CN101826049B - Implementation method for debugging information output in embedded system - Google Patents
Implementation method for debugging information output in embedded system Download PDFInfo
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Abstract
The invention relates to an implementation method for debugging information output in an embedded system, comprising the following steps: a screening tool screens an engineering source code to generate the corresponding relation of debugging positioning information and debugging information; when the embedded system operates the engineering source code and needs to output the real-time debugging information, output information with the debugging positioning information is transmitted to debugging control output equipment; the debugging control output equipment obtains the debugging positioning information and finds the debugging information according to the corresponding relation of the debugging positioning information and the debugging information; and the debugging control output equipment displays the debugging information. The implementation method for debugging information input in the embedded system greatly reduces the system expenditure of a debugging output module of the embedded system and saves bandwidth occupied by the debugging information data on a universal serial bus to bring convenience for the transmission of other data. The method has simple and convenient process, stable and reliable working performance and wide applicable range, thus bringing great convenience for debugging the embedded system.
Description
Technical field
The present invention relates to the embedded system field, particularly the embedded systems debugging technical field specifically is meant the implementation method that Debugging message is exported in a kind of embedded system.
Background technology
The debugging of embedded system (micro-system) is a ring very important in the Embedded System Design with test.Various information when efficiently obtaining operation for embedded system are bases of debugging and test, also are the places that should pay attention at the beginning of the system design.The method of good Debugging message output can effectively reduce Debugging message output module shared proportion on the resource consumption of whole micro-system, and gives other functional modules with bigger performance space.
The Debugging message (road sign) of so-called embedded system is meant in the embedded system source code through function call output print information.For example print the function name of this function, come the whole service process of surveillance with this in the porch of each function.
In the prior art; The method of conventional Debugging message output is: in the source code of embedded system, use printf or trace function call; Like print (" Hello world "); Lower floor accomplishes the encapsulation of this class function through the driver of UART (serial ports) or USB (USB), then uses hyper terminal or specific adviser tool to accept Debugging message at PC (personal computer) end, and the Debugging message of as above exporting in the example is shown as " Hello world " on instrument.
The major defect of conventional Debugging message output intent is:
(1) the Debugging message output module of micro-system operation to as if text to be shown; If the output information amount is very big; Debugging message output module itself will take a lot of system resource (like CPU time and memory headroom); This will affect to other the normal operation of functional module, and extreme case is other functional module cisco unity malfunction.
(2) data traffic of very big Debugging message can take the bigger bandwidth of universal serial bus, is unfavorable for the transmission of other data on this universal serial bus between micro-system and PC.
Above variety of problems; It has its source in and in the output procedure of Debugging message, the transmission data is not made processed compressed; So data volume is relatively large, efficient is very low, thereby brings certain obstacle for the debugging of embedded system; Also influence simultaneously the operational efficiency of embedded system, also brought very big inconvenience for people's work.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, work efficiency, the process that provides a kind of and can effectively reduce the resource overhead of debugging output information in embedded system, improves debug process is simple and convenient, stable and reliable working performance, the scope of application implementation method of Debugging message output in the embedded system comparatively widely.
In order to realize above-mentioned purpose, the implementation method of Debugging message output is following in the embedded system of the present invention:
The implementation method of Debugging message output in this embedded system is wherein used the scanning sequence and control output device that are associated with embedded system, and its principal feature is that described method may further comprise the steps:
(1) the scanning sequence engineering source code that will move embedded system carries out scan process, and produces the mapping table of debugging locating information and Debugging message;
(2) operation for embedded system this project source code;
(3) when embedded system need be exported real-time debug information, then the output information that will include debugging locating information and out of Memory of the debugging output module in the embedded system is sent to the debugging control output device;
(4) the debugging control output device obtains debugging locating information according to received output information, and finds corresponding Debugging message through the corresponding relation of debugging locating information and Debugging message;
(5) the debugging control output device shows the Debugging message that finds output or makes other relevant treatment.
Scanning in this embedded system in the implementation method of Debugging message output is carried out scan process to the engineering source code, may further comprise the steps:
(11) scanning sequence begins to travel through all engineering source code file;
Current engineering source code file when (12) opening traversal, and the function call form of employed debugging output in definite this project source code and the representation of Debugging message;
(13) in this project source code file, search and meet the debugging output function and call the feature string of form, and the Debugging message character string that meets the Debugging message representation behind this feature string is extracted;
(14) corresponding relation of this Debugging message character string with corresponding debugging locating information got up with the stored in form of table.
The debugging locating information in this embedded system in the implementation method of Debugging message output and the mapping table of Debugging message are the corresponding relation storage list between debugging locating information and the Debugging message character string.
Debugging locating information in this embedded system in the implementation method of Debugging message output comprises zhang part information and the residing hereof line number information of this Debugging message character string at Debugging message character string place.
Zhang part information in this embedded system in the implementation method of Debugging message output can be file name or reference number of a document.
The output information that debugging output module in this embedded system in the implementation method of Debugging message output will include debugging locating information and out of Memory is sent to the debugging control output device, may further comprise the steps:
(21) the debugging output module writes down the fileinfo and the residing hereof line number information of this real-time debug information character string at current real-time debug information character string place, and produces corresponding output information;
(22) the debugging output module is sent to described debugging control output device with this output information.
Output information in this embedded system in the implementation method of Debugging message output comprises command header field, attribute field, length field, fileinfo field and line number information field.
Debugging control output device in this embedded system in the implementation method of Debugging message output obtains debugging locating information and finds corresponding Debugging message according to output information, may further comprise the steps:
(31) the debugging control output device extracts fileinfo and line number information in the fileinfo field from output information and the line number information field respectively;
(32) the debugging control output device is to search corresponding Debugging message character string in the corresponding relation storage list of index between debugging locating information and Debugging message character string with fileinfo and the line number information that extracts;
The Debugging message character string of the correspondence that (33) will find is as a result of returned step (5).
Adopted the implementation method of Debugging message output in the embedded system of this invention, owing to, reduced the system overhead of embedded system greatly at the debugging output module wherein through embedded systems debugging information has been carried out certain Information Compression; Also saved simultaneously the shared bandwidth of debugging information data on the universal serial bus; For the transmission of other data provides convenience, thereby effectively reduce debugging output module resource overhead in embedded system, improved the work efficiency of debugging output module; Process is simple and convenient simultaneously; Stable and reliable working performance, the scope of application are comparatively extensive, bring great convenience for the debugging of embedded system.
Description of drawings
Fig. 1 is the frame structure synoptic diagram of output information in the implementation method that Debugging message is exported in the embedded system of the present invention.
Fig. 2 is the system construction drawing of the implementation method of Debugging message output in the embedded system of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, the special following examples of lifting specify.
At first the notion of obscuring easily in this instructions is made following explanation:
Scanning sequence: the application program based on PC, scanning engineering source code also generates a table.With " scanning tools " indifference.
Scanning engineering source code: embedded engineering source code is scanned with scanning sequence.
The debugging control output device: a application program based on PC, accept from the Debugging message of embedded system and handle accordingly.With " adviser tool " indifference.
The debugging output module: a module in the embedded system is used for Debugging message is collected, gathered and sends to the PC side.
The debugging locating information: in relation table the location Debugging message information, as filename, the row number.
Debugging message: the embedded system development person wants the information exported.
In this manual, the following mutual indifference of appellation: road sign and Debugging message, embedded system and micro-system, scanning sequence and scanning tools, debugging control output device and adviser tool, engineering source code and program source code.
See also Fig. 1 and shown in Figure 2, the implementation method of Debugging message output in this embedded system is wherein used scanning sequence and the debugging control output device that is associated with embedded system, comprising following steps:
(1) the scanning sequence engineering source code that will move embedded system carries out scan process, and produces the mapping table of debugging locating information and Debugging message, may further comprise the steps:
(a) scanning sequence begins to travel through all engineering source code file;
(b) open current engineering source code file in the traversal, and the function call form of employed debugging output in definite this project source code and the representation of Debugging message;
(c) in this project source code file, search and meet the debugging output function and call the feature string of form, and the Debugging message character string that meets the Debugging message representation behind this feature string is extracted;
(d) corresponding relation of this Debugging message character string with corresponding debugging locating information got up with the stored in form of table; The existing way of the debugging locating information wherein and the mapping table of Debugging message is the corresponding relation storage list between debugging locating information and the Debugging message character string; Described debugging locating information comprises the fileinfo and the residing hereof line number information of this Debugging message character string at Debugging message character string place; Described fileinfo can be file name or zhang part numbering;
(2) operation for embedded system this project source code;
(3) when embedded system need be exported real-time debug information, then the output information that will include debugging locating information and out of Memory of the debugging output module in the embedded system is sent to the debugging control output device, may further comprise the steps:
(a) the debugging output module writes down the fileinfo and the residing hereof line number information of this real-time debug information character string at current real-time debug information character string place, and produces corresponding output information; This output information comprises command header field, attribute field, length field, fileinfo field, line number information field and other information fields;
(b) the debugging output module is sent to described debugging control output device with this output information;
(4) the debugging control output device obtains debugging locating information according to received output information, and finds corresponding Debugging message through the corresponding relation of debugging locating information and Debugging message, may further comprise the steps:
(a) the debugging control output device extracts fileinfo and line number information in the fileinfo field from output information and the line number information field respectively;
(b) the debugging control output device is to search corresponding Debugging message character string in the corresponding relation storage list of index between debugging locating information and Debugging message character string with fileinfo and the line number information that extracts;
The Debugging message character string of the correspondence that (c) will find is as a result of returned;
(5) the debugging control output device shows the Debugging message that finds output or does other processing.
In the middle of reality was used, basic thought of the present invention was following:
With a scanning tools character strings to be exported all in the source code is extracted; The information of the character string that extracts and this character string of location is stored away by certain form of form generation; During operation for embedded system; Pass to the locating information of certain character string of PC through the Debugging message output module, the instrument of PC side is to inquire character string in the form preserved in front of index and show with the character string locating information that receives.
This method mainly comprises following a few step in the practical implementation process:
The design of step 1---scanning tools and realization.
The key points in design of scanning tools is, the function call form of the debugging output of confirming to use in the micro-system source code is " printf " like what use, still " trace "; Confirm the representation of character string in the micro-system source code, as using in the C language " " come the tab character string;
To text scanning tools of top definite 2 designs, this instrument is searched feature string in zhang presents, and extracts the character string that specific markers goes out behind this feature string, and this character string and its locating information are got up by the stored in form of showing.The location of character string can be expressed in this way: zhang part name at character string place, which row that character string is in file.
The design of step 2---adviser tool and realization.
The adviser tool design key points is to confirm the communications protocol format of embedded system and adviser tool; Confirm effective display mode (as on windows platform, selected window shows that still control desk shows); 2 points of confirming according to the front get the locating information of character string from the micro-system side-draw, with the locating information are to search out character string in the list file that from step 3, generates of index and show.
Scanning before step 3---the operation for embedded system
Before the micro-system operation, please use all engineering source codes of tool scans that design in the step 1, generate a list file of forming by character string locating information and character string.
Step 4---operation embedded system, the beginning system debug.Note whether having carried out step 3 after source code is changed simultaneously, so that list file upgrades.
Provide a practical implementation process of in large-scale embedded systems debugging output procedure, using method of the present invention below.
The output function form of debugging output module is TRACE_FUNCTION; Design language is the C language; Scanning tools is called TraceScan.exe; The list file that scanning generates StringTable.bin by name preserves with binary mode; The universal serial bus that the debugging output module is communicated by letter with PC is USB; The method of character string location is: all .c source files of embedded system are numbered (this numbering is document number) by the mode that increases progressively; Each file has a unique document number; The output string of treating in this document has a unique row number again in this document, can orient certain character string with these two numbers; Adviser tool is called TraceMonitor.exe, and the communications protocol format that itself and micro-system are debugged output module is the head that a byte representes an output information, and the length of a byte representation back of heel output information sees also shown in Figure 1.
(1) realization of step 1---TraceScan.exe, detailed process is following:
System call FindFirstFile, the FindNextFile that Windows operating system provides is used and can travels through .c files all under certain catalogue, comprises the .c file in the sub-directory of nested multilayer; Open certain .c file, check whether character string TRACE_FILE_NUM is defined, if not definition then defines and give a specific value; Search hereof whether character string TRACE_FUNCTIO is arranged; Whether if having, then checking thereafter has " ", extract if having then " " between character string, and document number and row number noted, be deposited in the form with a specific form, continue the scanning of next file.
(2) realization of step 2---TraceMonitor.exe, detailed process is following:
To take off and analyze head from the data that usb bus obtains, judge whether it is effective trace head; Judge the number of the valid data of back according to length: the row of the document number of two byte, two byte number, remaining per four byte of data represent a parameter; With document number and row number is that index is found out character string and is presented in the window in StringTable.bin.
(3) step 3---scan embedded engineering source code with TraceScan.exe, generate StringTable.bin.
(4) step 4---debugging embedded system, the real-time output of surveillance.
Adopted the implementation method of Debugging message output in the above-mentioned embedded system, owing to, reduced the system overhead of embedded system greatly at the debugging output module wherein through embedded systems debugging information has been carried out certain Information Compression; Also saved simultaneously the shared bandwidth of debugging information data on the universal serial bus; For the transmission of other data provides convenience, thereby effectively reduce debugging output module resource overhead in embedded system, improved the work efficiency of debugging output module; Process is simple and convenient simultaneously; Stable and reliable working performance, the scope of application are comparatively extensive, bring great convenience for the debugging of embedded system.
In this instructions, the present invention is described with reference to its specific instance.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. the implementation method of Debugging message output in the embedded system is wherein used scanning sequence and the debugging control output device that is associated with embedded system, it is characterized in that described method may further comprise the steps:
(1) the scanning sequence engineering source code that will move embedded system carries out scan process, and produces the mapping table of debugging locating information and Debugging message;
(2) operation for embedded system this project source code;
(3) when embedded system need be exported real-time debug information, then the output information that will include debugging locating information and out of Memory of the debugging output module in the embedded system is sent to the debugging control output device;
(4) the debugging control output device obtains debugging locating information according to received output information, and finds corresponding Debugging message through the mapping table of debugging locating information and Debugging message;
(5) the debugging control output device shows the Debugging message that finds output or does other processing.
2. the implementation method of Debugging message output in the embedded system according to claim 1 is characterized in that described scanning sequence carries out scan process to the engineering source code, may further comprise the steps:
(11) scanning sequence begins to travel through all engineering source code file;
Current engineering source code file when (12) opening traversal, and confirm the function call form of employed debugging output in this current engineering source code file and the representation of Debugging message;
(13) in this current engineering source code file, search and meet the debugging output function and call the feature string of form, and the Debugging message character string that meets the Debugging message representation after this feature string is extracted;
(14) corresponding relation of this Debugging message character string with corresponding debugging locating information got up with the stored in form of table.
3. the implementation method of Debugging message output is characterized in that in the embedded system according to claim 2, and the mapping table of described debugging locating information and Debugging message is the corresponding relation storage list between debugging locating information and the Debugging message character string.
4. the implementation method of Debugging message output is characterized in that in the embedded system according to claim 3, and described debugging locating information comprises the fileinfo and the residing hereof line number information of this Debugging message character string at Debugging message character string place.
5. the implementation method of Debugging message output is characterized in that described fileinfo is file name or reference number of a document in the embedded system according to claim 4.
6. the implementation method of Debugging message output in the embedded system according to claim 4; It is characterized in that; The output information that described debugging output module will include debugging locating information and out of Memory is sent to the debugging control output device, may further comprise the steps:
(21) the debugging output module writes down the fileinfo and the residing hereof line number information of this real-time debug information character string at current real-time debug information character string place, and produces corresponding output information;
(22) the debugging output module is sent to described debugging control output device with this output information.
7. the implementation method of Debugging message output is characterized in that described output information comprises command header field, attribute field, length field, fileinfo field and line number information field in the embedded system according to claim 6.
8. the implementation method of Debugging message output in the embedded system according to claim 7 is characterized in that described debugging control output device obtains debugging locating information and finds corresponding Debugging message according to output information, may further comprise the steps:
(31) the debugging control output device extracts fileinfo and line number information in the fileinfo field from output information and the line number information field respectively;
(32) the debugging control output device is to search corresponding Debugging message character string in the corresponding relation storage list of index between debugging locating information and Debugging message character string with fileinfo and the line number information that extracts;
The Debugging message character string of the correspondence that (33) will find is as a result of returned step (5).
9. according to the implementation method of Debugging message output in each described embedded system in the claim 1 to 8, it is characterized in that, be connected through universal serial bus between the debugging output module in the described embedded system and the debugging control output device.
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| CN102968286B (en) * | 2011-09-01 | 2018-01-16 | 锐迪科（重庆）微电子科技有限公司 | A kind of data transfer tracking, device and system |
| CN102419724B (en) * | 2011-10-28 | 2014-09-24 | 烽火通信科技股份有限公司 | Method for improving chip verification input/output (IO) efficiency |
| CN102421004B (en) * | 2011-11-01 | 2014-09-03 | 深圳创维－Rgb电子有限公司 | Debugging method and device for television software system |
| CN103777930B (en) * | 2012-10-19 | 2017-12-15 | 阿里巴巴集团控股有限公司 | Output intent, acquisition methods, monitoring method and its device of program internal information |
| KR20180047196A (en) | 2016-10-31 | 2018-05-10 | 삼성전자주식회사 | Electronic device and method for tracing the history of debugging |
| CN108446217A (en) * | 2018-02-09 | 2018-08-24 | 福建升腾资讯有限公司 | A kind of method and computer equipment controlling Debugging message output by sub-module |
| CN110299180B (en) * | 2019-07-08 | 2021-06-08 | 深圳忆联信息系统有限公司 | Debugging information output method and device based on solid state disk and computer equipment |
| CN114116439A (en) * | 2020-09-01 | 2022-03-01 | 深圳市汇顶科技股份有限公司 | Debugging information output method and device, software debugging equipment and storage medium |
| CN114063943A (en) * | 2021-11-18 | 2022-02-18 | 芯翼信息科技(上海)有限公司 | Data transmission system, method, device, medium, and apparatus |
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