgrade equipment PC;
S. single-chip microcomputer sends verification inconsistent time order to software upgrade equipment PC;
T. software program upgrading terminates.
Claims (10)
1. the method for scm software program in a quick upgrading electronic system chassis, it is characterized in that comprising the steps: to it is characterized in that comprising the steps: the host computer to upgrade for serial asynchronous communication software program with the PC of serial communication interface, the slave computer that single-chip microcomputer is upgraded as serial asynchronous communication software program in electronic system cabinet, the two carries out the serial asynchronous communication transmission of program software data by the RS-232/RS-422/RS485 interface of standard, serial data receiving processing module is provided with in host computer and slave computer, data transmission blocks forms serial asynchronous communication data distributing program software, serial asynchronous communication data distributing program software is according to workflow demand, buffer zone time-sharing send serial data frame information is sent to host computer and slave computer, slave computer and host computer is issued by serial communication module, after host computer and slave computer receive reception buffer zone serial data frame information, serial data receiving processing module judges that whether the serial data frame information that host computer and slave computer reception buffer zone receive is effective, in slave computer, microcontroller serial port data receiver processing module checks FLASH storage area software program data School Affairs and whether receive software program data School Affairs consistent, if very then unanimously return order to host computer back-checking, adopt buffer memory array Ai, Bi Double buffer storing data information, if vacation is then to the inconsistent time order of host computer back-checking, effective serial data frame passes through reception buffer zone assignment to single-chip microcomputer buffer memory array Ai in slave computer, buffer memory array Ai subscript variable Ni is from adding 1, by the array word string consistent with communication frames agreement stored in buffer memory array Bi, again by slave computer transmission buffer and serial data sending module, return reception successful data to host computer, after slave computer upgrading reception software program data bag completes, by region to be stored for slave computer single-chip microcomputer flash memory FLASH internal program erasing, then by upgrade software routine data bag write FLASH internal program region to be stored.
2. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, it is characterized in that: in serial asynchronous communication, upgrade software routine data is packed by host computer, stored in transmission buffer zone, sends to slave computer by the framing of serial communication modular converter; After slave computer reception buffer zone receives serial data frame information, serial data receiving processing module judges that whether the serial data frame information that slave computer reception buffer zone receives is effective.
3. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, is characterized in that: host computer and slave computer connect to form serial asynchronous communication data transmission device by standard RS-232/RS-422/RS485 interface and rs 232 serial interface signal change-over circuit.
4. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, it is characterized in that: designer is according to electronic system workflow, formulate the communication frames agreement between host computer, slave computer, single-chip microcomputer work schedule in agreement upper computer software updating apparatus PC, slave computer electronic system cabinet.
5. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 4, is characterized in that: communication frames agreement comprises baud rate, frame head, frame number, School Affairs, postamble and data block.
6. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, is characterized in that: after the reception buffer zone in serial data receiver module receives data, starts serial data receiving processing module program.
7. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, it is characterized in that: upgrade software routine data is reached a packet by every 1024 bytes by software upgrade equipment PC, one is divided into N number of packet, prepares to be sent to single-chip microcomputer by serial communication interface.
8. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, it is characterized in that: in slave computer, microcontroller serial port data receiver processing module judges the software program data bag Bi from host computer, whether single-chip microcomputer receives Ni software program data bag, if very, receive next software program data bag, otherwise this packet retransmitted by single-chip microcomputer request updating apparatus PC, wherein Ni=1 ~ (N-1)).
9. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, it is characterized in that: inner FLASH memory block Ni*1024 area data is wiped by single-chip microcomputer, and copies Ni software program data bag to inner FLASH memory block Ni*1024 region.
10. the method for scm software program in upgrading electronic system chassis fast as claimed in claim 1, it is characterized in that: single-chip microcomputer receives packet Ai and whether meets data frame format requirement, if very, by packet Ai stored in packet Bi, otherwise send Frame to updating apparatus PC, please software upgrade equipment PC retransmission data bag, software upgrade equipment PC sends N number of software program data bag successively to single-chip microcomputer.
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| CN107678765A (en) * | 2017-10-12 | 2018-02-09 | 北方电子研究院安徽有限公司 | A kind of online upgrading method based on C8051F series monolithics |
| CN107832072A (en) * | 2017-06-23 | 2018-03-23 | 南京悦控智能科技有限公司 | A kind of method based on the silent upgrading single-chip microcomputer firmware of serial communication |
| CN108134699A (en) * | 2017-12-22 | 2018-06-08 | 南京南瑞继保电气有限公司 | A kind of system and method for string type photovoltaic DC-to-AC converter remote download firmware |
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| CN108134699A (en) * | 2017-12-22 | 2018-06-08 | 南京南瑞继保电气有限公司 | A kind of system and method for string type photovoltaic DC-to-AC converter remote download firmware |
| CN109634581A (en) * | 2018-11-08 | 2019-04-16 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of date storage method based on STM32F103ZET6 and eMMC card |
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| CN109511203A (en) * | 2018-11-13 | 2019-03-22 | 广州鹏林照明灯具有限公司 | A kind of system and method for stage lamp Double buffer calibration DMX512 data |
| CN111008010A (en) * | 2019-11-14 | 2020-04-14 | 天津航空机电有限公司 | RS485 bus-based singlechip application software online programming method and device |
| CN111814139A (en) * | 2020-07-02 | 2020-10-23 | 深圳市法拉第电驱动有限公司 | Automobile motor controller program safe loading system and method |
| CN112035882A (en) * | 2020-07-17 | 2020-12-04 | 成都飞机工业（集团）有限责任公司 | Method for ensuring data integrity in communication between upper computer and lower computer |
| CN111913727A (en) * | 2020-08-14 | 2020-11-10 | 电子科技大学中山学院 | Method for realizing AISG-V3 protocol firmware storage by adopting Flash inside STM32 single chip microcomputer |
| CN111913727B (en) * | 2020-08-14 | 2023-06-30 | 电子科技大学中山学院 | Method for storing AISG-V3 protocol firmware by adopting internal Flash of STM32 single-chip microcomputer |
| CN113625630A (en) * | 2021-08-09 | 2021-11-09 | 大易智慧信息科技(苏州)有限公司 | Device for remotely controlling operation of single chip microcomputer by upper computer |
| CN113625630B (en) * | 2021-08-09 | 2024-05-14 | 大易智慧信息科技(苏州)有限公司 | Device for remote control of single-chip microcomputer operation by upper computer |
| CN113961212A (en) * | 2021-10-29 | 2022-01-21 | 重庆长安汽车股份有限公司 | OTA installation package deployment method and system based on Ethernet and method for upgrading vehicle controller |
| CN113961212B (en) * | 2021-10-29 | 2024-05-10 | 重庆长安汽车股份有限公司 | OTA installation package deployment method and system based on Ethernet and method for upgrading vehicle controller |
| CN114509966A (en) * | 2021-12-30 | 2022-05-17 | 北京无线电测量研究所 | Asynchronous high-speed serial port real-time continuous data acquisition system |
| CN114509966B (en) * | 2021-12-30 | 2023-11-03 | 北京无线电测量研究所 | Asynchronous high-speed serial port real-time continuous data acquisition system |
| CN115484125A (en) * | 2022-08-26 | 2022-12-16 | 中国长城科技集团股份有限公司 | Serial communication method, device, computer equipment and readable storage medium |
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