CN105302612B - The method of scm software program in quick upgrading electronic system chassis - Google Patents
The method of scm software program in quick upgrading electronic system chassis Download PDFInfo
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- CN105302612B CN105302612B CN201510794532.1A CN201510794532A CN105302612B CN 105302612 B CN105302612 B CN 105302612B CN 201510794532 A CN201510794532 A CN 201510794532A CN 105302612 B CN105302612 B CN 105302612B
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Abstract
The method of scm software program in a kind of quick upgrading electronic system chassis disclosed by the invention, it is desirable to provide a kind of reliability is high, can in electronic system chip microcontroller do not unpack, the method for online upgrading.The technical scheme is that：In serial asynchronous communication, host computer is packaged into transmission buffering area by software program data is upgraded, and slave computer is sent to by serial communication module framing；After slave computer reception buffering area receives serial data frame information, serial data receiving processing module judges whether slave computer receives buffering area serial data frame information effective, to be that genuine data frame is assigned to caching array Ai by receiving buffering area, cache array Ai subscript variables Ni and add 1 certainly, the array word string deposit caching array Bi consistent with communication Frame Protocol, slave computer wipes slave computer microcontroller FLASH internal programs region to be stored, then by software program data bag write-in FLASH internal programs region to be stored.
Description
Technical field
The present invention is the method on carrying out software upgrading using serial asynchronous communication to the microcontroller in electronic system.
Background technology
Microcontroller is also known as single chip microcontroller, the computer miniature equivalent to one, has small, light weight, property
Valency than it is high the features such as.Nowadays, microcontroller is quite varied using field, such as intelligence instrument, real-time industry control, communication apparatus, leads
Boat system, household electrical appliance etc..In above-mentioned electronic system, the computer microcontroller chip between each component（Microcontroller）Be required for into
Row data exchange establishes communication contact, the use of serial communication means is that one of which is important, common communication modes.Serial communication
Working method is divided into two kinds of the method for synchronization and asynchronous system, and in real work, asynchronous system is with the most use, including three common
Bus standard：RS-232、RS-422、RS-485.Microcontroller（Mircocontrollers）It is a kind of IC chip, is
Using very large scale integration technology the central processor CPU with data-handling capacity, random access memory ram, read-only
Memory ROM, a variety of I/O mouthfuls and interrupt system, the function such as timer/counter（It is some to further include display driver circuit, pulsewidth
The circuits such as modulation circuit, analog multiplexer, A/D converter, SPI）It is one small and perfect to be integrated into composition on one piece of silicon chip
Microcomputer.
At present, the memory under program of microcontroller is generally all made of programmable FLASH memories, relative to original
SRAM memory, has the advantages that fixedness, high density, low-power consumption, quick read, is online rewritable, it can be achieved that electronics is set
During standby demand change, microcontroller in equipment is not needed to change, need to only rewrite the software program in microcontroller FLASH again.With
The development of electronic system, it is higher and higher to its appearance and size, the demand of weight, the miniaturization of electronic system cabinet, ease for maintenance,
The demands such as reliability are growing.Cabinet is smaller, and the circuit board being bound to cause in cabinet is less and less, this is also resulted in cabinet
Circuit board dismounting, maintenance, repair bring inconvenience.And in general, the maintenance, repair of electronic system are needed to the monolithic in system
Software program in machine FLASH carries out rewriting upgrading, but the miniaturization of electronic system, and the software program to microcontroller is rewritten
Upgrade job is made troubles.
The content of the invention
The purpose of the present invention is for microcontroller in electronic system, realize do not unpack, the method and device of online upgrading, with
Solve scm software program in existing electronic system cabinet and need to unpack to rewrite the shortcoming of upgrading, there is provided a kind of letter directly perceived
Single, design cycle is short, and reliability is high, is not required to open electronic system cabinet, passes through the quick upgrading electronic of serial asynchronous communication interface
The method of scm software program in system chassis.
In order to achieve the above object, scm software program in a kind of quick upgrading electronic system chassis provided by the invention
Method, it is characterised in that include the following steps：Using the PC machine with serial communication interface as serial asynchronous communication software program
The host computer of upgrading, using the slave computer that microcontroller upgrades as serial asynchronous communication software program in electronic system cabinet, the two
The serial asynchronous communication that program software data are carried out by the RS-232/RS-422/RS485 interfaces of standard transmits；Host computer and
It is soft that serial data receiving processing module, data transmission blocks composition serial asynchronous communication data distributing program are equipped with slave computer
Part, serial asynchronous communication data distributing program software are sent out according to workflow demand to host computer and the timesharing of slave computer buffering area
Serial data frame information is sent, slave computer and host computer are issued by serial communication module, it is slow that host computer and slave computer receive reception
After rushing area's serial data frame information, serial data receiving processing module judges that host computer and slave computer receive what buffering area received
Whether serial data frame information is effective, and microcontroller serial port data receiver processing module checks that FLASH storage regions are soft in slave computer
Part routine data verify and with receive software program data verification and whether unanimously, if if true, consistent to host computer back-checking
Hui Ling, using caching array Ai, Bi Double buffer storage data message, if if false, to the order of inconsistent time of host computer back-checking；
Effective serial data frame is assigned in slave computer caching array Ai in microcontroller by receiving buffering area, and caching array Ai subscripts become
Measure Ni from plus 1, by the array word string deposit caching array Bi consistent with communication Frame Protocol, then by slave computer transmission buffer and
Serial data sending module, returns to host computer and receives successful data；After the completion of slave computer upgrading receives software program data bag,
, then will upgrading software program data bag write-in FLASH by the region erasing to be stored of slave computer microcontroller flash memory FLASH internal programs
Internal program region to be stored.
The present invention has the advantages that compared with the prior art.
Tactic pattern is intuitively simple, and design cycle is short.The present invention using host computer software upgrade equipment PC machine as serially it is different
The host computer of communication is walked, using microcontroller in the next loom system chassis as the slave computer of serial asynchronous communication, the two passes through mark
Accurate RS-232/RS-422/RS485 interfaces connect composition serial asynchronous communication data transmission device, knot with serial communication circuit
Structure pattern intuition is simple, and design cycle is short.
Program is well arranged, easily comprehensive.The present invention in host computer and slave computer be equipped with serial data receiving processing module,
Data transmission blocks form serial asynchronous communication data distributing program software, serial asynchronous communication data distributing program software according to
Workflow demand, sends buffering area timesharing to host computer and slave computer and sends serial data frame information, pass through serial communication mould
Block issues slave computer and host computer, after host computer and slave computer reception buffering area receive serial data frame information, serial data
Receiving processing module judges whether the serial data frame information that host computer and slave computer reception buffering area receive is effective, program layer
It is secondary clearly demarcated, it is easily comprehensive.
Reliability is high, can ensure communication data transmission real-time, correctness on communication succession, data frame format.This
In serial asynchronous communication data transfer, host computer, slave computer send according to the timesharing of workflow demand, receive data letter for invention
Breath, using caching array Ai, Bi Double buffer storage data message, uses data delay most short, improves asynchronous serial communication
Accuracy and real-time in data transfer, reduce the delay of communication data transmission, it is ensured that electronic system Computer works
High reliability, stability, and then improve real-time, correctness and the reliability that data are transmitted between computer.Even in
When there is wrong data under communication link abnormal conditions, it also can guarantee that communication data transmission data Computer uses positive exact figures
According to.
Brief description of the drawings
Figure below further illustrates the present invention in conjunction with the accompanying drawings and embodiments, but does not therefore limit the present invention to affiliated reality
Apply among a scope.
Fig. 1 is the schematic diagram of serial asynchronous communication data transmission device of the present invention.
Fig. 2 is the functional block diagram of the serial asynchronous communication transmitting and receiving data of Fig. 1.
Fig. 3 is the serial asynchronous communication serial data upgrade procedure flow of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.Wherein, attached drawing forms the application part, and
It is used to illustrate the principle of the present invention together in the embodiment of the present invention.
Refering to Fig. 1, Fig. 2.In embodiment described below, scm software in a kind of quick upgrading electronic system chassis
The method of program, the host computer upgraded using the PC machine with serial communication interface as serial asynchronous communication software program, with electronics
The slave computer that microcontroller upgrades as serial asynchronous communication software program in system chassis, the two passes through the RS-232/RS- of standard
422/RS485 interfaces carry out the serial asynchronous communication transmission of program software data.Host computer microcontroller chip and host computer micro-control
Coremaking piece is computer microcontroller chip, the two is changed by the RS-232/RS-422/RS485 interface and rs 232 serial interface signal of standard
Circuit connection composition serial asynchronous communication data transmission device, upper computer software updating apparatus PC machine change electricity by rs 232 serial interface signal
Road, into the next electromechanical subsystem cabinet, microcontroller sends upgrading software program data.Upper computer software updating apparatus PC machine and
Microcontroller is respectively provided with serial asynchronous communication data transmit-receive function in slave computer electronic system cabinet.Set in host computer and slave computer
There is the serial asynchronous communication data distributing program software that serial data receiving processing module, data transmission blocks are formed；Serial
In asynchronous communication data transfer, serial asynchronous communication data distributing program software is according to workflow demand, host computer and bottom
Machine sends buffering area timesharing and sends serial data frame information, and slave computer and host computer, host computer are issued by serial communication module
Received with slave computer after receiving buffering area serial data frame information, serial data receiving processing module judges host computer and slave computer
Whether effective receive the serial data frame information that buffering area receives, microcontroller serial port data receiver processing module is examined in slave computer
Look into FLASH storage regions software program data verification and with receive software program data verification and whether unanimously, if if true, to
Host computer back-checking unanimously returns order, using caching array Ai, Bi Double buffer storage data message, if if false, being returned to host computer
Return inconsistent time order of verification；Effective serial data frame is assigned in slave computer by receiving buffering area and array is cached in microcontroller
Ai, caching array Ai subscript variables Ni by the array word string deposit caching array Bi consistent with communication Frame Protocol, then lead to from adding 1
Slave computer transmission buffer and serial data sending module are crossed, is returned to host computer and receives successful data；Slave computer upgrading receives
After the completion of software program data bag, slave computer microcontroller flash memory FLASH internal programs region to be stored is wiped, then will be upgraded soft
Part routine data bag write-in FLASH internal programs region to be stored.In serial asynchronous communication, host computer will upgrade software program number
According to packing, deposit sends buffering area, slave computer is sent to by serial communication modular converter framing；Slave computer receives buffering area and connects
After receiving serial data frame information, serial data receiving processing module judges that slave computer receives the serial data that buffering area receives
Whether frame information is effective.
Refering to Fig. 2.Host computer and slave computer change electricity by standard RS-232/RS-422/RS485 interfaces and rs 232 serial interface signal
Road connection composition serial asynchronous communication data transmission device, host computer are transmitted to slave computer by software program data is upgraded.Designer
Member formulates the communication Frame Protocol between host computer, slave computer, agreement upper computer software upgrading is set according to electronic system workflow
Microcontroller work schedule in standby PC machine, slave computer electronic system cabinet.Communication frames agreement includes baud rate, frame head, frame number, verification
With, postamble and data block etc., after the reception buffering area in serial data receiving module receives data, start serial data and receive
Processing module program.
Refering to Fig. 3.A. electronic system cabinet microcontroller online upgrading bootstrap program module initialization serial ports, baud rate and fixed
When device etc.；Then pass through
B. microcontroller sends upgrading to software upgrade equipment PC machine and shakes hands instruction；
C. judge whether to receive updating apparatus PC machine in microcontroller certain time and return to upgrading and shake hands back order, illustrate if very
Microcontroller needs to carry out software program upgrading, then performs step D, otherwise performs step T；
D. software upgrade equipment PC machine reaches a data packet by software program data is upgraded by every 1024 byte, and one is divided into
For N number of data packet, it is ready to pass through serial communication interface and sends to microcontroller；
E. software upgrade equipment PC machine sends N number of software program data bag to microcontroller successively；
F. microcontroller receives whether data packet Ai meets data frame format requirement, and step H is performed if very, otherwise performs step
Rapid G；
G. data frame is sent to updating apparatus PC machine, asks software upgrade equipment PC machine retransmission data bag, be transferred to step E；
H. data packet Ai is stored in data packet Bi by microcontroller in slave computer；
I. microcontroller judges data packet Bi in slave computer, and whether microcontroller receives the Ni software program data bag, if
It is true to perform step J, otherwise perform step M；Ni=1~(N-1)
J. microcontroller wipes internal FLASH memory blocks Ni*1024 area datas；
K. microcontroller is by Ni) software program data bag copies internal FLASH memory blocks Ni*1024 regions to；Ni=1
~(N-1)
L. microcontroller judges whether to receive n-th software program data bag, if if true, execution step N, otherwise performs step
Rapid M；
M. microcontroller sends next frame data packet application to software upgrade equipment PC machine, is transferred to step E；
N. microcontroller wipes internal FLASH memory blocks N*1024 area datas；
O. microcontroller copies n-th software program data bag to internal FLASH memory blocks N*1024 regions；
P. microcontroller completes back order to software upgrade equipment PC machine transmitting and receiving data；
Q. monolithic machine check FLASH storage regions software program data verifies and with receiving software program data verification and being
It is no consistent, if true, then step R is performed, if vacation, then performs step S；
R. microcontroller sends consistent return of verification to software upgrade equipment PC machine and makes；
S. microcontroller sends inconsistent time order of verification to software upgrade equipment PC machine；
T. software program upgrading terminates.
Claims (10)
1. a kind of method of scm software program in quick upgrading electronic system chassis, it is characterised in that include the following steps：
The host computer upgraded using the PC machine with serial communication interface as serial asynchronous communication software program, with single in electronic system cabinet
The slave computer that piece machine upgrades as serial asynchronous communication software program, the two is connect by the RS-232/RS-422/RS485 of standard
Mouth carries out the serial asynchronous communication transmission of program software data；Serial data is equipped with host computer and slave computer and receives processing mould
Block, data transmission blocks form serial asynchronous communication data distributing program software, serial asynchronous communication data distributing program software
According to workflow demand, serial data frame information is sent to host computer and the timesharing of slave computer buffering area, passes through serial communication mould
Block issues slave computer and host computer, and after host computer and slave computer receive reception buffering area serial data frame information, serial data connects
Whether effective the serial data frame information that processing module judges that host computer and slave computer reception buffering area receive is received, in slave computer
Microcontroller serial port data receiver processing module checks the verification of FLASH storage regions software program data and with receiving software program number
According to verification and whether consistent, if if true, unanimously return order to host computer back-checking, stored using array Ai, Bi Double buffer is cached
Data message, if if false, to the order of inconsistent time of host computer back-checking；Effective serial data frame is by receiving buffering area assignment
Array Ai is cached to microcontroller in slave computer, caching array Ai subscript variables Ni is from adding 1, by the array consistent with communication Frame Protocol
Word string deposit caching array Bi, then by slave computer transmission buffer and serial data sending module, return and receive to host computer
Successful data；After the completion of slave computer upgrading receives software program data bag, slave computer microcontroller flash memory FLASH internal programs are waited to deposit
Region erasing is put, then will upgrading software program data bag write-in FLASH internal programs region to be stored.
2. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
In serial asynchronous communication, host computer will upgrade software program data packing, and deposit sends buffering area, changed by serial communication
Module framing is sent to slave computer；After slave computer reception buffering area receives serial data frame information, serial data reception processing
Module judges whether slave computer receives the serial data frame information that buffering area receives effective.
3. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
It is serial different that host computer connects composition with slave computer by standard RS-232/RS-422/RS485 interfaces with rs 232 serial interface signal conversion circuit
Walk communication data transmitting device.
4. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
Designer formulates the communication Frame Protocol between host computer, slave computer, arranges upper computer software according to electronic system workflow
Microcontroller work schedule in updating apparatus PC machine, slave computer electronic system cabinet.
5. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 4, it is characterised in that：
Communication frames agreement includes baud rate, frame head, frame number, verification and, postamble and data block.
6. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
After reception buffering area in serial data receiving module receives data, start serial data receiving processing module program.
7. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
Software upgrade equipment PC machine reaches a data packet by software program data is upgraded by every 1024 byte, and one is divided into N number of data
Bag, is ready to pass through serial communication interface and sends to microcontroller.
8. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
Microcontroller serial port data receiver processing module judges the software program data bag Bi from host computer in slave computer, and whether microcontroller
The Ni software program data bag is received, next software program data bag is received if very, otherwise microcontroller request upgrading is set
Standby PC machine retransmits the data packet, wherein Ni=1~(N-1).
9. the method for scm software program in quick upgrading electronic system chassis as claimed in claim 1, it is characterised in that：
Microcontroller wipes internal FLASH memory blocks Ni*1024 area datas, and copies the Ni software program data bag to inside
FLASH memory blocks Ni*1024 regions.
10. the method for scm software program, its feature exist in quick upgrading electronic system chassis as claimed in claim 1
In：Microcontroller receives whether data packet Ai meets data frame format requirement, data packet Ai is stored in data packet Bi if very, otherwise
Data frame is sent to updating apparatus PC machine, asks software upgrade equipment PC machine retransmission data bag, software upgrade equipment PC machine is to monolithic
Machine sends N number of software program data bag successively.
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| CN201510794532.1A CN105302612B (en) | 2015-11-18 | 2015-11-18 | The method of scm software program in quick upgrading electronic system chassis |
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| CN201510794532.1A CN105302612B (en) | 2015-11-18 | 2015-11-18 | The method of scm software program in quick upgrading electronic system chassis |
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| CN105302612B true CN105302612B (en) | 2018-05-08 |
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| 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 |
| 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 |
| 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 |
| 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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