CN111627371A - Electronic product with double display screens - Google Patents
Electronic product with double display screens Download PDFInfo
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- CN111627371A CN111627371A CN202010462945.0A CN202010462945A CN111627371A CN 111627371 A CN111627371 A CN 111627371A CN 202010462945 A CN202010462945 A CN 202010462945A CN 111627371 A CN111627371 A CN 111627371A
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- 230000003993 interaction Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
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Abstract
The invention relates to an electronic product with double display screens, which comprises: the display device comprises a microprocessor, a first display screen control circuit, a first display screen, a second display screen control circuit and a second display screen; the DSI interface and the IIC interface of the microprocessor are connected with a first display screen control circuit, and the first display screen control circuit is connected with a first display screen; the UART interface of the microprocessor is connected with the second display screen control circuit, and the second display screen control circuit is connected with the second display screen. The electronic product with the double display screens provided by the embodiment of the invention uses two different connection modes to simultaneously connect the two display screens, and the two display screens can simultaneously work, so that the man-machine interaction mode can be effectively enriched, more display contents can be provided for users, and the electronic product can be used together with the double touch screens to realize double control of the double screens, thereby facilitating the function expansion of the product.
Description
Technical Field
The invention relates to the technical field of electronic products, in particular to an electronic product with double display screens.
Background
The display screen is one of hardware peripherals and is mainly used for visually providing all information and control parameters to a user in a graphical form. The richer the display content, the more friendly the user experience.
The existing hardware product is generally connected with only one display screen, and the expansion capability of the product is limited by the single display screen; and the existing hardware product has a single interface, and the single interface provides a restrictive condition for a hardware circuit.
Disclosure of Invention
The invention aims to solve the technical problem in the prior art and provides an electronic product with double display screens.
In order to solve the above technical problem, an embodiment of the present invention provides an electronic product with dual display screens, including: the display device comprises a microprocessor, a first display screen control circuit, a first display screen, a second display screen control circuit and a second display screen;
the DSI interface and the IIC interface of the microprocessor are connected with the first display screen control circuit, and the first display screen control circuit is connected with the first display screen; the UART interface of the microprocessor is connected with the second display screen control circuit, and the second display screen control circuit is connected with the second display screen; the microprocessor controls the first display screen through an IIC interface, controls the second display screen through a UART interface, and performs data interaction with the first display screen through a DSI interface; and performing data interaction with the second display screen through a UART interface.
The invention has the beneficial effects that: the electronic product with the double display screens provided by the embodiment of the invention uses two different connection modes to simultaneously connect the two display screens, and the two display screens can simultaneously work, so that the man-machine interaction mode can be effectively enriched, more display contents can be provided for users, and the electronic product can be used together with the double touch screens to realize double control of the double screens, thereby facilitating the function expansion of the product.
Additional aspects of the invention and its advantages will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a circuit structure diagram of an electronic product with dual display screens according to an embodiment of the present invention;
fig. 2 is a circuit connection diagram of a first display screen control circuit according to an embodiment of the present invention;
fig. 3 is a circuit connection diagram of a second display screen control circuit according to an embodiment of the invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a circuit structure diagram of an electronic product with dual display screens according to an embodiment of the present invention. As shown in fig. 1, the product comprises: microprocessor, first display screen control circuit, first display screen, second display screen control circuit and second display screen.
The DSI interface and the IIC interface of the microprocessor are connected with the first display screen control circuit, and the first display screen control circuit is connected with the first display screen; the UART interface of the microprocessor is connected with the second display screen control circuit, and the second display screen control circuit is connected with the second display screen; the microprocessor controls the first display screen through an IIC interface, controls the second display screen through a UART interface, and performs data interaction with the first display screen through a DSI interface; and performing data interaction with the second display screen through a UART interface.
In this embodiment, the microprocessor 300 may employ STM 32. STM32 is a 32-bit microcontroller and microprocessor product based on ARMCortex kernel, which integrates high performance, real-time, digital signal processing, low power consumption, low voltage, and maintains the features of high integration and easy development. Based on an industrial standard processor and a large number of software and hardware development tools, the system becomes a solution for various small and medium-sized projects and complete platforms. An STM32 is used as a core processor of the STM 32-based embedded software platform, hardware control and information interaction are completed by connecting various hardware peripherals, and man-machine interaction of the embedded platform is realized by processing a signal processing program in STM 32. stm32 is an embedded development platform, and is interconnected with the two display screens through different hardware interfaces, and embedded software runs on the embedded development platform to control the two display screens. When the dual-display screen is used, a user can obtain double display information at the same time, the processing performance of the STM32 chip is high, the product can be expanded to be dual-purpose, and a single device can realize the functions of two devices in the prior art.
In the above embodiment, the control mode and process for controlling the first display screen by the first display screen control circuit and the control mode and process for controlling the second display screen by the second display screen control circuit are the same, and for the microprocessor, the two control interfaces and modes are two different, so that the two touch screens can be simultaneously controlled and operated.
The electronic product with the double display screens provided by the embodiment uses two different connection modes to simultaneously connect the two display screens, and the two display screens can simultaneously work, so that the man-machine interaction mode can be effectively enriched, more display contents can be provided for a user, and the electronic product can be jointly used with the double touch screens, thereby realizing double control of the double screens and facilitating the function expansion of the product.
Optionally, in an embodiment, the microprocessor controls the first display screen through an IIC interface and controls the second display screen through a UART interface, including:
the microprocessor configures the first display screen control circuit through the IIC interface according to the parameters of the first display screen, so that the microprocessor controls the first display screen through the first display screen control circuit; and the microprocessor configures the second display screen control circuit through the UART interface according to the parameters of the second display screen, so that the microprocessor controls the second display screen through the second display screen control circuit.
Specifically, the microprocessor may include parameters such as the size of the screen (e.g., 800 × 600), the refresh rate (e.g., 60Hz), line synchronization, field synchronization, etc., according to the configuration of the first display screen control circuit via the IIC interface.
In the embodiment, microprocessor independently controls two display screens respectively through two kinds of hardware control interfaces, has effectively avoided the quantity restriction problem of the same type interface of STM32 chip, and the function extension and the upgrading of software in the STM32 of being convenient for can effectively support a tractor serves two-purpose simultaneously completely independent control mode simultaneously.
Optionally, in an embodiment, the microprocessor performs data interaction with the first display screen through the DSI interface and performs data interaction with the second display screen through the UART interface, and the method includes:
a first display memory area and a second display memory area are divided in the microprocessor; transmitting data in the first display memory to a first display screen through a first display screen control circuit in real time by using a DSI (digital subscriber interface); transmitting data in a second display memory to a second display screen through a second display screen control circuit in real time by utilizing a UART interface; and the main program in the microprocessor updates the display pictures of the first display screen and the second display screen in real time in a memory writing and displaying mode.
In the embodiment, the data interfaces of the two display screens are different in type and completely independent, so that the problem of limitation of the number of the interfaces of the same type of the STM32 chip is effectively solved; the storage area of the display content is divided independently, so that software in STM32 can independently control display pictures in two display screens, the two display screens can display completely different contents simultaneously, the function expansion and the upgrading of the software in STM32 are facilitated, and a machine dual-purpose function can be effectively supported.
Optionally, in an embodiment, the first display screen control circuit employs an SN65DSI display control chip, and the SN65DSI display control chip is connected to the first display screen through an LVDS interface; the second display screen control circuit adopts an H600 display control chip, and the H600 display control chip is connected with the second display screen through an LVDS interface.
Specifically, as shown in fig. 2, the DSI interface of STM32 is connected to the DAOP pin, DAON pin, DA1P pin, DA1N pin, DACP pin, DACN pin, and EN pin of the SN65DSI display control chip, respectively; the IIC interface of the STM32 is respectively connected with the SCL pin and the SDA pin of the SN65DSI display control chip. The REFCLK pin of the SN65DSI display control chip is grounded through a first resistor R1, the ADDR pin is grounded through a second resistor R2, the VCORE pin is grounded through a first capacitor C1, the A _ YOP pin, the A _ YON pin, the A _ Y1P pin, the A _ Y1N pin, the A _ Y2P pin, the A _ Y2N pin, the A _ Y3P pin, the A _ Y3N pin, the A _ CLKP pin and the A _ CLKN pin are respectively connected with corresponding pins of the first display screen.
Specifically, as shown in fig. 3, the UART interface of the STM32 is connected to the TXD0 pin, RXD0 pin, BUSY pin, and BAUDRATE pin of the H600 display control chip, and the YOP pin, YON pin, Y1P pin, Y1N pin, Y2P pin, Y2N pin, Y3P pin, Y3N pin, CLKOUTP pin, and CLKOUTN pin of the H600 display control chip are connected to corresponding pins of the second display screen.
The electronic product with the double display screens provided by the embodiment of the invention realizes the double-screen display function, can quickly and flexibly realize the expansion and upgrade perfection of multifunctional display, expands the market application range of the double display of the embedded software platform and has good social and economic effects.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An electronic product with dual display screens, comprising: the display device comprises a microprocessor, a first display screen control circuit, a first display screen, a second display screen control circuit and a second display screen;
the DSI interface and the IIC interface of the microprocessor are connected with the first display screen control circuit, and the first display screen control circuit is connected with the first display screen; the UART interface of the microprocessor is connected with the second display screen control circuit, and the second display screen control circuit is connected with the second display screen;
the microprocessor controls the first display screen through an IIC interface, controls the second display screen through a UART interface, and performs data interaction with the first display screen through a DSI interface; and performing data interaction with the second display screen through a UART interface.
2. The method of claim 1, wherein the microprocessor controls the first display screen through an IIC interface and the second display screen through a UART interface, comprising:
the microprocessor configures the first display screen control circuit through the IIC interface according to the parameters of the first display screen, so that the microprocessor controls the first display screen through the first display screen control circuit;
and the microprocessor configures the second display screen control circuit through the UART interface according to the parameters of the second display screen, so that the microprocessor controls the second display screen through the second display screen control circuit.
3. The method of claim 1, wherein the microprocessor performs data interaction with a first display screen through a DSI interface and performs data interaction with a second display screen through a UART interface, and comprises:
a first display memory area and a second display memory area are divided in the microprocessor; transmitting data in the first display memory to a first display screen through a first display screen control circuit in real time by using a DSI (digital subscriber interface); transmitting data in a second display memory to a second display screen through a second display screen control circuit in real time by utilizing a UART interface; and the main program in the microprocessor updates the display pictures of the first display screen and the second display screen in real time in a memory writing and displaying mode.
4. The method according to any one of claims 1 to 3, wherein the first display screen control circuit adopts an SN65DSI display control chip, and the SN65DSI display control chip is connected with the first display screen through an LVDS interface; the second display screen control circuit adopts an H600 display control chip, and the H600 display control chip is connected with the second display screen through an LVDS interface.
5. The method of claim 4, wherein the DSI interface of the microprocessor is connected with a DAOP pin, a DAON pin, a DA1P pin, a DA1N pin, a DACP pin, a DACN pin, and an EN pin of an SN65DSI display control chip, respectively; the IIC interface of the microprocessor is respectively connected with an SCL pin and an SDA pin of the SN65DSI display control chip; the REFCLK pin of the SN65DSI display control chip is grounded through a first resistor R1, the ADDR pin is grounded through a second resistor R2, the VCORE pin is grounded through a first capacitor C1, the A _ YOP pin, the A _ YON pin, the A _ Y1P pin, the A _ Y1N pin, the A _ Y2P pin, the A _ Y2N pin, the A _ Y3P pin, the A _ Y3N pin, the A _ CLKP pin and the A _ CLKN pin are respectively connected with corresponding pins of the first display screen.
6. The method as claimed in claim 4, wherein the UART interface of the microprocessor is connected with TXD0 pin, RXD0 pin, BUSY pin and BAUDRATE pin of the H600 display control chip respectively, and YOP pin, YON pin, Y1P pin, Y1N pin, Y2P pin, Y2N pin, Y3P pin, Y3N pin, CLKOTP pin and CLKOTN pin of the H600 display control chip are connected with corresponding pins of the second display screen respectively.
7. A method as claimed in any one of claims 1 to 3 and 5 to 6, wherein the microprocessor employs STM 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010462945.0A CN111627371A (en) | 2020-05-27 | 2020-05-27 | Electronic product with double display screens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010462945.0A CN111627371A (en) | 2020-05-27 | 2020-05-27 | Electronic product with double display screens |
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| CN111627371A true CN111627371A (en) | 2020-09-04 |
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2020
- 2020-05-27 CN CN202010462945.0A patent/CN111627371A/en active Pending
Patent Citations (9)
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| CN102782459A (en) * | 2009-09-11 | 2012-11-14 | 诺沃迪吉特公司 | Method and system for controlling a user interface of a device using human breath |
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