CN107153613B - BootLoader program debugging method and system based on HCS12 single-chip microcontroller - Google Patents
BootLoader program debugging method and system based on HCS12 single-chip microcontroller Download PDFInfo
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- CN107153613B CN107153613B CN201710329742.2A CN201710329742A CN107153613B CN 107153613 B CN107153613 B CN 107153613B CN 201710329742 A CN201710329742 A CN 201710329742A CN 107153613 B CN107153613 B CN 107153613B
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- 239000013598 vector Substances 0.000 claims abstract description 61
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 230000009191 jumping Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- G06F11/362—Software debugging
- G06F11/3648—Software debugging using additional hardware
- G06F11/3652—Software debugging using additional hardware in-circuit-emulation [ICE] arrangements
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Abstract
The invention discloses BootLoader program debugging methods and system based on HCS12 single-chip microcontroller；The interrupt vector table of BootLoader program is as the first interrupt vector table, and the interrupt vector table of application program is as the second interrupt vector table；Single-chip microcontroller is loaded an application by BootLoader program, two interrupt vector tables are integrally formed new interrupt vector table according to address, to realize the address covering of two interrupt vector tables；Electricity operation on HCS12 single-chip microcontroller runs the startup program of BootLoader program；BootLoader program judges itself whether need to load new application program；Then, the main program of new application program is run；It arrives if external hardware interrupts, directly runs the interrupt service routine of application program.There is application program can be debugged with Bootloader program with Straight simulation for it, and application program is not required to make the advantages of any modification is directly downloaded by Bootloader mode after having debugged.
Description
Technical field
The present invention relates to a kind of BootLoader program debugging methods and system based on HCS12 single-chip microcontroller.
Background technique
BootLoader program provides a kind of not in such a way that emulator downloads program.BootLoader program is responsible for
Hardware is initialized, application program remote load is realized in the case where not dismantling casing.
Program download process are as follows:
1) BootLoader program downloads to single-chip microcontroller by emulator；
2) application program is loaded into single-chip microcontroller by BootLoader program according to specific interface；
BootLoader program and application program share an interrupt vector table, and interrupt service routine is in BootLoader journey
It is displaced to application program position in sequence, causes application program interrupt vector is imperfect directly can not independently emulate；Simultaneously in addition
Disconnected service routine, which needs first to add in BootLoader program, interrupts offset code, causes constantly to modify when upgrade applications
BootLoader program can not play the advantage of BootLoader program.
Above scheme has the following problems:
Application program cannot be debugged directly in scheme, and needing to change interrupt service routine address could artificial debugging；When need
It wants to need when the interrupt service routine of upgrade applications while changing BootLoader program.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems, provides a kind of BootLoader based on HCS12 single-chip microcontroller
Program debugging method and system, there is application program can be debugged with Bootloader program with Straight simulation for it, application program tune
It is not required to make the advantages of any modification is directly downloaded by Bootloader mode after having tried.
To achieve the goals above, the present invention adopts the following technical scheme:
BootLoader program debugging method based on HCS12 single-chip microcontroller, comprising:
Step (1): the interrupt vector table of BootLoader program as the first interrupt vector table, the interruption of application program to
Scale is as the second interrupt vector table；
Step (2): loading an application into single-chip microcontroller by BootLoader program, by two interrupt vector tables according to
Address is integrally formed new interrupt vector table, to realize the address covering of two interrupt vector tables；
Step (3): electricity operation on HCS12 single-chip microcontroller runs the startup program of BootLoader program；
Step (4): BootLoader program judges itself whether need to load new application program；Then, it runs new
The main program of application program；
Step (5): arriving if external hardware interrupts, and directly runs the interrupt service routine of application program.
Further, the step of step (2) are as follows:
Step (21): it is the first offset address that the second interrupt vector table, which is directed toward address, and the first offset address is in HCS12 monolithic
The non-paging area the Flash of machine；
Step (22): the first interrupt vector table is directed toward the address that the first offset address adds n byte；From the first offset ground
Location starts plus the address of n byte；Wherein, n >=4；
Step (23): when loading an application into single-chip microcontroller by BootLoader program, two interrupt vectors are realized
The address of table covers, and new interrupt vector table is directed toward the interrupt service routine of application program.
Further, step (2) application program can independent artificial debugging, artificial debugging success after, be not required to change, directly
Being loaded into single-chip microcontroller by BootLoader program can run.
Further, the step of step (4) are as follows: the startup program of BootLoader program judges whether itself needs
Load new application program；If desired (41) are entered step；If not needing to enter step (42)；
Step (41): startup program automatic running completes the downloading of new application program, then, runs new application journey
The main program of sequence；
Step (42): jumping to the startup program of application program, then starts the main program for starting application program.
Further, the startup program automatic running of the step (41), after the downloading for completing new application program, fortune
Before the main program of the new application program of row, following steps are needed to be implemented:
The S19 file generated after compiling of application by BootLoader program when being loaded, by the journey in S19 file
Sequence load address is that four line programs of FF80, FFA0, FFC0, FFE0 are deleted.
BootLoader program debugging system based on HCS12 single-chip microcontroller, comprising:
Initialization unit: the interrupt vector table of BootLoader program is as the first interrupt vector table, in application program
Vector table break as the second interrupt vector table；
Integral unit: loading an application into single-chip microcontroller by BootLoader program, by two interrupt vector table roots
New interrupt vector table is integrally formed according to address, to realize the address covering of two interrupt vector tables；
Power on running unit: electricity operation on HCS12 single-chip microcontroller runs the startup program of BootLoader program；
Judging unit: BootLoader program judges itself whether need to load new application program；Then, it runs new
The main program of application program
It interrupts execution unit: arriving if external hardware interrupts, directly run the interrupt service routine of application program.
Further, the integral unit includes:
Be directed toward module in the first address: it is the first offset address that the second interrupt vector table, which is directed toward address, and the first offset address exists
The non-paging area the Flash of HCS12 single-chip microcontroller；
Be directed toward module in the second address: the first interrupt vector table is directed toward the first offset address plus the ground of a byte of n (n >=4)
Location；Since the first offset address is plus the address of n byte；
Address overlay module: when loading an application into single-chip microcontroller by BootLoader program, two interruptions are realized
The address of vector table covers, and new interrupt vector table is directed toward the interrupt service routine of application program.
Further, the integral unit application program can independent artificial debugging, artificial debugging success after, be not required to more
Change, being directly loaded into single-chip microcontroller by BootLoader program can run.
Further, the judging unit: it is new whether the startup program of BootLoader program judges itself to need to load
Application program；If desired, then startup program automatic running, completes the downloading of new application program, then, runs new application
The main program of program；If not needing, the startup program of application program is jumped to, then starts the main journey for starting application program
Sequence.
Further, startup program automatic running after the downloading for completing new application program, runs new application program
Main program before, need to be implemented following steps:
The S19 file generated after compiling of application by BootLoader program when being loaded, by the journey in S19 file
Sequence load address is that four line programs of FF80, FFA0, FFC0, FFE0 are deleted.
Beneficial effects of the present invention:
1) application program can be debugged with Bootloader program with Straight simulation, and application program is not required to appoint after having debugged
What modification is directly downloaded by Bootloader mode.
2) application program can directly add interrupt service routine, and it is inclined not need the progress address in Bootloader program
It moves, later program upgrading only need to modify application program, and Bootloader program is no longer modified.
The interrupt address of HCS12 single-chip microcontroller BootLoader program and application program covers the non-paging area Flash, realizes
Application program independently emulates and arbitrarily adds interrupt service routine.
Detailed description of the invention
Fig. 1 is Bootloader interrupt vector table；
Fig. 2 is application program interrupt vector table；
Fig. 3 is the interruption after loading application programs；
Fig. 4 is program flow chart after resetting.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
In this method, BootLoader program and application program respectively use a complete interrupt vector table, two such journey
Sequence can be emulated independently；When being loaded an application into single-chip microcontroller by BootLoader program simultaneously, two interrupt vectors
Table realizes address covering, is integrated into a complete interrupt vector table.
Application program interrupt vector table is directed toward address since 0x4000, is the non-paging area HCS12 single-chip microcontroller Flash,
Bootloader interrupt vector table is directed toward at the 0x4000 of address and vacates 4 bytes, since 0x4004；
When by Bootloader loading application programs, address covering is realized, interrupt vector table is pointing directly at application program
Interrupt service routine.
The S19 file generated after compiling of application by BootLoader program when being loaded, by the journey in S19 file
Sequence load address is that four line programs of FF80, FFA0, FFC0, FFE0 are deleted.
Two independent interrupt vector tables are as shown in Fig.1 and Fig.2.Interrupt vector table such as Fig. 3 institute after loading application programs
Show.
When downloading program with BootLoader mode, two independent interrupt vector tables can be combined into one by address covering
, as shown in figure 3, entire program flow chart is as shown in Figure 4.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. the BootLoader program debugging method based on HCS12 single-chip microcontroller, characterized in that include:
Step (1): the interrupt vector table of BootLoader program is as the first interrupt vector table, the interrupt vector table of application program
As the second interrupt vector table；
Step (2): loading an application into single-chip microcontroller by BootLoader program, by two interrupt vector tables according to address
It is integrally formed new interrupt vector table, to realize the address covering of two interrupt vector tables；Step (2) application program can be only
Vertical artificial debugging is not required to change after artificial debugging success, and being directly loaded into single-chip microcontroller by BootLoader program can transport
Row；
Step (3): electricity operation on HCS12 single-chip microcontroller runs the startup program of BootLoader program；
Step (4): BootLoader program judges itself whether need to load new application program；Then, new application is run
The main program of program；
Step (5): arriving if external hardware interrupts, and directly runs the interrupt service routine of application program.
2. as described in claim 1 based on the BootLoader program debugging method of HCS12 single-chip microcontroller, characterized in that
The step of step (2) are as follows:
Step (21): it is the first offset address that the second interrupt vector table, which is directed toward address, and the first offset address is in HCS12 single-chip microcontroller
The non-paging area Flash；
Step (22): the first interrupt vector table is directed toward the address that the first offset address adds n byte；Add from the first offset address
The address of upper n byte starts；Wherein, n >=4；
Step (23): when loading an application into single-chip microcontroller by BootLoader program, two interrupt vector tables are realized
Address covering, new interrupt vector table are directed toward the interrupt service routine of application program.
3. as described in claim 1 based on the BootLoader program debugging method of HCS12 single-chip microcontroller, characterized in that
The step of step (4) are as follows: the startup program of BootLoader program judges itself whether need to load new application
Program；If desired (41) are entered step；If not needing to enter step (42)；
Step (41): startup program automatic running completes the downloading of new application program, then, runs new application program
Main program；
Step (42): jumping to the startup program of application program, then starts the main program for starting application program.
4. as claimed in claim 3 based on the BootLoader program debugging method of HCS12 single-chip microcontroller, characterized in that
The startup program automatic running of the step (41) after the downloading for completing new application program, runs new application journey
Before the main program of sequence, following steps are needed to be implemented:
The S19 file generated after compiling of application adds the program in S19 file when being loaded by BootLoader program
Set address is that four line programs of FF80, FFA0, FFC0, FFE0 are deleted.
5. the BootLoader program debugging system based on HCS12 single-chip microcontroller, characterized in that include:
Initialization unit: the interrupt vector table of BootLoader program as the first interrupt vector table, the interruption of application program to
Scale is as the second interrupt vector table；
Integral unit: loading an application into single-chip microcontroller by BootLoader program, by two interrupt vector table base areas
Location is integrally formed new interrupt vector table, to realize the address covering of two interrupt vector tables；Integral unit application program can
It is not required to change after artificial debugging success with independent artificial debugging, single-chip microcontroller is directly loaded by BootLoader program
Operation；
Power on running unit: electricity operation on HCS12 single-chip microcontroller runs the startup program of BootLoader program；
Judging unit: BootLoader program judges itself whether need to load new application program；Then, new application is run
The main program of program；
It interrupts execution unit: arriving if external hardware interrupts, directly run the interrupt service routine of application program.
6. system as claimed in claim 5, characterized in that
The integral unit includes:
Be directed toward module in the first address: it is the first offset address that the second interrupt vector table, which is directed toward address, and the first offset address is in HCS12
The non-paging area the Flash of single-chip microcontroller；
Be directed toward module in the second address: the first interrupt vector table is directed toward the address that the first offset address adds n byte；Partially from first
The address that address is moved plus n byte starts；
Address overlay module: when loading an application into single-chip microcontroller by BootLoader program, two interrupt vectors are realized
The address of table covers, and new interrupt vector table is directed toward the interrupt service routine of application program.
7. system as claimed in claim 5, characterized in that
The judging unit: the startup program of BootLoader program judges itself whether need to load new application program；If
It needs, then startup program automatic running, completes the downloading of new application program, then, run the main program of new application program；
If not needing, the startup program of application program is jumped to, then starts the main program for starting application program.
8. system as claimed in claim 7, characterized in that
Startup program automatic running, after the downloading for completing new application program, before the main program for running new application program,
Need to be implemented following steps:
The S19 file generated after compiling of application adds the program in S19 file when being loaded by BootLoader program
Set address is that four line programs of FF80, FFA0, FFC0, FFE0 are deleted.
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| CN112395065A (en) * | 2020-11-26 | 2021-02-23 | 湖北开特汽车电子电器系统股份有限公司 | Interrupt service method and device for starting and loading embedded system |
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Address after: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee after: Shandong luruan Digital Technology Co.,Ltd. smart energy branch Address before: Room 902, 9 / F, block B, Yinhe building, 2008 Xinluo street, hi tech Zone, Jinan City, Shandong Province Patentee before: Shandong Luneng Software Technology Co.,Ltd. intelligent electrical branch |
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| CP01 | Change in the name or title of a patent holder |