CN109634581A - A kind of date storage method based on STM32F103ZET6 and eMMC card - Google Patents
A kind of date storage method based on STM32F103ZET6 and eMMC card Download PDFInfo
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- CN109634581A CN109634581A CN201811322059.7A CN201811322059A CN109634581A CN 109634581 A CN109634581 A CN 109634581A CN 201811322059 A CN201811322059 A CN 201811322059A CN 109634581 A CN109634581 A CN 109634581A
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- emmc card
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/30—Creation or generation of source code
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The present invention provides a kind of date storage methods based on STM32F103ZET6 and eMMC card, using the STM32F103ZET6 single-chip microcontroller of ST company, it is crosslinked using SDIO module and eMMC card, realize the generation of clock and the transmission of order and data, SDIO interface mounts eMMC card, it is stored for data, and completes interface driver software design.Single-chip microcontroller high-performance, low cost, low-power consumption, the rich interface that the present invention uses, eMMC card is with size is small, memory capacity is big, read or write speed is fast, the advantages that long service life, flank speed is up to 416Mbps, ST company provides largely open software library, and interface driver software development is carried out on the basis of Freeware library, shortens the R&D cycle, simultaneously because software library is standard database, the interface driver software developed on the basis of standard database facilitates to be transplanted to other models；Self-defining data format, shields file system, substantially reduces the R&D cycle, and due to not having file system, reliability is higher in use for memory.
Description
Technical field
The present invention relates to embedded data technical field of memory, especially a kind of data design Storage method be can be applied to
Mobile phone, Portable type mobile storage device and other military, civilian data storage devices.
Background technique
In built-in field, single-chip microcontroller is small in size with its, light weight, cheap, the medium advantage of function collection become
It practises, the first choice of application and exploitation.STM32F103ZET6 single-chip microcontroller be aim at require high-performance, low cost, low-power consumption it is embedded
Using and the processor of ARM Cortex-M3 kernel that specially designs, be the single-chip microcontroller being most widely used at present.Many monolithics
Machine requires mass-memory unit and carrys out storing data, and this requires single-chip microcontrollers to have the function of massive store.Based on single-chip microcontroller
Data storage device design mainly consider following factor:
Memory capacity；
Interface compatibility；
Shape size；
Research and develop cost.
Currently, being suitable for the storage equipment of single-chip microcontroller mainly has eMMC card, flash disk, SD card, mmc card and CF card etc..eMMC
Card becomes insertion with the features such as its size is small, memory capacity is big, read or write speed is fast, movement is flexible, compatible, highly-safe forward
The first choice of formula field mobile device local datastore solution.
Using eMMC card as storage equipment, developer does not need to set again because of different NAND Flash suppliers
Count specification；Processing NAND Flash compatibility and problem of management are not needed；It the R&D cycle for substantially reducing new product, reduces
Research and develop cost；The software library that ST company offer simultaneously largely opens facilitates memory interface drive software using open source code
It realizes；File system is realized on single-chip microcontroller, can greatly increase research and development difficulty, while having the memory of file system in reality
In use process, due to powered-off fault etc., the reliability of memory devices can be reduced.
Summary of the invention
For overcome the deficiencies in the prior art, on Vehicles Collected from Market to low-power consumption, large capacity and miniaturized recorder
Demand, the present invention provides a kind of date storage method based on STM32F103 series monolithic and eMMC card, with realize compared with
In short time, on the basis of lower research and development cost, the small-sized of a kind of low-power consumption, large capacity, fast reading and writing and favorable expandability is developed
Data storage device.
The step of the technical solution adopted by the present invention to solve the technical problems, is as follows:
Step 1: using the STM32F103ZET6 single-chip microcontroller of ST company, using SDIO module and the crosslinking of eMMC card, when realization
The generation of clock and the transmission of order and data, SDIO interface mount eMMC card, store for data；
Step 2: interface driver software design
Firstly, selecting the software library based on STM32F103 system in the Open Source Code that ST company provides；
Secondly it on the basis of software library, is advised according to STM32F10x family chip SDIO interface specification and eMMC card agreement
Model completes the driving of eMMC card initialization；
EMMC card reading and writing operation driving is finally carried out according to eMMC card protocol specification, eMMC card is with 512 byte of data block
Form is written and read；
Step 3: self-defining data structure
Memory is written into according to self-defining data structure in data, self-defining data structure includes state packet and data packet,
State packet storage location is fixed, for identify memory capacity, software version, memory overlay marks, memory record number,
The position of total time, Data Area data significant notation, record data in memory is recorded, for inquiring when each packet data recording
It is used；The data type that data packet is defined according to practical application, more new state packet when recording data packet every time.
The state packet format is shown in Table 1, and data packet format is shown in Table 2:
The state packet format of 1 self-defining data structure of table
The data packet format of the customized table structure of table 2
The state packet and data package size are 512 bytes.
The beneficial effects of the present invention are:
1) present invention use STM32F103ZET6 single-chip microcontroller, the series monolithic have high-performance, low cost, low-power consumption,
The features such as rich interface, uses in built-in field very extensive at present；
2) eMMC card has many advantages, such as that size is small, memory capacity is big, read or write speed is fast, and long service life, flank speed can
Up to 416Mbps；
3) ST company provides largely open software library, and interface driver software is carried out on the basis of Freeware library and is opened
Hair, shortens the R&D cycle, simultaneously because software library is standard database, the interface driver developed on the basis of standard database
Software facilitates to be transplanted to other models；
4) self-defining data format shields file system, substantially reduces the R&D cycle, due to there is no file system,
Reliability is higher in use for memory.
Detailed description of the invention
Fig. 1 is the interconnection of signals relational graph of STM32F103ZET6 and eMMC card in the present invention.
Fig. 2 is interface driver software development flow figure of the present invention.
Fig. 3 is that eMMC card initialization of the present invention drives development process figure.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
The technical scheme is that first is that using STM32F103ZET6 processor SDIO interface, mount eMMC card,
It is stored for data；Second is that carrying out the exploitation of eMMC interface driver on the basis of Freeware library；Third is that file system is shielded,
Using self-defining data structure.
Step 1: using the STM32F103ZET6 single-chip microcontroller of ST company, using SDIO module and the crosslinking of eMMC card, when realization
The generation of clock and the transmission of order and data, SDIO interface mount eMMC card, store for data；
Step 2: interface driver software design
Firstly, selecting the software library based on STM32F103 system in the Open Source Code that ST company provides；
Secondly it on the basis of software library, is advised according to STM32F10x family chip SDIO interface specification and eMMC card agreement
Model completes the driving of eMMC card initialization；
EMMC card reading and writing operation driving is finally carried out according to eMMC card protocol specification, eMMC card is with 512 byte of data block
Form is written and read；
Step 3: self-defining data structure
Memory is written into according to self-defining data structure in data, self-defining data structure includes state packet and data packet,
State packet storage location is fixed, for identify memory capacity, software version, memory overlay marks, memory record number,
Total time, Data Area data significant notation are recorded (in order to which gradually small memory erasing time, real data can not have to greatest extent
Erasing, it is invalid to set data field), position of the record data in memory, when for each packet data recording used in inquiry；Number
According to the data type that packet is defined according to practical application, more new state packet when recording data packet every time.State packet and packet structure
Definition meets record demand, some of them field can self-defining according to actual needs, state packet and data package size are 512
Byte, state packet format are shown in Table 1, and data packet format is shown in Table 2.
The state packet format of 1 self-defining data structure of table
The data packet format of the customized table structure of table 2
Hardware of the invention uses the STM32F103ZET6 single-chip microcontroller of ST company, which has SDIO interface, can prop up
The memories such as SD card, eMMC card are held, while can be used for extending mass storage, the correlation of eMMC card is realized using SDIO module
Function, such as the generation of clock, the transmission of order and data.SDIO interface mounts eMMC card, stores for data.
STM32F103ZET6 single-chip microcontroller and eMMC card signal crosslinking relationship are shown in Fig. 1.
In order to realize that STM32F103ZET6 single-chip microcontroller to the read-write operation of eMMC card, needs exploitation to be based on
The eMMC card interface drive software of STM32F103ZET6, entire interface driver software development flow are shown in Fig. 2.Firstly, in ST company
Software library based on STM32F103 system is provided in the Open Source Code of offer；Secondly on the basis of software library, according to
STM32F10x family chip SDIO interface specification and eMMC card protocol specification carry out the driving exploitation of eMMC card initialization, eMMC
Card initialization is the core of entire drive software, and only initialization is correct, just can be carried out the read-write operation of data, initialization process
Figure is shown in Fig. 3；EMMC card reading and writing operation driving exploitation is finally carried out according to eMMC card protocol specification, eMMC card is with data block (512
Byte) form be written and read.
After realizing single-chip microcontroller to the normal read-write operation of eMMC card, data are written according to self-defining data structure and are stored
Device.Self-defining data structure includes state packet and data packet, and state packet storage location is fixed, for identifying memory capacity, soft
Part version, memory overlay marks, memory record number, record total time, Data Area data significant notation are (for maximum limit
Degree gradually small memory erasing time, real data can not have to erasing, it is invalid to set data field), record data are in memory
Interior position, when for each packet data recording used in inquiry；Data packet is the data type defined according to practical application, is remembered every time
More new state packet when recording data packet.
Claims (2)
1. a kind of date storage method based on STM32F103ZET6 and eMMC card, it is characterised in that include the following steps:
Step 1: using the STM32F103ZET6 single-chip microcontroller of ST company, being crosslinked using SDIO module and eMMC card, realize clock
It generates and the transmission of order and data, SDIO interface mounts eMMC card, stored for data；
Step 2: interface driver software design
Firstly, selecting the software library based on STM32F103 system in the Open Source Code that ST company provides；
Secondly complete according to STM32F10x family chip SDIO interface specification and eMMC card protocol specification on the basis of software library
It is driven at eMMC card initialization；
EMMC card reading and writing operation driving is finally carried out according to eMMC card protocol specification, eMMC card is in the form of 512 byte of data block
It is written and read；
Step 3: self-defining data structure
Memory is written into according to self-defining data structure in data, self-defining data structure includes state packet and data packet, state
Packet storage location is fixed, for identifying memory capacity, software version, memory overlay marks, memory record number, record
Total time, Data Area data significant notation record position of the data in memory, for inquiring institute when each packet data recording
With；The data type that data packet is defined according to practical application, more new state packet when recording data packet every time；The state packet format
It is shown in Table 1, data packet format is shown in Table 2.
The state packet format of 1 self-defining data structure of table
The data packet format of the customized table structure of table 2
2. a kind of date storage method based on STM32F103ZET6 and eMMC card according to claim 1, feature exist
In including the following steps:
The state packet and data package size are 512 bytes.
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| CN201811322059.7A CN109634581B (en) | 2018-11-08 | 2018-11-08 | Data storage method based on STM32F103ZET6 and eMMC card |
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| CN109634581B CN109634581B (en) | 2022-01-04 |
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