CN116800383B - Multi-channel communication method, device, equipment and medium - Google Patents

Abstract

The application provides a multi-channel communication method, a device, equipment and a medium, which are applied to a master device with N microsecond channels, wherein the master device can send downlink frames to a target slave device through the target microsecond channels, the target microsecond channels are in one-to-one correspondence with target uplink frame format information, and the master device can acquire the target uplink frame format information corresponding to the target microsecond channels; determining target analysis logic according to the target uplink frame format information; when an uplink frame sent by the target slave device is received, the uplink frame can be analyzed according to the predetermined target analysis logic, so that communication between the master device and the target slave device is realized. The target upstream frame format information of the upstream frame sent by the target slave device can be determined in advance according to the target microsecond channel so as to determine the target analysis logic, the master device is not required to be initialized, the target analysis logic is manually configured, and therefore the compatibility of the master device and the efficiency are improved.

Description

A multi-channel communication method, device, equipment and medium

Technical Field

The present application relates to the field of communication technology, and in particular to a multi-channel communication method, device, equipment and medium.

Background technique

Microsecond Channel (MSC), as a high-speed serial communication protocol, has been widely used in various scenarios, such as power device control and power management. The MSC protocol supports one master and multiple slaves, that is, the master device of MSC supports simultaneous connection of multiple slave devices, and the master device controls the slave devices through downlink frames. When the master device needs to communicate with a slave device, the master device can send a downlink frame to the specified slave device, and then the specified slave device returns an uplink frame to the master device to inform the master device of its own status.

At present, there are many kinds of slave devices supporting MSC protocol on the market, and the corresponding downlink frame formats for controlling these slave devices and the uplink frame formats for returning status are also different. For downlink frames used to control slave devices, the MSC master device can adapt to different types of slave devices by modifying the software configuration, but for uplink frames sent by different types of slave devices, the master device cannot automatically adapt and parse, and the compatibility of the MSC master device is poor, and the communication efficiency is low.

Summary of the invention

In view of this, the purpose of this application is to provide a multi-channel communication method, device, equipment and medium, which does not require the initialization of the main device and the manual configuration of the target parsing logic, which can improve the compatibility of the main device and improve the efficiency. The specific scheme is as follows:

On the one hand, the present application provides a multi-channel communication method, applied to a master device having N microsecond channels, the N microsecond channels are connected to N slave devices, one of the microsecond channels is connected to one of the slave devices, the N microsecond channels include a target microsecond channel, the N slave devices include a target slave device, N is an integer greater than 1, including:

When sending a downlink frame to the target slave device through the target microsecond channel, obtaining target uplink frame format information corresponding to the target microsecond channel;

Determining a target parsing logic according to the target uplink frame format information;

When receiving the uplink frame sent by the target slave device, the uplink frame is parsed according to the target parsing logic.

Specifically, before acquiring the target uplink frame format information corresponding to the target microsecond channel when sending the downlink frame to the target slave device through the target microsecond channel, the method further includes:

Corresponding uplink frame format information is configured for each of the microsecond channels; each of the uplink frame format information has a corresponding relationship with each uplink frame sent by the slave device.

Specifically, before determining the target parsing logic according to the target uplink frame format information, the method further includes:

Determine whether the target uplink frame format information is empty;

If the target uplink frame format information is not empty, the step of determining the target parsing logic according to the target uplink frame format information is performed; otherwise, a preset state flag is set in the uplink state register.

Specifically, the target uplink frame format information includes an uplink frame address segment length and an uplink frame data segment length.

Specifically, the downlink frame includes chip selection information, and the chip selection information is used to determine the target slave device.

On the other hand, an embodiment of the present application further provides a multi-channel communication device, including:

An acquisition unit, configured to acquire target uplink frame format information corresponding to the target microsecond channel when sending a downlink frame to the target slave device through the target microsecond channel; the target uplink frame format information has a corresponding relationship with the target uplink frame;

A determination unit, configured to determine a target parsing logic according to the target uplink frame format information;

The parsing unit is used to parse the uplink frame according to the target parsing logic when receiving the uplink frame sent by the target slave device.

Specifically, the device also includes:

The configuration unit is used to configure corresponding uplink frame format information for each of the microsecond channels; each of the uplink frame format information has a corresponding relationship with each uplink frame sent by the slave device.

Specifically, the device also includes:

A judging unit is used to judge whether the target uplink frame format information is empty; if the target uplink frame format information is not empty, the step of determining the target parsing logic according to the target uplink frame format information is executed; otherwise, a preset status flag is set in the uplink status register.

In another aspect, an embodiment of the present application provides a computer device, the computer device comprising a processor and a memory:

The memory is used to store program code and transmit the program code to the processor;

The processor is configured to execute the method described above according to the instructions in the program code.

On the other hand, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method described in the above aspects.

On the other hand, an embodiment of the present application provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the method described in the above aspects.

The embodiments of the present application provide a multi-channel communication method, apparatus, device and medium, which are applied to a master device having N microsecond channels, wherein the N microsecond channels are connected to N slave devices, and one microsecond channel is connected to one slave device, that is, the master device communicates with each slave device through a separate microsecond channel, the N microsecond channels include a target microsecond channel, and the N slave devices include a target slave device. The master device can send a downlink frame to the target slave device through the target microsecond channel, and the target microsecond channel corresponds to the target uplink frame format information one by one. The master device can obtain the target uplink frame format information corresponding to the target microsecond channel; determine the target parsing logic according to the target uplink frame format information; when receiving the uplink frame sent by the target slave device, the uplink frame can be parsed according to the predetermined target parsing logic to realize communication between the master device and the target slave device. In this way, the master device and the target slave device communicate through the target microsecond channel. The target uplink frame format information of the uplink frame sent by the target slave device can be determined in advance according to the target microsecond channel, so as to determine the target parsing logic. There is no need to initialize the master device and manually configure the target parsing logic, which can not only improve the compatibility of the master device, but also improve the efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram showing a flow chart of a multi-channel communication method provided in an embodiment of the present application;

FIG2 is a schematic diagram showing a MSC slave configuration channel register group provided by an embodiment of the present application;

FIG3 is a schematic diagram of the relationship between chip select information and a slave configuration channel register provided in an embodiment of the present application;

FIG4 is a schematic diagram of a process when a strobe channel is configured as empty according to an embodiment of the present application;

FIG5 is a schematic diagram of a flow chart of another multi-channel communication method provided in an embodiment of the present application;

FIG6 is a communication diagram of an MSC compatible with multiple slaves provided in an embodiment of the present application;

FIG7 is a structural block diagram of a multi-channel communication device provided in an embodiment of the present application;

FIG8 is a structural diagram of a computer device provided in an embodiment of the present application.

Detailed ways

In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below with reference to the accompanying drawings.

In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

As described in the background technology, the master device cannot automatically adapt and parse uplink frames sent by different types of slave devices. This is because when the master device is initialized, only one type of uplink frame structure parsing logic of the slave device is configured. If a slave device with other uplink frame formats appears during the communication process, the master device cannot parse the uplink frames of other frame formats without resetting and reinitializing. As a result, the MSC master device can only be connected to the same type of slave devices. The compatibility of the MSC master device is poor. The master device needs to be reset and reinitialized, and the uplink frames of other frame formats need to be reconfigured using software before communication can be carried out between the master device and the slave device that sends out other uplink frame formats, which wastes time and has low communication efficiency.

For example, when the master device needs to communicate with the slave device A, the master device can be initialized, and the parsing logic of the uplink frame a sent from the slave device A can be manually configured. Then the master device sends a downlink frame to the slave device A, and the slave device returns the uplink frame a. The master device parses the uplink frame a through the configured parsing logic to complete the communication. If the master device needs to communicate with the slave device B, the previously configured parsing logic of the uplink frame a is no longer applicable. The master device needs to be initialized again, and the parsing logic of the uplink frame b sent from the slave device B is reconfigured. In this way, the master device can parse the uplink frame b and complete the communication between the master device and the slave device B.

Based on the above technical problems, the embodiments of the present application provide a multi-channel communication method, apparatus, device and medium, which are applied to a master device having N microsecond channels, the N microsecond channels are connected to N slave devices, and one microsecond channel is connected to one slave device, that is, the master device communicates with each slave device through a separate microsecond channel, the N microsecond channels include a target microsecond channel, and the N slave devices include a target slave device. The master device can send a downlink frame to the target slave device through the target microsecond channel, and the target microsecond channel corresponds to the target uplink frame format information one by one. The master device can obtain the target uplink frame format information corresponding to the target microsecond channel; determine the target parsing logic according to the target uplink frame format information; when receiving the uplink frame sent by the target slave device, the uplink frame can be parsed according to the predetermined target parsing logic to realize communication between the master device and the target slave device. In this way, the master device and the target slave device communicate through the target microsecond channel. The target uplink frame format information of the uplink frame sent by the target slave device can be determined in advance according to the target microsecond channel, so as to determine the target parsing logic. There is no need to initialize the master device and manually configure the target parsing logic, which can not only improve the compatibility of the master device, but also improve the efficiency.

To facilitate understanding, a multi-channel communication method, apparatus, device and medium provided in an embodiment of the present application are described in detail below with reference to the accompanying drawings.

Referring to FIG1 , which is a flow chart of a multi-channel communication method provided in an embodiment of the present application, the method may include the following steps.

S101, when sending a downlink frame to a target slave device through a target microsecond channel, obtaining target uplink frame format information corresponding to the target microsecond channel.

In an embodiment of the present application, the method can be applied to a master device having N microsecond channels, where N is an integer greater than 1, and the N microsecond channels are connected to N slave devices, and one microsecond channel is connected to one slave device, that is, the master device communicates with each slave device through a separate microsecond channel. The number of N is determined according to the maximum number of slave devices that the MSC master device can support. The master device can be a microcontroller unit (MCU), also known as a single-chip microcomputer, and the slave device can be a downstream power device driven by the MCU, such as a power management chip similar to L9788.

The N microsecond channels may include a target microsecond channel, the N slave devices may include a target slave device, and the master device and the target slave device may communicate through the target microsecond channel.

Specifically, a corresponding uplink frame format can be set for each microsecond channel, and the uplink frame format is the uplink frame format sent by the slave device to which the microsecond channel is connected. The target microsecond channel corresponds to the target uplink frame format information, and the target uplink frame format information is the format information of the uplink frame sent by the target slave device. The target uplink frame format information may include the uplink frame address segment length and the uplink frame data segment length, that is, the number of bits in the uplink frame address segment and the number of bits in the uplink frame data segment.

Specifically, the master device may send a downlink frame to the target slave device through the target microsecond channel. The downlink frame is used to request the target slave device to report its own status. At this time, the master device may obtain the target uplink frame format information corresponding to the target microsecond channel.

In practical applications, a register group can be set for the master device, and the register group includes multiple registers, each register corresponds to each microsecond channel, and each register stores the configuration information of the corresponding microsecond channel, and the configuration information may include uplink frame format information and chip select information. Referring to FIG2, a schematic diagram of an MSC slave configuration channel register group provided in an embodiment of the present application is shown, in the Slave Config Channel Register Group, including Slave Config Channel0 Register (slave configuration channel register 0), Slave ConfigChannel1 Register (slave configuration channel register 1), Slave Config Channel2 Register (slave configuration channel register 2)...Slave Config ChannelN Register (slave configuration channel register N), and the Upstream Bit Number (uplink frame address segment length and uplink frame data segment length) is stored in each slave configuration channel register.

Specifically, referring to Figure 3, which is a schematic diagram of the relationship between chip select information and slave configuration channel registers provided in an embodiment of the present application, Chip Select 0 (chip select information 0) has a corresponding relationship with Slave Config Channel0 Register, Chip Select1 (chip select information 1) has a corresponding relationship with Slave Config Channel1 Register, and Chip Select N (chip select information N) has a corresponding relationship with Slave Config ChannelN Register.

In an embodiment of the present application, the downlink frame may include chip select information, which is used to determine the target slave device. After the target slave device is selected, the target slave device can receive the downlink frame, while other slave devices not selected by the chip select information cannot receive the downlink frame.

In an embodiment of the present application, when a downlink frame is sent to a target slave device through a target microsecond channel, before obtaining the target uplink frame format information corresponding to the target microsecond channel, the corresponding uplink frame format information can be configured for each microsecond channel. For example, after knowing the type of uplink frame sent by each slave device, the corresponding uplink frame format information can be manually configured for each MSC channel. In this way, each uplink frame format information has a corresponding relationship with each uplink frame sent by the slave device, so that the uplink frame format information corresponding to the MSC channel can be obtained subsequently according to the MSC channel and the corresponding relationship.

It can be understood that configuring the corresponding uplink frame format information for each microsecond channel can be completed when the master device is initialized once, without interrupting communication. Performing multiple initializations can improve communication efficiency.

S102: Determine a target parsing logic according to the target uplink frame format information.

In an embodiment of the present application, different slave devices may correspond to different uplink frame format information, and different uplink frame format information may have different parsing logics. The target parsing logic may be determined based on the target uplink frame format information, and the target parsing logic may be used to parse the uplink frame sent by the target device so that the master device and the slave device can communicate normally.

In a possible implementation, before determining the target parsing logic based on the target uplink frame format information, it can also be determined whether the target uplink frame format information is empty. If the target uplink frame format information is not empty, it means that the correct target uplink frame format information is configured in the target microsecond channel, then the step of determining the target parsing logic based on the target uplink frame format information is executed.

If the target uplink frame format information is empty, it means that the correct target uplink frame format information is not configured in the target microsecond channel, or the target uplink frame format information is not actually configured, and the target parsing logic cannot be determined subsequently, then the preset status flag can be set in the uplink status register. For example, the hardware sets the corresponding status flag in the uplink status register. In addition, an abnormal interrupt can be raised to notify the user.

Specifically, referring to Figure 4, a processing diagram when a selection channel is configured as empty is provided in an embodiment of the present application. In the Slave Config ChannelN Register slave configuration channel register N, when the uplink frame format information stored therein is 0, not only can the channel empty exception interrupt (Channel Empty Error Isr) be pulled up, but also the status flag Channel Empty can be set in the Upstream Status Register.

In another possible implementation, it is also possible to directly perform parsing without checking whether the target uplink frame format information is empty, and those skilled in the art may make a choice according to actual conditions.

S103, when receiving an uplink frame sent by the target slave device, parse the uplink frame according to the target parsing logic.

In an embodiment of the present application, after the master device sends a downlink frame to the target slave device, the target slave device can return an uplink frame to the master device. When the master device receives the uplink frame, the target parsing logic can be used to parse the uplink frame, thereby obtaining information about the target slave device. In this way, the master device and the target slave device communicate through a target microsecond channel, and the target uplink frame format information of the uplink frame sent by the target slave device can be pre-determined according to the target microsecond channel, so as to determine the target parsing logic. There is no need to initialize the master device and manually configure the target parsing logic, which can improve the compatibility of the master device and improve efficiency.

Specifically, referring to FIG. 5 , which is a flow chart of another multi-channel communication method provided by an embodiment of the present application, during initialization, while completing other configurations, uplink frame format information can be configured for each slave (slave device) channel. Then, the chip select information can select slave X as the target slave device. Next, it is determined whether the slave X channel is configured with uplink frame format information, that is, it is checked whether the uplink frame format information is empty. If the uplink frame format information is configured, the slave configuration channel corresponding to slave X is selected according to the chip select, the uplink frame format information of slave X is loaded, the target parsing logic is determined, and then the slave X uplink frame is received and parsed. If the slave X channel is not configured, it is set to the corresponding abnormal state and an abnormal interrupt is triggered.

Specifically, as shown in FIG6, a communication schematic diagram of an MSC compatible with multiple slaves provided by an embodiment of the present application, for the chip select signal EN0, it can correspond to the Slave Config Channel0 Register to perform MSC uplink frame format parsing. When the software selects to enable the corresponding chip select signal, the hardware automatically loads the uplink frame word length configuration in the slave configuration channel register associated with the chip select to parse the uplink frame content of the corresponding slave, and then the hardware immediately takes effect according to the new frame format configuration. Each channel corresponds to a separate slave, and saves the uplink frame format information and chip select information of the slave. When the slave is selected, the hardware automatically loads the uplink frame format information of the slave device in the channel, and immediately modifies the parsing method of the uplink frame format, so that the MSC host can perform corresponding parsing on the received uplink frame. If the corresponding channel configuration information of the currently selected slave is empty, an abnormal interrupt will be automatically triggered, and the hardware will set the corresponding error status bit. In this way, the MSC master device can be compatible with the communication of multiple slave devices with different uplink frame formats.

The embodiment of the present application provides a multi-channel communication method, which is applied to a master device having N microsecond channels, wherein the N microsecond channels are connected to N slave devices, and one microsecond channel is connected to one slave device, that is, the master device communicates with each slave device through a separate microsecond channel, the N microsecond channels include a target microsecond channel, and the N slave devices include a target slave device, the master device can send a downlink frame to the target slave device through the target microsecond channel, the target microsecond channel corresponds to the target uplink frame format information one by one, and the master device can obtain the target uplink frame format information corresponding to the target microsecond channel; determine the target parsing logic according to the target uplink frame format information; when receiving the uplink frame sent by the target slave device, the uplink frame can be parsed according to the pre-determined target parsing logic to realize the communication between the master device and the target slave device. In this way, the master device and the target slave device communicate through the target microsecond channel, and the target uplink frame format information of the uplink frame sent by the target slave device can be pre-determined according to the target microsecond channel, so as to determine the target parsing logic, without initializing the master device and manually configuring the target parsing logic, which can improve the compatibility of the master device and improve the efficiency.

Based on the above multi-channel communication method, the embodiment of the present application further provides a multi-channel communication device. Referring to FIG. 7 , a structural block diagram of a multi-channel communication device provided in the embodiment of the present application is shown. The device may include:

The acquisition unit 201 is used to acquire target uplink frame format information corresponding to the target microsecond channel when sending a downlink frame to the target slave device through the target microsecond channel; the target uplink frame format information has a corresponding relationship with the target uplink frame;

A determination unit 202, configured to determine a target parsing logic according to the target uplink frame format information;

The parsing unit 203 is configured to parse the uplink frame according to the target parsing logic when receiving the uplink frame sent by the target slave device.

Optionally, the device further comprises:

The configuration unit is used to configure corresponding uplink frame format information for each of the microsecond channels; each of the uplink frame format information has a corresponding relationship with each uplink frame sent by the slave device.

Optionally, the device further comprises:

A judging unit is used to judge whether the target uplink frame format information is empty; if the target uplink frame format information is not empty, the step of determining the target parsing logic according to the target uplink frame format information is executed; otherwise, a preset status flag is set in the uplink status register.

The embodiment of the present application provides a multi-channel communication device, wherein an acquisition unit is used to acquire target uplink frame format information corresponding to the target microsecond channel when sending a downlink frame to the target slave device through the target microsecond channel; the target uplink frame format information has a corresponding relationship with the target uplink frame; a determination unit is used to determine a target parsing logic according to the target uplink frame format information; and a parsing unit is used to parse the uplink frame according to the target parsing logic when receiving an uplink frame sent by the target slave device. In this way, the master device and the target slave device communicate through the target microsecond channel, and the target uplink frame format information of the uplink frame sent by the target slave device can be pre-determined according to the target microsecond channel, so as to determine the target parsing logic, without initializing the master device and manually configuring the target parsing logic, which can improve the compatibility of the master device and improve efficiency.

On the other hand, an embodiment of the present application provides a computer device. Referring to FIG8 , which is a structural diagram of a computer device provided by an embodiment of the present application, the computer device includes a processor 310 and a memory 320:

The memory 320 is used to store program codes and transmit the program codes to the processor 310;

The processor 310 is used to execute the method provided in the above embodiment according to the instructions in the program code.

The computer device may include a terminal device or a server, and the aforementioned apparatus may be configured in the computer device.

On the other hand, an embodiment of the present application further provides a storage medium, wherein the storage medium is used to store a computer program, and the computer program is used to execute the method provided by the above embodiment.

In addition, an embodiment of the present application also provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the method provided in the above embodiment.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by program instruction hardware, and the above program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the above storage medium can be at least one of the following media: read-only memory (English: Read-only Memory, abbreviated: ROM), RAM, magnetic disk or optical disk, etc. Various media that can store program codes.

Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

The above is only a preferred implementation of the present application. Although the present application has been disclosed as a preferred embodiment, it is not intended to limit the present application. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of protection of the technical solution of the present application.

Claims (10)

1. A multi-channel communication method, characterized in that it is applied to a master device having N microsecond channels, the N microsecond channels are connected to N slave devices, one microsecond channel is connected to one slave device, the N microsecond channels include a target microsecond channel, the N slave devices include a target slave device, N is an integer greater than 1, and includes: When sending a downlink frame to the target slave device through the target microsecond channel, obtaining target uplink frame format information corresponding to the target microsecond channel; Determining a target parsing logic according to the target uplink frame format information; When receiving the uplink frame sent by the target slave device, the uplink frame is parsed according to the target parsing logic. 2. The method according to claim 1, characterized in that, before acquiring the target uplink frame format information corresponding to the target microsecond channel when sending the downlink frame to the target slave device through the target microsecond channel, the method further comprises: Corresponding uplink frame format information is configured for each of the microsecond channels; each of the uplink frame format information has a corresponding relationship with each uplink frame sent by the slave device. 3. The method according to claim 1, characterized in that before determining the target parsing logic according to the target uplink frame format information, the method further comprises: Determine whether the target uplink frame format information is empty; If the target uplink frame format information is not empty, the step of determining the target parsing logic according to the target uplink frame format information is performed; otherwise, a preset state flag is set in the uplink state register. 4. The method according to any one of claims 1-3 is characterized in that the target uplink frame format information includes an uplink frame address segment length and an uplink frame data segment length. 5. The method according to any one of claims 1-3, characterized in that the downlink frame includes chip select information, and the chip select information is used to determine the target slave device. 6. A multi-channel communication device, comprising: An acquisition unit, configured to acquire target uplink frame format information corresponding to the target microsecond channel when sending a downlink frame to the target slave device through the target microsecond channel; the target uplink frame format information has a corresponding relationship with the target uplink frame; A determination unit, configured to determine a target parsing logic according to the target uplink frame format information; The parsing unit is used to parse the uplink frame according to the target parsing logic when receiving the uplink frame sent by the target slave device. 7. The device according to claim 6, characterized in that the device further comprises: The configuration unit is used to configure corresponding uplink frame format information for each of the microsecond channels; each of the uplink frame format information has a corresponding relationship with each uplink frame sent by the slave device. 8. The device according to claim 6, characterized in that the device further comprises: A judging unit is used to judge whether the target uplink frame format information is empty; if the target uplink frame format information is not empty, the step of determining the target parsing logic according to the target uplink frame format information is executed; otherwise, a preset status flag is set in the uplink status register. 9. A computer device, characterized in that the computer device comprises a processor and a memory: The memory is used to store program code and transmit the program code to the processor; The processor is configured to execute the method according to any one of claims 1 to 5 according to the instructions in the program code. 10. A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store a computer program, and the computer program is used to execute the method according to any one of claims 1 to 5.