CN115834432A - Data link detection method, device, equipment and storage medium - Google Patents

Abstract

The embodiment of the application provides a method, a device, equipment and a storage medium for detecting a data link, which are applied to a first device, wherein the first device is connected with a second device through a target bus, the target bus comprises a control signal line and at least two data signal lines, and the method comprises the following steps: determining a sampling time of at least one sampling period, and sampling the test data block in the at least two data signal lines based on the sampling time of the at least one sampling period; acquiring test data according to the test data blocks sampled in the at least two data signal lines aiming at the sampling time of each sampling period, and detecting whether the test data is correct or not; when the test data is correct, determining the sampling time of the sampling period as a first effective sampling time; and determining the signal transmission quality of at least two data signal lines according to the determined first effective sampling time. So as to improve the quality of the finished product.

Description

Data link detection method, device, equipment and storage medium

technical field

The present application relates to the technical field of communications, and in particular to a data link detection method, device, device and storage medium.

Background technique

In the circuit of the mobile device, an SDIO bus is usually used to connect the control end of the mobile device with an external communication module. Wherein, the SDIO bus generally includes one control signal line and four data signal lines. During the transmission of data on the data signal lines, in order to increase the transmission speed of the data, the data is usually divided into multiple data blocks, and the multiple data blocks are respectively transmitted on different data signal lines. Based on this, when designing the circuit, it is necessary to ensure that the length of each data line in the SDIO bus is equal, so that the data blocks between the control terminal and the external communication module can be synchronized, that is, the control terminal or the external communication module can pass four data lines. The signal line receives the correct data block at the same time, so as to have better integrity when transmitting the high-speed signal, so that the opposite end can obtain the corresponding signal more easily and accurately.

However, in practical applications, due to various factors, such as different welding points, noise interference, or unequal lengths of data lines, the transmission delay of data on different data signal lines is different, resulting in different data signals in one clock cycle. The time at which the lines can be synchronized during data transmission is reduced, and the time at which the modules that transmit data through the data signal line can correctly parse the data within one clock cycle is reduced, that is, the signal transmission quality of the data signal line has deteriorated. Based on this, it is necessary to test the signal transmission quality of the data signal lines between different modules of the mobile device during the production process of the mobile device, find out the mobile devices with poor signal transmission quality in the data signal line, prevent them from entering the market, and reduce the Finished product quality.

Contents of the invention

In view of this, the present application provides a data link detection method, device, equipment and storage medium, which are used to reduce the flow of problematic products into the market and improve the quality of finished products by detecting the signal transmission quality of data lines.

In the first aspect, the embodiment of the present application provides a data link detection method, which is applied to a first device, and the first device is connected to a second device through a target bus, wherein the target bus includes control signal lines and At least two data signal lines, the method includes:

determining a sampling time for at least one sampling period, and sampling test data blocks in at least two data signal lines based on the sampling time for at least one sampling period;

For the sampling time of each sampling period, according to the test data blocks sampled in the at least two data signal lines, obtain test data, and detect whether the test data is correct; when the test data is correct, set the sampling period The sampling time of is determined as the first effective sampling time;

According to the determined first effective sampling time, the signal transmission quality of the at least two data signal lines is determined.

Preferably, before sampling the test data block in the at least two data signal lines at the sampling time based on the at least one sampling period, the method further includes:

sending a test instruction message to the second device through the control signal line;

receiving a test response message sent by the second device through the control signal line.

Preferably, before sampling the test data block in at least two data signal lines at the sampling time based on the at least one sampling period, it further includes:

Determining that the transfer mode of the target bus is the first mode;

Sampling test data in the target data signal line based on the sampling time of the at least one sampling period; wherein the target signal line is any one of the at least two data signal lines;

For the sampling time of each sampling period, detect whether the test data sampled in the target data line is correct, and determine the sampling time corresponding to the correct test data as the second effective sampling time;

updating the transmission mode of the target bus to a second mode;

The sampling test data block in at least two data signal lines based on the sampling time of the at least one sampling period includes:

When the transmission mode of the target bus is the second mode, sampling test data blocks in at least two data signal lines based on the sampling time of the at least one sampling period;

The determining the signal transmission quality of the at least two data signal lines according to the determined first effective sampling time includes:

According to the determined first effective sampling time and the determined second effective sampling time, the signal transmission quality of the at least two data signal lines is determined.

Preferably, it also includes:

Obtain the preset sampling times of test data;

Obtaining the number of times the test data has been sampled, and detecting whether the number of times the test data has been sampled reaches the preset number of times of sampling the test data;

The determining the sampling time of at least one sampling period, and sampling the test data block based on the sampling time of the at least one sampling period includes:

When the sampling times of the test data do not reach the preset sampling times of the test data, determine the sampling time of the i-th sampling period; in the i-th sampling period, based on the sampling time of the i-th sampling period in the Sampling test data in at least two data signal lines; wherein, the value of i is the sum of the number of times sampled and 1;

For the sampling time of each sampling period, use the test data blocks sampled in the at least two data signal lines to obtain test data, and detect whether the test data is correct; when the test data is correct, the sampled The sampling time of the period determined as the first effective sampling time includes:

For the sampling time of the i-th sampling period, according to the test data blocks sampled in the at least two data signal lines, the test data is obtained, and whether the test data is correct; when the test data is correct, the i-th The sampling time of a sampling period is determined as the first effective sampling time;

When the test data is correct, after determining the sampling time of the i-th sampling period as the first effective sampling time, it also includes:

Update the number of times of sampling according to the value of i, and re-execute the step of obtaining the number of times of sampling of the test data, and detect whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data, and go to the step for The sampling time of the i-th sampling period is to obtain test data according to the test data blocks sampled in the at least two data signal lines, and detect whether the test data is correct; when the test data is correct, the i-th The sampling time of the sampling cycle is determined as the first effective sampling time until the number of times the test data has been sampled reaches the preset number of times of sampling the test data.

Preferably, when the sampling times of the test data do not reach the preset sampling times of the test data, determining the sampling time of the i-th sampling period includes:

Determining a sampling reference value according to the preset sampling times of the test data, and obtaining a first preset interval time of sampling time;

When the sampling times of the test data do not reach the preset sampling times of the test data, the sampling time of the i-th sampling period is determined according to the sampling reference value and the first preset interval time of the sampling time.

Preferably, when the sampling times of the test data do not reach the preset sampling times of the test data, determining the sampling time of the i-th sampling period includes:

Obtain a second preset interval time of the sampling time;

When the sampling times of the test data do not reach the preset sampling times of the test data, the sampling time of the i-th sampling period is determined according to the second preset interval time of the sampling time and the sampling time of the i-1th sampling period.

Preferably, the target bus includes: a secure digital input and output interface SDIO bus.

In the second aspect, the embodiment of the present application provides a data link detection method, which is applied to a second device, and the first device is connected to the second device through a target bus, wherein the target bus includes control signal lines and At least two data signal lines, the method includes:

dividing the test data into at least two test data blocks according to the at least two data signal lines;

The at least two test data blocks are respectively sent to the first device through the at least two data signal lines; wherein different data signal lines transmit different test data blocks.

Preferably, before dividing the test data into at least two test data blocks according to the at least two data signal lines, the method further includes:

receiving a test instruction message sent by the first device through the control signal line;

sending a test response message to the first device through the control signal line.

In a third aspect, the embodiment of the present application provides a data link detection device, which is applied to a first device, and the first device is connected to a second device through a target bus, wherein the target bus includes control signal lines and At least two data signal lines, the device comprising:

A processing unit, configured to determine a sampling time of at least one sampling period, and sample a test data block in at least two data signal lines based on the sampling time of the at least one sampling period;

The processing unit is further configured to obtain test data according to the test data blocks sampled in the at least two data signal lines for the sampling time of each sampling period, and detect whether the test data is correct; When correct, determine the sampling time of the sampling period as the first effective sampling time;

The determination unit is configured to determine the signal transmission quality of the at least two data signal lines according to the determined first effective sampling time.

In a fourth aspect, the embodiment of the present application provides a data link detection device, which is applied to a second device, and the first device is connected to the second device through a target bus, wherein the target bus includes control signal lines and At least two data signal lines, the device comprising:

a processing unit, configured to divide the test data into at least two test data blocks according to the at least two data signal lines;

The sending unit is configured to respectively send the at least two test data blocks to the first device through the at least two data signal lines; wherein different data signal lines transmit different test data blocks.

In the fifth aspect, the embodiment of the present application provides an electronic device, including a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, trigger The electronic device executes the method described in any one of the first aspect or the method described in any one of the second aspect.

In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium includes a stored program, wherein, when the program is running, the device where the computer-readable storage medium is located is controlled to execute the above-mentioned The method of any one of the first aspects or the method of any one of the second aspects.

Using the solution provided by the embodiment of the present application, at least one sampling time can be determined first, and the test data block is sampled in at least two data signal lines based on the at least one sampling time. For each sampling time, according to the sampling time in each The test data block sampled in the data signal line acquires test data, and checks whether the test data is correct. When the test data is correct, the sampling time corresponding to the correct test data is determined as the first effective sampling time. Since the number of the first effective sampling time is more, it means that different data signal lines can transmit signals at the same time, and the probability of correctly obtaining data is greater, that is, the signal transmission quality is better. Based on this, in this application In an embodiment, the signal transmission quality of at least two data signal lines can be determined according to the first effective sampling time, and the detection of the transmission quality of at least two data signal lines can be realized, so that the signal in at least two data signal lines can be found The transmission of poor quality products can reduce the probability of problematic products entering the market and improve the quality of finished products.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings that need to be used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative labor.

FIG. 1 is a schematic diagram of a scene of a data link detection method provided by an embodiment of the present application;

FIG. 2 is a schematic flowchart of a data link detection method provided by an embodiment of the present application;

FIG. 3a is a schematic diagram of another data link detection method provided by the embodiment of the present application;

FIG. 3b is a schematic diagram of another data link detection method provided by the embodiment of the present application;

FIG. 4a is a schematic diagram of another data link detection method provided by the embodiment of the present application;

FIG. 4b is a schematic diagram of another data link detection method provided by the embodiment of the present application;

FIG. 5 is a schematic flowchart of another data link detection method provided by the embodiment of the present application;

FIG. 6 is a schematic flowchart of another data link detection method provided by the embodiment of the present application;

FIG. 7 is a schematic flowchart of another data link detection method provided by the embodiment of the present application;

FIG. 8 is a schematic structural diagram of a data link detection device provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of another data link detection device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of another data link detection device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of another data link detection device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

In order to better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

It should be understood that the term "and/or" used herein is only an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which may mean that A exists alone, and A and B exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Before the specific introduction of the embodiment of the present application, the terms applied or possibly applied in the embodiment of the present application are firstly explained.

SDIO (Secure Digital Input and Output, safe digital input and output), an external interface.

CLK (Clock signal), clock signal.

CMD (Command line), control signal line.

DAT (Data line), data signal line.

In the circuit of the mobile device, an SDIO bus is usually used to connect the control end of the mobile device with an external communication module. Wherein, the SDIO bus generally includes one control signal line and four data signal lines. During the transmission of data on the data signal lines, in order to increase the transmission speed of the data, the data is usually divided into multiple data blocks, and the multiple data blocks are respectively transmitted on different data signal lines. Based on this, when designing the circuit, it is necessary to ensure that the length of each data line in the SDIO bus is equal, so that the data blocks between the control terminal and the external communication module can be synchronized, that is, the control terminal or the external communication module can pass four data lines. The signal line receives the correct data block at the same time, so as to have better integrity when transmitting the high-speed signal, so that the opposite end can obtain the corresponding signal more easily and accurately.

However, in practical applications, due to various factors, such as different welding points, noise interference, or unequal lengths of data lines, the transmission delay of data on different data signal lines is different, resulting in different data signals in one clock cycle. The time at which the lines can be synchronized during data transmission is reduced, and the time at which the modules that transmit data through the data signal line can correctly parse the data within one clock cycle is reduced. Refer to Figure 4b, which is the signal of the data signal line The transmission quality has deteriorated. Based on this, it is necessary to test the signal transmission quality of the data signal lines between different modules of the mobile device during the production process of the mobile device, find out the mobile devices with poor signal transmission quality in the data signal line, prevent them from entering the market, and reduce the Finished product quality.

In view of the above problems, the embodiment of the present application provides a data link detection method, device, equipment and storage medium, which can first determine at least one sampling time, and based on at least one sampling time, sample and test in at least two data signal lines The data block, for each sampling time, obtains test data according to the test data block sampled in each data signal line, and detects whether the test data is correct. When the test data is correct, the corresponding sampling time of the correct test data is determined as The first valid sampling time. Since the number of the first effective sampling time is more, it means that different data signal lines can transmit signals at the same time, and the probability of correctly obtaining data is greater, that is, the signal transmission quality is better. Based on this, in this application In an embodiment, the signal transmission quality of at least two data signal lines can be determined according to the first effective sampling time, and the detection of the transmission quality of at least two data signal lines can be realized, so that the signal in at least two data signal lines can be found The transmission of poor quality products can reduce the probability of problematic products entering the market and improve the quality of finished products. The details will be described below.

Referring to FIG. 1 , it is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in FIG. 1 , the electronic device includes a first device 10 and a second device 11 . The first device 10 and the second device 11 are connected through a target bus 12 . For example, the target bus is the SDIO bus. The target bus includes a control signal line 121 and at least two data signal lines 122 . Wherein, when the target bus is an SDIO bus, the SDIO bus includes four data signal lines 122 .

Among them, the first device 10 can be a processor, which is the control center of the storage device, and uses various interfaces and lines to connect various parts of the entire electronic device, by running or executing software programs and/or modules stored in the memory, and calling Data stored in memory to perform various functions of an electronic device and/or to process data. The processor may be composed of an integrated circuit (integrated circuit, IC), for example, may be composed of a single packaged IC, or may be composed of multiple packaged ICs connected with the same function or different functions. For example, the first device 10 may only include a central processing unit (central processing unit, CPU). In the embodiments of the present invention, the CPU may be a single computing core, or may include multiple computing cores.

The second device 11 may be other devices that communicate with the processor, for example, may be a wireless network communication device, or other devices that need to transmit data with the first device 10 through a data signal line.

In actual circuit design, it is usually required that at least two data signal lines between the first device 10 and the second device 11 have the same length, and the distance between the first device 10 and the second device 11 should not be too far, otherwise the signal transmission The quality is poor. In order to ensure the communication quality between the first device 10 and the second device 11 , the transmission quality of the data signal line between the first device 10 and the second device 11 may be detected. In this application, the quality of signal transmission between at least two data signal lines can be determined by detecting the time during which signals can be transmitted synchronously in at least two data signal lines between the first device 10 and the second device 11 within a sampling period.

Referring to FIG. 2 , it is a schematic flowchart of a method for detecting a data link provided by an embodiment of the present application. The detection method is applied to the first device 10 shown in FIG. 1 above. As shown in Figure 2, the method includes:

Step S201. Determine a sampling time of at least one sampling period, and sample test data blocks in at least two data signal lines based on the sampling time of at least one sampling period.

It should be understood that, during the transmission process of the data signal line, the data is transmitted in the form of an analog signal. Depending on the specific value of the transmitted data, the level signal of the analog signal is also different, for example, a high level signal or a low level signal. During the transmission of data blocks, there is a process of level signal switching, as shown in Figure 3a. When performing data analysis, the data analysis is usually performed according to whether the analog signal is a high level signal or a low level signal. During the switching process of the level signal, since it is impossible to analyze whether the level signal is a high-level signal or a low-level signal, this part of the data is invalid data. Therefore, in the data transmission process, there are valid data parts that can be parsed out by the device and invalid data parts that cannot be parsed out by the device in the data block transmitted by the data signal line, as shown in Figure 3b. When the device collects data in the data signal line, if the data collected at the current collection time is valid data, the data transmitted by the peer end can be correctly parsed; if the data collected at the current collection time is invalid data, it cannot be correctly parsed. The data transmitted by the peer. In a sampling period, the longer the time for collecting valid data, the greater the probability of obtaining valid data, and it can be considered that the signal quality transmitted by the data signal line is better. When the data is divided into multiple data blocks, which are transmitted simultaneously through different data signal lines, the longer the time for valid data to be collected simultaneously between different data signal lines in one sampling period, it means that the correct data is obtained. The greater the probability of the data transmitted by the terminal, the better the signal transmission quality between different data signal lines can be considered.

Exemplarily, assuming that the first device and the second device are connected through an SDIO bus, there are four data signal lines between the first device and the second device. In an ideal state, when the four data signal lines are of equal length, it can be considered that the acquisition time of valid data corresponding to the four data signal lines is exactly the same, as shown in FIG. 4 a . However, in actual implementation, due to various factors, there are different delays when transmitting data between different data signal lines, resulting in different acquisition times of valid data corresponding to different data signals, as shown in Figure 4b. Since the transmitted data is divided into different data blocks and transmitted through different data signal lines, when collecting data on four data signal lines, only when the four data signal lines collect valid data at the same time can the Correctly parse out the data sent by the peer. The longer it takes for the four data signal lines to collect valid data at the same time in a sampling period, the greater the probability of correctly obtaining the data transmitted by the opposite end, and it can be considered that the signal transmission quality between different data signal lines is better.

In the implementation of this application, in order to detect the signal transmission quality of the data signal line between the first device and the second device, the first part can be determined by detecting the acquisition time of valid data part simultaneously collected in different data signal lines within one sampling period. The signal transmission quality of the data signal line between the device and the second device. Since it can only be sampled once in a sampling period, and when data is collected at the same sampling moment in different sampling periods, the effective part or invalid part collected in different sampling periods is the same. Therefore, in order to detect the time when valid data is collected simultaneously on different data signal lines in a sampling period, multiple sampling periods can be used, and the sampling time of each sampling period is different to determine that valid data is simultaneously collected in different data signal lines part of the time.

Based on this, the first device needs to determine the sampling time of each sampling period. At this time, at least one sampling time can be determined according to the preset interval time of the sampling time, that is, the sampling time of at least one sampling period can be determined according to the preset interval time of the sampling time. time. Based on the sampling time of each sampling period, the test data block is sampled at the sampling time of each sampling period. Wherein, the preset interval time may be an interval time between sampling times of adjacent sampling periods, or may be a preset sampling reference time, and the preset interval time is an interval time between a sampling time and a sampling reference time. Certainly, the sampling time of each sampling period may also be determined in other ways, which is not limited in the present application.

Since it is necessary to determine the time when valid data is collected in different data signal lines within a sampling period, the sampling period can be divided into m sampling times, and the time interval between every two adjacent sampling times in the m sampling times is the same, where m is an integer greater than 0. Since each sampling period can only be sampled once, in order to verify which sampling time can collect valid data and which sampling time can collect invalid data in m sampling periods, you can use m sampling periods at different sampling times Collect data blocks. In this way, the sampling time of each sampling period in the m sampling periods can be determined.

It should be understood that m is a sampling number preset according to actual needs. The larger m is, the more accurate the month of acquisition time is. For example, m is 256, 128, 1024, etc.

As a possible implementation manner, when determining the sampling time of at least one sampling period, the first device may determine the sampling time of the current sampling period according to the sampling time of a previous sampling period. At this time, the first device may obtain a second preset interval time of the sampling time. The second preset interval time is a preset interval time of sampling time. At this point, the sampling time of the first sampling period needs to be set in advance. For example, the sampling time of the first sampling period may be preset as T/256, and the second preset interval time may be preset as T/256. In this way, when the sampling time of the first sampling period is determined to be T/256, the sampling time of the second sampling period can be determined to be 2T/256 according to the second preset interval time T/256, and the sampling time of the third sampling period can be determined to be 2T/256. The sampling time of the period is 3T/256, and the sampling time of the qth sampling period is qT/256, where q is an integer greater than 0 and not greater than 256, and T represents the sampling period. By separately determining the sampling time of each sampling period, data blocks can be collected in at least two data signal lines in each sampling period based on the sampling time of the sampling period.

As another possible implementation manner, when determining the sampling time of at least one sampling period, the first device may preset a reference time, which is a sampling reference value. The sampling time of each sampling period is determined relative to the sampling reference value. At this time, the first device may first determine the sampling reference value. And acquire the first preset interval time of the sampling time. The first preset interval time is an interval time between the sampling time and the sampling reference value. At this time, the first device may determine the sampling time of each sampling period according to the sampling reference value and the first preset interval time. For example, assuming that the preset sampling reference value is T/128 and the first preset interval time is T/128, the sampling time of the i-th sampling period is a+(i-1)*b, where a represents the sampling reference Value, b represents the first preset interval time. That is, the sampling time of the i-th sampling period is T/128+(i-1)*T/128.

After determining the sampling time of at least one sampling period, the first device performs sampling of the test data block in at least two data signals in each sampling period according to the corresponding sampling time based on the sampling time of at least one sampling period .

It should be noted that, when determining the sampling time of at least one sampling period, the first device may determine the sampling times of all sampling periods. It is also possible to determine only the sampling time of the current sampling period each time. After determining whether the sampling time of the current sampling period is the first effective sampling time, when entering the next sampling period, determine the sampling time of the next sampling period. This application is not limited to this.

Step S202, for the sampling time of each sampling period, obtain test data according to the test data blocks sampled in at least two data signal lines, and check whether the test data is correct; when the test data is correct, set the sampling time of the sampling period to Determined as the first effective sampling time.

In the embodiment of the present application, when performing quality inspection of the data signal lines between the first device and the second device, the second device can transmit test data to the first device through at least two data signal lines between the first device and the first device piece. Wherein, the second device may divide the test data into at least two test data blocks, and send the at least two test data blocks to the first device through at least two data signal lines respectively. When the first device collects data in at least two data signal lines, since the test data blocks transmitted in the at least two data signal lines are the data of different parts of the test data, it is necessary in the first device The data of different parts of the test data can be obtained only when the effective data part is collected in the signal line, and the test data is synthesized.

Based on this, the first device collects test data blocks in at least two data signals according to the sampling time of each sampling period, and after obtaining at least two collected data blocks, the first device parses the collected test data blocks, The position of each test data block in the test data is determined, and the test data is synthesized by using each test data block collected. In the embodiment of the present application, when the second device sends the test data to the first device, the test data is data in a preset fixed format. That is, the data in the data format used for testing. After the first device synthesizes the collected data blocks into test data, it needs to detect whether the test data is correct. At this time, the first device can detect whether the data format of the test data is data in a preset fixed format. The test data is correct. If not, it is determined that the test data is wrong.

When the first device determines that the test data is correct, it means that the test data blocks collected by the first device in at least two data signal lines are valid data parts, and the sampling time of the sampling period can be determined as the first valid time.

Alternatively, when the first device determines that the test data is wrong, it means that the test data blocks collected by the first device in at least two data signal lines have invalid data portions, and the sampling time of the sampling period can be determined as the invalid time.

As a possible implementation manner, in order to prevent the data blocks from being tampered with during transmission, the second device adds check information to each test data block when dividing the test data into at least two test data blocks. For example, a CRC check code is added to each test data block. At this time, after at least two data signal lines collect test data blocks based on the sampling time of the current sampling period, the first device needs to parse each test data block first, and perform a check based on the verification information carried in each test data block. The test data blocks are verified. If there is an error in the verification information of at least one test data block, it means that the currently collected test data block is incorrect. At this time, the sampling time of the current sampling period can be directly determined as an invalid time. Alternatively, if it is detected that the check information of each test data block is correct, the test data blocks may be synthesized into test data, and further checked whether the test data is definite. For a specific detection process, reference may be made to the foregoing description, and details are not repeated here.

Exemplarily, the first device is connected to the second device through four data signal lines. According to the sampling time of each sampling period, the first device collects test data blocks in the four data signal lines, which are respectively test data blocks a, b, c, and d. After the first device collects the test data blocks a, b, c, d, it can analyze and analyze the test data blocks a, b, c, d, and obtain the verification information in the test data blocks a, b, c, d, assuming The check information of the test data blocks a, b, c, and d is a CRC check code. The first device can respectively detect whether the CRC check codes of the test data blocks a, b, c, and d are correct. If the CRC check codes of the test data blocks a, b, c, and d are all correct, the first device can synthesize the test data according to the positions of the test data blocks in the test data. The first device may further detect whether the synthesized test data is data in a preset fixed format, and if it is data in a preset fixed format, then determine that the test data is correct, and at this time determine the sampling time of the sampling period as the first effective sampling time.

Based on the above process, the first device may determine whether the sampling time of each sampling period is the first effective sampling time.

Step S203. Determine the signal transmission quality of at least two data signal lines according to the determined first effective sampling time.

In the embodiment of the present application, after the first device determines whether the sampling time of each sampling period is the first valid sampling time, all first valid sampling times may be obtained. Since the first effective sampling time is the time when at least two data signal lines simultaneously collect a large effective data portion, the first device can determine the signal transmission quality of the at least two data signal lines according to all determined first effective sampling times.

As a possible implementation manner, the first device may determine the signal transmission quality of the at least two data signal lines according to a ratio between a total time length of all first valid sampling times and a sampling cycle time. For example, when the ratio of the total time length of all first effective sampling times to a sampling cycle time is greater than the first preset threshold, it indicates that the proportion of the first effective sampling time in the sampling cycle is relatively large, and at least two data signal lines can be determined The signal transmission quality is better. If the ratio of the total time length of all first effective sampling times to a sampling cycle time is not greater than the first preset threshold, it means that the proportion of the first effective sampling time in the sampling cycle is relatively small, and the signals of at least two data signal lines can be determined Transmission quality is poor.

As a possible implementation manner, the first device may also first determine the second effective sampling time. That is, when the first device and the second device use one data signal line for data transmission, when the first device determines that data transmission is performed through one data signal line, the corresponding collection time that can collect valid data is the second Effective sampling time. At this time, the first device may calculate the ratio between the total length of the first effective sampling time and the total length of the second effective sampling time, and determine the signal transmission quality of the at least two data signal lines according to the ratio. For example, when the proportion is greater than the second preset threshold, it indicates that the proportion of the first effective sampling time in the sampling period is relatively large, and it can be determined that the signal transmission quality of at least two data signal lines is relatively good. If the proportion is not greater than the second preset threshold, it means that the proportion of the first effective sampling time in the sampling period is relatively small, and it can be determined that the signal transmission quality of at least two data signal lines is poor.

In this way, at least one sampling time can be determined first, and test data blocks are sampled in at least two data signal lines based on at least one sampling time, and for each sampling time, according to the test data blocks sampled in each data signal line Acquire test data, and check whether the test data is correct, and determine the sampling time corresponding to the correct test data as the first effective sampling time when the test data is correct. Since the number of the first effective sampling time is more, it means that different data signal lines can transmit signals at the same time, and the probability of correctly obtaining data is greater, that is, the signal transmission quality is better. Based on this, in this application In an embodiment, the signal transmission quality of at least two data signal lines can be determined according to the first effective sampling time, and the detection of the transmission quality of at least two data signal lines can be realized, so that the signal in at least two data signal lines can be found The transmission of poor quality products can reduce the probability of problematic products entering the market and improve the quality of finished products.

Referring to FIG. 5 , it is a data link detection method provided by an embodiment of the present application. The method is applied to the second device described in FIG. 1 . Wherein, the first device is connected to the second device through a target bus, wherein the target bus includes a control signal line and at least two data signal lines. As shown in Figure 5, the method includes:

Step S501. Divide test data into at least two test data blocks according to at least two data signal lines.

In the embodiment of the present application, the second device needs to send test data to the first device. In order to improve the sending speed of data, when the second device transmits data to the first device, it is usually necessary to divide the data into different data blocks, and transmit different data blocks through different data signal lines. Therefore, the second device may divide the test data in a preset fixed format into at least two test data blocks according to the number of at least two data signal lines.

As a possible implementation manner, the number of test data blocks is the same as the number of at least two data signal lines.

For example, there are 4 data signal lines between the second device and the first device, assuming that the test data in the preset fixed format is 8 bytes, at this time, the second device can divide the 8-byte test data into four 2-word Section's test data block.

As a possible implementation manner, in order to test that the data block is tampered during the transmission process of the data signal line, the second device may add check information, such as a CRC check code, to each test data block. At this time, each test data block carries a CRC check code.

Step S502, sending the at least two test data blocks to the first device respectively through at least two data signal lines.

Wherein, different data signal lines transmit different test data blocks.

In the embodiment of the present application, after the second device divides the test data into different test data blocks, it may respectively send the test data blocks to the first device through different data signal lines. Wherein, different test data blocks are transmitted through different data signal lines.

Referring to FIG. 6 , it is a schematic flowchart of a method for detecting a data link provided by an embodiment of the present application. As shown in Figure 6, the method includes:

Step S601, the first device acquires a preset number of sampling times of test data.

In the embodiment of the present application, the number of test data collections is the number of sampling times divided by one sampling period. The first device can obtain a preset sampling number of test data. The first device may acquire the number of samples in response to a user's setting operation. The number of sampling times may be preset or set by default, and stored in the storage device, and the first device may acquire the preset sampling times from the storage device.

Step S602, the first device acquires the number of times of sampling of the test data, and detects whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data.

In the embodiment of the present application, after the first device acquires the preset sampling times of the test data, it needs to detect whether the current sampling times have reached the preset sampling times. At this time, the first device acquires the number of times of sampling of the test data, compares the number of times of sampling of the test data with the preset number of samples, and detects whether the number of times of sampling of the test data reaches the number of times of preset sampling of the test data.

It should be noted that the first device performs different steps according to different detection results. When the sampled test data reaches the preset number of times, step S610 is directly executed. If the sampled test data has not reached the preset number of times, The number of times is set, and it is necessary to sample the test data. At this time, the following step S603 is performed.

Step S603, the first device determines a sampling time of at least one sampling period.

In the embodiment of the present application, when the sampling times of the test data do not reach the preset sampling times of the test data, the sampling time of the i-th sampling period is determined.

Among them, the value of i is the sum of the number of samples and 1.

That is, when the first device determines that the number of times the test data has been sampled does not reach the preset number of samples of the test data, it indicates that it is necessary to continue collecting the test data. That is to say, when the sampling period is divided into m sampling times, the preset number of sampling times is m times. When the number of times the first device has sampled the test data does not reach the preset number of samples of the test data, it means that the sampling period of the first device for sampling the test data does not reach m sampling periods. At this point, the first device needs to collect. When the current sampling period is the i-th sampling period, the first device needs to first determine the sampling time of the i-th sampling period.

As a possible implementation, when the number of times the test data has been sampled does not reach the preset number of samples of the test data, determining the sampling time of the i-th sampling cycle includes: determining the sampling reference value according to the preset number of samples of the test data , and obtain the first preset interval time of the sampling time; when the number of times the test data has been sampled does not reach the preset number of sampling times of the test data, according to the sampling reference value and the first preset interval time of the sampling time, determine the i-th The sampling time of sampling period.

In the embodiment of the present application, the first preset interval time is the time interval between the sampling time and the sampling reference value. The sampling time of each sampling period is determined based on the sampling reference time. When the first device determines that the sampling times of the test data have not reached the preset sampling times of the test data, when the current sampling period is the i-th sampling period, it needs to first determine the sampling time of the i-th sampling period. At this time, the first device can determine the sampling reference value according to the preset sampling times of the test data, that is, the sampling reference value can be determined as the same time value as the preset sampling times, for example, the sampling reference value can be determined as T/preset Set the number of samples. After determining the sampling reference value, the first device may determine the sampling time of each cycle according to the first preset interval time. For example, the first preset interval time includes: (p-1)×T/m, wherein, p represents the pth sampling period, and p is an integer greater than 0; T represents the sampling period, and m represents the preset sampling of test data frequency. When determining the sampling time of the i-th sampling period, the first device can calculate the sampling time of the i-th sampling period according to the sampling reference value and the first preset interval time. At this time, the first device determines that the sampling time of the i-th sampling period is T/m+(p-1)×T/m. For details, refer to step S201, which will not be repeated here.

It should be understood that the above-mentioned first preset interval time is related to the sampling period, and gradually becomes larger as the sampling period increases.

As another possible implementation, when the sampling times of the test data do not reach the preset sampling times of the test data, determining the sampling time of the i-th sampling period includes:

Obtain the second preset interval time of the sampling time; when the number of times the test data has been sampled does not reach the preset number of sampling times of the test data, according to the second preset interval time of the sampling time and the sampling time of the i-1th sampling cycle , to determine the sampling time of the i-th sampling period.

That is, the second preset interval time is a time interval between sampling times in two adjacent sampling periods. At this time, the first device may determine the sampling time of the current sampling period according to the sampling time of the previous sampling period and the second preset interval time. That is to say, the first device only needs to obtain the sampling time of the i-1th sampling period and the second preset interval time to calculate the sampling time of the i-th sampling period. The specific determination process may refer to step S201 and will not be repeated here.

It should be understood that the second preset interval time may be fixed, which is only the interval time of the sampling time.

Through the above different methods, the first device can determine the sampling time of the i-th sampling period.

Step S604, in the i-th sampling period, the first device sends a test instruction message to the second device through the control signal line. The second device receives the test instruction message sent by the first device through the control signal line.

Wherein, the test command message is used to instruct the second device to send test data.

In the embodiment of the present application, in the i-th sampling period, the first device needs to obtain test data, and the first device needs to send a test instruction message to the second device to inform the second device to send test data to the first device. The second device receives the test instruction message through the control signal line.

For example, when entering a system download process, the first device needs to automatically detect the quality of data transmission with the second device. At this time, the first device needs to send a test instruction message to the second device in the i-th sampling period during the test, so as to inform the second device to send test data. The second device receives the test instruction message through the control signal line.

Step S605, the second device sends a test response message to the first device through the control signal line. The first device receives the test response message sent by the second device through the control signal line.

In the embodiment of the present application, after receiving the test instruction message transmitted by the first device through the control signal line, the second device may know through the test instruction message that it needs to send test data to the first device. When the second device can send test data to the first device, it sends a test response message to the first device through the control signal line. After receiving the test response message through the control signal line, the first device learns that the second device can send test data. At this time, the first device may perform sampling of the test data block when the sampling time of the sampling period arrives.

Step S606, the second device divides the test data into at least two test data blocks according to the at least two data signal lines.

For details, refer to step S501, which will not be repeated here.

Step S607, the second device respectively sends at least two test data blocks to the first device through at least two data signal lines. The first device samples the test data block in at least two data signal lines based on the sampling time of the i-th sampling period.

Wherein, different data signal lines transmit different test data blocks.

For details, reference may be made to step S502 and step S201, which will not be repeated here.

Step S608, for the sampling time of the i-th sampling period, obtain test data according to the test data blocks sampled in at least two data signal lines, and check whether the test data is correct; when the test data is correct, set the i-th sampling period The sampling time of is determined as the first effective sampling time.

For details, refer to step S202, which will not be repeated here.

Step S609, the first device updates the number of times of sampling according to the value of i, and re-executes the step of obtaining the number of times of sampling of the test data, and detects whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data. The sampling time of a sampling cycle, according to the test data blocks sampled in at least two data signal lines, obtains the test data, and detects whether the test data is correct; when the test data is correct, the sampling time of the i sampling cycle is determined as the first sampling time. an effective sampling time until the number of samples of the test data reaches the preset number of samples of the test data.

In the embodiment of the present application, after the first device samples the test data in the i-th sampling period, and determines whether the sampling time of the i-th sampling period is the first effective sampling time, the current i-th sampling period can end , into a sampling period. At this time, the first device updates the number of samples taken. The first device may automatically add 1 to the number of samples obtained in the above step S602, or may directly update the value of i to the sampled data. After the number of samples has been updated, step S602 to step S608 may be re-executed until the number of samples has reached the preset number of samples. At this point, it may be completed to determine which of the m sampling times is the first valid sampling time and which is the invalid time.

Step S610, the first device determines the signal transmission quality of at least two data signal lines according to the determined first effective sampling time.

For details, refer to step S203 and will not repeat it here.

Referring to FIG. 7 , it provides a schematic flowchart of a method for detecting a data link according to an embodiment of the present application. Compared with the method shown in FIG. 6 , the embodiment of the present application adds related steps of determining an effective sampling time corresponding to a data signal line. As shown in Figure 7, the method includes:

Step S701, the first device determines that the transmission mode of the target bus is the first mode.

In the embodiment of the present application, the target bus has two transmission modes, namely the first mode and the second mode. When the transmission mode of the target bus is the first mode, data is transmitted between the first device and the second device through the target data signal line. Wherein, the target data signal line may be any one of the at least two data signal lines. It may also be a preset data signal line among the at least two data signal lines. When the transmission mode of the target bus is the second mode, data is transmitted between the first device and the second device through at least two data signal lines.

In order to more accurately judge the signal transmission quality of at least two data signal lines between the first device and the second device. The second effective sampling time in one sampling period can be determined first when a data signal line between the first device and the second device transmits data. Then when it is determined that at least two data signal lines between the first device and the second device transmit data at the same time, the first effective sampling time in one sampling period is determined according to the first effective sampling time and the second effective sampling time at least The signal transmission quality of the two data signal lines. Based on this, it is necessary to first determine the second effective sampling time in one sampling period when a data signal line between the first device and the second device transmits data. At this time, the first device may set the transmission mode of the target bus to the first mode, so that the test data is transmitted between the first device and the second device through the target data signal line.

Step S702, the first device acquires a preset number of sampling times of test data.

For details, refer to step S601, which will not be repeated here.

Step S703, the first device obtains the number of times of sampling of the test data, and detects whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data.

For details, refer to step S602, which will not be repeated here.

Step S704, the first device determines a sampling time of at least one sampling period.

For details, refer to step S603, which will not be repeated here.

Step S705, in the i-th sampling period, the first device sends a test instruction message to the second device through the control signal line. The second device receives the test instruction message sent by the first device through the control signal line.

Wherein, the test instruction message carries the transmission mode of the target bus, and the transmission mode of the target bus is the first mode.

In the embodiment of the present application, when the first device sends a test command message to the second device, the transmission mode of the target bus may be added to the message, so that the second device transmits data according to the specified transmission mode. At this time, the second device obtains the test command message, and parses the test command message to obtain the transmission mode of the target bus carried in it. For details, refer to step S604, which will not be repeated here.

Step S706, the second device sends a test response message to the first device through the control signal line. The first device receives the test response message sent by the second device through the control signal line.

For details, refer to step S605, which will not be repeated here.

Step S707, the second device sends the test data to the first device through the target data signal line. The first device samples test data in the target data signal line based on the sampling time of the i-th sampling period.

In the embodiment of the present application, after receiving the test instruction message, the second device needs to send test data to the first device. At this time, since the transmission mode of the target bus is the first mode, the second device can send the test data to the first device through the target data signal line. The first device samples test data in the target data signal line at the sampling time of the i-th sampling period.

Step S708 , the first device detects whether the test data sampled in the target data line is correct for the sampling time of the i-th sampling period, and determines the sampling time corresponding to the correct test data as the second effective sampling time.

In the embodiment of the present application, after the first device acquires the test data, it needs to check whether the test data is correct, and when it detects that the test data is correct, the sampling time of the i-th sampling period can be determined as the second effective sampling time. Whether the first device detection test data is correct can refer to step S608 and will not be repeated here.

Step S709, update the number of times of sampling according to the value of i, and re-execute the step of obtaining the number of times of sampling of the test data, and check whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data, and go to the step for the ith The sampling time of the sampling period is to obtain test data according to the test data blocks sampled in at least two data signal lines, and detect whether the test data is correct; when the test data is correct, determine the sampling time of the i-th sampling period as the first Effective sampling time until the number of samples of test data reaches the preset number of samples of test data.

For details, refer to step S609, which will not be repeated here.

Step S710, when the number of times the test data has been sampled reaches the preset number of samples of the test data, the first device updates the transmission mode of the target bus to the second mode.

In this embodiment of the application, when the transmission mode of the target bus is the first mode, if the number of times the test data has been sampled reaches the preset number of sampling times of the test data, when the transmission mode of the target bus is the second mode, one sampling cycle Determination of the effective sampling time in . At this time, the first device sets the transfer mode of the target bus to the second mode.

Step S711, the first device acquires a preset number of sampling times of test data.

For details, refer to step S601, which will not be repeated here.

Step S712, the first device obtains the number of times of sampling of the test data, and detects whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data.

For details, refer to step S602, which will not be repeated here.

Step S713, the first device determines a sampling time of at least one sampling period.

For details, refer to step S603, which will not be repeated here.

Step S714, in the i-th sampling period, the first device sends a test instruction message to the second device through the control signal line. The second device receives the test instruction message sent by the first device through the control signal line.

Wherein, the test command message is used to instruct the second device to send test data.

For details, refer to step S604, which will not be repeated here.

Step S715, the second device sends a test response message to the first device through the control signal line. The first device receives the test response message sent by the second device through the control signal line.

For details, refer to step S605, which will not be repeated here.

Step S716, the second device divides the test data into at least two test data blocks according to the at least two data signal lines.

For details, refer to step S606, which will not be repeated here.

Step S717, the second device respectively sends at least two test data blocks to the first device through at least two data signal lines. The first device samples the test data block in at least two data signal lines based on the sampling time of the i-th sampling period.

Wherein, different data signal lines transmit different test data blocks.

For details, refer to step S607, which will not be repeated here.

Step S718, for the sampling time of the i-th sampling period, obtain test data according to the test data blocks sampled in at least two data signal lines, and check whether the test data is correct; when the test data is correct, set the i-th sampling period The sampling time of is determined as the first effective sampling time.

For details, refer to step S608, which will not be repeated here.

Step S719, the first device updates the number of times of sampling according to the value of i, and re-executes the step to obtain the number of times of sampling of the test data, and detects whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data. The sampling time of a sampling cycle, according to the test data blocks sampled in at least two data signal lines, obtains the test data, and detects whether the test data is correct; when the test data is correct, the sampling time of the i sampling cycle is determined as the first sampling time. an effective sampling time until the number of samples of the test data reaches the preset number of samples of the test data.

For details, refer to step S609, which will not be repeated here.

Step S720, the first device determines the signal transmission quality of at least two data signal lines according to the determined first effective sampling time.

For details, refer to step S203 and will not repeat it here.

Referring to FIG. 8 , it is a schematic structural diagram of an apparatus for detecting a data link provided by an embodiment of the present application. The detection device is applied to a first device, and the first device is connected to a second device through a target bus, wherein the target bus includes a control signal line and at least two data signal lines. As shown in Figure 8, the detection device includes:

The processing unit 801 is configured to determine a sampling time of at least one sampling period, and sample test data blocks in at least two data signal lines based on the sampling time of at least one sampling period.

The processing unit 801 is also used to obtain test data according to the test data blocks sampled in at least two data signal lines for the sampling time of each sampling period, and detect whether the test data is correct; when the test data is correct, the sampled The sampling time of the period is determined as the first effective sampling time.

The determining unit 802 is configured to determine the signal transmission quality of at least two data signal lines according to the determined first effective sampling time.

As a possible implementation, as shown in Figure 9, the above-mentioned detection device also includes:

The sending unit 803 is configured to send a test instruction message to the second device through the control signal line.

The receiving unit 804 is configured to receive the test response message sent by the second device through the control signal line.

As a possible implementation manner, the determining unit 802 is further configured to determine that the transmission mode of the target bus is the first mode.

The processing unit 801 is further configured to sample test data in the target data signal line based on the sampling time of at least one sampling period; and for the sampling time of each sampling period, detect whether the test data sampled in the target data line is correct, and The sampling time corresponding to the correct test data is determined as the second effective sampling time.

Wherein, the target signal line is any one of the at least two data signal lines.

The processing unit 801 is further configured to update the transmission mode of the target bus to the second mode.

The processing unit 801 is specifically configured to sample test data blocks in at least two data signal lines based on a sampling time of at least one sampling period when the transmission mode of the target bus is the second mode.

The determining unit 802 is specifically configured to determine the signal transmission quality of at least two data signal lines according to the determined first effective sampling time and the determined second effective sampling time.

As a possible implementation, the processing unit 801 is also configured to obtain the preset sampling times of the test data; and obtain the sampled times of the test data, and detect whether the sampled times of the test data reach the preset sampling times of the test data .

The processing unit 801 is specifically configured to determine the sampling time of the i-th sampling period when the number of times the test data has been sampled does not reach the preset number of sampling times of the test data; in the i-th sampling period, based on the i-th sampling period The sampling time samples test data in at least two data signal lines. Among them, the value of i is the sum of the number of samples and 1.

For the sampling time of the i-th sampling period, obtain test data according to the test data blocks sampled in at least two data signal lines, and detect whether the test data is correct; when the test data is correct, set the sampling time of the i-th sampling period to Determined as the first effective sampling time.

The processing unit 801 is further configured to update the number of times of sampling according to the value of i, and re-execute the step of obtaining the number of times of sampling of the test data, and detect whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data, to step For the sampling time of the i-th sampling period, obtain test data according to the test data blocks sampled in at least two data signal lines, and detect whether the test data is correct; when the test data is correct, set the sampling time of the i-th sampling period to It is determined as the first effective sampling time until the number of times the test data has been sampled reaches the preset number of samples of the test data.

As a possible implementation, the processing unit 801 is specifically configured to determine the sampling reference value according to the preset sampling times of the test data, and obtain the first preset interval time of the sampling time; When testing the preset sampling times of the data, the sampling time of the i-th sampling period is determined according to the sampling reference value and the first preset interval time of the sampling time.

As a possible implementation, the processing unit 801 is specifically configured to obtain the second preset interval time of the sampling time; The second preset interval time and the sampling time of the i-1 sampling period determine the sampling time of the i sampling period.

As a possible implementation manner, the target bus includes: a secure digital input and output interface SDIO bus.

Referring to FIG. 10 , it is a schematic structural diagram of a data link detection device provided by an embodiment of the present application. The detection device is applied to a second device, and the first device is connected to the second device through a target bus, wherein the target bus includes a control signal line and at least two data signal lines. As shown in Figure 10, the detection device includes:

The processing unit 1001 is configured to divide the test data into at least two test data blocks according to at least two data signal lines.

The sending unit 1002 is configured to respectively send at least two test data blocks to the first device through at least two data signal lines. Wherein, different data signal lines transmit different test data blocks.

As a possible implementation, as shown in Figure 11, the detection device further includes:

The receiving unit 1003 is configured to receive the test instruction message sent by the first device through the control signal line.

The sending unit 1002 is further configured to send a test response message to the first device through the control signal line.

Corresponding to the foregoing embodiments, the present application further provides an electronic device. FIG. 12 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. The electronic device 1200 may include: a processor 1201 , a memory 1202 and a communication unit 1203 . These components communicate through one or more buses. Those skilled in the art can understand that the structure of the server shown in the figure does not constitute a limitation to the embodiment of the present invention. It can be a bus structure or a star structure , may also include more or fewer components than shown, or combine certain components, or have different component arrangements.

Wherein, the communication unit 1203 is configured to establish a communication channel, so that the storage device can communicate with other devices. Receive user data from other devices or send user data to other devices.

The processor 1201, as the control center of the storage device, uses various interfaces and lines to connect various parts of the entire electronic device, and runs or executes software programs and/or modules stored in the memory 1202, and calls stored in the memory data to perform various functions of electronic devices and/or process data. The processor may be composed of an integrated circuit (integrated circuit, IC), for example, may be composed of a single packaged IC, or may be composed of multiple packaged ICs connected with the same function or different functions. For example, the processor 1201 may only include a central processing unit (central processing unit, CPU). In the embodiments of the present invention, the CPU may be a single computing core, or may include multiple computing cores.

The memory 1202 is used to store the execution instructions of the processor 1201. The memory 1202 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.

When the execution instructions in the memory 1202 are executed by the processor 1201, the electronic device 1200 is enabled to execute some or all of the steps in the embodiment shown in FIG. 7 .

In a specific implementation, the present invention also provides a computer storage medium, wherein the computer storage medium can store a program, and when the program is executed, it can include part or all of the embodiments of the data link detection method provided by the present invention. step. The storage medium may be a magnetic disk, an optical disk, a read-only memory (read-only memory, ROM) or a random access memory (random access memory, RAM), etc.

Those skilled in the art can clearly understand that the technologies in the embodiments of the present invention can be implemented by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the essence of the technical solutions in the embodiments of the present invention or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in storage media, such as ROM/RAM , magnetic disk, optical disk, etc., including several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of the present invention.

For the same and similar parts among the various embodiments in this specification, refer to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and for relevant details, please refer to the description in the method embodiment.

Claims (13)

1. A detection method for a data link, characterized in that it is applied to a first device, and the first device is connected to a second device through a target bus, wherein the target bus includes a control signal line and at least two data lines signal lines, the method comprising: determining a sampling time for at least one sampling period, and sampling test data blocks in at least two data signal lines based on the sampling time for at least one sampling period; For the sampling time of each sampling period, according to the test data blocks sampled in the at least two data signal lines, obtain test data, and detect whether the test data is correct; when the test data is correct, set the sampling period The sampling time of is determined as the first effective sampling time; According to the determined first effective sampling time, the signal transmission quality of the at least two data signal lines is determined. 2. The method according to claim 1, wherein, before sampling a test data block in the at least two data signal lines at the sampling time based on the at least one sampling cycle, further comprising: sending a test instruction message to the second device through the control signal line; receiving a test response message sent by the second device through the control signal line. 3. The method according to claim 1, further comprising: before sampling a test data block in at least two data signal lines at the sampling time based on the at least one sampling period: Determining that the transfer mode of the target bus is the first mode; Sampling test data in the target data signal line based on the sampling time of the at least one sampling period; wherein the target signal line is any one of the at least two data signal lines; For the sampling time of each sampling period, detect whether the test data sampled in the target data line is correct, and determine the sampling time corresponding to the correct test data as the second effective sampling time; updating the transmission mode of the target bus to a second mode; The sampling test data block in at least two data signal lines based on the sampling time of the at least one sampling period includes: When the transmission mode of the target bus is the second mode, sampling test data blocks in at least two data signal lines based on the sampling time of the at least one sampling period; The determining the signal transmission quality of the at least two data signal lines according to the determined first effective sampling time includes: According to the determined first effective sampling time and the determined second effective sampling time, the signal transmission quality of the at least two data signal lines is determined. 4. The method according to claim 1, further comprising: Obtain the preset sampling times of test data; Obtaining the number of times the test data has been sampled, and detecting whether the number of times the test data has been sampled reaches the preset number of times of sampling the test data; The determining the sampling time of at least one sampling period, and sampling the test data block based on the sampling time of the at least one sampling period includes: When the sampling times of the test data do not reach the preset sampling times of the test data, determine the sampling time of the i-th sampling period; in the i-th sampling period, based on the sampling time of the i-th sampling period in the Sampling test data in at least two data signal lines; wherein, the value of i is the sum of the number of times sampled and 1; For the sampling time of each sampling period, use the test data blocks sampled in the at least two data signal lines to obtain test data, and detect whether the test data is correct; when the test data is correct, the sampled The sampling time of the period determined as the first effective sampling time includes: For the sampling time of the i-th sampling period, according to the test data blocks sampled in the at least two data signal lines, the test data is obtained, and whether the test data is correct; when the test data is correct, the i-th The sampling time of a sampling period is determined as the first effective sampling time; When the test data is correct, after determining the sampling time of the i-th sampling period as the first effective sampling time, it also includes: Update the number of times of sampling according to the value of i, and re-execute the step of obtaining the number of times of sampling of the test data, and detect whether the number of times of sampling of the test data reaches the preset number of times of sampling of the test data, and go to the step for The sampling time of the i-th sampling period is to obtain test data according to the test data blocks sampled in the at least two data signal lines, and detect whether the test data is correct; when the test data is correct, the i-th The sampling time of the sampling period is determined as the first effective sampling time until the number of times the test data has been sampled reaches the preset number of times the test data has been sampled. 5. The method according to claim 4, wherein, when the number of samples of the test data does not reach the preset number of samples of the test data, determining the sampling time of the i-th sampling cycle includes: Determining a sampling reference value according to the preset sampling times of the test data, and obtaining a first preset interval time of sampling time; When the sampling times of the test data do not reach the preset sampling times of the test data, the sampling time of the i-th sampling period is determined according to the sampling reference value and the first preset interval time of the sampling time. 6. The method according to claim 4, wherein, when the number of times of sampling of the test data does not reach the preset number of times of sampling of the test data, determining the sampling time of the i-th sampling period comprises: Obtain a second preset interval time of the sampling time; When the number of times that the test data has been sampled does not reach the preset number of samples of the test data, according to the second preset interval time of the sampling time and the sampling time of the i-1th sampling cycle, determine the sampling of the i-th sampling cycle time. 7. The method according to any one of claims 1-6, wherein the target bus comprises: a secure digital input and output interface SDIO bus. 8. A detection method for a data link, characterized in that it is applied to a second device, and the first device is connected to the second device through a target bus, wherein the target bus includes a control signal line and at least two data lines signal lines, the method comprising: dividing the test data into at least two test data blocks according to the at least two data signal lines; The at least two test data blocks are respectively sent to the first device through the at least two data signal lines; wherein, different data signal lines transmit different test data blocks. 9. The method according to claim 8, wherein, before said dividing the test data into at least two test data blocks according to said at least two data signal lines, further comprising: receiving a test instruction message sent by the first device through the control signal line; sending a test response message to the first device through the control signal line. 10. A data link detection device, characterized in that it is applied to a first device, and the first device is connected to a second device through a target bus, wherein the target bus includes a control signal line and at least two data lines signal line, the device includes: A processing unit, configured to determine a sampling time of at least one sampling period, and sample a test data block in at least two data signal lines based on the sampling time of the at least one sampling period; The processing unit is further configured to obtain test data according to the test data blocks sampled in the at least two data signal lines for the sampling time of each sampling period, and detect whether the test data is correct; When correct, determine the sampling time of the sampling period as the first effective sampling time; The determination unit is configured to determine the signal transmission quality of the at least two data signal lines according to the determined first effective sampling time. 11. A data link detection device, characterized in that it is applied to a second device, and the first device is connected to the second device through a target bus, wherein the target bus includes a control signal line and at least two data lines signal line, the device includes: a processing unit, configured to divide the test data into at least two test data blocks according to the at least two data signal lines; The sending unit is configured to respectively send the at least two test data blocks to the first device through the at least two data signal lines; wherein different data signal lines transmit different test data blocks. 12. An electronic device, characterized by comprising a memory for storing computer program instructions and a processor for executing the program instructions, wherein when the computer program instructions are executed by the processor, the electronic device is triggered Carry out the method described in any one of claims 1-7 or the method described in any one of 8-9. 13. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute claims 1-7 The method described in any one of or the method described in any one of 8-9.

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