CN211061874U

CN211061874U - Key value dynamic self-display programmable USB keyboard controller

Info

Publication number: CN211061874U
Application number: CN201921872260.2U
Authority: CN
Inventors: 王华明
Original assignee: Seatech Embedded Computer Shanghai Co ltd
Current assignee: Seatech Embedded Computer Shanghai Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-07-21
Anticipated expiration: 2029-11-01

Abstract

A programmable USB keyboard controller with key value dynamic self-display is characterized in that a main controller (1) is respectively connected with a USB interface (2), a UART interface (3), a function key (5), an O L ED button (7) and a one-key self-destruction button (13), the function key (5) is correspondingly provided with a key backlight (6), the one-key self-destruction button (13) is connected with and controls the output of a self-destruction interface (15), the I2C or AD is used for collecting ambient light, 32O L ED buttons are supported, the current key value is displayed on a display screen of each O L ED button, the frequency and duty ratio of PWM output are configured by receiving and reading states of PWM input, I2C or AD collection transmitted by a computer, and the programmable USB keyboard controller is stronger in adaptability, complete in function, safe and reliable and capable of adapting to complex application requirements.

Description

Key value dynamic self-display programmable USB keyboard controller

Technical Field

The utility model belongs to the technical field of the computer control peripheral hardware device, a USB keyboard class product's improvement is related to, especially a key value developments that is applicable to very much industrial computer, military computer and other special needs are from USB keyboard controller able to programme who shows.

Background

The computer USB keyboard is the basic input control equipment commonly used by the current computer, when a user presses a corresponding key, the keyboard feeds back a fixed key value to the computer so as to fulfill the aim of user control, and the keyboard equipment generally has dozens of to more than one hundred keys.

Corresponding improved technology is disclosed, for example, chinese patent application 2017102130639 proposes that a programmable controller for game peripherals is designed by using STM32 single-chip microcomputer, and because its application field is game users, the solution represented by it has the following disadvantages:

1) the function of supporting the O L ED key is not provided, and the key value of the key cannot be dynamically and automatically displayed.

2) Although the device also serves as an output device, the device cannot receive instructions sent by a computer to perform corresponding actions in the using process.

3) Without the necessary PWM output function.

4) Without the necessary AD acquisition function.

5) The function of reminding by mistake is not provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art not enough, providing the stronger USB keyboard controller of customization nature, reinforcing necessary function, but automatic display definition value etc. on the button to be adapted to complex environment industrial computer field special demand.

the utility model aims at realizing through the following technical measure, including main control unit, the USB interface, the UART interface, function button, the button is shaded from the sun, a key self-destruction button, self-destruction button is shaded from the sun, the O L ED button, control the self-destruction interface, I2C or AD acquisition interface, PWM input interface and PWM output interface, main control unit is connected with the USB interface respectively, the UART interface, function button, the O L ED button and a key self-destruction button, the function button corresponds the configuration button and is shaded from the sun, a key self-destruction button corresponds the configuration self-destruction button and is shaded from the sun, simultaneously, a key self-destruction button is connected and is controled the self-destruction interface output, main control unit still connects I2C or AD acquisition interface, PWM input interface and PWM output interface, wherein, I2C or AD acquisition interface and PWM input interface are connected to PWM output interface respectively.

In particular, the host controller has an I/O bi-directional connection with the computer through the USB interface and the UART interface.

In particular, the functional keys comprise 128 key interfaces in a matrix of 2 groups of 8 × 8 controlled by 32 GPIOs, and are configured with corresponding key backlights one by one.

in particular, the oeld buttons include 32 SPI bus control matrix button interfaces.

in particular, the master controller is connected to the O L ED button via the SPI interface.

Particularly, the main controller is connected with a one-key restoring button, the one-key restoring button is correspondingly configured and connected with a restoring button backlight, the one-key restoring button is a GPIO control interface and is defaulted to be a high level, and the one-key restoring button is connected with a UART interface; the main controller is connected with a one-key backup button, the one-key backup button is correspondingly configured and connected with a backup button backlight, and the one-key backup button is a GPIO control interface and is defaulted to be a high level; the one-key backup button is connected with the USB interface.

In particular, the main controller is connected with the photosensitive device interface through an I2C or AD acquisition interface.

Particularly, the main controller is connected with a buzzer.

Particularly, the main controller is connected with the PWRBTN interface, the Watchdog interface and the RST interface, and further the PWRBTN interface, the Watchdog interface and the RST interface are respectively connected with the computer.

In particular, the self-destruction interface is operated to be a GPIO control interface, and the default is high level.

The utility model discloses be applicable to very much industrial computer, military computer and other occasions that need use special USB keyboard.

the utility model has the advantages of, configuration environment photoinduction function can use I2C or AD to gather environment light, through SPI interface connection main control unit, support 32O L ED buttons, realize showing own current key value on the display screen of every O L ED button, simultaneously, through receiving the PWM input that reads the computer and transmit, frequency and the duty cycle that PWM output were configured to the state that I2C or AD gathered, adaptability is stronger, the function is perfect, safety and reliability, adapt to complicated application demand.

Drawings

Fig. 1 is a schematic diagram of the connection structure of the functional modules of the present invention.

FIG. 2 is a schematic diagram illustrating an embodiment of a comparison between an anti-jitter switching timing and a conventional switching timing.

The reference numerals include:

1-main controller, 2-USB interface, 3-UART interface, 4-computer, 5-function key, 6-key backlight, 7-O L ED button, 8-SPI interface, 9-one-key restore button, 10-restore button backlight, 11-one-key backup button, 12-backup button backlight, 13-one-key self-destruction button, 14-self-destruction button backlight, 15-operation self-destruction interface, 16-I2C/AD acquisition interface, 17-photosensitive device interface, 18-PWM input interface, 19-PWM output interface, 20-buzzer, 21-PWRBTN interface, 22-Waltdog interface and 23-RST interface.

Detailed Description

The utility model discloses the principle lies in, through USB interface 2 connection computer 4, main control unit 1 receives the instruction that computer 4 transmitted through UART interface 3, and permanent save and execution, this procedure set main control unit 1 to USB keyboard controller and be used for configuring self procedure or realize multiple functions according to the instruction.

The utility model discloses the abbreviation of well part name includes:

PWM: the abbreviation Pulse Width Modulation means Pulse Width Modulation.

A computer: i.e., the common acronym for electronic computers including supercomputers, industrial control computers, network computers, personal computers, embedded computers, and the like.

USB: i.e., the abbreviation of Universal Serial Bus, means Universal Serial Bus.

UART: the abbreviation of Universal Asynchronous Receiver/Transmitter means Universal Asynchronous Receiver/Transmitter.

GPIO: i.e., the abbreviation of General Purpose Input Output, means General Purpose Input/Output.

SPI: i.e., Serial Peripheral Interface, means a Serial Peripheral Interface bus.

I2C: i.e., the abbreviation Inter-Integrated Circuit, meaning the I2C bus.

OlED button, an abbreviation of Organic L light-Emitting Diode button, means a button device with an O L ED display screen.

And (3) AD acquisition: the abbreviation of analog-to-digital acquisition, means analog acquisition.

PWRBTN: i.e., the acronym for powerbutton, refers to a computer Power switch (Power SW) button.

RST: i.e., the abbreviation of reset, means that the computer resets and restarts the button.

watchdog: i.e., watchdog, means a consistent monitoring class of hardware or software that periodically monitors the computer and triggers a restart of the computer 4 when the computer 4 is malfunctioning.

the utility model discloses a main control unit 1, USB interface 2, UART interface 3, function button 5, button 6 in a poor light, O L ED button 7 a key self-destruction button 13, self-destruction button 14 in a poor light, control self-destruction interface 15, I2C or AD acquisition interface 16, PWM input interface 18 and PWM output interface 19.

The present invention will be further explained with reference to the drawings and examples.

embodiment 1 as shown in fig. 1, a main controller 1 is respectively connected with a USB interface 2, a UART interface 3, a function key 5, an O L ED button 7, and a one-key self-destruction button 13, the function key 5 is correspondingly provided with a key backlight 6, the one-key self-destruction button 13 is correspondingly provided with a self-destruction button backlight 14, the one-key self-destruction button 13 is connected with an operation self-destruction interface 15 for output, the main controller 1 is further connected with an I2C or an AD acquisition interface 16, a PWM input interface 18, and a PWM output interface 19, wherein the I2C or the AD acquisition interface 16 and the PWM input interface 18 are respectively connected with the PWM output interface 19.

In the foregoing, the host controller 1 has an I/O bi-directional connection with the computer 4 via the USB interface 2 and the UART interface 3.

In the foregoing, the function key 5 includes 128 key interfaces in 2 groups 8 × 8 matrix controlled by 32 GPIOs, and the corresponding key backlights 6 are configured one by one.

in the foregoing, the oeld buttons 7 include 32 SPI bus control matrix button interfaces.

in the foregoing, the main controller 1 is connected to the oeld button 7 through the SPI interface 8.

In the foregoing, the main controller 1 is connected to a one-key reset button 9, the one-key reset button 9 is correspondingly configured and connected to a reset button backlight 10, the one-key reset button 9 is a GPIO control interface and is default to a high level, and the one-key reset button 9 is connected to the UART interface 3.

In the foregoing, the main controller 1 is connected to a one-key backup button 11, the one-key backup button 11 is correspondingly configured and connected to a backup button backlight 12, and the one-key backup button 11 is a GPIO control interface and defaults to a high level; the one-key backup button 11 is connected to the USB interface 2.

In the foregoing, the main controller 1 is connected to the photosensor interface 17 through I2C or the AD acquisition interface 16.

In the foregoing, the main controller 1 is connected to the buzzer 20.

The main controller 1 is connected to the PWRBTN interface 21, the Watchdog interface 22, and the RST interface 23, and further, the PWRBTN interface 21, the Watchdog interface 22, and the RST interface 23 are connected to the computer 4, respectively.

In the foregoing, the operation self-destruction interface 15 is a GPIO control interface, and is set to a high level by default.

The embodiment of the utility model provides an in, USB interface 2 is used for realizing the function of USB keyboard, and simultaneously, USB interface 2, UART interface 3 are used for sending and receiving data instruction between main control unit 1 and the computer 4. The photosensitive device interface 17 is used for connecting a photosensitive device, the PWM input interface 18 is used for connecting a PWM input signal, the PWM output interface 19 is used for connecting a PWM output signal, the Watchdog interface 22 is used for monitoring the running state of the computer 4 to realize a Watchdog function, the PWRBTN interface 21 is used for connecting an on-off switch of the computer 4, and the RST interface 23 is used for connecting a reset switch of the computer 4.

In the embodiment of the present invention, the function key 5 can be defined as 128 key values at maximum, each key value can be configured separately, and the occurrence of repeated key is allowed. The 128 key backlights 6 corresponding to the maximum 128 definable values of the function keys 5 can be controlled by reading the state of the ambient light of the I2C or the AD acquisition 16 acquisition interface 16, and the backlight control switching process and effect, as shown in fig. 2, has an anti-shake switching timing function to prevent the backlight flicker caused by the ambient light flicker from affecting the visual effect. Wherein:

According to the conventional switching sequence, the common light control system adopts l _lowAnd l _highTwo illumination values are used as threshold values for analog switching when the ambient illumination is around the threshold values Near variation, control jitter will be induced. In the embodiment, the anti-shake switching time sequence introduces the hysteresis delta on the basis of the original two-point threshold value _lowAnd Δ _highTaking the night/evening mode as an example, when the current mode is at night, the ambient illumination is increased to l _low+Δ_lowThe method can be switched to evening; when the current mode is evening, the ambient illumination is reduced to l _low-Δ_lowThe user can switch to the night.

1) Simulating the illumination of the environment in the daytime, at night and at night by using the states of full-on, half-on and full-off of the lamp, counting the illumination values in each mode, and selecting l according to the illumination values _lowAnd l _high；

2) Let Delta be _low＝l_low×10％，Δ_high＝l_high× 10%, the software realizes a debounce algorithm and checks the effectiveness, and relevant parameters are optimized through repeated tests.

the embodiment of the utility model provides an in, support external 32O L ED button 7, can realize showing own current key value on the display screen of every O L ED button 32O L ED button 7 can realize showing own current key value on the display screen of every O L ED button 7. and carry out the piece by 32 GPIO as the CS signal and select, the key value of every button can all be configured, and can realize showing own current key value on the display screen of every O L ED button, use 128 key functions still 32O L ED functions, it is optional in computer end software, and can be configured.

In the embodiment of the present invention, the linkage buzzer 20 can be triggered by the single configuration of the one-key restore button 9, the one-key backup button 11, and the self-destruction button 13.

The embodiment of the utility model provides an in, the function of all configurations can all cooperate the execution to accomplish through computer end configuration software, and all button positions above the software key interface can all drag or delete. Or other serial port transceiving programs can be used for replacing computer-side configuration software according to the format in the protocol, and all configurable functions can be configured.

In the embodiment of the present invention, the backlight can be configured and controlled independently by the back-up button backlight 10, the back-up button backlight 12 and the self-destruction button backlight 14; meanwhile, the function of ambient light sensing is supported, the ambient light can be collected by using the I2C or the AD collection interface 16, and the collected value can be used as a basis for controlling the 128 key backlights 6 and the PWM output interface 19. The I2C or AD collection interface 16 collects ambient light, and the collected values can be used as a basis for controlling the 128 key backlights 6 and the PWM output interface 19. The interface of the photosensitive device interface 17 acquires control signals by using I2C or AD, which is selectable in computer software, and the light intensity value read by the photosensitive device from the darkest to the brightest is automatically and averagely divided into 100 light intensity value grades, wherein the darkest is 1 percent, and the brightest is 100 percent. The main controller uses the 100 photometric levels to make corresponding use according to the user configuration.

The embodiment of the utility model provides an in, set up a key and restore button 9, a key backup button 11, a key self-destruction button 13, conveniently realize the swift operation of complicated senior management. Wherein, the function of operating the self-destruction interface 15 is effective after the one-key self-destruction button 13 is pressed to be effective, so as to realize the purpose of self-destruction; when the one-key self-destruction button 13 is pressed down, the configurable acousto-optic reminding function is achieved. When the one-key self-destruction button 13 is not pressed down, the corresponding GPIO level is pulled down, the self-destruction button backlight 14 starts to flicker at an accelerated frequency until the set effective duration is changed into normal brightness, the buzzer 20 performs droplet ringing at the accelerated frequency until the set effective duration is changed into long sound, and the acousto-optic reminding is automatically turned off after the self-destruction operation is completed. When the button is pressed for a period of time equal to a set period of time, the button is effective, the main controller starts to output and operate the GPIO corresponding to the self-destruction to set the period of time for second at low level, if the main controller is powered off within the set period of time for second, then when power is supplied again later, the main controller can think that the previous self-destruction operation is less than the set period of time for second, does not finish the self-destruction operation, and can continue to carry out the self-destruction operation again within the set period of time for second until the self-destruction operation within. If the button is released before the set time length is not reached after being pressed, the button is regarded as mistouch operation, and the current operation is cancelled. The acousto-optic reminding function can be configured and can be independently closed.

The embodiment of the utility model provides an in, the keyboard supports PWM input/output function, can receive the PWM signal that computer 4 transmitted, and the value of gathering can be used for as the basis of PWM output. The PWM input interface 18 receives the PWM signal from the computer 4, and the collected value can be used as the basis for PWM output. The PWM input interface 18 is 1 GPIO interface, and can receive the PWM signal transmitted from the computer 4, and the read PWM input value is automatically and evenly divided into 100 levels according to the duty ratio, with the lowest (low level) being 0% and the highest (high level) being 100%. The collected values can be used as a basis for PWM output. Meanwhile, the keyboard supports a PWM output function, and the frequency and the duty ratio of the PWM output can be configured by reading the states of the PWM input interface 18, the I2C or the AD acquisition interface 16. The PWM output interface 19 reads the state of the PWM input interface 18, I2C or the AD acquisition interface 16 to configure the frequency and duty cycle of the PWM output. The PWM output interface 19 is 1 GPIO interface, can read the PWM input, I2C or AD state of gathering to dispose PWM output, and output frequency and duty cycle are configurable. When the computer software selects manual backlighting, the PWM outputs as a percentage of the manual setting, ignoring the values of the photosensor and PWM inputs. When the computer software selects automatic backlight, the PWM outputs according to the luminosity value grade currently collected by the photosensitive device and the duty ratio currently collected by the PWM input 18, and the computer 4 software can be configured without adding the duty ratio currently collected by the PWM input 18.

The embodiment of the utility model provides an in, the flange supports the Watchdog function through Watchdog interface 22, will trigger the Watchdog function to take effect when computer 4 does not feed the dog, makes computer 4 restart that resets. When the computer 4 does not feed dogs, the watchdog function is triggered to take effect, so that the computer 4 is reset and restarted. The Watchdog interface 22 is connected to the GPIO of the computer to monitor the state of the computer in real time. The computer 4 needs to continuously run the dog feeding software, dog feeding is carried out according to the set time, and when the computer 4 does not carry out dog feeding operation within the set time, the main controller 1 determines that the computer 4 is abnormal in work and can carry out reset or power-off and power-on operations on the computer according to the set mode. The waiting time for feeding dogs and the processing mode of not feeding dogs after time-out can be configured. The keyboard supports the functions of controlling the computer 4 to be turned on and off and reset through the RST interface 23. When the computer 4 is in a power-off state and does not support the power-on of the USB device or the power-on function of the USB device is not started, the main controller 1 can be used to implement the power-on and power-off or reset of the functional device provided by the main controller 1 as long as the main controller 1 is working. The on/off or reset can be realized by the functional device provided in the main controller 1. The on-off function is connected with the on-off button interface of the computer through PWRBTN 21, and the reset function is connected with the reset interface of the computer 4 through RST interface 23. The functions of controlling the computer 4 to be turned on and off and reset are supported. When the computer 4 is in a power-off state and does not support the power-on of the USB device or the power-on function of the USB device is not started, the host controller 1 can be used to switch on or off or reset the computer 4 by using the functional device of the host controller 1 as long as the host controller 1 is working.

In the embodiment of the present invention, the buzzer 20 has the sound and light reminding function, and the state of the buzzer 20 after the one-key restoring button 9, the one-key backup button 11, and the self-destruction button 13 are pressed can be configured independently. When the one-key reset button 9 is not pressed down, the corresponding GPIO level is pulled down, the reset button backlight 10 starts to flicker at an accelerated frequency until the set effective duration is changed into a normally bright state, the buzzer 20 performs droplet ringing at the accelerated frequency until the set effective duration is changed into a long-period ringing state, and the audible and visual reminding is automatically turned off after the reset operation is completed. When the button is pressed for a period of time equal to the set period of time, the button takes effect, the main controller 1 starts to output a reduction instruction by the USB/UART, the computer 4 starts to execute the reduction operation after receiving the reduction instruction, and the USB/UART replies the received instruction to the main controller. If the button is released before the set time length is not reached after being pressed, the button is regarded as mistouch operation, and the current operation is cancelled. The acousto-optic reminding function can be configured and can be independently closed. When the one-key backup button 11 is pressed, a configurable acousto-optic reminding function is provided. When the one-key backup button 11 is not pressed down, the corresponding GPIO level is pulled down, the backlight 12 of the backup button starts to flash at a gradually-increased frequency until the set effective duration is changed into a normally-on state, the buzzer 20 performs droplet ringing at the gradually-increased frequency until the set effective duration is changed into a long-on state, and the audible and visual reminding is automatically turned off after the backup operation is completed. When the button is pressed for a time length equal to the set time length, the button takes effect, the main controller 1 starts to output a backup instruction by the USB/UART, the computer 4 starts to execute the backup operation after receiving the backup instruction, and the USB/UART replies the received instruction to the main controller 1. If the button is released before the set time length is not reached after being pressed, the button is regarded as mistouch operation, and the current operation is cancelled. The acousto-optic reminding function can be configured and can be independently closed.

In the embodiment of the present invention, when the host controller 1 operates for the first time, the host controller receives the program transmitted from the computer 4 through the UART interface 3, and stores and executes the program permanently. The program sets the main controller 1 as a USB keyboard controller and connects with the computer 4 through the USB interface 2 to realize the function of the common USB keyboard; when the host controller 1 is used again later, the host controller 1 sends and receives instructions of the computer 4 through the USB interface 2 and the UART interface 3 to configure its own program or implement a certain function according to the instructions.

Claims

1. A key value dynamic self-display programmable USB keyboard controller comprises a main controller (1), a USB interface (2), a UART interface (3), a function key (5), a key backlight (6), a one-key self-destruction button (13), a self-destruction button backlight (14), an O L ED button (7), a control self-destruction interface (15), an I2C or AD acquisition interface (16), a PWM input interface (18) and a PWM output interface (19), and is characterized in that the main controller (1) is respectively connected with the USB interface (2), the UART interface (3), the function key (5), the O L ED button (7) and the one-key self-destruction button (13), the function key (5) is correspondingly provided with the key backlight (6), the one-key self-destruction button (13) is correspondingly provided with the self-destruction button backlight (14), meanwhile, the one-key self-destruction button (13) is connected with the control self-destruction interface (15) for output, the main controller (1) is also connected with an I2C or AD acquisition interface (16), the PWM input interface (18) and the PWM output interface (2C), and the I2 or AD acquisition interface (18) is respectively connected with the PWM output interface (19).

2. The programmable USB keyboard controller for dynamic self-display of key values according to claim 1, characterized in that the main controller (1) has an I/O bi-directional connection to the computer (4) through the USB interface (2) and the UART interface (3).

3. The programmable USB keyboard controller of claim 1, wherein the function keys (5) comprise 128 key interfaces in 2 groups 8x8 matrix for 32 GPIO control and are configured with corresponding key backlights (6) one by one.

4. the programmable USB keyboard controller of claim 1, wherein the oeld buttons (7) comprise 32 SPI bus control matrix button interfaces.

5. the programmable USB keyboard controller for dynamic self-display of key values according to claim 1, characterized by the main controller (1) connected to the oeld buttons (7) through the SPI interface (8).

6. The programmable USB keyboard controller of claim 1, wherein the main controller (1) is connected to a key recovery button (9), the key recovery button (9) is correspondingly configured to be connected to a recovery button backlight (10), the key recovery button (9) is a GPIO control interface, default is high level, and the key recovery button (9) is connected to the UART interface (3); the main controller (1) is connected with a one-key backup button (11), the one-key backup button (11) is correspondingly configured and connected with a backup button backlight (12), and the one-key backup button (11) is a GPIO control interface and is defaulted to a high level; the one-key backup button (11) is connected with the USB interface (2).

7. The programmable USB keyboard controller for dynamic self-display of key values according to claim 1, characterized in that the main controller (1) is connected to the photosensor interface (17) through I2C or AD acquisition interface (16).

8. A programmable USB keyboard controller with dynamic self-display of key values according to claim 1, characterized by a buzzer (20) connected to the main controller (1).

9. The key-value dynamic self-displaying programmable USB keyboard controller according to claim 1, wherein the main controller (1) is connected to the PWRBTN interface (21), the Watchdog interface (22), and the RST interface (23), and further, the PWRBTN interface (21), the Watchdog interface (22), and the RST interface (23) are respectively connected to the computer (4).

10. The programmable USB keyboard controller for dynamic self-display of key values according to claim 1, characterized in that the manipulation self-destruction interface (15) is a GPIO control interface, defaulted to high level.