CN108242220A - The driving method and device of a kind of display screen - Google Patents
The driving method and device of a kind of display screen Download PDFInfo
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- CN108242220A CN108242220A CN201611219554.6A CN201611219554A CN108242220A CN 108242220 A CN108242220 A CN 108242220A CN 201611219554 A CN201611219554 A CN 201611219554A CN 108242220 A CN108242220 A CN 108242220A
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- display screen
- ebi
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses the driving method and device of a kind of display screen, to drive the liquid crystal display of 6800 series or 8080 series MPU bus control interfaces.The driving method of the display screen, including：External bus interface EBI modules are initialized, wherein, the display screen is connect by EBI modules with operating system；The facility information of the display screen of the EBI modules connection is read, wherein, the facility information includes the resolution ratio of display screen；According to the resolution ratio of the display screen, the address space for storing content to be displayed is distributed, will be shown in content to be displayed write-in described address space.
Description
Technical field
The present invention relates to field of terminal technology more particularly to a kind of display screen based on linux system driving method and
Device.
Background technology
It is widely used at home now with built-in Linux, its own agreement is also in development at full speed, with full
The various hardware devices of foot and business demand.Current most mobile phone is required for the liquid crystal display of human-computer interaction to show work(
Can, this is to cater to the demand of mainstream user group as source.
But the liquid crystal display of current embedded Linux system (Liquid Crystal Display, LCD) connects
Mouthful, it is largely by I2C (Inter-Integrated Circuit) buses or Serial Peripheral Interface (SPI) (Serial
Peripheral Interface, SPI) transmission data and command information, this may result in a part based on 6800 series or
The liquid crystal display of 8080 series microprocessor of person (Microprocessor Unit, MPU) bus control interface can not be run.
In conclusion the liquid crystal display interface of system in the prior art, is largely by I2C buses or SPI biographies
Transmission of data and command information, cause the liquid crystal displays based on 6800 series or 8080 series MPU bus control interfaces that can not transport
Row.
Invention content
An embodiment of the present invention provides the driving method and device of a kind of display screen, to drive 6800 series or 8080
The liquid crystal display of serial MPU bus control interfaces.
A kind of driving method of display screen provided in an embodiment of the present invention, this method include：To external bus interface EBI moulds
Block is initialized, wherein, the display screen is connect by EBI modules with operating system；Read the aobvious of the EBI modules connection
The facility information of display screen, wherein, the facility information includes the resolution ratio of display screen；According to the resolution ratio of the display screen, divide
The address space of storage content to be displayed is used in, will be shown in content to be displayed write-in described address space.
It in the above method provided in an embodiment of the present invention, initializes, reads to external bus interface EBI modules
The facility information of the display screen of EBI modules connection, facility information includes the resolution ratio of display screen, according to the resolution ratio of display screen,
The address space for storing content to be displayed is distributed, will be shown in content to be displayed writing address space, pass through EBI moulds
Block controls and guiding meets 6800 series or 8080 serial parallel port hardware time orders, and content to be displayed is written to store
It is shown, is realized total by 6800 series of EBI module drives or 8080 series MPU in the address space of content to be displayed
The liquid crystal display of line traffic control interface.
In a kind of possible embodiment, in the above method provided in an embodiment of the present invention, according to the display screen
Resolution ratio, distribute after the address space for storing content to be displayed, will be in content to be displayed write-in described address space
Before being shown, this method further includes：According to the resolution ratio of content to be displayed and the display screen, the display screen is determined
Data to be displayed in each pixel；It establishes in described address space in storage unit and the display screen between pixel
Mapping relations；Then shown in the space by content to be displayed write-in described address, including：According to the mapping relations,
It will be shown in the corresponding storage unit of the pixel in data to be displayed write-in described address space in each pixel.
In a kind of possible embodiment, in the above method provided in an embodiment of the present invention, in described address space
Storage unit is corresponded with the pixel in the display screen.
In a kind of possible embodiment, in the above method provided in an embodiment of the present invention, this method further includes：Pass through
The EBI modules send control instruction to display screen, control the dispaly state of the display screen.
In a kind of possible embodiment, in the above method provided in an embodiment of the present invention, to external bus interface
After EBI modules are initialized, before the facility information for the display screen for reading the EBI modules connection, this method further includes：
Open the equipment handle of the EBI modules.
A kind of driving device of display screen provided in an embodiment of the present invention, the device include：Dispensing unit, for outside
Bus interface EBI modules are initialized, wherein, the display screen is connected by the operating system where EBI modules and the device
It connects；Acquiring unit, for reading the facility information of the display screen of the EBI modules connection, wherein, the facility information includes aobvious
The resolution ratio of display screen；Processing unit for the resolution ratio according to the display screen, distributes the address for storing content to be displayed
Space will be shown in content to be displayed write-in described address space.
It in above device provided in an embodiment of the present invention, initializes, reads to external bus interface EBI modules
The facility information of the display screen of EBI modules connection, facility information includes the resolution ratio of display screen, according to the resolution ratio of display screen,
The address space for storing content to be displayed is distributed, will be shown in content to be displayed writing address space, pass through EBI moulds
Block controls and guiding meets 6800 series or 8080 serial parallel port hardware time orders, and content to be displayed is written to store
It is shown, is realized total by 6800 series of EBI module drives or 8080 series MPU in the address space of content to be displayed
The liquid crystal display of line traffic control interface.
In a kind of possible embodiment, in above device provided in an embodiment of the present invention, the processing unit, in root
It according to the resolution ratio of the display screen, distributes after the address space for storing content to be displayed, institute is written into content to be displayed
It states before being shown in address space, is additionally operable to：According to the resolution ratio of content to be displayed and the display screen, determine described
Data to be displayed in each pixel of display screen；Establish storage unit and pixel in the display screen in described address space
Between mapping relations；Then the processing unit will be shown in content to be displayed write-in described address space, is specifically used for：
According to the mapping relations, deposit the pixel is corresponding in the data to be displayed write-in described address space in each pixel
It is shown in storage unit.
In a kind of possible embodiment, in above device provided in an embodiment of the present invention, the processing unit is established
Mapping relations in, storage unit in described address space is corresponded with the pixel in the display screen.
In a kind of possible embodiment, in above device provided in an embodiment of the present invention, which further includes：It sends
Unit for sending control instruction to display screen by the EBI modules, controls the dispaly state of the display screen.
In a kind of possible embodiment, in above device provided in an embodiment of the present invention, the dispensing unit, right
After external bus interface EBI modules are initialized, before the facility information for the display screen for reading the EBI modules connection,
It is additionally operable to：Open the equipment handle of the EBI modules.
Description of the drawings
Fig. 1 is a kind of schematic flow diagram of the driving method of display screen provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic flow diagram of the idiographic flow of the driving method of display screen provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of the driving device of display screen provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, to the specific implementation of the driving method and device of a kind of display screen provided in an embodiment of the present invention
Mode is described in detail.
It should be noted that the driving method of display screen provided in an embodiment of the present invention, is designed for linux system, it can
To operate in the terminal for supporting linux system, connect for passing through standard EBI interfaces and drive parallel port display screen.
The driving method of a kind of display screen provided in an embodiment of the present invention, as shown in Figure 1, this method includes：
Step 102, external bus interface EBI modules are initialized, wherein, display screen passes through EBI modules and operation
System connects.
In this step, carry out initializing it to external bus interface (External Bus Interface, EBI) module
Before, it needs to load EBI drive modules, wherein, the mode of dynamic load may be used in loading EBI drive modules, can also use
The mode of static loading, more preferably, in the embodiment of the present invention by the way of dynamic load, in order to flexibly add driving
The function of display screen.After EBI drive modules are loaded, EBI modules are initialized, the choosing of the function of EBI modules is configured
.
More preferably, after being initialized to EBI modules, this method further includes：Open the equipment sentence of EBI modules
Handle.When it is implemented, the equipment handle of EBI modules under system/dev catalogues is opened, due in linux system, in/dev catalogues
The external equipment used in all linux systems is contained ,/dev catalogues are actually the port of an access external equipment, because
This, the equipment handle of EBI modules namely the EBI interfaces of opening system under opening/dev catalogues, in order to subsequently transfer driving journey
Sequence.
Step 104, the facility information of the display screen of EBI modules connection is read, wherein, facility information includes point of display screen
Resolution.
In the embodiment of the present invention, display screen is connected by EBI interfaces with operating system, to EBI module initializations, and
After the equipment handle for opening EBI modules, you can the facility information of display screen is read, wherein, the facility information of display screen includes
But the resolution ratio of display screen is not limited to, which represents the pixel quantity of display screen in each direction, such as：Resolution ratio 1920
× 1080, refer to show 1920 pixels on display screen length direction, can be shown in width direction (or short transverse)
Show 1080 pixels.Certainly, in other embodiments of the invention, the miscellaneous equipment information of display screen, example can also be obtained
Such as：Model of display screen etc..
What deserves to be explained is the facility information of display screen is read in the embodiment of the present invention namely reads the resolution of display screen
Rate, in order to be to match with the resolution ratio of display screen by the resolution adjustment of content to be displayed, specifically, if in be shown
The resolution ratio of appearance is identical with the resolution ratio of display screen, then without adjustment, if the resolution of the resolution ratio of content to be displayed and display screen
Rate is different, then in order to promote display effect, the resolution ratio of content to be displayed can be adjusted, so that content to be displayed
Resolution ratio and the resolution ratio of display screen match.
Step 106, according to the resolution ratio of display screen, the address space for storing content to be displayed is distributed, it will be to be shown
Content writing address is shown in space.
In the embodiment of the present invention, according to the resolution ratio of display screen, distributed in system kernel space to be shown for storing
The address space of content, and will be shown in content to be displayed writing address space.
When it is implemented, in the resolution ratio according to display screen, distribute after the address space for storing content to be displayed,
By before being shown in content to be displayed writing address space, this method further includes：According to content to be displayed and display screen
Resolution ratio, determine the data to be displayed in each pixel of display screen, establish in address space in storage unit and display screen
Mapping relations between pixel will then show in content to be displayed writing address space, including：According to mapping relations,
It will be shown in the corresponding storage unit of the pixel in data to be displayed writing address space in each pixel.Its
In, the pixel in the storage unit and display screen in address space corresponds.
What deserves to be explained is the size of the corresponding storage unit of each pixel can be set based on experience value, this
Invention does not limit this.It distributes to store the address space of content to be displayed, and establish address space in kernel spacing
After the mapping relations of middle storage unit and each pixel of display screen, when content to be displayed is shown in display screen, only need by
The data to be displayed of each pixel is written in the corresponding storage unit of the pixel in content to be displayed, you can in display screen
Middle display data to be shown, so as to reduce the expense of system calling.
It in method provided in an embodiment of the present invention, is initialized to external bus interface EBI modules, reads EBI moulds
The facility information of the display screen of block connection, facility information include the resolution ratio of display screen, and according to the resolution ratio of display screen, distribution is used
In the address space of storage content to be displayed, it will show in content to be displayed writing address space, controlled by EBI modules
Meet the parallel port hardware time order of 6800 series or 8080 series with guiding, content to be displayed is written to be shown for storing
It is shown, is realized through 6800 series of EBI module drives or 8080 series MPU bus marcos in the address space of content
The liquid crystal display of interface.
More preferably, the embodiment of the present invention can also send control instruction, control display by EBI modules to display screen
The dispaly state of screen.Such as：The control instruction of bright screen is sent, control display screen is in illuminating state；The control for sending the screen that goes out refers to
It enables, control display screen is gone out screen.
The driving method of display screen provided in an embodiment of the present invention is described in detail with reference to Fig. 2.Such as Fig. 2 institutes
Show, the specific steps of the driving method of display screen provided in an embodiment of the present invention, including：
Step 202, EBI drive modules are loaded；More preferably, EBI drive modules are loaded by the way of dynamic load；
Step 204, initialization operation is carried out to EBI modules, the function choosing-item of EBI modules is configured；
Step 206, the equipment handle of EBI modules is opened；
Step 208, the facility information of display screen is read, specifically, reads the resolution ratio of display screen；
Step 210, it distributes address space in kernel spacing, and by Address space mappinD to application layer, establishes address sky
Between mapping relations between middle storage unit and pixels of display screen；
Step 212, it sends control instruction to display screen and data to be displayed is written into address space in display screen
It is shown.
As can be seen that EBI drive modules are in the mistake of driving display screen in the embodiment of the present invention from above-mentioned steps 202-212
Play the role of forming a connecting link in journey, specifically, for bottom layer driving, to the various Read-write Catrol functions of displaying screen controller
It is packaged, processing for intermediate layer data and reports；For upper strata EBI communication interface standards, calling interface, Zhi Daoman are added
Until the function operation of sufficient upper layer application.
The driving device of a kind of display screen provided in an embodiment of the present invention, as shown in figure 3, the device includes：Dispensing unit
302, for being initialized to external bus interface EBI modules, wherein, display screen passes through where EBI modules and the device
Operating system connects；Acquiring unit 304, for reading the facility information of the display screen of EBI modules connection, wherein, facility information
Resolution ratio including display screen；Processing unit 306 for the resolution ratio according to display screen, distributes to store content to be displayed
Address space, will be shown in content to be displayed writing address space.
It in device provided in an embodiment of the present invention, is initialized to external bus interface EBI modules, reads EBI moulds
The facility information of the display screen of block connection, facility information include the resolution ratio of display screen, and according to the resolution ratio of display screen, distribution is used
In the address space of storage content to be displayed, it will show in content to be displayed writing address space, controlled by EBI modules
Meet the parallel port hardware time order of 6800 series or 8080 series with guiding, content to be displayed is written to be shown for storing
It is shown, is realized through 6800 series of EBI module drives or 8080 series MPU bus marcos in the address space of content
The liquid crystal display of interface.
In a kind of possible embodiment, in device provided in an embodiment of the present invention, processing unit 306, according to aobvious
The resolution ratio of display screen is distributed after the address space for storing content to be displayed, will be in content to be displayed writing address space
Before being shown, it is additionally operable to：According to the resolution ratio of content to be displayed and display screen, determine in each pixel of display screen
Data to be displayed；Establish the mapping relations in storage unit and display screen between pixel in address space；Then processing unit 306
It will show, be specifically used in content to be displayed writing address space：According to mapping relations, will wait to show in each pixel
Registration in writing address space in the corresponding storage unit of the pixel according to being shown.
In a kind of possible embodiment, in device provided in an embodiment of the present invention, the mapping of the foundation of processing unit 306
In relationship, the pixel in the storage unit and display screen in address space corresponds.
In a kind of possible embodiment, in device provided in an embodiment of the present invention, which further includes：Transmitting element
308, for passing through EBI modules control instruction, the dispaly state of control display screen are sent to display screen.
In a kind of possible embodiment, in device provided in an embodiment of the present invention, dispensing unit 302, to outside
After bus interface EBI modules are initialized, before the facility information for the display screen for reading the connection of EBI modules, it is additionally operable to：It beats
Open the equipment handle of EBI modules.
The driving device of display screen provided in an embodiment of the present invention can be integrated in an operating system, be connect for passing through EBI
6800 series of mouth module drive or 8080 series of display screens, wherein, dispensing unit 302, acquiring unit 304 and processing unit
306 may be used CPU processor etc., and signal projector etc. may be used in transmitting element 308.
In conclusion the driving method and device of a kind of display screen provided in an embodiment of the present invention, connect to external bus
Mouth EBI modules are initialized, and read the facility information of the display screen of EBI modules connection, and facility information includes point of display screen
Resolution according to the resolution ratio of display screen, distributes the address space for storing content to be displayed, by content to be displayed writing address
It is shown in space, controls and guide the parallel port hardware time order for meeting 6800 series or 8080 series by EBI modules, it will
Content to be displayed is written in the address space for storing content to be displayed and is shown, realizes through EBI module drives
The liquid crystal display of 6800 series or 8080 series MPU bus control interfaces.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware can be used in the present invention
Apply the form of example.Moreover, the computer for wherein including computer usable program code in one or more can be used in the present invention
The shape of computer program product that usable storage medium is implemented on (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device of function specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of driving method of display screen, which is characterized in that this method includes：
External bus interface EBI modules are initialized, wherein, the display screen is connect by EBI modules with operating system；
The facility information of the display screen of the EBI modules connection is read, wherein, the facility information includes the resolution of display screen
Rate；
According to the resolution ratio of the display screen, the address space for storing content to be displayed is distributed, content to be displayed is written
Described address is shown in space.
2. according to the method described in claim 1, it is characterized in that, in the resolution ratio according to the display screen, distribute to deposit
After the address space for storing up content to be displayed, content to be displayed is written in described address space before being shown, this method
It further includes：
According to the resolution ratio of content to be displayed and the display screen, the number to be shown in each pixel of the display screen is determined
According to；
Establish the mapping relations in storage unit and the display screen between pixel in described address space；
Then shown in the space by content to be displayed write-in described address, including：
According to the mapping relations, the pixel in the data to be displayed write-in described address space in each pixel is corresponded to
Storage unit in shown.
3. according to the method described in claim 2, it is characterized in that, storage unit in described address space and the display screen
In pixel correspond.
4. method according to any one of claim 1-3, which is characterized in that this method further includes：
Control instruction is sent to display screen by the EBI modules, controls the dispaly state of the display screen.
5. method according to any one of claim 1-3, which is characterized in that external bus interface EBI modules into
After row initialization, before the facility information for the display screen for reading the EBI modules connection, this method further includes：Described in opening
The equipment handle of EBI modules.
6. a kind of driving device of display screen, which is characterized in that the device includes：
Dispensing unit, for being initialized to external bus interface EBI modules, wherein, the display screen by EBI modules with
Operating system connection where the device；
Acquiring unit, for reading the facility information of the display screen of the EBI modules connection, wherein, the facility information includes
The resolution ratio of display screen；
Processing unit for the resolution ratio according to the display screen, distributes the address space for storing content to be displayed, will treat
Display content write-in described address is shown in space.
7. device according to claim 6, which is characterized in that the processing unit, in the resolution according to the display screen
Rate is distributed after the address space for storing content to be displayed, will be shown in content to be displayed write-in described address space
Before showing, it is additionally operable to：
According to the resolution ratio of content to be displayed and the display screen, the number to be shown in each pixel of the display screen is determined
According to；
Establish the mapping relations in storage unit and the display screen between pixel in described address space；
Then the processing unit will be shown in content to be displayed write-in described address space, is specifically used for：
According to the mapping relations, the pixel in the data to be displayed write-in described address space in each pixel is corresponded to
Storage unit in shown.
8. device according to claim 7, which is characterized in that in the mapping relations that the processing unit is established, describedly
Storage unit in the space of location is corresponded with the pixel in the display screen.
9. according to the device described in any one of claim 6-8, which is characterized in that the device further includes：
Transmitting element for sending control instruction to display screen by the EBI modules, controls the display shape of the display screen
State.
10. according to the device described in any one of claim 6-8, which is characterized in that the dispensing unit, to external bus
After interface EBI modules are initialized, before the facility information for the display screen for reading the EBI modules connection, it is additionally operable to：It beats
Open the equipment handle of the EBI modules.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611219554.6A CN108242220A (en) | 2016-12-26 | 2016-12-26 | The driving method and device of a kind of display screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611219554.6A CN108242220A (en) | 2016-12-26 | 2016-12-26 | The driving method and device of a kind of display screen |
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| CN201611219554.6A Pending CN108242220A (en) | 2016-12-26 | 2016-12-26 | The driving method and device of a kind of display screen |
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Application publication date: 20180703 |