CN108399136B - Control method and device of serial interface and host - Google Patents
Control method and device of serial interface and host Download PDFInfo
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- CN108399136B CN108399136B CN201810162640.0A CN201810162640A CN108399136B CN 108399136 B CN108399136 B CN 108399136B CN 201810162640 A CN201810162640 A CN 201810162640A CN 108399136 B CN108399136 B CN 108399136B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
- G06F13/124—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
Abstract
The invention is suitable for the technical field of communication, and provides a control method, a device and a host of a serial interface, wherein the control method of the serial interface comprises the following steps: sending data to external equipment through the serial interface, and monitoring response data sent by the external equipment; if the response data is monitored within the preset time, continuing to communicate with the external equipment according to a serial port communication protocol; and if the response data is not monitored within the preset time, taking the serial interface as an input interface for receiving an input instruction of the external equipment. The invention can control the use of the serial interface according to the response of the external equipment, thereby being compatible with various external equipment, improving the utilization rate of resources and having stronger usability and practicability.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for controlling a serial interface, a host, and a computer-readable storage medium.
Background
In electronic products, each interface is usually independent, various external devices are compatible by adopting an interactive interface mode, and the expansion interface which is not used temporarily is always in an idle state, so that the I/O resources are greatly occupied.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, an apparatus, and a host for controlling a serial interface, which can control the use of the serial interface according to the response of an external device, so as to be compatible with multiple external devices and improve the utilization rate of resources.
A first aspect of an embodiment of the present invention provides a method for controlling a serial interface, where a host includes a serial interface, and the host is connected to an external device through the serial interface, and the method includes:
sending data to external equipment through the serial interface, and monitoring response data sent by the external equipment;
if the response data is monitored within the preset time, continuing to communicate with the external equipment according to a serial port communication protocol;
and if the response data is not monitored within the preset time, taking the serial interface as an input interface for receiving an input instruction of the external equipment.
A second aspect of an embodiment of the present invention provides a control device for a serial interface, including:
the sending module is used for sending data to the external equipment through the serial interface and monitoring response data sent by the external equipment;
the first processing module is used for continuing to communicate with the external equipment according to a serial port communication protocol if the response data is monitored within the preset time;
and the second processing module is used for taking the serial interface as an input interface to receive an input instruction of the external equipment if the response data is not monitored within the preset time.
A third aspect of an embodiment of the present invention provides a host, including: comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to the first aspect when executing the computer program.
A fourth aspect of an embodiment of the present invention provides a computer-readable storage medium, including: the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the method as mentioned in the first aspect above.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the embodiment sends data to the external device through the serial interface and monitors response data sent by the external device; if the response data is monitored within the preset time, continuing to communicate with the external equipment according to a serial port communication protocol; and if the response data is not monitored within the preset time, taking the serial interface as an input interface for receiving an input instruction of the external equipment. Through the embodiment of the invention, the use of the serial interface can be controlled according to the monitored response of the external equipment, so that the serial interface is compatible with various external equipment, the utilization rate of resources is improved, and the serial interface has stronger usability and practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a control method of a serial interface according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a control device of a serial interface according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a host according to a third embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted depending on the context to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
It should be understood that, the sequence numbers of the steps in this embodiment do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation on the implementation process of the embodiment of the present invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example one
Fig. 1 is a schematic flowchart of a control method for a serial interface according to an embodiment of the present invention, where the method includes the following steps:
s101: and sending data to the external equipment through the serial interface, and monitoring response data sent by the external equipment.
The Serial Interface (Serial Interface), referred to as a Serial port for short, is also called a Serial communication Interface or a Serial communication Interface (generally referred to as a COM Interface), is an extended Interface adopting a Serial communication mode, and data can be sequentially transmitted bit by bit through the Serial Interface.
Optionally, the serial communication protocol includes: r232 serial port communication protocol.
Optionally, the host includes: the wireless control system comprises a wireless control module, a power circuit, a driving circuit, a serial interface circuit and a memory, wherein a first end of the wireless control module is connected with the power circuit, a second end of the wireless control module is connected with the driving circuit, a third end of the wireless control module is connected with the serial interface circuit, and a fourth end of the wireless control module is connected with the memory; the first end of the power supply circuit is connected with an external power supply, and the second end of the power supply circuit is connected with the wireless control module; the first end of the driving circuit is connected with the wireless control module, and the second end of the driving circuit is connected with a load; the first end of the serial interface circuit is connected with the wireless control module, the second end of the serial interface circuit is connected with external equipment, the load comprises a dimmer, and the external equipment comprises serial port communication equipment or a mechanical key switch.
Furthermore, the wireless control module is a control module supporting a Z-Wave wireless communication protocol, and the serial communication equipment comprises a serial touch panel, a serial console, a computer and the like. The serial port touch panel can be of various types, so that a user can flexibly select the serial port touch panel according to needs.
It should be understood that, when the external device is a computer, the external device may be used for communicating with the host, and may also be used for debugging codes generated by the serial interface in the burning upgrade process.
It should be further understood that when the external device is a serial touch panel in a serial communication device, the serial touch panel may communicate with the host according to a serial communication protocol, and may control the host through the serial touch panel. When the host communicates with the external device through the serial port communication protocol, the host can receive a control instruction sent by the external device, so as to execute corresponding operation.
It should be further understood that, when the external device is a serial touch panel, since there are usually a plurality of keys on the serial touch panel, the host may be used as a remote controller to control other devices through the serial touch panel, thereby achieving the purpose of controlling a plurality of devices in a correlated manner.
Optionally, the host sends data to the external device through the serial interface when the host is powered on for the first time, and monitors response data sent by the external device.
S102: and if the response data is monitored within the preset time, continuing to communicate with the external equipment according to the serial port communication protocol.
It should be understood that, when the external device is any one of serial communication devices, after receiving the data sent by the host, the external device will respond to the data within a preset time to prompt the host that the serial communication device has received the data, and can establish a connection and perform communication.
S103: and if the response data is not monitored within the preset time, taking the serial interface as an input interface for receiving an input instruction of the external equipment.
It should be understood that when the external device is a mechanical key switch, the data sent by the host cannot be responded within a preset time.
Optionally, if the response data is not monitored within a preset time, all resistors at the serial interface are set to be in a pull-up mode, and the pull-up mode is used as an input interface for receiving an input instruction of the external device.
It should be noted that, if the response data is not received within the preset time, the serial interface is used as an input interface, the data pin of the serial interface is in a high level state by setting all the resistors at the serial interface to be in a pull-up mode, and when the key of the mechanical key switch is pressed, the level at the data pin of the serial interface is changed from the high level to the low level, and a host startup instruction is executed.
In the embodiment of the invention, data are sent to external equipment through the serial interface, response data sent by the external equipment are monitored, and if the response data are monitored within preset time, the communication with the external equipment is continued according to a serial communication protocol; and if the response data is not monitored within the preset time, taking the serial interface as an input interface for receiving an input instruction of the external equipment. The embodiment of the invention realizes that a plurality of external devices share one serial interface by controlling the serial interface, and the host can be controlled by any one external device, thereby improving the utilization rate of resources and having stronger usability and practicability.
Example two
Fig. 2 is a schematic structural diagram of a control device of a serial interface according to a second embodiment of the present invention, and for convenience of description, only the parts related to the second embodiment of the present invention are shown.
The host communication device can be a software unit, a hardware unit or a combination unit of software and hardware which are built in the host, and can also be integrated into the host as an independent pendant.
The host communication device comprises:
a sending module 21, configured to send data to an external device through the serial interface, and monitor response data sent by the external device;
the first processing module 22 is configured to continue to communicate with the external device according to a serial communication protocol if the response data is monitored within a preset time;
the second processing module 23 is configured to, if the response data is not monitored within a preset time, use the serial interface as an input interface for receiving an input instruction of the external device.
Wherein, the external device comprises a serial communication device or a mechanical key switch.
Optionally, the sending module 21 is specifically configured to:
and when the power is firstly powered on, sending data to the external equipment through the serial interface, and monitoring response data sent by the external equipment.
Optionally, the second processing module 23 is specifically configured to:
and if the response data is not monitored within the preset time, setting all resistors at the serial interface to be in a pull-up mode to serve as an input interface for receiving an input instruction of the external equipment.
EXAMPLE III
Fig. 3 is a schematic structural diagram of a host according to a third embodiment of the present invention. As shown in fig. 3, the host 3 of this embodiment includes: a processor 30, a memory 31 and a computer program 32 stored in said memory 31 and executable on said processor 30. The processor 30, when executing the computer program 32, implements the steps of the first embodiment of the methods described above, such as the steps S101 to S103 shown in fig. 1. The processor 30, when executing the computer program 32, implements the functions of the various modules/units in the above-described apparatus embodiments, such as the functions of the modules 21 to 23 shown in fig. 2.
Illustratively, the computer program 32 may be partitioned into one or more modules/units that are stored in the memory 31 and executed by the processor 30 to implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 32 in the host 3. For example, the computer program 32 may be divided into a sending module, a first processing module and a second processing module, and each module has the following specific functions:
the sending module is used for sending data to the external equipment through the serial interface and monitoring response data sent by the external equipment;
the first processing module is used for continuing to communicate with the external equipment according to a serial port communication protocol if the response data is monitored within the preset time;
and the second processing module is used for taking the serial interface as an input interface to receive an input instruction of the external equipment if the response data is not monitored within the preset time.
The host 3 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The host may include, but is not limited to, a processor 30, a memory 31. Those skilled in the art will appreciate that fig. 3 is merely an example of a host 3 and does not constitute a limitation of the host 3 and may include more or fewer components than shown, or some components in combination, or different components, e.g., the host may also include input output devices, network access devices, buses, etc.
The Processor 30 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 31 may be an internal storage unit of the host 3, such as a hard disk or a memory of the host 3. The memory 31 may also be an external storage device of the host 3, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the host 3. Further, the memory 31 may also include both an internal storage unit of the host 3 and an external storage device. The memory 31 is used for storing the computer program and other programs and data required by the host. The memory 31 may also be used to temporarily store data that has been output or is to be output.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art would appreciate that the modules, elements, and/or method steps of the various embodiments described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or straight coupling or communication connection may be through some ports, intermediate coupling or communication connection of devices or units, and may be in electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, etc. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A control method of a serial interface is applied to a host, the host comprises a serial interface, and the host is connected with an external device through the serial interface, and the method comprises the following steps:
sending data to external equipment through the serial interface, and monitoring response data sent by the external equipment;
if the response data is monitored within the preset time, continuing to communicate with the external equipment according to a serial port communication protocol;
if the response data is not monitored within the preset time, taking the serial interface as an input interface for receiving an input instruction of the external equipment;
the host executes corresponding operation by receiving the control instruction sent by the external equipment;
the external equipment comprises serial communication equipment or a mechanical key switch;
if the response data is not monitored within the preset time, the serial interface is used as an input interface, and the receiving of the input instruction of the external device includes: if the response data is not received within the preset time, the serial interface is used as an input interface, the data pin of the serial interface is in a high level state by setting all resistors at the serial interface to be in a pull-up mode, and when the key of the mechanical key switch is pressed, the level at the data pin of the serial interface is changed from the high level to the low level, and a host computer starting instruction is executed.
2. The method of claim 1, wherein sending data to an external device via the serial interface and listening for response data sent by the external device comprises:
and when the power is firstly powered on, sending data to the external equipment through the serial interface, and monitoring response data sent by the external equipment.
3. The method of claim 1, wherein the serial communication protocol comprises: r232 serial port communication protocol.
4. A serial interface control apparatus, applied to a host, the host including a serial interface, the host being connected to an external device through the serial interface, the apparatus comprising:
the sending module is used for sending data to the external equipment through the serial interface and monitoring response data sent by the external equipment;
the first processing module is used for continuing to communicate with the external equipment according to a serial port communication protocol if the response data is monitored within the preset time;
the second processing module is used for taking the serial interface as an input interface to receive an input instruction of the external equipment if the response data is not monitored within a preset time;
the host executes corresponding operation by receiving the control instruction sent by the external equipment;
the external equipment comprises serial communication equipment or a mechanical key switch;
the second processing module is specifically configured to:
if the response data is not received within the preset time, the serial interface is used as an input interface, the data pin of the serial interface is in a high level state by setting all resistors at the serial interface to be in a pull-up mode, and when the key of the mechanical key switch is pressed, the level at the data pin of the serial interface is changed from the high level to the low level, and a host computer starting instruction is executed.
5. The apparatus of claim 4, wherein the sending module is specifically configured to:
and when the power is firstly powered on, sending data to the external equipment through the serial interface, and monitoring response data sent by the external equipment.
6. A host comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 3 when executing the computer program.
7. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 3.
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| CN109993265A (en) * | 2019-04-01 | 2019-07-09 | 钱咸升(北京)网络科技股份公司 | A kind of key control device, device and method |
| CN113127287A (en) * | 2019-12-31 | 2021-07-16 | 北京车和家信息技术有限公司 | Processor control method and device and electronic equipment |
| CN111552492A (en) * | 2020-04-22 | 2020-08-18 | 深圳宝龙达信创科技股份有限公司 | Upgrading device, method, system, terminal equipment and medium of embedded controller |
| CN113094305B (en) * | 2021-04-02 | 2024-03-26 | 北京黑蚁兄弟科技有限公司 | Asynchronous communication processing method, device and storage medium |
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| CN102902653A (en) * | 2012-10-09 | 2013-01-30 | 天津市松正电动汽车技术股份有限公司 | Serial communication protocol for controller |
| CN104317765A (en) * | 2014-10-20 | 2015-01-28 | 成都广达电子股份有限公司 | Serial communication based one-to-many communication system and implementation method |
| CN106569976A (en) * | 2016-11-16 | 2017-04-19 | 深圳拓邦股份有限公司 | Serial port communication system and communication method |
| CN107329924A (en) * | 2017-07-21 | 2017-11-07 | 宇龙计算机通信科技(深圳)有限公司 | A kind of data interaction system and method |
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| US20170168971A1 (en) * | 2015-12-15 | 2017-06-15 | Intel IP Corporation | Re-enumerating media agnostic devices |
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| CN102902653A (en) * | 2012-10-09 | 2013-01-30 | 天津市松正电动汽车技术股份有限公司 | Serial communication protocol for controller |
| CN104317765A (en) * | 2014-10-20 | 2015-01-28 | 成都广达电子股份有限公司 | Serial communication based one-to-many communication system and implementation method |
| CN106569976A (en) * | 2016-11-16 | 2017-04-19 | 深圳拓邦股份有限公司 | Serial port communication system and communication method |
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