WO2019037188A1 - METHOD FOR MODE SWITCHING AN INTEGRATED DEVICE AND INTEGRATED DEVICE - Google Patents

Abstract

A mode switching method of an embedded device (100) and the embedded device (100). The embedded device (100) comprises: a first interface (1) connected to an embedded processor; a second interface (2) exposed to the outside of the embedded device (100); a switching circuit (4), the first interface (1) and the second interface (2) being of the same type; a mode flag bit setting module (6) used for setting the mode flag bit to be an engineering mode flag/user mode flag in response to a command for switching to an engineering mode/switching to a user mode; and a mode switching control module (5) used for switching the embedded device (100) to the engineering mode and switching the switching circuit (4) to connect to the second interface (2) and a debugging interface (3) of the embedded processor in response to setting the mode flag bit as the engineering mode flag, and switching the embedded device (100) to the user mode and switching the switching circuit (4) to connect to the first interface (1) and the second interface (2) in response to setting the mode flag bit as the user mode flag.

Description

Mode switching method and embedded device of embedded device Technical field

The present invention relates to the field of computer technologies, and in particular, to a mode switching method for an embedded device and an embedded device.

Background technique

With the advent of the intelligent era, embedded systems have been widely used in various fields. The people who use the embedded system are mainly divided into two categories, one is to develop test and maintenance personnel, and the other is ordinary users. The former needs to enter the engineering mode, which allows you to view the system's debugging information and perform a comprehensive functional configuration test. The latter does not require the development and debugging of the system, only need to enter the user mode.

In the prior art, the embedded device has only a user mode after being assembled, and the debugging interface for the embedded system has been blocked. If there is a need for debugging of the embedded system, it is usually necessary to disassemble the embedded device. inconvenient. Therefore, it is necessary to provide a mode switching scheme for the embedded device, which is convenient for the development test and maintenance personnel to debug and test the embedded device that has been assembled by the whole machine.

Summary of the invention

The object of the present invention is to provide a mode switching scheme for an embedded device, which is convenient for developing test and maintenance personnel to perform debugging tests on an embedded device that has been assembled by the whole device.

According to a first aspect of the present invention, there is provided a mode switching method of an embedded device, the device comprising a first interface connected to an embedded processor of the device, a second interface exposed to the outside of the device, and a switch The circuit, the first interface and the second interface are the same type of interface; the method includes the following steps:

The mode flag is set to an engineering mode flag in response to a command to switch to the engineering mode;

Responsive to the mode flag being set to an engineering mode flag, switching the device to an engineering mode and switching the switching circuit to connect the second interface and the embedded processor Debug interface

and / or,

Setting the mode flag to the user mode flag in response to a command to switch to the user mode;

In response to the mode flag being set to a user mode flag, the device is switched to a user mode and the switching circuit is switched to connect the first interface and the second interface.

Optionally, the method further includes the following steps:

When the device is started, the boot flag is initialized to a boot incomplete flag, and the mode flag is initialized to a user mode flag; wherein the device is configured to be disabled when the boot flag is a boot unfinished flag The mode flag is set to an engineering mode flag; and,

When the device is booted, the boot flag is set to a boot completion flag.

Optionally, the switch circuit includes a first switch circuit and a second switch circuit, and the first interface and the second interface are USB interfaces;

a first end of the first switch circuit is connected to a D+ pin of the second interface, and a first end of the second switch circuit is connected to a D- pin of the second interface;

The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface connection, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor;

The switching the switch circuit to connect the first interface and the second interface includes: switching a second end of the first switch circuit to be connected to a D+ pin of the first interface, The second end of the second switch circuit is switched to be connected to the D-pin of the first interface.

Optionally, the switch circuit includes a first switch circuit and a second switch circuit, and the first interface and the second interface are audio input interfaces;

a first end of the first switch circuit is connected to a left channel pin of the second interface, and a first end of the second switch circuit is connected to a right channel pin of the second interface;

The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface is connected, and the second end of the second switch circuit is switched to Debugging input/output interface connection of the embedded processor;

Switching the switch circuit to connect the first interface and the second interface, comprising: switching a second end of the first switch circuit to be connected to a left channel pin of the first interface And switching the second end of the second switch circuit to be connected to the right channel pin of the first interface.

Optionally, the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device through an external keypad; or the device receives the switch through its own infrared receiver to a command of the engineering mode and/or the command to switch to the user mode; or the command to switch to the engineering mode and/or the command to switch to the user mode is a specific form of audio stream, the device passing its own The audio input interface receives the command to switch to the engineering mode and/or the command to switch to the user mode.

According to a second aspect of the present invention, an embedded device is provided, the device comprising a first interface coupled to an embedded processor of the device, a second interface exposed to an exterior of the device, and a switching circuit, The first interface and the second interface are interfaces of the same type; the device further includes a mode flag setting module and a mode switching control module;

The mode flag bit setting module is configured to set a mode flag bit to an engineering mode flag in response to a command to switch to an engineering mode; and/or to set a mode flag bit to be in response to a command to switch to a user mode User mode flag;

The mode switching control module is configured to switch the device to an engineering mode and switch the switching circuit to connect the second interface and the embedded in response to the mode flag being set to an engineering mode flag a debug interface of the processor; and/or responsive to the mode flag being set to a user mode flag, switching the device to a user mode and switching the switch circuit to connect the first interface and Said second interface.

Optionally, the device further includes a boot flag setting module;

The boot flag setting module is configured to initialize a boot flag to a boot incomplete flag when the device is booted, and set the boot flag to a boot completion flag when the device is booted; wherein The device is configured to prohibit the mode flag from being set to an engineering mode flag when the boot flag is a boot incomplete flag;

The mode flag setting module is further configured to start a mode flag when the device is started Initialized to the user mode flag.

Optionally, the switch circuit includes a first switch circuit and a second switch circuit, and the first interface and the second interface are USB interfaces;

a first end of the first switch circuit is connected to a D+ pin of the second interface, and a first end of the second switch circuit is connected to a D- pin of the second interface;

The mode switching control module switches the switch circuit to a debug interface that connects the second interface and the embedded processor, including: switching a second end of the first switch circuit to the embedded a debug output/input interface connection of the processor, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor;

The mode switching control module switches the switch circuit to connect the first interface and the second interface, including: switching a second end of the first switch circuit to a D+ lead with the first interface The pin is connected to switch the second end of the second switch circuit to be connected to the D-pin of the first interface.

Optionally, the switch circuit includes a first switch circuit and a second switch circuit, and the first interface and the second interface are audio input interfaces;

a first end of the first switch circuit is connected to a left channel pin of the second interface, and a first end of the second switch circuit is connected to a right channel pin of the second interface;

The mode switching control module switches the switch circuit to a debug interface that connects the second interface and the embedded processor, including: switching a second end of the first switch circuit to the embedded a debug output/input interface connection of the processor, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor;

The mode switching control module switches the switch circuit to connect the first interface and the second interface, including: switching a second end of the first switch circuit to a left sound with the first interface The track pin is connected to switch the second end of the second switch circuit to be connected to the right channel pin of the first interface.

Optionally, the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device through an external keypad; or the device receives the switch through its own infrared receiver to The command of the engineering mode and/or the command to switch to the user mode; or the command to switch to the engineering mode and/or the command to switch to the user mode is a specific shape An audio stream of the type, the device receiving the command to switch to the engineering mode and/or the command to switch to the user mode through its own audio input interface.

According to a third aspect of the present invention, an embedded device is provided, the device comprising a first interface coupled to an embedded processor of the device, a second interface exposed to an exterior of the device, and a switching circuit, The first interface and the second interface are the same type of interface; the device further includes a memory, a processor, and a computer program stored on the memory and executable on the processor; when the processor executes the program Implement the following steps:

The mode flag is set to an engineering mode flag in response to a command to switch to the engineering mode;

Responsive to the mode flag being set to an engineering mode flag, switching the device to an engineering mode and switching the switching circuit to a debug interface connecting the second interface and the embedded processor;

and / or,

Setting the mode flag to the user mode flag in response to a command to switch to the user mode;

In response to the mode flag being set to a user mode flag, the device is switched to a user mode and the switching circuit is switched to connect the first interface and the second interface.

Optionally, when the processor executes the program, the following steps are further implemented:

Initializing the boot flag to the boot incomplete flag when the device is booting, initializing the mode flag to the user mode flag; wherein the device is configured to be in a state where the boot flag is the boot incomplete flag, The mode flag is prohibited from being set to the engineering mode flag; and,

When the device startup is completed, the boot flag is set to a boot completion flag.

Optionally, the switch circuit includes a first switch circuit and a second switch circuit, and the first interface and the second interface are USB interfaces;

a first end of the first switch circuit is connected to a D+ pin of the second interface, and a first end of the second switch circuit is connected to a D- pin of the second interface;

The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface connection, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor;

The switching the switch circuit to connect the first interface and the second interface includes: switching a second end of the first switch circuit to be connected to a D+ pin of the first interface, The second end of the second switch circuit is switched to be connected to the D-pin of the first interface.

Optionally, the switch circuit includes a first switch circuit and a second switch circuit, and the first interface and the second interface are audio input interfaces;

a first end of the first switch circuit is connected to a left channel pin of the second interface, and a first end of the second switch circuit is connected to a right channel pin of the second interface;

The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface connection, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor;

Switching the switch circuit to connect the first interface and the second interface, comprising: switching a second end of the first switch circuit to be connected to a left channel pin of the first interface And switching the second end of the second switch circuit to be connected to the right channel pin of the first interface.

Optionally, the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device through an external keypad; or the device receives the switch through its own infrared receiver to a command of the engineering mode and/or the command to switch to the user mode; or the command to switch to the engineering mode and/or the command to switch to the user mode is a specific form of audio stream, the device passing its own The audio input interface receives the command to switch to the engineering mode and/or the command to switch to the user mode.

The mode switching scheme of the embedded device provided by the invention can be switched between the user mode and the engineering mode, so that the development test and maintenance personnel can debug and test the embedded device that has been assembled by the whole machine.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is understood that the following drawings are merely illustrative of certain embodiments of the invention and are not intended to For those of ordinary skill in the art, Other relevant drawings can also be obtained from these drawings on the premise of creative labor.

1 is a block diagram of an embedded device according to a first embodiment of the present invention;

2 is a block diagram showing an embedded device according to a second embodiment of the present invention;

FIG. 3 is a schematic diagram showing the connection of a switch circuit of an embedded device according to an embodiment of the present invention; FIG.

4 is a schematic diagram showing the connection of a switch circuit of an embedded device according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of switching an embedded device into an engineering mode according to an embodiment of the present invention;

FIG. 6 is a schematic flowchart of switching an embedded device to a user mode according to an embodiment of the present invention;

FIG. 7 is a block diagram showing a hardware configuration of an embedded device according to an embodiment of the present invention.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of the components and steps, numerical expressions and numerical values set forth in the embodiments are not intended to limit the scope of the invention unless otherwise specified.

The following description of the at least one exemplary embodiment is merely illustrative and is in no way

Techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but the techniques, methods and apparatus should be considered as part of the specification, where appropriate.

In all of the examples shown and discussed herein, any specific values are to be construed as illustrative only and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in one figure, it is not required to be further discussed in the subsequent figures.

<embedded device>

Referring to FIG. 1 , an embedded device according to a first embodiment of the present invention is illustrated. The embedded device 100 includes a first interface 1 connected to an embedded processor of the embedded device 100 and a second exposed to the outside of the embedded device 100 . Two interface 2, and switch circuit 4, first interface 1 and second connection Port 2 is the same type of interface. The embedded device 100 further includes a mode flag setting module 6 and a mode switching control module 5.

The mode flag setting module 6 is configured to set the mode flag to the engineering mode flag in response to the command to switch to the engineering mode. The mode switching control module 5 is configured to switch the embedded device 100 to the engineering mode and switch the switching circuit 4 to the debug interface 3 connecting the second interface 2 and the embedded processor in response to the mode flag being set to the engineering mode flag. Therefore, the technician can access the debug interface 3 through the second interface 2, and perform debugging test on the embedded device 100 that has been assembled by the whole machine.

The mode flag setting module 6 is further configured to set the mode flag to the user mode flag in response to a command to switch to the user mode. The mode switching control module 5 is further configured to switch the embedded device 100 to the user mode and switch the switch circuit 4 to connect the first interface 1 and the second interface 2 in response to the mode flag being set to the user mode flag, so as to be embedded The device 100 switches from the engineering mode back to the user mode.

Referring to FIG. 2, an embedded device provided by the second embodiment of the present invention is provided. Compared with the embedded device provided by the first embodiment, the embedded device 100 provided by the second embodiment further includes a boot flag setting module 7 .

The boot flag setting module 7 is configured to initialize the boot flag to the boot incomplete flag when the embedded device 100 is booted, and to set the boot flag to the boot completion flag when the embedded device 100 is booted. The embedded device 100 is configured to disable the mode flag bit as an engineering mode flag in a state where the power-on flag is a power-on incomplete flag.

The mode flag setting module 6 is further configured to initialize the mode flag to the user mode flag when the embedded device 100 is started, that is, the embedded device 100 is set to the user mode each time the device is turned on.

Since the embedded device 100 is configured to disable the mode flag from being set to the engineering mode flag when the boot flag is the boot incomplete flag, the embedded device 100 can only switch to the engineering mode after the boot is completed, and the main purpose is to protect The initialization of each module during the boot process and the prevention of switching modes during the boot process.

In the embedded device provided in the above embodiment, the user mode is determined by the mode flag bit. Or the engineering mode, if it is in the engineering mode, open the debugging information and test functions. If it is in user mode, it only provides the function, and does not open the debugging information and test function.

<switch circuit>

Referring to FIG. 3, a schematic diagram of a connection of a switch circuit of an embedded device according to an embodiment of the present invention is illustrated.

The switch circuit includes a first switch circuit 31 and a second switch circuit 32, and the first interface and the second interface are USB interfaces.

The first end of the first switch circuit 31 is connected to the D+ pin of the second USB interface 21, and the first end of the second switch circuit 32 is connected to the D- pin of the second USB interface 21.

In response to the mode flag being set to an engineering mode flag, the mode switching control module switches the embedded device to the engineering mode and switches the second end of the first switching circuit 31 to the debug input interface RX with the embedded processor. Connected, the second end of the second switching circuit 32 is switched to be connected to the debug output interface TX of the embedded processor. Of course, the second end of the first switch circuit 31 can also be switched to be connected to the debug output interface TX of the embedded processor, and the second end of the second switch circuit 32 can be switched to the debug input interface RX of the embedded processor. connection. After the above switching, the technician can access the debug input interface RX and the debug output interface TX through the second USB interface 21 to debug the embedded device that has been assembled.

In response to the mode flag being set to the user mode flag, the mode switching control module switches the embedded device to the user mode and switches the second end of the first switching circuit 31 to the D+ pin of the first USB interface 11. Connected to switch the second end of the second switch 32 circuit to be connected to the D-pin of the first USB interface 11.

Referring to FIG. 4, a schematic diagram of a connection of a switch circuit of an embedded device according to an embodiment of the present invention is illustrated.

The switch circuit includes a first switch circuit 31 and a second switch circuit 32, and the first interface and the second interface are audio input interfaces.

The first end of the first switch circuit 31 is connected to the left channel pin of the second audio input interface 22, and the first end of the second switch circuit 31 is connected to the right channel pin of the second audio input interface 22.

In response to the mode flag being set to an engineering mode flag, the mode switching control module switches the embedded device to the engineering mode and switches the second end of the first switching circuit 31 to the debug input interface RX with the embedded processor. Connected, the second end of the second switching circuit 32 is switched to be connected to the debug output interface TX of the embedded processor. Of course, the second end of the first switch circuit 31 can also be switched to be connected to the debug output interface TX of the embedded processor, and the second end of the second switch circuit 32 can be switched to the debug input interface RX of the embedded processor. connection. After the above switching, the technician can access the debug input interface RX and the debug output interface TX through the second audio input interface 22, and perform debugging test on the embedded device 100 that has been assembled.

In response to the mode flag being set to the user mode flag, the mode switching control module switches the embedded device to the user mode and switches the second end of the first switching circuit 31 to the left sound with the first audio input interface 12. The track pin is connected to switch the second end of the second switch circuit 32 to be connected to the right channel pin of the first audio input interface 12.

<Mode switching command receiving mode>

In the above embodiment, the embedded device can receive the mode switching command input by the user in the following three ways:

The first way: the command to switch to engineering mode and / or the command to switch to user mode is input to the embedded device through the external keypad. The keypad is connected to the embedded device, and a specific non-function key or a specific combination key is defined on the keypad as a mode switching command. When the embedded device is in the user mode, when the specific non-function key or the specific combination key is pressed, the embedded device switches to the engineering mode and the second interface is connected with the debugging interface, so that the technician can access the debugging through the second interface. The interface performs debugging test on the embedded device that has been assembled by the whole machine; when the user presses a specific non-functional key or a specific combination key again, the embedded device switches to the user mode and the second interface is connected with the first interface, and the second interface is restored. Its original function.

The second way: the embedded device receives commands to switch to engineering mode and/or commands to switch to user mode through its own infrared receiver. The usual infrared remote control has a coding range of 0 to 255. The remote control function itself does not use as many codes. The technician can set a specific code as a switching command in the spare code. The embedded device receives the infrared through its own infrared receiver. Mode switching command sent by the remote controller.

The third way: the command to switch to the engineering mode and/or the command to switch to the user mode is a specific form of audio stream, and the embedded device receives the command to switch to the engineering mode through its own audio input interface and/or switches to the user mode. The command.

<Mode switching method of embedded device>

Referring to FIG. 5 and FIG. 6 , an embodiment of the present invention provides a mode switching method for an embedded device:

The embedded device is powered on, and step 801 is executed to initialize the embedded system; the boot flag bit SystemOkFlag is initialized to 0, SystemOkFlag=0 indicates that the boot is not completed; the mode flag bit ModelFlag is initialized to 0, and ModelFlag=0 indicates the user mode.

After the initialization is completed, step 802 is executed to set the boot flag bit SystemOkFlag to 1, and SystemOkFlag=1 indicates that the boot process is completed.

In step 803, the system detects the boot flag bit SystemOkFlag in real time, and if SystemOkFlag=0, masks the command to switch to the engineering mode.

In step 804, in the state of SystemOkFlag=1, it is detected whether a command to switch to the engineering mode is received.

If the system receives a command to switch to the engineering mode, the system executes step 805 to set the mode flag bit ModelFlag to 1, and ModelFlag=1 indicates the engineering mode.

In response to the mode flag bit ModelFlag being set to 1, step 806 is executed, the embedded device 1 is switched to the engineering mode and the switching circuit is switched to the debug interface connecting the second interface and the embedded processor.

In a state where the embedded device is in the engineering mode, step 901 detects whether a command to switch to the user mode is received. If a command to switch to the user mode is received, step 902 is executed to set the mode flag bit ModelFlag to zero. In response to the mode flag bit ModelFlag being set to 0, step 903 is executed, the embedded device switches to the user mode and the switch circuit switches to connect the first interface and the second interface, and the second interface restores its original function.

An embodiment of the present invention provides a mode switching method of an embedded device, where the device includes a first interface connected to an embedded processor of the device, and a second interface exposed to the outside of the device, And a switch circuit, the first interface and the second interface being the same type of interface; the method comprising the steps of: setting a mode flag to an engineering mode flag in response to a command to switch to an engineering mode; The mode flag is set to an engineering mode flag, the device is switched to an engineering mode and the switching circuit is switched to a debug interface connecting the second interface and the embedded processor; and/or, responsive Setting the mode flag to the user mode flag in response to the command to switch to the user mode; switching the device to the user mode and switching the switch circuit to the connection mode in response to the mode flag being set to the user mode flag The first interface and the second interface are described.

In a specific example, the method further includes the steps of: initializing the boot flag bit to a power-on incomplete flag when the device is booting, and initializing the mode flag bit to a user mode flag; wherein the device is configured to be When the boot flag is the boot incomplete flag, the mode flag is prohibited from being set to the engineering mode flag; and when the device is booted, the boot flag is set to the boot completion flag.

In a specific example, the switch circuit includes a first switch circuit and a second switch circuit, the first interface and the second interface are USB interfaces; a first end of the first switch circuit and the a D+ pin of the second interface is connected, a first end of the second switch circuit is coupled to a D- pin of the second interface; the switching circuit is switched to connect the second interface and the The debugging interface of the embedded processor includes: switching a second end of the first switch circuit to be connected to a debug output/input interface of the embedded processor, and switching a second end of the second switch circuit For connecting to a debug input/output interface of the embedded processor; switching the switch circuit to connect the first interface and the second interface, comprising: seconding the first switch circuit The terminal is switched to be connected to the D+ pin of the first interface, and the second end of the second switch circuit is switched to be connected to the D-pin of the first interface.

In a specific example, the switch circuit includes a first switch circuit and a second switch circuit, the first interface and the second interface are audio input interfaces; and the first end of the first switch circuit a left channel pin connection of the second interface, a first end of the second switch circuit is connected to a right channel pin of the second interface; the switching circuit is switched to connect the second The interface and the debug interface of the embedded processor include: switching a second end of the first switch circuit to be connected to a debug output/input interface of the embedded processor, and the second open The second end of the circuit is switched to be connected to the debug input/output interface of the embedded processor; the switching the switch circuit to connect the first interface and the second interface includes: The second end of the first switch circuit is switched to be connected to the left channel pin of the first interface, and the second end of the second switch circuit is switched to be connected to the right channel pin of the first interface .

In a specific example, the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device via an external keypad.

In a specific example, the device receives the command to switch to the engineering mode and/or the command to switch to the user mode through its own infrared receiver.

In a specific example, the command to switch to the engineering mode and/or the command to switch to the user mode is a specific form of audio stream, and the device receives the switch to the engineering mode through its own audio input interface. Command and / or switch to user mode command.

<embedded device>

For those skilled in the art, the mode switching method of the foregoing embedded device can be implemented by hardware, software, or a combination of software and hardware. Based on the same inventive concept, an embedded device according to an embodiment of the present invention will be described with reference to FIG. 7 to perform the aforementioned mode switching method.

7 is a block diagram showing an example of a hardware configuration of an embedded device that can be used to implement an embodiment of the present invention. The embedded device 300 includes an embedded processor 3010, a memory 3020, an interface device 3030, a communication device 3040, a display device 3050, an input device 3060, a speaker 3070, a microphone 3080, and the like. The embedded device 300 also includes a first interface coupled to the embedded processor 3010, a second interface exposed to the exterior of the embedded device 300 device, and a switching circuit coupled to the embedded processor 3010, not shown in FIG.

The memory 3020 is configured to store instructions for controlling the processor 3010 to operate to perform the mode switching method according to any one of the preceding claims, comprising: setting a mode flag to an engineering in response to a command to switch to an engineering mode a mode flag; responsive to the mode flag being set to an engineering mode flag, switching the device to an engineering mode and switching the switching circuit to a debug interface connecting the second interface and the embedded processor; And/or, in response to the command to switch to the user mode, setting the mode flag to the user mode flag; in response to the mode flag being set to the user mode flag, switching the device to the user mode and The switch circuit is switched to connect the first interface and the second interface.

The interface device 3030 includes, for example, a USB interface, a headphone jack, and the like. The communication device 3040 can, for example, perform wired or wireless communication. The display device 3050 is, for example, a liquid crystal display, a touch display, or the like. Input device 3060 can include, for example, a touch screen, a keyboard, and the like. The user can input/output voice information through the speaker 3070 and the microphone 3080.

The embedded device shown in Figure 7 is merely illustrative and is in no way intended to limit the invention, its application or use. Those skilled in the art will appreciate that although a plurality of devices are illustrated in Figure 7, the present invention may relate only to a portion of the devices therein. Those skilled in the art can design instructions in accordance with the disclosed embodiments of the present invention. The instructions for controlling the operation of the processor are well known in the art and will not be described in detail herein.

It should be noted that each embodiment in the specification is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the embodiments are referred to each other. can. However, it should be apparent to those skilled in the art that the above embodiments may be used alone or in combination with each other as needed. In addition, for the device embodiment, since it corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the corresponding part of the method embodiment. The system embodiments described above are merely illustrative, and the modules illustrated as separate components may or may not be physically separate.

In addition, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block of the flowchart or block diagram can represent a module, a program segment, or a portion of code that includes one or more of the Executable instructions. It should also be noted that in some alternative implementations, the functions noted in the blocks may also occur in a different order than that illustrated in the drawings. For example, two consecutive blocks may be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented in a dedicated hardware-based system that performs the specified function or action. Or it can be implemented by a combination of dedicated hardware and computer instructions.

The computer program product provided by the embodiment of the present invention includes a computer readable storage medium storing the program code, and the program code includes instructions for executing the method described in the foregoing method embodiment. For the specific implementation, refer to the method embodiment. , will not repeat them here.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some communication interface, device or unit, and may be electrical, mechanical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention. It should be noted that similar reference numerals and letters indicate similar items in the following figures. Therefore, once an item is defined in one figure, it is not necessary to further define and explain it in the subsequent figures.

While the invention has been described in detail with reference to the preferred embodiments of the present invention, it is understood that It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope of the invention. The scope of the invention is defined by the appended claims.

Claims (15)

A mode switching method for an embedded device, characterized in that the device comprises a first interface connected to an embedded processor of the device, a second interface exposed to the outside of the device, and a switch circuit, the first The interface and the second interface are the same type of interface; the method includes the following steps: The mode flag is set to an engineering mode flag in response to a command to switch to the engineering mode; Responsive to the mode flag being set to an engineering mode flag, switching the device to an engineering mode and switching the switching circuit to a debug interface connecting the second interface and the embedded processor; and / or, Setting the mode flag to the user mode flag in response to a command to switch to the user mode; In response to the mode flag being set to a user mode flag, the device is switched to a user mode and the switching circuit is switched to connect the first interface and the second interface. The method of claim 1 wherein the method further comprises the steps of: When the device is started, the boot flag is initialized to a boot incomplete flag, and the mode flag is initialized to a user mode flag; wherein the device is configured to be disabled when the boot flag is a boot unfinished flag The mode flag is set to an engineering mode flag; and, When the device is booted, the boot flag is set to a boot completion flag. The method according to claim 1 or 2, wherein the switch circuit comprises a first switch circuit and a second switch circuit, and the first interface and the second interface are USB interfaces; a first end of the first switch circuit is connected to a D+ pin of the second interface, and a first end of the second switch circuit is connected to a D- pin of the second interface; The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface is connected, and the second end of the second switch circuit is switched to Debugging input/output interface connection of the embedded processor; The switching the switch circuit to connect the first interface and the second interface includes: switching a second end of the first switch circuit to be connected to a D+ pin of the first interface, The second end of the second switch circuit is switched to be connected to the D-pin of the first interface. The method according to claim 1 or 2, wherein the switch circuit comprises a first switch circuit and a second switch circuit, and the first interface and the second interface are audio input interfaces; a first end of the first switch circuit is connected to a left channel pin of the second interface, and a first end of the second switch circuit is connected to a right channel pin of the second interface; The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface connection, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor; Switching the switch circuit to connect the first interface and the second interface, comprising: switching a second end of the first switch circuit to be connected to a left channel pin of the first interface And switching the second end of the second switch circuit to be connected to the right channel pin of the first interface. The method according to any one of claims 1 to 4, wherein the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device through an external keypad; or Receiving, by the infrared receiver of the device, the command to switch to the engineering mode and/or the command to switch to the user mode; or the command to switch to the engineering mode and/or the switching to the user mode The command is a specific form of audio stream, and the device receives the command to switch to the engineering mode and/or the command to switch to the user mode through its own audio input interface. An embedded device, characterized in that the device comprises a first interface connected to an embedded processor of the device, a second interface exposed to the outside of the device, and a switching circuit, the first interface and the The second interface is an interface of the same type; the device further includes a mode flag setting module and a mode switching control module; The mode flag setting module is configured to respond to a command to switch to an engineering mode The flag bit is set to an engineering mode flag; and/or, for setting a mode flag bit to a user mode flag in response to a command to switch to the user mode; The mode switching control module is configured to switch the device to an engineering mode and switch the switching circuit to connect the second interface and the embedded in response to the mode flag being set to an engineering mode flag a debug interface of the processor; and/or responsive to the mode flag being set to a user mode flag, switching the device to a user mode and switching the switch circuit to connect the first interface and Said second interface. The device according to claim 6, wherein the device further comprises a boot flag setting module; The boot flag setting module is configured to initialize a boot flag to a boot incomplete flag when the device is booted, and set the boot flag to a boot completion flag when the device is booted; wherein The device is configured to prohibit the mode flag from being set to an engineering mode flag when the boot flag is a boot incomplete flag; The mode flag setting module is further configured to initialize a mode flag bit to a user mode flag when the device is started. The device according to claim 6 or 7, wherein the switch circuit comprises a first switch circuit and a second switch circuit, and the first interface and the second interface are USB interfaces; a first end of the first switch circuit is connected to a D+ pin of the second interface, and a first end of the second switch circuit is connected to a D- pin of the second interface; The mode switching control module switches the switch circuit to a debug interface that connects the second interface and the embedded processor, including: switching a second end of the first switch circuit to the embedded a debug output/input interface connection of the processor, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor; The mode switching control module switches the switch circuit to connect the first interface and the second interface, including: switching a second end of the first switch circuit to a D+ lead with the first interface The pin is connected to switch the second end of the second switch circuit to be connected to the D-pin of the first interface. The device according to claim 6 or 7, wherein said switch circuit package The first switch circuit and the second switch circuit, the first interface and the second interface are audio input interfaces; a first end of the first switch circuit is connected to a left channel pin of the second interface, and a first end of the second switch circuit is connected to a right channel pin of the second interface; The mode switching control module switches the switch circuit to a debug interface that connects the second interface and the embedded processor, including: switching a second end of the first switch circuit to the embedded a debug output/input interface connection of the processor, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor; The mode switching control module switches the switch circuit to connect the first interface and the second interface, including: switching a second end of the first switch circuit to a left sound with the first interface The track pin is connected to switch the second end of the second switch circuit to be connected to the right channel pin of the first interface. The device according to any one of claims 6 to 10, wherein the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device through an external keypad; or Receiving, by the infrared receiver of the device, the command to switch to the engineering mode and/or the command to switch to the user mode; or the command to switch to the engineering mode and/or the switching to the user mode The command is a specific form of audio stream, and the device receives the command to switch to the engineering mode and/or the command to switch to the user mode through its own audio input interface. An embedded device, characterized in that the device comprises a first interface connected to an embedded processor of the device, a second interface exposed to the outside of the device, and a switching circuit, the first interface and the The second interface is an interface of the same type; the device further includes a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor executing the program implements the following steps: The mode flag is set to an engineering mode flag in response to a command to switch to the engineering mode; Responsive to the mode flag being set to an engineering mode flag, switching the device to an engineering mode and switching the switching circuit to a debug interface connecting the second interface and the embedded processor; and / or, Setting the mode flag to the user mode flag in response to a command to switch to the user mode; In response to the mode flag being set to a user mode flag, the device is switched to a user mode and the switching circuit is switched to connect the first interface and the second interface. The device according to claim 11, wherein said processor further implements the following steps when said program is executed: Initializing the boot flag to the boot incomplete flag when the device is booting, initializing the mode flag to the user mode flag; wherein the device is configured to be in a state where the boot flag is the boot incomplete flag, The mode flag is prohibited from being set to the engineering mode flag; and, When the device startup is completed, the boot flag is set to a boot completion flag. The device according to claim 11 or 12, wherein the switch circuit comprises a first switch circuit and a second switch circuit, and the first interface and the second interface are USB interfaces; a first end of the first switch circuit is connected to a D+ pin of the second interface, and a first end of the second switch circuit is connected to a D- pin of the second interface; The switching the switching circuit to the debug interface connecting the second interface and the embedded processor comprises: switching a second end of the first switch circuit to be debugged with the embedded processor An output/input interface connection, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor; The switching the switch circuit to connect the first interface and the second interface includes: switching a second end of the first switch circuit to be connected to a D+ pin of the first interface, The second end of the second switch circuit is switched to be connected to the D-pin of the first interface. The device according to claim 11 or 12, wherein the switch circuit comprises a first switch circuit and a second switch circuit, and the first interface and the second interface are audio input interfaces; a first end of the first switch circuit is connected to a left channel pin of the second interface, and a first end of the second switch circuit is connected to a right channel pin of the second interface; Switching the switch circuit to a debug interface connecting the second interface and the embedded processor, comprising: switching a second end of the first switch circuit to the embedded portion a debug output/input interface connection of the processor, switching a second end of the second switch circuit to be connected to a debug input/output interface of the embedded processor; Switching the switch circuit to connect the first interface and the second interface, comprising: switching a second end of the first switch circuit to be connected to a left channel pin of the first interface And switching the second end of the second switch circuit to be connected to the right channel pin of the first interface. The device according to any one of claims 11 to 14, wherein the command to switch to the engineering mode and/or the command to switch to the user mode is input to the device through an external keypad; or Receiving, by the infrared receiver of the device, the command to switch to the engineering mode and/or the command to switch to the user mode; or the command to switch to the engineering mode and/or the switching to the user mode The command is a specific form of audio stream, and the device receives the command to switch to the engineering mode and/or the command to switch to the user mode through its own audio input interface.

Images