CN111736882A - Remote upgrading method for DSP program - Google Patents
Remote upgrading method for DSP program Download PDFInfo
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- CN111736882A CN111736882A CN202010555272.3A CN202010555272A CN111736882A CN 111736882 A CN111736882 A CN 111736882A CN 202010555272 A CN202010555272 A CN 202010555272A CN 111736882 A CN111736882 A CN 111736882A
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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 terminal sends an upgrading protocol instruction, wherein the upgrading protocol instruction 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, skipping to a programming program to upgrade and backup the programming program, or skipping to the programming program to upgrade and backup a user program. The invention effectively improves the reliability of DSP remote upgrade, not only improves the reliability of programming and guiding execution of the user program, but also improves the reliability of updating and executing the programming and guiding program.
Description
Technical Field
The invention belongs to the field of embedded equipment, and particularly relates to a remote upgrading method for a DSP program.
Background
A Digital Signal Processor (DSP) is a digital signal processing device and is widely used in the fields of industrial control, image processing, communication, navigation, and the like.
Usually, in a device containing a DSP chip, a program is programmed in Flash through JTAG at the time of shipment, and is packaged in a case along with a single board. However, before the product is mature, the program is often required to be changed and upgraded, if the JTAG programming is used, the JTAG interface is not available outside the case generally, the case needs to be uncapped for processing, the case has a risk of introducing redundancy, and when the number of products is large, the workload of maintenance personnel is large, and the maintainability is poor.
The problems can be solved by remote upgrading through communication interfaces such as serial ports. TI provides a third-party tool C2Prog software which can carry out serial port upgrade on partial DSP chips, and has the defects that the chip needs to be set to be in an SCI starting mode, the selectable frequency of a crystal oscillator is limited, the application is limited, and Flash is used for starting in most occasions in practical use. In addition, a method is that an upgrading module is added in a user code, an upgrading programming code and a user application code are mixed and compiled, after an upgrading process is carried out, programming and communication part codes are moved to an RAM for execution, Bin file data of an executable file is received through a communication interface and stored in Flash, and remote upgrading of a serial port can be realized.
In addition, a widely adopted remote upgrading method for operating the boot programming program and the user program independently adopts a method of delaying power-on for waiting for an upgrading instruction, jumps to the user program when waiting for overtime, and operates a programming upgrading branch to upgrade the boot programming program or the user program when receiving the upgrading instruction. Such as the methods mentioned in application nos. [ CN201510634073] and [ CN201010274274 ]. However, if the programming of the programming program is guided to fail (for example, power is off when Flash is programmed, the programming fails due to abnormal Flash, an executable file programmed to fail is wrong, and the like), the cover has to be opened again for programming; after long-time use, if some storage bits of the Flash are abnormal, programming or user program loading failure can be caused; in addition, in order to reduce the probability of programming failure caused by power failure in the programming process, an external RAM is usually used for caching executable files, the requirement on the capacity of the RAM is high, and the executable files cannot be used in many occasions with limited single board volume.
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 DSP remote upgrading, not only improves the reliability of programming and guiding execution of a user program, but also improves the reliability of programming and guiding program upgrading and execution.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a remote upgrading method of a DSP program comprises the following steps:
the remote PC terminal sends an upgrading protocol instruction, wherein the upgrading protocol instruction 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, skipping to a programming program to upgrade and backup the programming program, or skipping to the programming program to upgrade and backup a user program.
Further, if the DSP does not receive the code matching instruction within a preset time, jumping to a user program, before jumping to the user program, the bootstrap program detects whether a file checksum of the user program is correct, and if so, executing the user program; and if not, executing the backup program of the user program.
Further, before the remote PC sends an upgrade protocol instruction, the out file of the programming program or the user program is converted into a bin file by using a hex.
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 not, executing a 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, the programming program is upgraded and backed up; 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 file of the programming program is decomposed and packaged according to the file data transmission instruction, the file data transmission instruction is transmitted to the DSP through a communication interface, the bin file of the programming program is stored in a corresponding default area in Flash, the DSP is electrified again, a programming flow is executed, if the executed programming program of the default area is executed, a backup instruction is sent, the bin file of the programming program is copied to a backup area from the corresponding default area in Flash, and upgrading and backup are achieved; and if the executed program is not the program for programming the default area, copying the program of the backup area to the default area through the recovery instruction.
Furthermore, the bin file of the user program is decomposed and packaged according to the file data transmission instruction, and is transmitted to the DSP through a communication interface, and the bin file of the user program is directly stored in a corresponding default area and a corresponding backup area in Flash, so that upgrading and backup are realized.
Further, before the remote upgrade is used for the first time, the boot program and the programming program are programmed into a Flash of the DSP by using an emulator.
Further, the step of powering on the DSP to execute the boot program specifically includes: initializing a clock, an interrupt, a timer and a communication interface of the DSP, waiting for the upgrading protocol instruction within preset time and performing program jump function.
Compared with the prior art, the invention has at least the following beneficial effects: the invention provides a method for remotely upgrading a DSP program, and provides a method for independently booting a program, programming a protocol program and a user program, which divides the traditional booting programming program into two independent booting programs and programming protocol programs. The bootstrap program is placed at the beginning of Flash, and the bootstrap program which is cut to the optimal minimum is simply initialized to execute, and the functions of receiving an upgrade protocol instruction and checking and guiding files are achieved; the programming part with the protocol is used as an independent program for storage and execution, and meanwhile, redundancy backup is carried out on the programming program and the user program in Flash. The function of a bootstrap program is fixed, the program is not required to be changed after programming once, a programming program with a protocol (usually accompanied by auxiliary functions such as parameter binding) and a user program are usually required to be maintained and upgraded, and the design of redundancy backup ensures that when the programming program in one area is upgraded and failed due to power failure or communication problems, the backup program can be used for replacing execution, and meanwhile, the backup program can be used for detecting and recovering a program area with 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 needed to be worried by adopting a backup design, so that the reliability of programming programs and boot programs is improved.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of an apparatus structure of a method for remotely upgrading a DSP program according to the present invention;
FIG. 2 is a program distribution diagram of a remote upgrading method of DSP program according to the present invention;
fig. 3 is a main flowchart of the remote upgrade operation of the remote upgrade method of a DSP program according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As a specific embodiment of the present invention, a method for remotely upgrading a DSP program includes:
the remote PC terminal sends an upgrading protocol instruction, wherein the upgrading protocol instruction comprises a code matching instruction, a file data transmission instruction, a backup instruction and a recovery instruction; specifically, before the remote PC sends an upgrade protocol instruction, an out file of a programming program or a user program is converted 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 step of powering on the DSP to execute the boot program specifically includes: initializing a clock, an interrupt, a timer and a communication interface of the DSP, and waiting for upgrading a protocol instruction and a program jump function within a preset time;
if the DSP receives the code matching instruction within the preset time, skipping to the programming program to upgrade and backup the programming program, or skipping to the programming program to upgrade and backup 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 bin file of the programming program is decomposed and packaged according to a file data transmission instruction, the file data transmission instruction is transmitted to a DSP (digital signal processor) through a communication interface, the bin file of the programming program is stored in a corresponding default area in Flash, the DSP is electrified again, the programming flow is executed, if the executed programming program of the default area is executed, a backup instruction is sent, the bin file of the programming program is copied to a backup area from the corresponding default area in Flash, and upgrading and backup are achieved; if the program is not the program for programming the default area, copying the program of the backup area to the default area through a recovery instruction;
and the bin file of the user program is decomposed and packaged according to the file data transmission instruction, is transmitted to the DSP through the communication interface, and is directly stored in a corresponding default area and a corresponding backup area in Flash to realize upgrading and backup.
If the DSP does not receive the code matching instruction within the preset time, skipping to the user program, before skipping to the user program, detecting whether the file checksum of the user program is correct or not by the bootstrap program, and if so, executing the user program; and if not, executing a backup program of the user program.
In the invention, before the remote upgrade is used for the first time, a bootstrap program and a programming program are programmed into the Flash of the DSP by using the simulator.
The invention provides a method for independently guiding a program, a programming protocol program and a user program aiming at the requirement of DSP remote upgrading on high reliability, and effectively solves the problems that the program cannot be started because the programming is failed to be upgraded due to programming error or power failure and the like; and meanwhile, redundant backup enables the program to have a recovery function.
The invention is explained in more detail below with reference to the following description.
The technical scheme of the invention effectively improves the reliability of DSP remote upgrade, not only improves the reliability of programming and guiding execution of the user program, but also improves the reliability of updating and executing the programming and guiding program. The method comprises the following specific steps:
in the scheme of the invention, three pieces of software are included, and a bootstrap program BootSoft is recorded as R1; programming program BurnSoft, noted as R2; the user program UserSoft, noted as 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 of an executable file, a software version number, a burning date and the like. Except that the boot program R1 has to be burned in at the beginning of Flash (as determined by the working mechanism of the DSP), other software and file configuration information is stored in different areas of Flash. Backup software of R2 and R3 is recorded as R2B and R3B, and file configuration information CfgR2B and CfgR3B, and the spatial distribution of the backup software is shown in the attached figure 1. Out files need to be converted into bin files using hex. exe tools provided by TI authorities before burning, and R1 and R2 need to be burned into Flash corresponding areas using JTAG before remote upgrade first use. The communication structure of the 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 execute from the Flash offset address of 0, and R1 is executed firstly. R1 completes the initialization of DSP clock, interrupt, timer and communication port. Setting a timer to wait for a plurality of times according to project requirements, judging whether an upgrade instruction is received within the waiting time, checking the user program R3 (compared with the checksum stored by CfgR 3) if the upgrade instruction is overtime, executing R3 if the upgrade instruction is correct, otherwise checking R3B, executing if the upgrade instruction is correct, and otherwise jumping out of the program branch loop for waiting. 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 if the programming program is correct, otherwise, powers on again to select to execute R2B, checks the programming program if the programming program is correct, otherwise jumps out of the program branch loop to wait, 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.
And if an upgrading instruction of the upper computer is received, entering a programming program for execution. And the upper computer packs bin file configuration information and bin file information of software to be programmed according to a protocol and sends the packed bin file configuration information and bin file information to the DSP, the DSP judges whether programming upgrade is performed on R2 or R3 according to the software number in the protocol, and relevant file data information is received, erased and stored in an area corresponding to Flash.
For the user program R3, the DSP receives file configuration information and executable file data from an upper computer and then stores the file configuration information and the executable file data in a corresponding Flash area, after verification is successful, the DSP automatically copies R3 and CfgR3 to the areas of R3B and CfgR3B, and after power is re-powered on, if R3 or R3B fails to execute or the Bug needs to be updated, the DSP downloads R3 and R3B again.
For the monitoring program R2, the DSP receives the file configuration information and the executable file data from the upper computer and then stores the file configuration information and the executable file data in the area corresponding to the Flash. At this time, the backup area is not updated immediately, the power is turned on again to send the instruction to execute programming monitoring, and the DSP selects to execute R2 or R2B according to the instruction information. If R2 is found to be executing and functioning properly, a copy command may be sent to update R2 to the backup area R2B. Otherwise, if the host computer can send an instruction for executing the R2B to execute the R2B if the R2 fails to execute, then send a recovery instruction to copy the R2B to the region of the R2, or directly upgrade the R2 again, due to the existence of the R2B, even if the newly upgraded R2 is in error due to power failure or the program itself, the normal execution of the programming function cannot be influenced.
Uploading the configuration information of the executable file. The upper computer can read the file configuration information of R1, R2, R3, R2B and R3B, and further acquire information such as checksum, version number and programming date.
File downloading 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 the protocol program and the user program can realize the upgrading 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 the default program or the backup program through instructions, the power-on upgrading cannot be influenced even if the upgrading is wrong, and the redundant backup programming program can be recovered through the backup program even if the programming of the default program area fails.
(3) The user program double backup improves the reliability of the user program execution.
(4) Programming or uploading and downloading of the user program executable file and the configuration information can be simultaneously realized.
Taking the DSP6713 platform as an example, the Flash is externally connected through the EMIF, and the remote upgrading hardware platform is formed by connecting the Flash with an upper computer PC through a serial port RS 422.
The method comprises the steps of programming guide software R1 in a Flash sector0 area starting from 0x90000000, programming R2 in a Flash sector 1-2 area, programming R3 in a sector 3-5 area, programming R2B in a sector 6-7 area, and programming R3B in a sector 8-10 area. The file configuration information is programmed in the sector11 area.
The R1 programming realizes the functions of interface initialization, design instruction waiting and file verification jumping, the R2 realizes the functions of downloading and uploading executable files and configuration information, software copying and software recovery, and the R3 is a user program. And the functions are all realized through the software test of the matched upper computer. The test result shows that the invention has good feasibility and the performance meets the expectation.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method for remotely upgrading a DSP program is characterized by comprising the following steps:
the remote PC terminal sends an upgrading protocol instruction, wherein the upgrading protocol instruction 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, skipping to a programming program to upgrade and backup the programming program, or skipping to the programming program to upgrade and backup a user program.
2. The method for remotely upgrading a DSP program according to claim 1, wherein if the DSP does not receive the code matching instruction within a preset time, jumping to a user program, before jumping to the user program, the bootstrap program detecting whether a file checksum of the user program is correct, and if so, executing the user program; and if not, executing the backup program of the user program.
3. The method according to claim 1, wherein before the remote PC sends the upgrade protocol command, the out file of the programming program or the user program is converted into a bin file by using a hex.
4. The method for remotely upgrading the DSP program according to claim 3, wherein before jumping to the programming program, the bootstrap program detects whether a file checksum of the programming program is correct, and if so, executes the programming program; and if not, executing a backup program of the programming program.
5. The method for remotely upgrading the DSP program according to claim 4, wherein if the software number in the file data transmission instruction is the software number of the programming program, the programming program is upgraded and backed up; 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.
6. The remote upgrading method of the DSP program according to claim 5, wherein the bin file of the programming program is decomposed and packed according to the file data transmission instruction, and is transmitted to the DSP through a communication interface, the bin file of the programming program is firstly stored in a corresponding default area in Flash, the DSP is electrified again to execute a programming flow, if the programming program of the default area is executed, a backup instruction is sent to copy the bin file of the programming program from the corresponding default area in Flash to a backup area, and upgrading and backup are realized; and if the executed program is not the program for programming the default area, copying the program of the backup area to the default area through the recovery instruction.
7. The remote upgrading method of the DSP program according to claim 5, wherein the bin file of the user program is decomposed and packed according to the file data transmission instruction, and is transmitted to the DSP through a communication interface, and the bin file of the user program is directly stored in a corresponding default area and a corresponding backup area in Flash to realize upgrading and backup.
8. The method according to claim 1, wherein the boot program and the programming program are programmed into Flash of the DSP by using an emulator before the remote upgrade is used for the first time.
9. The method according to claim 1, wherein the step of powering on the DSP to execute the boot program specifically comprises: initializing a clock, an interrupt, a timer and a communication interface of the DSP, waiting for the upgrading protocol instruction within preset time and performing program jump function.
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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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| CN111736882B (en) | 2023-06-02 |
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