CN1752946A - Debugging method of embedded system and its system - Google Patents
Debugging method of embedded system and its system Download PDFInfo
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Abstract
The present invention discloses a debugging method of embedded system. Said method can be used in the system formed from embedded system and external debugging terminal connected with it by means of communication interface. Said method includes the following steps: firstly, adding debugging module in debugged program, downloading the debugged program into embedded system and setting debugging module inlet; then operating debugged program, when the debugged program is operated to the debugging module inlet, the debugging module can temporarilly stop operation of said program, saving current program operation environment and notifying it to debugging terminal; the debugging terminal can fetch the data of debugged program operation environment from embedded system, analyze and judge that the program has problem or not, if said program has no need of continuous operation, it can be completed, otherwise, giving instruction for continuous operation to debugging module, the debugging module can be used for controlling debugged program and making it continuously operate, using identical mode to make processing in next debugging module inlet until said program execution is completed or the debugging is interrupted by user.
Description
Technical field
The present invention relates to embedded system, relate in particular to the adjustment method and the system thereof of embedded system.
Background technology
The flow process of embedded software developing is artificial debugging in PC at first normally, and debugging downloads to program in the chip after finishing, and does further hardware testing again.Owing to be not operation debugging in final hardware environment, be that simulated environment and true environment there are differences, therefore a problem that often runs into is to have found the new problem that do not run in simulated environment when hardware testing, causes operation for embedded system undesired.
The assistant adjustment instrument of some hardware is arranged on the market, and these instruments not only cost an arm and a leg, and are still the simulation to hardware, are not hardware environment truly.In addition, when on off-gauge hardware platform, carrying out the debugging of embedded system, there is not suitable simulation hardware platform to use for debugging yet.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of adjustment method of embedded system, can move debugging in final hardware environment, and the discovery system moves abnormal true cause.The present invention also will provide a kind of debug system that realizes this method.
In order to solve the problems of the technologies described above, the invention provides a kind of adjustment method of embedded system, be applied to by embedded system and the system that forms by the coupled external debug terminal of communication interface, this method may further comprise the steps:
(a) in debugged program, increase debugging module, download to debugged program in the embedded system and debugging module inlet is set;
(b) the debugged program of operation in embedded system, when this program run entered the mouth to debugging module, described debugging module suspended the operation of this program, preserves present procedure running environment, and notifies described debug terminal, waits for the instruction of this debug terminal;
(c) described debug terminal reads the data of debugged program run environment from embedded system, and whether analysis and determining program have problems, and as not needing to continue operation, then interrupts debugging, end; Continue debugging as needs, send out the instruction that continues operation, carry out next step to described debugging module;
(d) described debugging module is controlled debugged program and is continued operation, returns execution in step (b), and complete or user is interrupted debugging up to this program.
Further, above-mentioned adjustment method also can have following characteristics: described step (a) is by dose breakpoint in debugged program, the setting of finishing in the breakpoint tabulation that needs the breakpoint that suspends and be kept at described debugging module described debugging module inlet is set, in the described step (b), when breakpoint is arrived in described debugged program run, described debugging module arrives first in the described breakpoint tabulation and searches this breakpoint, just it is suspended the operation of debugged program when finding as the debugging module inlet.
Further, above-mentioned adjustment method also can have following characteristics: in the described step (c), when not needing update routine running environment and needing to continue debugging, the described debug terminal directly debugging module in embedded system sends the instruction that continues operation, described debugging module recovers original running environment of preserving, and continues to carry out debugged program; And when needing update routine running environment and needing to continue debugging, the described debug terminal debugging module in embedded system earlier sends the instruction of revising running environment, by described debugging module the running environment of preserving is made amendment, described then debug terminal sends the instruction that continues operation to described debugging module again, described debugging module recovers amended running environment, continues to carry out debugged program.
Further, above-mentioned adjustment method also can have following characteristics: in the described step (c), the related data that described debug terminal reads from embedded system comprises the data of program pointer, register, storehouse, internal memory, external memory, data field or program area.
Further, above-mentioned adjustment method also can have following characteristics: described embedded system is a subscriber identification module, between described debug terminal and described embedded system by APDU instruction communication.
The debug system of a kind of embedded system provided by the invention comprises embedded system, it is characterized in that, also is included in the debug terminal of this embedded system outside, wherein:
Comprise a debugging module that is arranged on debugged program inside in the described embedded system, this module is used to receive the steering order of described debug terminal, controls the operation of debugged program and returns the program run information that debug terminal needs;
Described debug terminal links to each other with described embedded system by communication interface, is used for sending steering order to debugged program to the debugging module of described embedded system, obtains the operation information of debugged program simultaneously and shows.
Further, above-mentioned debug system also can have following characteristics: described debug terminal further comprises communication unit, protocol analysis unit and indicative control unit, wherein:
Described communication unit is used to realize the mutual communication between described debug terminal and the embedded system, and the data that embedded system is sent are transferred to the protocol analysis unit of this terminal, and perhaps the data that this protocol analysis unit is sent send to embedded system;
Described protocol analysis unit is used for the data that this terminal called unit is sent are analyzed, the program run information that parses wherein outputs to indicative control unit, and the data set that indicative control unit is sent is made into the form of protocol requirement between debug terminal and embedded system, output to the communication unit of this debug terminal;
The man-machine interface that provides the commissioning staff to operate is provided described indicative control unit, the operation information that shows the program that this terminal protocol analytic unit is sent, generate steering order simultaneously, protocol analysis unit and communication unit by this terminal send to described embedded system.
Further, above-mentioned debug system also can have following characteristics: described debugging module further comprises communication unit, protocol analysis unit and flow process control module, wherein:
Described communication unit is used for by the interface realization of embedded system and the mutual communication between the described debug terminal, this module protocol analytic unit that the data that described debug terminal is sent are transferred to, and the data that this module protocol analytic unit is sent are sent to described debug terminal;
Described protocol analysis unit is used for the data that this module communication unit receives are analyzed, the control information that parses wherein outputs to described flow process control module, and the form that the data set that described flow process control module returns is made into agreement between described embedded system and described debug terminal is outputed to this module communication unit;
Described flow process control module is used for controlling according to the steering order that debug terminal is sent the operation of debugged program, and the program run information that described debug terminal is needed turns back to this module protocol analytic unit, sends to described debug terminal by this module communication unit again.
Further, above-mentioned debug system also can have following characteristics: comprise the setting of the breakpoint tabulation that needs are suspended in the steering order that described indicative control unit generates; Described debugging module also comprises breakpoint list storage unit, after described flow process control module is received the instruction that the breakpoint that needs time-out is set, this breakpoint is increased in the breakpoint tabulation of this breakpoint list storage unit.
Further, above-mentioned debug system also can have following characteristics: described embedded system is a subscriber identification module, and the communication interface of described debug terminal is a card reader.
As from the foregoing, the invention provides a kind of adjustment method based on real hardware environment, the method realizes simple, can move debugging in final hardware environment, the true cause that can pinpoint the problems and produce.Be specially adapted to the debugging of the embedded system on off-gauge hardware platform, and use under simulated environment and the inconsistent situation of true environment.
Description of drawings
Fig. 1 is the block scheme of first embodiment of the invention debug system.
Fig. 2 is the process flow diagram of first embodiment of the invention adjustment method.
Embodiment
As shown in Figure 1, the debug system of present embodiment comprises embedded system and its outside debug terminal.In the present embodiment, embedded system is a chip, and debugged program is installed in wherein, can be the operating system software program, also can be user's Application Software Program.
Debugged program downloads to before the chip, need increase debugging module in that debugged program is inner, and is provided with at needs on the position of breakpoint and increases breakpoint in advance and indicate the breakpoint sequence number.
Debug terminal is undertaken alternately by the debugging module in the debugged program in IO interface and the chip, to the steering order of chip transmission, obtain the operation information (as running environment, state etc.) and the demonstration of program according to user's needs simultaneously from chip to debugged program.This terminal further comprises communication unit, protocol analysis unit and indicative control unit.Wherein:
Communication unit is used to realize the mutual communication between debug terminal and the embedded system chip, and the data that chip is sent are transferred to the protocol analysis unit of this terminal, and perhaps the data that this protocol analysis unit is sent send to chip.This communication unit is made up of IO interface that is connected with chip and control corresponding unit.
Protocol analysis unit is used for the data that this terminal called unit is sent are analyzed, parse program run information wherein and output to indicative control unit, and the data set that indicative control unit is sent is made into the form that debug terminal and interchip protocol require, output to the communication unit of this debug terminal.
The man-machine interface that provides the commissioning staff to operate is provided indicative control unit, the operation information that shows the program that this terminal protocol analytic unit is sent, generate steering order simultaneously, as continue working procedure, the breakpoint tabulation that need to suspend is set, reads or the value of write-in program pointer, register, storehouse, internal memory, external memory etc., protocol analysis unit and the communication unit by this terminal sends to described chip then.
The only just operation of time out program of the breakpoint place in this tabulation, other breakpoint is not time out program operation in fact, promptly has only the breakpoint in the breakpoint tabulation just to enter the mouth as debugging module.
Debugging module is arranged on debugged program inside in the chip, is used to receive the steering order of debug terminal to debugged program, and the operation of control program is also returned the program run information that debug terminal needs.This module further comprises communication unit, protocol analysis unit, flow process control module and breakpoint list storage unit, wherein:
Communication unit be used for that interface by chip is realized and debug terminal between mutual communication, this module protocol analytic unit that the data that debug terminal is sent are transferred to, and the data that this module protocol analytic unit is sent are sent to described debug terminal.
Protocol analysis unit is used for the data that this module communication unit receives are analyzed, the control information that parses wherein outputs to the flow process control module, and the data set that the flow process control module returns is made into the form of agreement between chip and debug terminal, output to this module communication unit.
The flow process control module is used for the steering order according to debug terminal, finish corresponding operating, as the breakpoint that will need to suspend be increased in the breakpoint list storage unit, judge current breakpoint whether in the breakpoint tabulation, temporary transient interrupt routine operation, continue program run etc., and the program run information that described debug terminal needs turned back to the protocol analysis unit of this module, send to debug terminal by this module communication unit again.
Breakpoint list storage unit is used to preserve the tabulation of the breakpoint that needs suspend.
Based on above system, the flow process that present embodiment is debugged built-in system software may further comprise the steps as shown in Figure 2:
Being application example with the debug system based on SIM card below, also is similar to the debugging of the smart card of the band CUP that meets the ISO7816 standard.The present invention is further illustrated.
In this application example, be that the program that will operate in the SIM card is debugged, at first debugged program is made amendment, add a debugging module as indicated above, after downloading to SIM card, the external debug terminal as PC, utilizes existing card reader to be undertaken alternately by the debugging module in the debugged program in APDU instruction and the card.
The debugging step of this example is as follows:
The first step: at first in debugged program, increase debugging module, and breakpoint is set, then this program is downloaded in the chip in the position of needs;
Can with grand SETBP+ breakpoint sequence number breakpoint be set in program, for example SETBP 1 is illustrated in and is provided with breakpoint herein, and sequence number is 1.SETBP mainly is operating as: judge whether this sequence number is arranged in the breakpoint tabulation, if then carry out the time out program flow process, otherwise walk normal flow.
Second step: the external debug terminal is by the tabulation of the APDU instruction A0 E0 00 00 X BP1BP2...BPX breakpoints that setting program need suspend in debugging module, is used for that SETBP is grand need to be judged whether to suspend when carrying out;
The 3rd step: move debugged program,, activate the debugging module in this program when program run during to certain breakpoint, this breakpoint of the grand judgement of SETBP is in breakpoint tabulation the time, program halt can be preserved the environment of present procedure operation, and give the external debug terminal the control of program;
In the 4th step, the external debug terminal can be carried out read/write memory, external memory, register variable or the like operation to chip by APDU instruction, thus the environment of routine analyzer operation and find the reason that goes wrong.The form of the APDU instruction of supporting in the agreement is as shown in the table:
| INS | P1 | P2 | P3 | Follow-up data | Function |
| E0 | 00 | 00 | Len | The breakpoint tabulation | The breakpoint tabulation is set |
| E0 | 00 | 01 | 00 | Do not have | The continuation program is carried out |
| E0 | 01 | 00 | Len | Receive rreturn value | Read register value |
| E0 | 02 | Register serial number | 1 | Register value | Revise register value |
| E2 | 00 | Play the location | Len | Receive rreturn value | Read memory value |
| E2 | 01 | Play the location | Len | Internal memory to be written | The write memory value |
| E4 | High-order | Low level | Len | Receive rreturn value | Read outer deposit data |
| E6 | High-order | Low level | Len | Outer deposit data | Write outer deposit data |
| E8 | High-order | Low level | Len | Receive rreturn value | Read code data |
In the 5th step, no problem when need continuing working procedure, the external debug terminal is sent corresponding APDU instruction A0 E0 00 01 00, and debugging module receives that the running environment that this instruction back recovers to preserve continues to move debugged program; Perhaps, pinpoint the problems when needing to revise running environment and continuing operation, the external debug terminal is sent command adapted thereto earlier, write the running environment parameter that needs modification by debugging module, debug terminal sends the continuation operating instruction more then, debugging module recovers amended running environment, continues the debugged program of operation then;
Also may interrupt debugging this step user, the problem that exists is analyzed.
In the 6th step, program run is handled by same way as during to next breakpoint, up to EOP (end of program) or interrupt debug process.
In the Another Application example, debug terminal (as PC) also can be connected with the control chip of circuit board by serial port, and the program in the control chip is debugged.In this example, the communication module hardware of debug terminal comprises serial line interface, and software comprises the driver of serial line interface.The communication unit serial port of debugging module and serial port converter are as hardware, and software comprises the program that chip internal is operated input/output end port.
In sum, the invention provides a kind of adjustment method, by operation debugging in final hardware environment, the true cause that can pinpoint the problems and produce based on real hardware environment.Be specially adapted to the debugging of the embedded system on off-gauge hardware platform.
Claims (10)
1, a kind of adjustment method of embedded system is applied to by embedded system and the system that forms by the coupled external debug terminal of communication interface, and this method may further comprise the steps:
(a) in debugged program, increase debugging module, download to debugged program in the embedded system and debugging module inlet is set;
(b) the debugged program of operation in embedded system, when this program run entered the mouth to debugging module, described debugging module suspended the operation of this program, preserves present procedure running environment, and notifies described debug terminal, waits for the instruction of this debug terminal;
(c) described debug terminal reads the data of debugged program run environment from embedded system, and whether analysis and determining program have problems, and as not needing to continue operation, then interrupts debugging, end; Continue debugging as needs, send out the instruction that continues operation, carry out next step to described debugging module;
(d) described debugging module is controlled debugged program and is continued operation, returns execution in step (b), and complete or user is interrupted debugging up to this program.
2, adjustment method as claimed in claim 1, it is characterized in that, described step (a) is by dose breakpoint in debugged program, the setting of finishing in the breakpoint tabulation that needs the breakpoint that suspends and be kept at described debugging module described debugging module inlet is set, in the described step (b), when breakpoint was arrived in described debugged program run, described debugging module arrived first in the described breakpoint tabulation and searches this breakpoint, just it was suspended the operation of debugged program when finding as the debugging module inlet.
3, adjustment method as claimed in claim 1, it is characterized in that, in the described step (c), when not needing update routine running environment and needing to continue debugging, the described debug terminal directly debugging module in embedded system sends the instruction that continues operation, described debugging module recovers original running environment of preserving, and continues to carry out debugged program; And when needing update routine running environment and needing to continue debugging, the described debug terminal debugging module in embedded system earlier sends the instruction of revising running environment, by described debugging module the running environment of preserving is made amendment, described then debug terminal sends the instruction that continues operation to described debugging module again, described debugging module recovers amended running environment, continues to carry out debugged program.
4, adjustment method as claimed in claim 1 is characterized in that, in the described step (c), the related data that described debug terminal reads from embedded system comprises the data of program pointer, register, storehouse, internal memory, external memory, data field or program area.
5, adjustment method as claimed in claim 1 is characterized in that, described embedded system is a subscriber identification module, between described debug terminal and described embedded system by APDU instruction communication.
6, a kind of debug system of embedded system comprises embedded system, it is characterized in that, also is included in the debug terminal of this embedded system outside, wherein:
Comprise a debugging module that is arranged on debugged program inside in the described embedded system, this module is used to receive the steering order of described debug terminal, controls the operation of debugged program and returns the program run information that debug terminal needs;
Described debug terminal links to each other with described embedded system by communication interface, is used for sending steering order to debugged program to the debugging module of described embedded system, obtains the operation information of debugged program simultaneously and shows.
7, debug system as claimed in claim 6 is characterized in that, described debug terminal further comprises communication unit, protocol analysis unit and indicative control unit, wherein:
Described communication unit is used to realize the mutual communication between described debug terminal and the embedded system, and the data that embedded system is sent are transferred to the protocol analysis unit of this terminal, and perhaps the data that this protocol analysis unit is sent send to embedded system;
Described protocol analysis unit is used for the data that this terminal called unit is sent are analyzed, the program run information that parses wherein outputs to indicative control unit, and the data set that indicative control unit is sent is made into the form of protocol requirement between terminal and embedded system, output to the communication unit of this terminal;
The man-machine interface that provides the commissioning staff to operate is provided described indicative control unit, the operation information that shows the program that this terminal protocol analytic unit is sent, generate steering order simultaneously, protocol analysis unit and communication unit by this terminal send to described embedded system.
As claim 6 or 7 described debug systems, it is characterized in that 8, described debugging module further comprises communication unit, protocol analysis unit and flow process control module, wherein:
Described communication unit is used for by the interface realization of embedded system and the mutual communication between the described debug terminal, this module protocol analytic unit that the data that described debug terminal is sent are transferred to, and the data that this module protocol analytic unit is sent are sent to described debug terminal;
Described protocol analysis unit is used for the data that this module communication unit receives are analyzed, the control information that parses wherein outputs to described flow process control module, and the form that the data set that described flow process control module returns is made into agreement between described embedded system and described debug terminal is outputed to this module communication unit;
Described flow process control module is used for controlling according to the steering order that debug terminal is sent the operation of debugged program, and the program run information that described debug terminal is needed turns back to this module protocol analytic unit, sends to described debug terminal by this module communication unit again.
9, debug system as claimed in claim 8 is characterized in that, comprises the setting of the breakpoint tabulation that needs are suspended in the steering order that described indicative control unit generates; After described debugging mould comprises also that certainly the instruction that the breakpoint that needs time-out is set is received in breakpoint list storage unit, described flow process control module, this breakpoint is increased in the breakpoint tabulation of this breakpoint list storage unit.
10, debug system as claimed in claim 6 is characterized in that, described embedded system is a subscriber identification module, and the communication interface of described debug terminal is a card reader.
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| CN108303961A (en) * | 2018-02-05 | 2018-07-20 | 艾凯克斯（嘉兴）信息科技有限公司 | A kind of debugging assembly method based on automatic assembling |
| CN109933480A (en) * | 2019-03-15 | 2019-06-25 | 捷德（中国）信息科技有限公司 | A kind of blind tune method of COS embedded development, system, equipment and storage medium |
| CN109933480B (en) * | 2019-03-15 | 2023-04-21 | 捷德(中国)科技有限公司 | COS embedded development blind tone method, system, equipment and storage medium |
| CN114238098A (en) * | 2021-12-09 | 2022-03-25 | 上海创景信息科技有限公司 | Embedded software stack use condition dynamic analysis method and system based on data breakpoint |
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