CN106648513A - Image display control method and device, microcontroller and electronic cigarette - Google Patents
Image display control method and device, microcontroller and electronic cigarette Download PDFInfo
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- CN106648513A CN106648513A CN201611237982.1A CN201611237982A CN106648513A CN 106648513 A CN106648513 A CN 106648513A CN 201611237982 A CN201611237982 A CN 201611237982A CN 106648513 A CN106648513 A CN 106648513A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/06—Addressing a physical block of locations, e.g. base addressing, module addressing, memory dedication
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to an image display control method and device, a microcontroller and an electronic cigarette. The method comprises the steps of: according to a target application, calculating a storage base address of an image to be displayed; acquiring image parameters of the image to be displayed; acquiring cache regions in an idle state, and controlling a DMA controller to sequentially read N rows of data to the cache regions in the idle state from a position of the storage base address in a storage, wherein at least two cache regions are provided; and when detecting that data exists in the cache regions, respectively transmitting the data stored in each cache region to a display screen for display. By arranging a plurality of cache regions, parallel processing of reading the pixel data of the image to be displayed by the MDA controller and sending the read data to the display screen for display by the microcontroller is implemented, time consumed by image display is saved, and an image display speed is improved. According to the method, a video memory does not need to be increased additionally, cost is low and performance is high.
Description
Technical field
The present invention relates to microcontroller technical field, more particularly to a kind of picture display control method and device, micro-control
Device processed and electronic cigarette.
Background technology
Have on Vehicles Collected from Market and carry lcd controller and the microcontroller without lcd controller, generally carry lcd controller
System possess the high image display performance of comparison, display content renewal speed does not have an obvious delay, but such micro-control
Device processed generally needs to extend out SDRAM that (Synchronous Dynamic Random Access Memory, synchronous dynamic random is deposited
Reservoir) used as video memory, cost is higher.Generally need from the LCD for carrying screen display function without the system of lcd controller, this
, due to communication modes reason, image update rate-constrained, visual effect is poor, but cost is relatively low for class system.
The content of the invention
Based on this, it is necessary to provide the high picture display control method of a kind of low cost and performance and device, microcontroller
And electronic cigarette.
A kind of picture display control method, including：
The storage plot of picture to be shown is calculated according to intended application；
Obtain the image parameters of picture to be shown；
The buffer area of idle condition is obtained, control dma controller is successively from the position of the storage plot from memory
The buffer area for reading N rows data to idle condition is acted, the buffer area at least includes two；
When there is data in detecting buffer area, the data transfer that each buffer area is will be stored in respectively is entered to display screen
Row shows.
A kind of picture display control unit, including：Computing module, acquisition module, control module and transport module；
The computing module, for calculating the storage plot of picture to be shown according to intended application；
The acquisition module, for obtaining the image parameters of picture to be shown；
The control module, for obtaining the buffer area of idle condition, control dma controller is successively from memory from institute
The buffer area for reading N rows data to idle condition is acted in the position for stating storage plot, and the buffer area at least includes two；
The transport module, for when there is data in detecting buffer area, will be stored in each buffer area respectively
Data transfer to display screen is shown.
A kind of microcontroller, including above-mentioned picture display control unit.
A kind of electronic cigarette, including dma controller, Flash chip, display screen and above-mentioned microcontroller；The FLASH cores
Piece and the display screen are connected with the microcontroller by SPI interface；The dma controller and the microcontroller are by being
System bus connection.
Above-mentioned picture display control method and device, microcontroller and electronic cigarette, are provided by multiple buffer areas,
The N row data of picture to be shown are sent to the buffer area of idle condition by MDA controllers successively, have data when buffer area is detected
When, microcontroller is respectively shown the data transfer of each buffer area to display screen, waits to show so as to realize that MDA controllers read
The parallel processing that the pixel data and microcontroller of diagram piece is shown the data is activation of reading to display screen, saves figure
Piece shows the spent time, improves the speed that picture shows.The method is without the need for additionally increasing video memory, low cost and performance height.
Description of the drawings
Fig. 1 is the structured flowchart of the electronic cigarette of one embodiment；
Fig. 2 is the flow chart of the picture display control method of one embodiment；
Fig. 3 reads data to control dma controller in the picture display control method of one embodiment from memory
The flow chart of step；
Fig. 4 is the flow chart of the picture display control method of a specific embodiment；
Fig. 5 is the structured flowchart of the picture display control unit of one embodiment.
Specific embodiment
In one embodiment, there is provided a kind of electronic cigarette, DMA as shown in Figure 1 (Direct Memory Access, directly
Memory access) controller 102, Flash chip 104, display screen 106 and microcontroller 108, FLASH chip 104 and display screen
106 are connected with microcontroller 108 by SPI interface, and dma controller 102 and microcontroller 108 are connected by system bus.
FLASH chip 104 is used to store image data, and dma controller 102 is provided with multiple buffer areas, for successively will
The N rows data of picture to be shown from FLASH chip copy to free time buffer area, microcontroller by buffer area data is activation to show
Display screen is shown.
In a specific embodiment, dma controller is provided with the first buffer area and the second buffer area.When first slow
The non-end of transmission of data in area is deposited, then the first buffer area is in busy condition, dma controller is by the FLASH cores of picture to be shown
Next one N row data copy to the second buffer area in piece.Meanwhile, microprocessor 108 is by the data is activation of buffer area to display screen
106 show, by microcontroller 108 and the concurrent working of dma controller 102, improve the performance that picture shows.
In one embodiment, there is provided a kind of picture display control method, as shown in Fig. 2 including：
S202：The storage plot of picture to be shown is calculated according to intended application.
Intended application refers to the microprocessor application program to be performed.By taking electronic cigarette as an example, application program include igniting,
The application programs such as regulation, different application programs picture shown on a display screen is different.
The data of picture to be shown are programmed in binary form in FLASH chip, and storage plot is referred to according to target
Initial storage address of the corresponding pixel data in viewing area of the picture to be shown of computation in FLASH chip.
S204：Obtain the image parameters of picture to be shown.
The image parameters of picture to be shown include picture size, specifically include picture length and width, picture size
Unit is pixel.
S206：The buffer area of idle condition is obtained, the position that dma controller deposits successively plot certainly from memory is controlled
The buffer area for reading N rows data to idle condition is acted, buffer area at least includes two.
In the present embodiment, buffer area at least includes two.Specifically, microprocessor controls dma controller from memory
First N rows data is read from the position of storage plot to first idle buffer area, then controls dma controller reading and treated
The next N rows data of picture are shown to second buffer area, the like.Memory in the present embodiment can be FALSH
Chip.
S206：When there are data in detecting buffer area, the data transfer of each buffer area is will be stored in respectively to display screen
Shown.
In the present embodiment, when detecting buffer area and there are data, the data transfer of buffer area is shown to display screen.
The step of step reads the data of picture to be shown to idle buffer area with dma controller is carried out parallel, two steps
Do not collide between rapid, dma controller reads successively N rows data to idle buffer area from memory, when detecting buffer area
When having data, microprocessor is shown the data transfer of buffer area to display screen.
During picture shows, the pixel data of picture to be shown is read from memory and by the number for reading
Carry out showing that the time that the two steps expend is most long according to display screen is sent to.In the present embodiment, multiple cachings are provided by
The N row data of picture to be shown are sent to the buffer area of idle condition by area, MDA controllers successively, are had when buffer area is detected
During data, microcontroller is respectively shown the data transfer of each buffer area to display screen, so as to realize that MDA controllers read
The parallel processing that the pixel data and microcontroller of picture to be shown is shown the data is activation of reading to display screen, section
About picture shows the spent time, improves the speed that picture shows.The method is without the need for additionally increasing video memory, low cost and performance
It is high.
In another embodiment, as shown in figure 3, step S206 is specifically included：
S2062：The buffer area of idle condition is obtained, dma controller is controlled and N row data is read from the position of storage plot
To one of caching of idle condition.
Specifically, the step includes：The buffer area of idle condition is obtained, dma controller is controlled from the position for depositing plot
Act the one of caching for reading N rows data to idle condition；The state for housing the buffer area of data is set to busy.
S2064：Judge whether the data of picture to be shown read according to image parameters to finish.
S2066：First pixel number evidence of N+1 rows is labeled as depositing plot, and return to step S2062.
Step S208 includes：When there are data in detecting buffer area, the data transfer of each buffer area is will be stored in aobvious
Display screen is shown；The state for completing the buffer area of data transfer is set into the free time.
In the present embodiment, it is provided with by the state of the buffer area to housing data busy, data transfer will be completed
The state of buffer area be set to the free time, when the data of picture to be shown do not read to be finished, control dma controller is from depositing base
Act the one of caching for reading N rows data to idle condition in the position of location such that it is able to realize that dma controller is constantly waited to show
The pixel data of diagram piece reads caching from memory access.Microcontroller can be operated in parallel schema with dma controller, most
Big possibly to play hardware performance, acceleration system updates picture capabilities, and picture renewal speed may be up to 12 frames/second.
Below, illustrate so that dma controller is provided with two buffer areas as an example.In a specific embodiment,
Dma controller is provided with two buffer areas, respectively the first buffer area and the second buffer area.As shown in figure 4, picture display control
Method, comprises the following steps：
S401：The storage plot of picture to be shown is calculated according to intended application.
S402：Obtain the image parameters of picture to be shown.
S403：Control dma controller starts, and N row data are read to the free time from the position of storage plot from memory
First buffer area of state.
S404：Judge whether the data of picture to be shown read according to the image parameters of picture to be shown to finish.If it is not, then
Execution step S405.If so, then notify that other display modules on picture update.
S405：Judge which buffer area DMA is operating.If operating the first buffer area, execution step
S4061, if operating the second buffer area, execution step S4062.
S4061：Wait dma controller being transmitted in the first buffer area.
S4071：Control dma controller reads lower N rows data to the second buffer area from memory.
S4081：The data is activation of the first buffer area is shown to display screen.
S4062：Wait dma controller being transmitted in the second buffer area.
S4072：Control dma controller reads lower N rows data to the first buffer area from memory.
S4082：The data is activation for waiting the second buffer area is shown to display screen.
After the step of step S4081 and S4082, return to step S404.
Above-mentioned picture display control method, due to DMA can at last one dedicated for data carry coprocessor,
Therefore two sufficiently large buffering areas are opened up, operation every time first starts DMA, allow it carry from SPI Flash image data to
One of buffering area, now MCU then the image data in another buffering area for having obtained before is sent to TFT, lead to
Above method is crossed, MCU and DMA can be operated in parallel schema, and the performance hardware performance of maximum possible, acceleration system updates picture
Ability.
A kind of picture display control unit, as shown in figure 5, including computing module 501, acquisition module 502, control module
503 and transport module 504.
Computing module 501, for calculating the storage plot of picture to be shown according to intended application.
Acquisition module 502, for obtaining the image parameters of picture to be shown.
Control module 503, for obtaining the buffer area of idle condition, control dma controller is deposited successively certainly from memory
The buffer area for reading N rows data to idle condition is acted in the position for putting plot, and buffer area at least includes two.
Transport module 504, the data for when there is data in detecting buffer area, will be stored in each buffer area respectively are passed
Transport to display screen to be shown.
In the present embodiment, multiple buffer areas are provided by, MDA controllers successively send out the N rows data of picture to be shown
The buffer area of idle condition is sent to, when detecting buffer area and there are data, microcontroller is respectively by the data transfer of each buffer area
Shown to display screen, will be read so as to realize that MDA controllers read the pixel data and microcontroller of picture to be shown
The parallel processing that shown to display screen of data is activation, save picture and show the spent time, raising picture shows
Speed.The method is without the need for additionally increasing video memory, low cost and performance height.
In another embodiment control module includes：Read module, judge module and mark module.
Read module, for obtaining the buffer area of idle condition, controls dma controller and reads from the position of storage plot
One of buffer area of the N rows data to idle condition；
Judge module, finishes for judging whether the data of picture to be shown read according to image parameters；
Mark module, for when the judged result of judge module is no, by first pixel number of N+1 rows according to mark
It is designated as depositing plot.
In another embodiment, also including setup module, the state for the buffer area by data are housed is set to
Busy, the state for being additionally operable to the buffer area by data transfer is completed is set to the free time.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (8)
1. a kind of picture display control method, it is characterised in that include：
The storage plot of picture to be shown is calculated according to intended application；
Obtain the image parameters of picture to be shown；
The buffer area of idle condition is obtained, dma controller is controlled and is read from the position of the storage plot from memory successively
N rows data are taken to the buffer area of idle condition, the buffer area at least includes two；
When there is data in detecting buffer area, the data transfer that each buffer area is will be stored in respectively is shown to display screen
Show.
2. method according to claim 1, it is characterised in that the buffer area of the acquisition idle condition, control DMA controls
Device successively from memory from it is described storage plot position read N rows data to idle condition the buffer area the step of
Including：
The buffer area of idle condition is obtained, dma controller is controlled and is read N rows data to the free time from the position of the storage plot
One of buffer area of state；
Judge whether the data of the picture to be shown read according to the image parameters to finish；
If it is not, first pixel number evidence of N+1 rows is labeled as to deposit plot, and return the slow of the acquisition idle condition
Area is deposited, dma controller is controlled and is read N rows data to one of buffer area of idle condition from the position of the storage plot
The step of.
3. method according to claim 2, it is characterised in that the buffer area of the acquisition idle condition, control DMA controls
Device from it is described storage plot position read N rows data to idle condition one of buffer area the step of include：
The buffer area of idle condition is obtained, dma controller is controlled and is read N rows data to the free time from the position of the storage plot
One of buffer area of state；
The state for housing the buffer area of data is set to busy；
It is described when there is data in detecting buffer area, the data transfer that each buffer area is will be stored in respectively is entered to display screen
The step of row shows includes：
When there is data in detecting buffer area, the data transfer that will be stored in each buffer area is shown to display screen；
The state for completing the buffer area of data transfer is set into the free time.
4. a kind of picture display control unit, it is characterised in that include：Computing module, acquisition module, control module and transmission mould
Block；
The computing module, for calculating the storage plot of picture to be shown according to intended application；
The acquisition module, for obtaining the image parameters of picture to be shown；
The control module, for obtaining the buffer area of idle condition, control dma controller is deposited successively from memory from described
The buffer area for reading N rows data to idle condition is acted in the position for putting plot, and the buffer area at least includes two；
The transport module, for when there is data in detecting buffer area, will be stored in the data of each buffer area respectively
Transmit to display screen and shown.
5. device according to claim 4, it is characterised in that the control module includes：Read module, judge module and
Mark module；
The read module, for obtaining the buffer area of idle condition, control dma controller is from the position of the storage plot
N rows data are read to one of buffer area of idle condition；
The judge module, finishes for judging whether the data of the picture to be shown read according to the image parameters；
The mark module, for when the judged result of the judge module is no, by first pixel number of N+1 rows
According to be labeled as deposit plot.
6. device according to claim 5, it is characterised in that also including setup module, for the institute of data will to be housed
The state for stating buffer area is set to busy, and the state for being additionally operable to the buffer area by data transfer is completed is set to the free time.
7. a kind of microcontroller, it is characterised in that including the picture display control unit described in any one of claim 4 to 6.
8. a kind of electronic cigarette, it is characterised in that including dma controller, Flash chip, display screen and as claimed in claim 7
Microcontroller；The Flash chip and the display screen are connected with the microcontroller by SPI interface；The dma controller
It is connected by system bus with the microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237982.1A CN106648513B (en) | 2016-12-28 | 2016-12-28 | Picture display control method and device, microcontroller and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237982.1A CN106648513B (en) | 2016-12-28 | 2016-12-28 | Picture display control method and device, microcontroller and electronic cigarette |
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| Publication Number | Publication Date |
|---|---|
| CN106648513A true CN106648513A (en) | 2017-05-10 |
| CN106648513B CN106648513B (en) | 2020-06-16 |
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| CN201611237982.1A Active CN106648513B (en) | 2016-12-28 | 2016-12-28 | Picture display control method and device, microcontroller and electronic cigarette |
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Cited By (4)
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| CN110136640A (en) * | 2019-05-16 | 2019-08-16 | 深圳市芯动电子科技有限公司 | A kind of image processing method and system based on holographic display |
| CN112783462A (en) * | 2021-01-19 | 2021-05-11 | 昆山联滔电子有限公司 | Data transmission control method and device |
| CN113369173A (en) * | 2021-06-29 | 2021-09-10 | 上海希翎智能科技有限公司 | Full-automatic plastic bottle color sorting equipment |
| CN113610699A (en) * | 2021-07-19 | 2021-11-05 | 广州致远电子有限公司 | Hardware layer rendering scheduling method, device, equipment and storage medium |
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| CN106648513B (en) | 2020-06-16 |
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