CN111736882B - Remote upgrading method of DSP program - Google Patents
Remote upgrading method of DSP program Download PDFInfo
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- CN111736882B CN111736882B CN202010555272.3A CN202010555272A CN111736882B CN 111736882 B CN111736882 B CN 111736882B CN 202010555272 A CN202010555272 A CN 202010555272A CN 111736882 B CN111736882 B CN 111736882B
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
- G06F11/3688—Test management for test execution, e.g. scheduling of test suites
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses a remote upgrading method of a DSP program, which comprises the following steps: the remote PC end sends an upgrade protocol instruction which comprises a code matching instruction, a file data transmission instruction, a backup instruction and a recovery instruction; the DSP is electrified to execute a bootstrap program and waits for receiving the code matching instruction; and if the DSP receives the code matching instruction within the preset time, jumping to the programming program to upgrade and back up the programming program, or jumping to the programming program to upgrade and back up the user program. The invention effectively improves the reliability of DSP remote upgrade, not only improves the reliability of user program programming guide execution, but also improves the reliability of guide programming program upgrade and execution.
Description
Technical Field
The invention belongs to the field of embedded equipment, and particularly relates to a remote upgrading method of a DSP program.
Background
A DSP (digital signal processor ) is a digital signal processing device that has wide application in the fields of industrial control, image processing, communication, navigation, etc.
Usually, in a device containing a DSP chip, a program is already written in Flash through JTAG when leaving the factory, and is packaged in a casing along with a board. However, the program is often required to be changed and upgraded before the product is mature, if JTAG programming is used, a JTAG interface is not arranged outside the case generally, the case is required to be opened for processing, the case has the risk of introducing redundancy, and when the number of products is relatively large, the workload of maintenance personnel is large, and the maintainability is poor.
The above problems can be solved by remote upgrade through communication interfaces such as serial ports. TI provides a third party tool C2Prog software which can carry out serial port upgrade on part of DSP chips, and has the defects that the chips are required to be set into an SCI starting mode, the optional frequency of a crystal oscillator is limited, the application is limited, and Flash starting is used in most occasions in actual use. In addition, an upgrade module is added in the user code, the upgrade programming code and the user application code are compiled in a mixed mode, after the upgrade process is entered, the programming and communication part code is moved to the RAM for execution, the Bin file data of the executable file is received through the communication interface and stored in the Flash, and the serial port remote upgrade can be realized.
In addition, there is a commonly adopted remote upgrading method for running the boot programming program and the user program independently of each other, the method adopts a method of waiting for an upgrading instruction after power-on delay, the user program is jumped to when waiting for overtime, and the boot programming program or the user program is upgraded by running a programming upgrading branch when receiving the upgrading instruction. Such as those mentioned in application Ser. Nos. CN201510634073 and CN 201010274274. However, if the boot programming fails (for example, when the Flash is programmed, the power is cut off, and the Flash is abnormal, so that the programming fails, the programmed executable file is wrong, etc.), the boot lid has to be re-opened for programming; after long-time use, if some storage bits of Flash are abnormal, programming programs or user program loading fails; in addition, in order to reduce the probability of programming failure caused by power failure in the programming process, an external RAM is generally used for caching executable files, so that the requirement on the capacity of the RAM is high, and the RAM cannot be used in many occasions with limited single board volumes.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a remote upgrading method of a DSP program, which effectively improves the reliability of the remote upgrading of the DSP, not only improves the reliability of the programming guide execution of a user program, but also improves the reliability of the upgrading and execution of the programming guide program.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a remote upgrade method of a DSP program, comprising:
the remote PC end sends an upgrade protocol instruction which comprises a code matching instruction, a file data transmission instruction, a backup instruction and a recovery instruction;
the DSP is electrified to execute a bootstrap program and waits for receiving the code matching instruction;
and if the DSP receives the code matching instruction within the preset time, jumping to the programming program to upgrade and back up the programming program, or jumping to the programming program to upgrade and back up the user program.
Further, if the DSP does not receive the code matching instruction within the preset time, jumping to a user program, before jumping to the user program, detecting whether the file checksum of the user program is correct by the bootstrap program, and if so, executing the user program; and if the user program is incorrect, executing the backup program of the user program.
Further, before the remote PC end sends the upgrade protocol instruction, the hex.exe tool is utilized to convert the out file of the programming program or the user program into a bin file.
Further, before jumping to the programming program, the bootstrap program detects whether the file checksum of the programming program is correct, and if so, the programming program is executed; and if the program is incorrect, executing the backup program of the programming program.
Further, if the software number in the file data transmission instruction is the software number of the programming program, upgrading and backing up the programming program; and if the software number in the file data transmission instruction is the software number of the user program, upgrading and backing up the user program.
Further, the bin files of the programming program are decomposed and packed according to the file data transmission instruction and are transmitted to the DSP through the communication interface, the bin files of the programming program are firstly stored in a corresponding default area in Flash, the DSP is powered on again, the programming process is executed, if the programming program in the default area is executed, a backup instruction is sent, the bin files of the programming program are copied from the corresponding default area in Flash to a backup area, and upgrading and backup are realized; if the program is not the programming program of the default area, copying the program of the backup area to the default area through the recovery instruction.
Further, the bin files of the user program are decomposed and packed according to the file data transmission instructions and are transmitted to the DSP through the communication interface, and the bin files of the user program are directly stored in a default area and a backup area corresponding to the Flash, so that upgrading and backup are realized.
Further, before remote upgrade is used for the first time, the bootstrap program and the programming program are programmed into Flash of the DSP by using an emulator.
Further, the DSP power-on execution boot program specifically includes: initializing a clock, an interrupt, a timer and a communication interface of the DSP, and waiting for the upgrade protocol instruction and the program jump function in a preset time.
Compared with the prior art, the invention has at least the following beneficial effects: the invention provides a remote upgrading method of a DSP program, which provides a method for independently booting the program, programming the protocol program and the user program, and splits the traditional booting programming program into two independent booting programs and programming protocol programs. The boot program is placed at the beginning of Flash, the boot program cut to the optimal minimum executes simple initialization, and the like to receive the upgrade protocol instruction and the file verification boot function; the programming part with the protocol is stored and executed as an independent program, and redundant backup is carried out on the programming program and the user program in Flash. The function of the guide program is fixed, the change is not needed after the programming is performed once, the programming program with a protocol (usually with auxiliary functions such as parameter binding) and the user program often need to be maintained and upgraded, the design of redundancy backup ensures that when the programming program of one area fails due to power failure or communication problem upgrading, the backup program can be used for replacing execution, and meanwhile, the backup program can also be used for detecting and recovering the programming area with the programming failure; the redundancy backup can reduce the probability of program loading failure caused by damage of individual storage points when Flash is used for a long time, and in addition, programming failure caused by power failure and other reasons is not required to be worried about by adopting the backup design, so that the reliability of programming programs and boot programs is improved.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a device architecture of a method for remote upgrade of a DSP program of the present invention;
FIG. 2 is a program distribution diagram of a remote upgrade method of a DSP program according to the present invention;
fig. 3 is a main flow chart of remote upgrade operation of a remote upgrade method of DSP program according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As a specific embodiment of the present invention, a remote upgrade method for DSP program includes:
the remote PC end sends an upgrade protocol instruction, wherein the upgrade protocol instruction comprises a code matching instruction, a file data transmission instruction, a backup instruction and a recovery instruction; specifically, before the remote PC end sends an upgrade protocol instruction, converting an out file of a programming program or a user program into a bin file by using a hex.exe tool;
the DSP is electrified to execute a bootstrap program and waits for receiving a code matching instruction; specifically, the power-on execution bootstrap program of the DSP specifically includes: initializing a clock, an interrupt, a timer and a communication interface of the DSP, and waiting for an upgrade protocol instruction in a preset time;
if the DSP receives the code matching instruction within the preset time, the DSP jumps to the programming program to upgrade and back up the programming program itself, or jumps to the programming program to upgrade and back up the user program;
specifically, before jumping to the programming program, the bootstrap program detects whether the file checksum of the programming program is correct, and if so, the programming program is executed; if not, executing a backup program of the programming program;
if the software number in the file data transmission instruction is the software number of the programming program, upgrading and backing up the programming program; if the software number in the file data transmission instruction is the software number of the user program, upgrading and backing up the user program;
the method comprises the steps that bin files of a programming program are decomposed and packaged according to file data transmission instructions, the bin files are transmitted to a DSP through a communication interface, the bin files of the programming program are stored in a corresponding default area in Flash, the DSP is powered on again, a programming flow is executed, if the programming program in the default area is executed, a backup instruction is sent, and the bin files of the programming program are copied from the corresponding default area in Flash to a backup area, so that upgrading and backup are realized; if the program is not the programming program of the default area, copying the program of the backup area to the default area through a recovery instruction;
the bin files of the user program are decomposed and packed according to the file data transmission instructions, and are transmitted to the DSP through the communication interface, and the bin files of the user program are directly stored in the default area and the backup area corresponding to the Flash, so that upgrading and backup are realized.
If the DSP does not receive the code matching instruction within the preset time, jumping to the user program, before jumping to the user program, detecting whether the file checksum of the user program is correct by the guide program, and if so, executing the user program; if not, executing the backup program of the user program.
In the invention, before remote upgrade is used for the first time, a bootstrap program and a programming program are programmed into Flash of the DSP by using an emulator.
Aiming at the requirements of high reliability of DSP remote upgrading, the invention provides a method for independently booting a program, programming a protocol program and a user program, which effectively solves the problems that the booting programming program is failed to upgrade and the program cannot be started due to programming errors or power failure and the like; and meanwhile, the redundancy backup enables the program to have a recovery function.
The invention is explained in more detail below in connection with the following.
The technical scheme of the invention effectively improves the reliability of remote upgrade of the DSP, not only improves the reliability of the programming guide execution of the user program, but also improves the reliability of the upgrade and execution of the programming guide program. The method comprises the following steps:
in the scheme of the invention, three software are included, and a bootstrap program BootSoft is marked as R1; the programming program burns soft, noted R2; the user program UserSoft is denoted R3. The three pieces of software correspond to three pieces of file configuration information CfgR1, cfgR2 and CfgR3, and the file configuration information comprises information such as a checksum, a software version number, a programming date and the like of the executable file. In addition to the boot program R1 having to be programmed at the beginning of Flash (determined by the operating mechanism of the DSP), other software and file configuration information are stored in different areas of Flash. The backup software of R2 and R3 is denoted as R2B and R3B, and the file configuration information CfgR2B and CfgR3B is spatially distributed as shown in FIG. 1. Before programming, the out file needs to be converted into a bin file by using a hex.exe tool provided by TI authorities, and before remote upgrading is used for the first time, R1 and R2 are programmed into a Flash corresponding area by using JTAG. The communication structure of remote upgrade is shown in fig. 1, and the system program distribution structure is shown in fig. 2.
After the DSP is powered on, the program starts to be executed from the position with the Flash offset address of 0, and R1 is executed first. And R1 completes the initialization of a DSP clock, an interrupt, a timer and a communication port. And setting a timer to wait for a plurality of times according to project requirements, judging whether an upgrade instruction is received in the waiting time, checking a user program R3 (compared with a checksum stored by CfgR 3) if the upgrade instruction is overtime, executing R3 if the user program R3 is checked to be correct, otherwise checking R3B if the user program R3 is checked to be correct, executing the user program R3 if the user program R3 is checked to be correct, and jumping out of a program branch to wait in a circulating manner. If the upgrade instruction is not received overtime, the DSP selects to execute R2 or R2B according to the software number in the instruction, executes R2 by default, firstly checks the programming program R2 (compared with the checksum stored by CfgR 2), executes R2 correctly, otherwise, electrifies again to select to execute R2B, checks correctly, otherwise, jumps out of the program branch circulation waiting, and feeds back the execution state of R2 or R2B to the upper computer in the process. The main flow of remote upgrade is shown in fig. 3.
If an upgrade instruction of the upper computer is received, the programming program is started to execute. And the upper computer packages and transmits the bin file configuration information and bin file information of the software to be programmed to the DSP according to a protocol, and the DSP judges whether R2 or R3 is programmed and upgraded according to the software number in the protocol, receives the related file data information, erases and stores the related file data information in a region corresponding to Flash.
For the user program R3, after receiving file configuration information and executable file data from an upper computer, the DSP stores the file configuration information and the executable file data in a Flash corresponding area, after verification is successful, R3 and CfgR3 are automatically copied to the areas of R3B and CfgR3B, and after the user program R3 is powered on again, if both R3 or R3B fails to execute or the Bug exists and needs to be updated, R3 and R3B are downloaded again.
For the monitoring program R2, the DSP receives file configuration information and executable file data from the upper computer and stores the file configuration information and the executable file data in a region corresponding to Flash. At this time, the backup area is not updated immediately, the instruction is sent again to execute programming monitoring, and the DSP selects to execute R2 or R2B according to the instruction information. If R2 is found to execute and function properly, a copy instruction may be sent to update R2 to backup region R2B. Otherwise, if the R2 fails to execute, the upper computer can send an instruction for executing the R2B to execute the R2B, and then send a recovery instruction to copy the R2B to the R2 area, or directly upgrade the R2 again, because of the existence of the R2B, even if the newly upgraded R2 is wrong due to power failure or the self cause of the program, the normal execution of the programming function is not affected.
File configuration information upload may be performed. The upper computer can read the file configuration information of R1, R2, R3 and R2B, R B, and further obtain information such as checksum, version number, writing date and the like.
File downloads may be performed. The upper computer can read and store the executable file stored in the Flash through the DSP.
The invention can achieve the following specific effects:
(1) The method for independently guiding the program, programming protocol program and user program can realize the upgrade of the programming program and the user program, and has higher fault tolerance and reliability.
(2) The redundant backup programming program can select to execute a default program or a backup program through instructions, the re-power-on upgrade cannot be affected even if the upgrade is wrong, and the backup program can be restored even if the programming of the default program area fails.
(3) And the user program double backup improves the reliability of user program execution.
(4) The writing or the uploading and the downloading of the user program executable file and the configuration information can be realized at the same time.
Taking a DSP6713 platform as an example, the hardware platform for remote upgrading is formed by connecting an EMIF external Flash and a PC of an upper computer through a serial port RS 422.
The boot software R1 is programmed in a Flash sector0 area starting from 0x90000000, R2 is programmed in Flash sector 1-2 areas, R3 is programmed in sector 3-5 areas, R2B is programmed in sector 6-7 areas, and R3B is programmed in sector 8-10 areas. The file configuration information is written in the sector11 area.
The R1 programming realizes interface initialization, design waiting instruction and file check skip function, the R2 realizes executable file and configuration information downloading and uploading function, software copying function and software recovering function, and the R3 is user program. Through the test of matched upper computer software, the functions are all realized. The test results show that the invention has good feasibility and the performance meets the expectations.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A method for remotely upgrading a DSP program, comprising:
the remote PC end sends an upgrade protocol instruction which comprises a code matching instruction, a file data transmission instruction, a backup instruction and a recovery instruction;
the DSP is electrified to execute a bootstrap program and waits for receiving the code matching instruction;
if the DSP receives the code matching instruction within the preset time, the DSP jumps to the programming program to upgrade and back up the programming program itself, or jumps to the programming program to upgrade and back up the user program;
before a remote PC end sends an upgrade protocol instruction, converting an out file of the programming program or the user program into a bin file by using a hex.exe tool;
the bin files of the user program are decomposed and packed according to the file data transmission instructions and are transmitted to the DSP through the communication interface, and the bin files of the user program are directly stored in a default area and a backup area corresponding to the Flash, so that upgrading and backup are realized;
before jumping to the programming program, the bootstrap program detects whether the file checksum of the programming program is correct, and if so, the programming program is executed; if not, executing the backup program of the programming program;
if the software number in the file data transmission instruction is the software number of the programming program, upgrading and backing up the programming program; if the software number in the file data transmission instruction is the software number of the user program, upgrading and backing up the user program;
the bin files of the programming program are decomposed and packed according to the file data transmission instruction and are transmitted to the DSP through the communication interface, the bin files of the programming program are firstly stored in a corresponding default area in Flash, the DSP is powered on again, the programming process is executed, if the programming program in the default area is executed, a backup instruction is sent, and the bin files of the programming program are copied from the corresponding default area in Flash to a backup area, so that upgrading and backup are realized; if the program is not the programming program of the default area, copying the program of the backup area to the default area through the recovery instruction.
2. The method for remote upgrade of a DSP program according to claim 1, wherein if the DSP does not receive the code matching instruction within a preset time, the DSP jumps to a user program, and before jumping to the user program, the bootstrap detects whether the file checksum of the user program is correct, and if so, the user program is executed; and if the user program is incorrect, executing the backup program of the user program.
3. The method for remote upgrade of DSP program according to claim 1, wherein the boot program and the programming program are programmed into Flash of DSP by using an emulator before remote upgrade is first used.
4. The method for remote upgrade of DSP program according to claim 1, wherein the DSP power-on execution boot program specifically comprises: initializing a clock, an interrupt, a timer and a communication interface of the DSP, and waiting for the upgrade protocol instruction and the program jump function in a preset time.
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| CN113190258A (en) * | 2021-05-18 | 2021-07-30 | 合肥工业大学 | Eight-core DSP software offline upgrading method based on serial port |
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| CN106874056A (en) * | 2017-03-14 | 2017-06-20 | 成都天奥电子股份有限公司 | TI C2000 DSP serial ports online upgrading methods based on Ymodem |
| CN107329776A (en) * | 2017-05-31 | 2017-11-07 | 南京航空航天大学 | A kind of method of raising DSP online upgrading fault freedoms |
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