CN104915206B - A kind of management method of attribute and data on DSP based on text resolution - Google Patents
A kind of management method of attribute and data on DSP based on text resolution Download PDFInfo
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Abstract
The attribute and data that needs extend are put into file, these attributes and data are managed with the mode of configuration file by the management method of attribute and data on a kind of DSP based on text resolution disclosed by the invention.When dsp operation, attribute type as needed goes inquiry file, dynamic acquisition types value and data.According to the communication protocol of setting, new attribute and data, the corresponding attribute of more new configuration file and data are received.The management method of attribute and data on DSP based on text resolution of the invention, by introducing file system in C2000 series DSP system, the dynamic expansion and configuration for system operation attribute are realized in a manner of configuration file, it is attributively added especially for the same type for the attribute planned in system, realize a large amount of attributes with data update with it is synchronous, with text resolution technology realize to configuration file efficient storage and parsing.Management method is simple and fast, avoids the lesser limitation of DSP memory of C2000 series.
Description
Technical field
Attribute the present invention relates to digital signal processor techniques field, on specifically a kind of DSP based on text resolution
With the management method of data.
Background technique
DSP (digital signal processor, digital signal processor) is a kind of at various digital signals
Adjustment method and design, the microprocessor with special construction, it is not only programmable, but also its real time execution speed can
Up to every number of seconds with ten million complicated order program, considerably beyond general purpose microprocessor, at motion control, sound processing, image
The fields such as reason, digital communication, Medical Devices, sonar radar are widely used.
In recent years, it is increasingly enhanced using the embedded system function that DSP is constructed as core, more and more applications need
System can rapidly configure different operation attributes according to different environment and requirement or update operation data, to realize system
It is operably more stable, more efficient, easy to maintain.This requires systems to run dynamic setting and the dynamic extending of attribute and data,
And have power down non-volatile.
Major way synchronous with data for the operation attribute configuration of the system of C2000 series DSP at present are as follows: soft in system
When part designs, according to existing demand, specific object and data are defined in a program, is belonged to when system operates normally according to specific
Property operation, when necessary, modified by series of instructions to specific object or data, also need handle in some cases
Attribute or data are stored in particular memory space (the outer Flash of Flash, piece and SD card in such as piece).Exist in this way and asks as follows
Topic: first is that attribute cannot be added easily, inconvenience extension must many times modify code and just be able to achieve.Second is that for needing
When the data and more property parameters of update, it cannot handle well.It three, cannot for the data being stored in memory space
Manage well, error-prone when operation, increase to data, delete, updating, read it is all very inconvenient.
In present software development, the mode of file is mostly used effectively to manage the progress of attribute and data, used
Realize that dynamic expansion is synchronous with data to text resolution technique to high-efficiency.But for built-in field, especially C2000 series
DSP, since its memory is smaller (tens KB), memory space is smaller (several hundred KB), is not appropriate for complex operations system and larger
File system, there is presently no realize this technology.
Summary of the invention
The problem to be solved in the present invention is to provide the managers of attribute and data on a kind of DSP based on text resolution
Method, this method can realize the dynamic expansion and configuration of attribute in the dsp system of C2000 series, and a large amount of attribute datas update
With synchronous and data file effectively management and efficient parsing and use.
The management method of attribute and data on a kind of DSP based on text resolution disclosed by the invention, be in order to
In the dsp system of C2000 series, the dynamic expansion and configuration of attribute are realized, a large amount of attribute datas update and synchronous and data
Effectively management and efficient parsing and the use of file ground, provides the following technical solution: the attribute and data that needs extend is put
Enter file, these attributes and data are managed with the mode of configuration file.When dsp operation, attribute type as needed is gone
Inquire file, dynamic acquisition types value and data.When attribute and data need to change, according to the communication protocol of setting, receive
New attribute and data, the corresponding attribute of more new configuration file and data.If the attribute and data of addition or modification are relatively more,
Configuration file can directly be replaced.
Specific step is as follows:
1) file system is transplanted；Because being the management and storage for realizing attribute and data by way of file, need
Want a file system.Because its memory of the DSP of C2000 series is smaller (only tens KB), memory space is smaller (only several hundred
KB), this requires the file system of selection will be small as far as possible and stablizes.
2) text resolution library is transplanted；It is efficiently parsed to be realized to file, needs the support in mature text resolution library,
Coding and the parsing to attribute and data are realized by text resolution library.Because its memory of the DSP of C2000 series is smaller (only several
Ten KB), memory space is smaller (only several hundred KB), this requires the text resolution library of selection small and stablize, reduces to the greatest extent to memory
Occupancy.
3) it constructs software frame: writing configuration file, include the attribute for needing dynamic expansion in configuration file；Design is reasonable
Software architecture, dynamic read file in attribute and data, guarantee the normal operation of software.
4) when needing to obtain attribute, the data of corresponding attribute or attribute type in file are read；Need Update attribute
When with data, according to the communication protocol of setting, receive new attribute and data, the corresponding attribute of more new configuration file and data or
Directly replace configuration file.
As a further improvement of the above technical scheme, file system is transplanted in the step 1) is to transplant FatFs
To TMS320F28335 platform, comprising the following steps:
11) FatFs code is added in CCS engineering, according to data used in TMS320F28335 platform modifying file
The minimum data width of type, the DSP of C2000 series is 16Bits, and char 16Bits, int 16Bits, long int are
32Bits, double 64Bits；
12) complete diskio.c file in disk_initialize (), disk_status (), disk_read (),
Bottom layer realization in disk_write (), disk_ioctl () interface function；
13) header file path in FatFs file is added in the Include config option of engineering, is compiled in FatFs file
Header file after insertion is formatted as the memory space of Fat32 format, carries out file read-write test.
As an alternative to the above-described technical solution, in the step 2 transplant text resolution library be transplanting XML or
Person JSON transplants JSON to TMS320F28335 platform step are as follows:
21) two files of the cJSON.c and cJSON.h of cJSON code are added in CCS engineering, according to
TMS320F28335 platform identity modifies data type used in file, and the minimum data width of the DSP of C2000 series is
16Bits, char 16Bits, int 16Bits, long int are 32Bits, double 64Bits；
22) realization for modifying malloc () in cJSON.c, makes it be adapted to 28335 platforms；The big of heap is set as needed
It is small；
23) cJSON.h header file path is added in the Include config option of engineering, compiles cJSON.h header file；
It is tested using the test.c in the library CJSON.
As an alternative to the above-described technical solution, first writing file storage before carrying out the step 1)
Driving.
The management method of attribute and data on DSP based on text resolution of the invention, by C2000 series DSP
File system is introduced in system, dynamic expansion and configuration for system operation attribute is realized in a manner of configuration file, especially
It is that the same type for the attribute planned in system is attributively added, and is updated with realizing a large amount of attributes and data and together
Step, with text resolution technology realize to configuration file efficient storage and parsing.Management method is simple and fast, avoids
The lesser limitation of DSP memory of C2000 series, is applicable to the DSP and MCU of most of low and middle-end of built-in field.
Detailed description of the invention
Fig. 1 is the structural block diagram of management method of the invention；
Fig. 2 is the implementation flow chart of management method of the invention；
Fig. 3 is the flow chart of dynamic acquisition attribute and data in management method of the invention.
Specific embodiment
With reference to the accompanying drawing, to the management of attribute and data on a kind of DSP based on text resolution proposed by the present invention
Method.
As shown in Figure 1, the DSP1 of C2000 series, as platform, hardware drive program 2 has read-write external memory space 6
Ability.Application program 5 is run, the file 7 of memory space 6 is read by the ability of file system 3, passes through text resolution library 4
Content of text is parsed, attribute and data are obtained.Platform receives the communication instruction of Update attribute and data, passes through after receiving data
Text resolution mode group organization data is write into file, and mass data more news is encountered, and can also pass through direct alternate file
Mode updates.
As shown in Figures 2 and 3, the manager of the attribute on a kind of DSP based on text resolution disclosed by the invention and data
Method, is dynamic expansion and configuration in order in the dsp system of C2000 series, realize attribute, and a large amount of attribute datas update and same
Effectively management and efficient parsing and the use of step and data file ground, provides the following technical solution: the category that needs are extended
Property and data are put into file, these attributes and data are managed with the mode of configuration file.When dsp operation, as needed
Attribute type goes inquiry file, dynamic acquisition types value and data.When attribute and data need to change, according to the communication of setting
Agreement receives new attribute and data, the corresponding attribute of more new configuration file and data.If the attribute sum number of addition or modification
It is more according to comparing, it can directly replace configuration file.
Specific step is as follows:
First write the driving 21 of file storage.Because Flash is smaller in DSP piece, external memory space (
Can be described as " storage chip ") 6, such as Nand Flash, SD card.Consider the difficulty of implant system and the convenience of file storage, this
In preferred SD card, but be not limited to that SD card.DSP adds peripheral hardware SD card thus, is connected between DSP and SD card by SPI interface
It connects.The hardware drive program 2 of the SD card based on SPI is write, completes the reading and writing functional interface of SPI first, then realizes SD card
Initialization, the reading based on block (Block), write-in, erasing function.
Then next management method step is carried out:
1) suitable file system 22 is transplanted.The file system of transplanting can be SDCard, the file system such as Yaffs.
Fatfs is suitable for SDcard, Nand Flash. and Yaffs is suitable for Nand Flash.Due to its memory of the DSP of C2000 series
It is smaller (TMS320F28335 only has 16 Flash of 256K x, 16 SARAM of 34K x) with memory space, so being not appropriate for
Larger file system selects FatFs file system 3 here, and FatFs is a general file system module, writes and follows
ANSI C, independent of hardware platform, for realizing FAT file system in small embedded systems.FatFs is transplanted to
TMS320F28335 platform, specific steps include:
11) the FatFs code for downloading latest edition, FatFs code is added in CCS engineering, according to TMS320F28335
The minimum data width of data type used in platform modifying file, the DSP of C2000 series is 16Bits, and char is
16Bits, int 16Bits, long int are 32Bits, double 64Bits；
12) complete diskio.c file in disk_initialize (), disk_status (), disk_read (),
Bottom layer realization in disk_write (), disk_ioctl () interface function；
13) header file path in FatFs file is added in the Include config option of engineering, is compiled in FatFs file
Header file after insertion is formatted as the external memory space of Fat32 format, carries out file read-write test.
2) text resolution library 23 is transplanted, XML or JSON etc. can be used in text resolution library.Used here as JSON.JSON
Using being totally independent of the text formatting of language, but also use the habit similar to C language family.These characteristics make JSON
As ideal data interchange language.It is easy to people to read and write, while is also easy to machine parsing and generating.Selection open source JSON
Library cJSON is parsed, cJSON is a kind of data interchange format of lightweight.CJSON is a ultralight skilful, easy to carry, Dan Wen
Part, the JSON resolver that simply can be used as ANSI-C standard.JSON is transplanted to TMS320F28335 platform step are as follows:
21) the cJSON code for downloading latest edition only includes two files of cJSON.c and cJSON.h, the two texts
Part be added CCS engineering in, according to TMS320F28335 platform identity modify file used in data type, C2000 series
The minimum data width of DSP is 16Bits, and char 16Bits, int 16Bits, long int are 32Bits, and double is
64Bits；
22) realization for modifying malloc () in cJSON.c, makes it be adapted to 28335 platforms；It is suitable to be set as needed
The size of heap；
23) cJSON.h header file path is added in the Include config option of engineering, compiles cJSON.h header file；
It is tested using the test.c in the library CJSON.So far, FatFs file system is successful to C2000 series DSP platform transplantation.
3) it needs to construct software frame 24 according to exploitation: writing configuration file, include needing dynamic expansion in configuration file
Attribute.
4) as shown in figure 3, when needing to obtain attribute 31, the data of corresponding attribute or attribute type in text are read
32,33, guarantee the normal operation of software.When needing Update attribute and data, according to the communication protocol of setting, new attribute is received
And data, the corresponding attribute of more new configuration file and data.If the attribute and data of addition or modification are relatively more, may be selected
Directly replace the mode of configuration file.
The above embodiments are merely illustrative of the technical solutions of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should all cover of the invention
In scope of the claims.
Claims (2)
1. the management method of attribute and data on a kind of DSP based on text resolution, which comprises the following steps:
1) file system is transplanted；
2) text resolution library is transplanted；
3) it constructs software frame: writing configuration file, include the attribute for needing dynamic expansion in configuration file；
4) when needing to obtain attribute, the data of corresponding attribute or attribute type in file are read；Need Update attribute sum number
According to when, according to the communication protocol of setting, receive new attribute and data, the corresponding attribute of more new configuration file and data or directly
Replace configuration file；
It is that FatFs is transplanted to TMS320F28335 platform that file system is transplanted in the step 1), comprising the following steps:
11) FatFs code is added in CCS engineering, according to data type used in TMS320F28335 platform modifying file,
The minimum data width of the DSP of C2000 series is 16Bits, and char 16Bits, int 16Bits, long int are
32Bits, double 64Bits；
12) disk_initialize (), disk_status (), disk_read (), disk_ in the file of diskio.c are completed
Bottom layer realization in write (), disk_ioctl () interface function；
13) header file path in FatFs file is added in the Include config option of engineering, compiles head text in FatFs file
Part after insertion is formatted as the memory space of Fat32 format, carries out file read-write test；
It is transplanting XML or JSON that text resolution library is transplanted in the step 2, transplants JSON to TMS320F28335 platform
Step are as follows:
21) two files of the cJSON.c and cJSON.h of cJSON code are added in CCS engineering, it is flat according to TMS320F28335
Platform characteristic modifies data type used in file, and the minimum data width of the DSP of C2000 series is 16Bits, and char is
16Bits, int 16Bits, long int are 32Bits, double 64Bits；
22) realization for modifying malloc () in cJSON.c, makes it be adapted to TMS320F28335 platform；Heap is set as needed
Size；
23) cJSON.h header file path is added in the Include config option of engineering, compiles cJSON.h header file；It uses
Test.c in the library CJSON is tested.
2. the management method of attribute and data on the DSP according to claim 1 based on text resolution, feature exist
In first writing the driving of file storage before carrying out the step 1).
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| CN115242563B (en) * | 2021-06-25 | 2023-11-14 | 统信软件技术有限公司 | Network communication method, computing device and readable storage medium |
| CN114281429A (en) * | 2021-12-31 | 2022-04-05 | 上海匠岩智能科技有限公司 | JSON data analysis method based on array variables |
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| CN202362777U (en) * | 2011-11-11 | 2012-08-01 | 华南理工大学 | SD (secure digital) card file management controller based on FPGA (field programmable gate array) |
| CN103258044A (en) * | 2013-05-24 | 2013-08-21 | 北京航天自动控制研究所 | Two-tuple NANDFLASH data file management method oriented to DSP |
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