CN116049045B - Command sending method and electronic device - Google Patents

Abstract

This application provides a command sending method and electronic device. The method includes: determining whether the command to be sent to the kernel layer is a first command, and the first command is a command related to a multi-block operation. If so, shielding the kernel layer from automatically enabling the function of the second command, and the second command is capable of A command that aborts or interrupts the first command sends the first command to the kernel layer. In this way, after the function of automatically enabling the second command of the kernel layer has been blocked, the first command is sent to the kernel layer. Since the function of automatically enabling the second command has been blocked, the kernel layer no longer interprets the first command. Being interfered by the second command, the correct first command can be sent to the eMMC device, thereby avoiding the chip from making errors due to the influence of special command settings when sending related commands.

Description

Command sending method and electronic device

Technical field

The present application relates to the field of terminal equipment, and in particular, to a command sending method and electronic equipment.

Background technique

Electronic equipment generally includes hosts and devices. The host can read data from the device or write data to the device through the communication connection between the host and the device. Usually, the chip that serves as the host of the electronic device will support industry-recognized protocols and all command sets corresponding to the protocols.

At present, some chips have special settings for one or some commands, causing these chips to make errors when sending one or some commands in the command set when serving as hosts for electronic devices.

Contents of the invention

In order to solve the above technical problems, this application provides a command sending method and electronic equipment. For chips with special command settings, a new command sending method is provided to avoid the chip being affected by the special command settings when sending related commands. And error.

In a first aspect, this application provides a command sending method. This method is applied to electronic devices. The method includes: determining whether the command to be sent to the kernel layer is a first command, and the first command is a command related to a multi-block operation. If so, shielding the kernel layer from automatically enabling the function of the second command, and the second command is capable of A command that aborts or interrupts the first command sends the first command to the kernel layer. In this way, after the function of automatically enabling the second command of the kernel layer has been blocked, the first command is sent to the kernel layer. Since the function of automatically enabling the second command has been blocked, the kernel layer no longer interprets the first command. Being interfered by the second command, the correct first command can be sent to the eMMC device, thereby avoiding the chip from making errors due to the influence of special command settings when sending related commands.

According to the first aspect, shielding the kernel layer from automatically enabling the second command function includes: setting a first transmission mode and a second transmission mode in the kernel layer, wherein in the first transmission mode, the kernel layer automatically enables the second command. command, the third command is not enabled; in the second transmission mode, the kernel layer automatically enables the third command and does not enable the second command; the kernel layer adopts the first transmission mode when the first structure is empty, The kernel layer adopts the second transmission mode when the first structure is not empty; encapsulates the third command into the first structure to obtain the first target structure; and sends the first target structure to the kernel layer. In this way, the function of the kernel layer automatically enabling the second command can be successfully blocked before sending the first command to the kernel layer.

According to the first aspect, shielding the kernel layer from automatically enabling the second command function includes: sending a shutdown instruction to the kernel layer, where the shutdown instruction is used to instruct the kernel layer to shut down the function of automatically enabling the second command. In this way, the function of the kernel layer automatically enabling the second command can be successfully blocked before sending the first command to the kernel layer.

According to the first aspect, after sending the first command to the kernel layer, the method further includes: determining whether the kernel layer has finished executing the first command; and after the kernel layer has finished executing the first command, restoring the function of the kernel layer to automatically enable the second command. In this way, it can avoid affecting the chip's processing flow of other commands.

According to the first aspect, sending the first command to the kernel layer includes: sending the first command to the kernel layer through an ioctl function.

According to the first aspect, the first command is a multi-block read command CMD18 or a multi-block write command CMD25, and the second command is a stop transmission command CMD12.

According to the first aspect, the first command is a combined command including a multi-block write command CMD25 and a command CMD23 for setting the number of read and write blocks, and the second command is a stop transmission command CMD12.

According to the first aspect, the third command is a command CMD23 for setting the number of read and write blocks.

In a second aspect, this application provides an electronic device, including: a memory and a processor. The memory is coupled to the processor; the memory stores program instructions. When the program instructions are executed by the processor, the electronic device causes the electronic device to execute any of the first aspects. A command sending method.

In a third aspect, the present application provides a computer-readable storage medium, including a computer program. When the computer program is run on an electronic device, the electronic device causes the electronic device to execute any one of the command sending methods of the first aspect.

Description of the drawings

FIG. 1 is a schematic structural diagram of an exemplary electronic device 100;

Figure 2 is an exemplary software structure block diagram of the electronic device 100 according to the embodiment of the present application;

Figure 3 is a schematic diagram of communication between a host and an eMMC device in an electronic device;

FIG. 4 is an exemplary flowchart of a command sending method.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations.

The terms “first” and “second” in the description and claims of the embodiments of this application are used to distinguish different objects, rather than to describe a specific order of objects. For example, the first target object, the second target object, etc. are used to distinguish different target objects, rather than to describe a specific order of the target objects.

In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "such as" in the embodiments of the present application is not to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner.

In the description of the embodiments of this application, unless otherwise specified, the meaning of “plurality” refers to two or more. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

The hardware of electronic equipment usually includes host and device. Among them, the host is usually a chip. The device may be a memory, for example. The communication connection between the host and the device can be carried out through the communication interface. For example, the communication interface may be an eMMC bus.

Among them, the device is a device that supports the eMMC (embedded MultiMedia Card, embedded multimedia card) protocol.

The host can read data from the device or write data to the device by sending commands that comply with the eMMC protocol to the device.

In the related art, some chips have special settings for one or some commands, which causes these chips to make errors when executing one or some commands in the command set when they serve as electronic device hosts.

For example, when a chip A is equipped with an eMMC memory, the host and the eMMC memory communicate through the eMMC bus. Chip A sends the CMD23+CMD25 command to the eMMC memory to obtain the health information of the eMMC memory. However, after the chip sent the CMD23+CMD25 command to the eMMC memory, chip A received a CRC (Cyclic Redundance Check) error, and the eMMC memory did not return health information to the eMMC memory. It can be seen that chip A made an error when sending the CMD23+CMD25 command to the eMMC memory.

Embodiments of the present application provide a command sending method, and provide a new command sending method for a chip with special command settings to avoid errors caused by the impact of special command settings when the chip sends related commands.

The command sending method in the embodiment of the present application can be applied to electronic devices, such as smart phones, tablets and other electronic devices. The structure of the electronic device can be shown in Figure 1.

FIG. 1 is a schematic structural diagram of an exemplary electronic device 100 . It should be understood that the electronic device 100 shown in FIG. 1 is only an example of an electronic device, and the electronic device 100 may have more or fewer components than shown in the figure, and two or more components may be combined. , or can have different component configurations. The various components shown in Figure 1 may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

Referring to Figure 1, the electronic device 100 may include: a processor 110, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2. Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone interface 170D, sensor module 180, indicator 192, camera 193, etc.

The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), an image signal processor ( image signal processor (ISP), controller, memory, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural-network processing unit (NPU), etc. . Among them, different processing units can be independent devices or integrated in one or more processors.

The controller may be the nerve center and command center of the electronic device 100 . The controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in processor 110 is cache memory.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 100 . The external memory card communicates with the processor 110 through the external memory interface 120 to implement the data storage function. Such as saving music, videos, etc. files in external memory card.

Internal memory 121 may be used to store computer executable program code, which includes instructions. The processor 110 executes instructions stored in the internal memory 121 to execute various functional applications and data processing of the electronic device 100 . The internal memory 121 may include a program storage area and a data storage area. Among them, the stored program area can store an operating system, at least one application program required for a function (such as a sound playback function, an image playback function, etc.). The storage data area may store data created during use of the electronic device 100 (such as audio data, phone book, etc.). In addition, the internal memory 121 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, universal flash storage (UFS), etc.

The processor 110 is located on the chip of the embodiment of the present application, and the processor 110 may serve as the host in the embodiment of the present application. The eMMC memory can communicate with the processor 110 through the eMMC bus.

Among them, the software system of the electronic device 100 may adopt a layered architecture, an event-driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture. The embodiment of this application takes the Android system with a layered architecture as an example to illustrate the software structure of the electronic device 100 .

FIG. 2 is an exemplary software structure block diagram of the electronic device 100 according to the embodiment of the present application.

The layered architecture of the electronic device 100 divides the software into several layers, and each layer has clear roles and division of labor. The layers communicate through software interfaces. In some embodiments, the Android system may include an application layer, an application framework layer, a system layer, a kernel layer, etc.

The application layer can include a series of application packages.

As shown in Figure 2, the application package can include camera, gallery, calendar, calling, map, navigation, WLAN, Bluetooth, music, video, short message and other applications.

The application framework layer provides an application programming interface (API) and programming framework for applications in the application layer. The application framework layer includes some predefined functions.

As shown in Figure 2, the application framework layer can include a window manager, content provider, view system, phone manager, resource manager, notification manager, etc.

A window manager is used to manage window programs. The window manager can obtain the display size, determine whether there is a status bar, lock the screen, capture the screen, etc.

Content providers are used to store and retrieve data and make this data accessible to applications. Said data can include videos, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

The view system includes visual controls, such as controls that display text, controls that display pictures, etc. A view system can be used to build applications. The display interface can be composed of one or more views. For example, a display interface including a text message notification icon may include a view for displaying text and a view for displaying pictures.

The phone manager is used to provide communication functions of the electronic device 100 . For example, call status management (including connected, hung up, etc.).

The resource manager provides various resources to applications, such as localized strings, icons, pictures, layout files, video files, etc.

The notification manager allows applications to display notification information in the status bar, which can be used to convey notification-type messages and can automatically disappear after a short stay without user interaction. For example, the notification manager is used to notify download completion, message reminders, etc. The notification manager can also be notifications that appear in the status bar at the top of the system in the form of charts or scroll bar text, such as notifications for applications running in the background, or notifications that appear on the screen in the form of conversation windows. For example, text information is prompted in the status bar, a beep sounds, the electronic device vibrates, the indicator light flashes, etc.

Android Runtime includes core libraries and virtual machines. The Android runtime is responsible for the scheduling and management of the Android system.

The core library contains two parts: one is the functional functions that need to be called by the Java language, and the other is the core library of Android.

The application layer and application framework layer run in virtual machines. The virtual machine executes the java files of the application layer and application framework layer into binary files. The virtual machine is used to perform object life cycle management, stack management, thread management, security and exception management, and garbage collection and other functions.

System libraries can include multiple functional modules. As shown in Figure 2, in the embodiment of the present application, the system library includes a command sending module, and the command sending module is used to execute the command sending method in the embodiment of the present application.

It should be noted that, although not shown in Figure 2, it can be understood that the system library can also include other functional modules, such as: surface manager (surface manager), media libraries (Media Libraries), three-dimensional graphics processing Library (for example: OpenGL ES), 2D graphics engine (for example: SGL), etc.

The surface manager is used to manage the display subsystem and provides the fusion of 2D and 3D layers for multiple applications.

The media library supports playback and recording of a variety of commonly used audio and video formats, as well as static image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

The 3D graphics processing library is used to implement 3D graphics drawing, image rendering, composition, and layer processing.

2D Graphics Engine is a drawing engine for 2D drawing. The kernel layer is the layer between hardware and software. The kernel layer contains at least display driver, camera driver, audio driver, and sensor driver.

The kernel layer is the layer between hardware and software.

As shown in Figure 2, the kernel layer can include modules such as display driver, Bluetooth driver, audio driver, Wi-Fi driver, and device driver.

Among them, the command sent to the kernel layer in the command sending method of the embodiment of the present application is received by the device driver module, and then the device driver module sends the command to the eMMC device, such as an eMMC memory, through the eMMC bus.

It can be understood that the layers in the software structure shown in FIG. 2 and the components included in each layer do not constitute specific limitations on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer layers than shown in the figures, and each layer may include more or fewer components, which is not limited by this application.

The present application will be described in detail below through examples.

In the embodiment of the present application, the host communicates with the eMMC device through the eMMC Host Controller (eMMC Host Controller) in the host. The eMMC host controller may be part of processor 110 shown in FIG. 1 .

FIG. 3 is a schematic diagram of communication between a host and an eMMC device in an electronic device. Please refer to Figure 3. The eMMC host controller in the host sends a command (Command, abbreviated as CMD) to the eMMC device through the eMMC bus, and the eMMC device returns the response (response) information to the command to the host through the eMMC bus.

FIG. 4 is an exemplary flowchart of a command sending method. In this embodiment, the command sending method is applied to an electronic device, and the kernel layer of the electronic device enables the function of automatically enabling the second command.

As shown in Figure 4, in this embodiment, the method may include the following steps:

S401. Determine whether the command to be sent to the kernel layer is the first command. If so, execute step S402; otherwise, execute step S403. Among them, the first command is a command related to multi-block operations.

For example, in one example, the first command may be a multi-block read command CMD18. In another example, the first command may be a multi-block write command CMD25.

S402. Shield the kernel layer from automatically enabling the function of the second command, where the second command is a command capable of suspending or interrupting the first command.

For example, in the case where the first command is the multi-block read command CMD18 or the multi-block write command CMD25, the second command may be the stop transmission command CMD12.

In related technology, the reason for the error when the chip sends the CMD23+CMD25 command to the eMMC memory is that the kernel layer of the chip turns on the function of automatically enabling CMD12, so that when the chip sends the CMD23+CMD25 command to the eMMC memory, The chip's kernel layer device driver actually sends the combined command of CMD23+CMD25+CMD12 to the eMMC memory. In this way, since this command combination does not exist in the eMMC protocol, the eMMC memory does not support the combined command of CMD23+CMD25+CMD12. Therefore, the eMMC memory will change the CRC status position after receiving the combined command of CMD23+CMD25+CMD12 sent by the host. bit and returned to the host through a response. After verification, the host gives a CRC error verification result, that is, the verification fails.

In this embodiment, the function of automatically enabling the second command by the kernel layer is shielded, so that after the kernel layer receives the first command transmitted by the upper layer, the first command is no longer interfered by the automatically enabled second command, so that the kernel layer layer is able to send the correct first command to the eMMC device. In this way, the eMMC device can correctly respond to the first command sent by the host and no longer report errors.

S403. Send the first command to the kernel layer.

This step is to send the first command to the kernel layer after the function of the kernel layer automatically enabling the second command has been blocked. At this time, since the function of automatically enabling the second command has been blocked, the kernel layer is no longer interfered by the second command when interpreting the first command, so that the correct first command can be sent to the eMMC device. In this way, errors caused by special command settings are avoided when the chip sends related commands.

In one example, shielding the kernel layer from automatically enabling the second command may include:

A first transmission mode and a second transmission mode are set in the kernel layer, wherein, in the first transmission mode, the kernel layer automatically enables the second command and disables the third command; in the second transmission mode, the kernel layer The layer automatically enables the third command and disables the second command; the kernel layer adopts the first transmission mode when the first structure is empty, and the kernel layer adopts the second transmission mode when the first structure is not empty. model;

Encapsulate the third command into the first structure to obtain the first target structure;

Send the first target structure to the kernel layer.

For example, the host will set the transmission mode every time it sends a command to the device. There are two branches in setting the transmission mode: branch a and branch b.

Among them, branch a is: multi-block operation and the operation block is greater than 1, sbc (first structure) is empty, the host enables SDHCI_AUTO_CMD12 capability, and the AUTO CMD12 transmission mode is enabled.

Branch b is: sbc is not empty, the host enables the AUTO CMD23 capability, and enables the AUTO CMD23 transmission mode.

In this way, before sending CMD25 to the kernel layer, CMD23 is encapsulated in the sbc structure and sent to the kernel layer. When the kernel layer determines that the sbc structure is not empty and contains CMD23, it will execute the transmission mode of branch b and enable the AUTO CMD23 capability. Therefore, after the kernel layer receives the CMD25 sent by the upper layer, it sends the combined command of CMD23+CMD25 to the device.

In another example, shielding the kernel layer from automatically enabling the second command may include:

Send a shutdown instruction to the kernel layer, where the shutdown instruction is used to instruct the kernel layer to turn off the function of automatically enabling the second command.

For example, the upper layer of chip A (such as the system library) first sends the above shutdown command to the kernel layer before sending the combined command of CMD23+CMD25 to the kernel layer. After the kernel layer receives the shutdown instruction, it turns off the AUTO CMD12 capability. In this way, after turning off the enable AUTO CMD12 capability of the kernel layer and then sending the combined command of CMD23+CMD25 to the kernel layer, the kernel layer will not be interfered by CMD12, and the kernel layer will send the combined command of CMD23+CMD25 to the device.

In one example, after sending the first command to the kernel layer, it may also include:

Determine whether the kernel layer has completed executing the first command;

After the kernel layer executes the first command, the kernel layer's function of automatically enabling the second command is restored.

This can avoid affecting the chip's processing flow of other commands.

The command sending method of the embodiment of the present application enables a chip with special command settings to normally read data from or write data to an eMMC device, thus avoiding incompatibility between the chip and the eMMC device due to special command settings.

An embodiment of the present application also provides an electronic device. The electronic device includes a memory and a processor. The memory is coupled to the processor. The memory stores program instructions. When the program instructions are executed by the processor, the electronic device causes the electronic device to The command sending method to execute.

It can be understood that, in order to implement the above functions, the electronic device includes corresponding hardware and/or software modules that perform each function. In conjunction with the algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions in conjunction with the embodiments for each specific application, but such implementations should not be considered to be beyond the scope of this application.

This embodiment also provides a computer storage medium that stores computer instructions. When the computer instructions are run on an electronic device, the electronic device causes the electronic device to execute the above related method steps to implement the command sending method in the above embodiment.

This embodiment also provides a computer program product. When the computer program product is run on a computer, it causes the computer to perform the above related steps to implement the command sending method in the above embodiment.

In addition, the embodiment of the present application also provides a device. This device may be a chip, a component or a module. The device may include a connected processor and a memory. The memory is used to store computer execution instructions. When the device is running, the processing The device can execute computer execution instructions stored in the memory, so that the chip executes the command sending method in each of the above method embodiments.

Among them, the electronic equipment, computer storage media, computer program products or chips provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the corresponding methods provided above. The beneficial effects of the method will not be repeated here.

Through the description of the above embodiments, those skilled in the art can understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In practical applications, the above functions can be allocated to different modules according to needs. The functional module is completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined or can be integrated into another device, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separate. A component shown as a unit may be one physical unit or multiple physical units, that is, it may be located in one place, or it may be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or software functional units.

Any contents of various embodiments of this application, as well as any contents of the same embodiment, can be freely combined. Any combination of the above is within the scope of this application.

Integrated units may be stored in a readable storage medium if they are implemented in the form of software functional units and sold or used as independent products. Based on this understanding, the technical solutions of the embodiments of the present application are essentially or contribute to the existing technology, or all or part of the technical solution can be embodied in the form of a software product, and the software product is stored in a storage medium , including several instructions to cause a device (which can be a microcontroller, a chip, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

The steps of the methods or algorithms described in connection with the disclosure of the embodiments of this application can be implemented in hardware or by a processor executing software instructions. Software instructions can be composed of corresponding software modules. The software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, read only memory (Read Only Memory, ROM), erasable programmable read only memory ( Erasable Programmable ROM (EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), register, hard disk, removable hard disk, CD-ROM or any other form of storage media well known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage media may be located in an ASIC.

Those skilled in the art should realize that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media can be any available media that can be accessed by a general purpose or special purpose computer.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims (8)

1. A command transmitting method, applied to an electronic device, comprising:

determining whether a command to be sent to a kernel layer is a first command, wherein the first command is a command related to a multi-block operation, and the first command is a command sent to an eMMC device;

if yes, the shielding kernel layer automatically enables the function of a second command, wherein the second command is a command capable of stopping or interrupting the first command; the masking kernel layer automatically enables the function of the second command, comprising: setting a first transmission mode and a second transmission mode in the kernel layer, wherein in the first transmission mode, the kernel layer automatically enables the second command and does not enable the third command; in the second transmission mode, the kernel layer automatically enables the third command and does not enable the second command; the first transmission mode is adopted by the kernel layer when the first structure body is empty, the second transmission mode is adopted by the kernel layer when the first structure body is not empty, and the third command is a command CMD23 for setting the number of read-write blocks; packaging the third command into the first structure to obtain a first target structure; transmitting the first target structure to the kernel layer;

and sending the first command to a kernel layer.

2. The method of claim 1, wherein masking the functionality of the kernel layer to automatically enable the second command comprises:

and sending a closing instruction to the kernel layer, wherein the closing instruction is used for indicating the kernel layer to close the function of the second command capable of automatically enabling.

3. The method of claim 2, further comprising, after sending the first command to a kernel layer:

judging whether the kernel layer finishes executing the first command;

and after the kernel layer executes the first command, recovering the function of the kernel layer for automatically enabling the second command.

4. The method of claim 1, wherein sending the first command to a kernel layer comprises:

and sending the first command to a kernel layer through an ioctl function.

5. The method of claim 1, wherein the first command is a multi-block read command CMD18 or a multi-block write command CMD25 and the second command is a stop transmission command CMD12.

6. The method according to claim 2, wherein the first command is a combined command including a multi-block write command CMD25 and a command CMD23 for setting the number of read-write blocks, and the second command is a stop transmission command CMD12.

7. An electronic device, comprising:

a memory and a processor, the memory coupled with the processor;

the memory stores program instructions that, when executed by the processor, cause the electronic device to perform the command transmission method of any one of claims 1-6.

8. A computer readable storage medium comprising a computer program, characterized in that the computer program, when run on an electronic device, causes the electronic device to perform the command transmission method according to any of claims 1-6.