CN116131402B - Method and device for identifying UFCS protocol waveform based on I/O port - Google Patents

Abstract

The invention discloses a method and device for identifying UFCS protocol waveforms based on IO ports. The method includes: monitoring the signal inversion of the target port in real time; wherein, when the signal of the target port inverts, the recording timer clock value; generate a signal flip sequence based on each clock value and perform a forward difference operation on each clock value in the signal flip sequence, and generate a time length based on each difference operation result Sequence: Match each difference operation result with the baud rate set of the UFCS protocol waveform one by one, mark the successfully matched difference operation results according to preset rules, and generate a signal sequence about the UFCS protocol waveform. The present invention can be used to realize soft decoding of UFCS protocol waveforms.

Description

A method and device for identifying UFCS protocol waveform based on I/O port

Technical field

The present invention relates to the field of fast charging technology, and in particular to a method and device for identifying UFCS protocol waveforms based on an IO port.

Background technique

In recent years, terminal fast charging technology has developed rapidly, especially in terms of charging speed, charging safety, and intelligent charging management. The fast charging experience has been widely recognized by users and has become a standard feature of smart terminals such as mobile phones. However, the fast charging industry has long had the problem of protocol incompatibility: terminals and adapters of different brands cannot be effectively identified, and only lower power charging can be achieved. On the one hand, users’ fast charging experience is greatly restricted and restricted, and incompatibility issues have become a major pain point for users.

UFCS is a new generation of integrated fast technology led by the Academy of Information and Communications Technology, Huawei, OPPO, vivo, Xiaomi, and joint efforts by many terminal and chip companies and industry partners such as Silicon Power, Rockchip, Lihui Technology, and Angbao Electronics. charge agreement. The agreement aims to formulate integrated fast charging standards for mobile terminals, solve the problem of incompatibility of mutual fast charging, and create a fast, safe and compatible charging environment for end users. However, the current implementation of UFCS integrated fast charging protocols is mostly a hard decoding method that integrates the decoding method in the MCU chip and uses the protocol identification circuit to sample and identify the signal changes of each pin in the charging interface, which has low flexibility.

Contents of the invention

This application provides a method and device for identifying UFCS protocol waveforms based on I/O ports, which are used to implement soft decoding of UFCS protocol waveforms.

In the first aspect, this application provides a method for identifying UFCS protocol waveforms based on I/O ports, including:

Monitor the signal inversion of the target port in real time; wherein, when the signal of the target port inverts, the clock value of the timer is recorded;

Generate a signal flip sequence based on each clock value and perform a forward difference operation on each clock value in the signal flip sequence, and generate a time length sequence based on the result of each difference operation;

Match each of the difference operation results with the baud rate set of the UFCS protocol waveform one by one, mark the successfully matched difference operation results according to the preset rules, and generate a signal sequence related to the UFCS protocol waveform.

This application provides a device that identifies UFCS protocol waveforms based on I/O ports, monitors the signal flip situation of the target port through a timer, and generates a time length sequence about the target port flip situation based on each recorded clock value. Match each difference operation result in the time length sequence with the baud rate set of the UFCS protocol waveform to obtain the signal correlation between the target port signal inversion and the UFCS protocol waveform. By identifying the successfully matched difference operation results based on preset rules, a signal sequence about the UFCS protocol waveform can be generated to realize soft decoding of the UFXS protocol waveform. There is no need to integrate a chip in the MCU or deploy a waveform recognition circuit. It can reduce the cost of UFCS protocol identification and is easy to operate.

In one implementation, the real-time monitoring of the signal flip situation of the target port specifically includes:

Capture the signal of the target port based on the first timer, and when a flip of the signal is detected, record the clock value of the first timer;

Timeout identification is performed on the signal of the target port based on the second timer, and when the time interval from the detection of the last signal flip exceeds the longest pulse width of the signal of the UFCS protocol, the capture of the signal is terminated.

In one implementation, the signal inversion sequence is generated based on each clock value, a forward difference operation is performed on each clock value in the signal inversion sequence, and the result of each difference operation is Generate a time length sequence, including:

According to the signal flip sequence of the target port, record in sequence and generate a signal flip sequence based on the clock value of the timer;

Subtract the previous clock value from the latter clock value of each two adjacent clock values in the signal flip sequence to generate several difference operation results;

A time length sequence is generated according to each difference operation result; wherein each difference operation result represents the pulse width of a signal flip.

In one implementation, each of the difference operation results is matched with the baud rate set of the UFCS protocol waveform one by one, and the successfully matched difference operation results are transformed into information according to preset rules to generate Regarding the signal sequence of the UFCS protocol waveform, it specifically includes:

Match each difference operation result with the baud rate set of the UFCS protocol waveform;

Calculate the time length required for transmitting a unit bit by the difference operation result based on the baud rate matched by the difference operation result;

When the difference operation result is equal to the corresponding time length result, the difference operation result is marked as a 0 signal;

When the difference operation result is half of the corresponding time length result, the difference operation result is identified as a half-1 signal; wherein, when two adjacent half-1 signals are present, the two half-1 signals are identified as A half-1 signal is identified as a 1 signal;

A 0-1 signal sequence regarding the UFCS protocol waveform is generated based on the 0 signal and the 1 signal.

In the second aspect, this application provides a device for identifying UFCS protocol waveforms based on I/O ports, including a port signal monitoring module, a first sequence generation module and a second sequence generation module, specifically:

The port signal monitoring module is used to monitor the signal inversion of the target port in real time; wherein, when the signal of the target port inverts, the clock value of the timer is recorded;

The first sequence generation module is configured to generate a signal inversion sequence based on each of the clock values and perform a forward difference operation on each of the clock values in the signal inversion sequence, and based on each difference operation result Generate time length series;

The second sequence generation module is used to match each of the difference operation results with the baud rate set of the UFCS protocol waveform one by one, identify the successfully matched difference operation results according to the preset rules, and generate the relevant Signal sequence of UFCS protocol waveforms.

This application provides a device that identifies UFCS protocol waveforms based on I/O ports, monitors the signal flip situation of the target port through a timer, and generates a time length sequence about the target port flip situation based on each recorded clock value. Match each difference operation result in the time length sequence with the baud rate set of the UFCS protocol waveform to obtain the signal correlation between the target port signal inversion and the UFCS protocol waveform. By identifying the successfully matched difference operation results based on preset rules, a signal sequence about the UFCS protocol waveform can be generated to realize soft decoding of the UFXS protocol waveform. There is no need to integrate a chip in the MCU or deploy a waveform identification circuit. It can reduce the cost of UFCS protocol identification and is easy to operate.

In one implementation, the port signal monitoring module is used to monitor the signal flip situation of the target port in real time, specifically including:

Capture the signal of the target port based on the first timer, and when a flip of the signal is detected, record the clock value of the first timer;

Timeout identification is performed on the signal of the target port based on the second timer, and when the time interval from the detection of the last signal flip exceeds the longest pulse width of the signal of the UFCS protocol, the capture of the signal is terminated.

In one implementation, the first sequence generation module is configured to generate a signal inversion sequence based on each of the clock values and perform a forward difference operation on each of the clock values in the signal inversion sequence, and A time length sequence is generated based on the result of each difference operation, including:

According to the signal flip sequence of the target port, record in sequence and generate a signal flip sequence based on the clock value of the timer;

Subtract the previous clock value from the latter clock value of each two adjacent clock values in the signal flip sequence to generate several difference operation results;

A time length sequence is generated according to each difference operation result; wherein each difference operation result represents the pulse width of a signal flip.

In one implementation, the second sequence generation module is used to match each of the difference operation results with the baud rate set of the UFCS protocol waveform one by one, and match the successfully matched difference values according to preset rules. The operation results are marked and a signal sequence related to the UFCS protocol waveform is generated, including:

Match each difference operation result with the baud rate set of the UFCS protocol waveform;

Calculate the time length required for transmitting a unit bit by the difference operation result based on the baud rate matched by the difference operation result;

When the difference operation result is equal to the corresponding time length result, the difference operation result is marked as a 0 signal;

When the difference operation result is half of the corresponding time length result, the difference operation result is identified as a half-1 signal; wherein, when two adjacent half-1 signals are present, the two half-1 signals are identified as A half-1 signal is identified as a 1 signal;

A 0-1 signal sequence regarding the UFCS protocol waveform is generated based on the 0 signal and the 1 signal.

In a third aspect, the present application also provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, the A method of identifying UFCS protocol waveforms based on I/O ports as described above.

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to perform the above. The described method is to identify UFCS protocol waveform based on I/O port.

Description of drawings

Figure 1 is a schematic flow chart of a method for identifying UFCS protocol waveforms based on I/O ports provided by an embodiment of the present invention;

Figure 2 is a module structure diagram of a device for identifying UFCS protocol waveforms based on I/O ports provided by an embodiment of the present invention.

Detailed ways

Specific implementations of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the invention but are not intended to limit the scope of the invention.

The terms “first”, “second”, etc. in the description, claims, and drawings of this application are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

Example 1

Referring to Figure 1, Figure 1 is a schematic flow chart of a method for identifying UFCS protocol waveforms based on I/O ports according to an embodiment of the present invention. The embodiment of the present invention provides a method for identifying UFCS protocol waveforms based on I/O ports, including steps 101 to 103. Each step is specifically as follows:

Step 101: Monitor the signal inversion of the target port in real time; when the signal of the target port inverts, record the clock value of the timer;

Step 102: Generate a signal inversion sequence based on each clock value, perform a forward difference operation on each clock value in the signal inversion sequence, and generate a time length sequence based on the result of each difference operation;

Step 103: Match each difference operation result with the baud rate set of the UFCS protocol waveform one by one, mark the successfully matched difference operation results according to the preset rules, and generate a signal sequence about the UFCS protocol waveform. .

In the embodiment of the present invention, the target port refers to the port used by the MCU to decode the UFCS protocol. According to the protocol time operation, UFCS protocol signals will be sent and received on the target port D+/D-. The target port will send and receive in time according to the type of device it serves. When acting as a charging device, D- is the sending end and D+ is the receiving end; When acting as a power supply device, D- is the receiving end and D+ is the transmitting end. When the target port needs to receive, set the port to an analog input and set it to a timer capture. It should be noted that D+/D- is only a numbering method for the target port. It can also be described as DP/DM, which is not limited here.

In one embodiment, the real-time monitoring of the signal inversion of the target port specifically includes: capturing the signal of the target port based on a first timer, and recording the first timer when an inversion of the signal is detected. A clock value of a certain timer; timeout identification is performed on the signal of the target port based on the second timer. When the time interval from the detection of the last signal flip exceeds the longest pulse width of the signal of the UFCS protocol, the signal is terminated. of capture. In the embodiment of the present invention, the signal of the target port is captured through the MCU timer, and the capture type can be customized to rising edge capture, falling edge capture, or dual edge capture. A timer is used to record the signal inversion of the target port. When the port level of the target port is inverted, an interrupt is generated. After entering the interrupt function, the clock value of the timer at this time is recorded. If the timer MCU is 16bit, the timer clock value range is [0, 65535]. When the timer reaches a clock value of 327, the I/O port level flip occurs. At this time, the value 327 is recorded after entering the interrupt. After the interrupt occurs, the clock value of the timer continues to increase. When the timer value is 1088, the I/O port level flip occurs again, and the value 1088 is recorded again. By analogy, record the value of the timer each time a level flip occurs. In the embodiment of the present invention, while starting signal capture through the first timer, timeout identification is also performed through the second timer. Whenever a level flip occurs in the first timer, the second timer is cleared immediately. When it is detected that the last level flip has exceeded the longest pulse width of the signal in the UFCS protocol and there is still no flip, it is determined that the current signal reception has ended, and decoding of the received clock values of each timer begins.

In one embodiment, the signal inversion sequence is generated based on each clock value, a forward difference operation is performed on each clock value in the signal inversion sequence, and a time is generated based on each difference operation result. The length sequence specifically includes: sequentially recording and generating a signal inversion sequence based on the clock value of the timer according to the signal inversion sequence of the target port; converting the last two adjacent clock values in the signal inversion sequence into One clock value is subtracted from the previous clock value to generate several difference operation results; a time length sequence is generated according to each difference operation result; wherein each difference operation result represents the pulse width of a signal flip. According to the signal flip sequence of the target port, the clock value of the timer is recorded in sequence. When the signal reception is completed, the signal flip sequence of the current received signal is generated. Subtract the clock value from the last two adjacent clock values in the sequence. The difference between the two clock values represents the pulse width of a signal flip. By performing a forward difference operation on each clock value in the generated signal flip sequence, a time length sequence of signal flips can be generated.

In one embodiment, each of the difference operation results is matched with the baud rate set of the UFCS protocol waveform one by one, and the successfully matched difference operation results are transformed into information according to preset rules to generate information about UFCS The signal sequence of the protocol waveform specifically includes: matching each difference operation result with the baud rate set of the UFCS protocol waveform; calculating and transmitting the difference operation result based on the baud rate matched by the difference operation result. The time length result required for unit bit; when the difference operation result is equal to the corresponding time length result, the difference operation result is marked as a 0 signal; when the difference operation result is the corresponding time length result When half of , the difference operation result is identified as a half 1 signal; wherein, when there are two adjacent half 1 signals, the two half 1 signals are identified as 1 signals; based on the 0 signal and the 1 signal to generate a 0-1 signal sequence regarding the UFCS protocol waveform. In the embodiment of the present invention, each generated difference operation result is matched with the baud rate set of the UFCS protocol waveform. The UFCS protocol waveform is Training sequence (0xAA) + data frame (UFCS protocol has four baud rates). If the match is successful, the time required to transmit 1 bit of the difference operation result is calculated based on the matching result. Preferably, if the matching baud rate of the difference operation result is 115200, then each bit time is 1000000us/115200=8.6us. As an optimization solution of the embodiment of the present invention, it can be determined whether the minimum pulse width length in the time length sequence is 8.6us and whether the baud rate of the remaining difference operation results is 115200. When the pulse width length of the difference operation result is the transmission time length of 1 bit, the difference operation result, that is, the pulse width is marked as a 0 signal. When the pulse width length of the difference operation result is half of the 1 bit transmission time length, , the difference operation result is marked as a half-1 signal. If there are two adjacent half-1 signals, the two half-1 signals are identified as one 1 signal. After the identification of each difference operation result in the time length sequence is completed, a 0-1 signal sequence related to the UFCS protocol waveform can be generated.

In an embodiment of the present invention, a device for identifying the UFCS protocol based on I/O ports is also provided, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program Implement the above method of identifying UFCS protocol waveforms based on I/O ports.

In an embodiment of the present invention, a computer-readable storage medium is also provided. The computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the above I/O-based The port identifies the UFCS protocol.

Exemplarily, the computer program can be divided into one or more modules, and the one or more modules are stored in the memory and executed by the processor to complete the present invention. The one or more modules may be a series of computer program instruction segments capable of completing specific functions. The instruction segments are used to describe the execution process of the computer program in the device that identifies the UFCS protocol based on the I/O port.

The device that recognizes the UFCS protocol based on I/O ports can be computing devices such as desktop computers, notebooks, handheld computers, and cloud servers. The device that recognizes the UFCS protocol based on the I/O port may include, but is not limited to, a processor, a memory, and a display. Those skilled in the art can understand that the above-mentioned components are only examples of devices that identify the UFCS protocol based on I/O ports, and do not constitute a limitation on devices that collect data based on scanning devices. They may include more or less than the above-mentioned components. components, or a combination of certain components, or different components. For example, the device that recognizes the UFCS protocol based on the I/O port may also include input and output devices, network access devices, buses, etc.

The so-called processor can be a central processing unit (Central Processing Unit, CPU), or other general-purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable Gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can be any conventional processor, etc. The processor is the control center of the device that recognizes the UFCS protocol based on the I/O port and is connected using various interfaces and lines. The various parts of the device are identified throughout the I/O port-based I/O port identification UFCS protocol.

The memory may be used to store the computer program and/or module, and the processor implements the method based on running or executing the computer program and/or module stored in the memory and calling data stored in the memory. Scan device data to collect various features of the device. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playback function, a text conversion function, etc.), etc.; the storage data area may store Data created based on the use of mobile phones (such as audio data, text message data, etc.), etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card , Flash Card, at least one disk storage device, flash memory device, or other volatile solid-state storage device.

Wherein, if the device integration module that recognizes the UFCS protocol based on the I/O port is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer can When the program is executed by the processor, the steps of each of the above method embodiments can be implemented. Wherein, the computer program includes computer program code, which may be in the form of source code, object code, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording media, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electrical carrier signals, telecommunications signals, and software distribution media, etc. It should be noted that the content contained in the computer-readable medium can be appropriately added or deleted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium Excludes electrical carrier signals and telecommunications signals. Persons of ordinary skill in the art can understand and implement the method without any creative effort.

Embodiments of the present invention provide a method for identifying UFCS protocol waveforms based on I/O ports. The signal flip situation of the target port is monitored through a timer, and a time length sequence about the target port flip situation is generated based on each recorded clock value. Match each difference operation result in the time length sequence with the baud rate set of the UFCS protocol waveform to obtain the signal correlation between the target port signal inversion and the UFCS protocol waveform. By identifying the successfully matched difference operation results based on preset rules, a signal sequence about the UFCS protocol waveform can be generated to realize soft decoding of the UFXS protocol waveform. There is no need to integrate a chip in the MCU or deploy a waveform recognition circuit. It can reduce the cost of UFCS protocol identification and is easy to operate.

Example 2

Referring to Figure 2, Figure 2 is a module structure diagram of a device for identifying UFCS protocol waveforms based on I/O ports provided by an embodiment of the present invention. The embodiment of the present invention provides a device for identifying UFCS protocol waveforms based on I/O ports, including a port signal monitoring module 201, a first sequence generation module 202 and a second sequence generation module 203, specifically:

The port signal monitoring module 201 is used to monitor the signal inversion of the target port in real time; wherein, when the signal of the target port inverts, the clock value of the timer is recorded;

The first sequence generation module 202 is configured to generate a signal inversion sequence based on each clock value and perform a forward difference operation on each clock value in the signal inversion sequence, and perform a forward difference operation based on each difference operation. The result is a time length sequence;

The second sequence generation module 203 is used to match each of the difference operation results with the baud rate set of the UFCS protocol waveform one by one, mark the successfully matched difference operation results according to the preset rules, and generate Signal sequence regarding UFCS protocol waveforms.

In one embodiment, the port signal monitoring module is used to monitor the signal inversion of the target port in real time, which specifically includes: capturing the signal of the target port based on a first timer. When the signal inversion is detected, When, record the clock value of the first timer; perform timeout identification on the signal of the target port based on the second timer, when the time interval from the last signal flip exceeds the longest pulse width of the signal of the UFCS protocol , ending the capture of the signal.

In one embodiment, the first sequence generation module is configured to generate a signal inversion sequence based on each clock value and perform a forward difference operation on each clock value in the signal inversion sequence, and perform a forward difference operation based on each clock value. A difference operation result generates a time length sequence, which specifically includes: sequentially recording and generating a signal inversion sequence based on the clock value of the timer according to the signal inversion sequence of the target port; converting each adjacent signal in the signal inversion sequence Subtract the previous clock value from the latter clock value of the two clock values to generate several difference operation results; generate a time length sequence according to each difference operation result; wherein each difference operation result represents one time The pulse width of the signal flip.

In one embodiment, the second sequence generation module is used to match each of the difference operation results with the baud rate set of the UFCS protocol waveform one by one, and match the successfully matched difference operation results according to preset rules. identification, generating a signal sequence about the UFCS protocol waveform, specifically including: matching each difference operation result with the baud rate set of the UFCS protocol waveform; calculating the baud rate based on the difference operation result matching The difference operation result is the time length required to transmit the unit bit; when the difference operation result is equal to the corresponding time length result, the difference operation result is marked as a 0 signal; when the difference operation result When it is half of the corresponding time length result, the difference operation result is identified as a half-1 signal; wherein, when there are two adjacent half-1 signals, the two half-1 signals are identified as a 1 signal. ; Generate a 0-1 signal sequence regarding the UFCS protocol waveform based on the 0 signal and the 1 signal.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the device described above can be referred to the corresponding process in the foregoing method embodiment, and will not be described again here.

Embodiments of the present invention provide a device that identifies UFCS protocol waveforms based on I/O ports, monitors the signal flip situation of the target port through a timer, and generates a time length sequence about the target port flip situation based on each recorded clock value. Match each difference operation result in the time length sequence with the baud rate set of the UFCS protocol waveform to obtain the signal correlation between the target port signal inversion and the UFCS protocol waveform. By identifying the successfully matched difference operation results based on preset rules, a signal sequence about the UFCS protocol waveform can be generated to realize soft decoding of the UFXS protocol waveform. There is no need to integrate a chip in the MCU or deploy a waveform recognition circuit. It can reduce the cost of UFCS protocol identification and is easy to operate.

The above are only preferred embodiments of the present invention. It should be noted that those of ordinary skill in the art can also make several improvements and substitutions without departing from the technical principles of the present invention. These improvements and substitutions It should also be regarded as the protection scope of the present invention.

Claims (8)

1. A method for identifying UFCS protocol waveforms based on an I/O port, comprising:

monitoring the signal turnover condition of the target port in real time; when the signal of the target port is overturned, recording a clock value of a timer;

generating a signal turnover sequence based on each clock value, performing forward difference operation on each clock value in the signal turnover sequence, and generating a time length sequence according to each difference operation result;

matching each difference value operation result with the baud rate set of the UFCS protocol waveform one by one, and marking the successfully matched difference value operation result according to a preset rule to generate a signal sequence related to the UFCS protocol waveform; wherein, each difference value operation result is matched with the baud rate set of the UFCS protocol waveform; calculating a time length result required by the difference operation result to transmit a unit bit based on the baud rate matched with the difference operation result; when the difference value operation result is equal to the corresponding time length result, marking the difference value operation result as a 0 signal; when the difference value operation result is half of the corresponding time length result, the difference value operation result is marked as a half 1 signal; wherein when two adjacent half 1 signals, the two half 1 signals are identified as 1 signals; a 0-1 signal sequence is generated for a UFCS protocol waveform based on the 0 signal and the 1 signal.

2. The method for identifying UFCS protocol waveforms based on I/O ports as claimed in claim 1, wherein said monitoring signal flip condition of the target port in real time specifically comprises:

capturing a signal of the target port based on a first timer, and recording a clock value of the first timer when the signal is detected to overturn;

and carrying out overtime identification on the signal of the target port based on a second timer, and ending capturing the signal when the time interval from the last signal overturn is detected to exceed the longest pulse width of the signal of the UFCS protocol.

3. The method for identifying UFCS protocol waveforms based on an I/O port of claim 1, wherein said generating a signal flip sequence based on each of said clock values and performing a forward difference operation on each of said clock values in said signal flip sequence, and generating a time length sequence based on each difference operation result, specifically comprises:

sequentially recording and generating a signal overturning sequence based on the clock value of the timer according to the signal overturning sequence of the target port;

subtracting the previous clock value from the next clock value in every two adjacent clock values in the signal overturning sequence to generate a plurality of difference value operation results;

generating a time length sequence according to each difference value operation result; each difference operation result represents the pulse width of one signal inversion.

4. The device for identifying the UFCS protocol waveform based on the I/O port is characterized by comprising a port signal monitoring module, a first sequence generating module and a second sequence generating module, and specifically comprises the following steps:

the port signal monitoring module is used for monitoring the signal turnover condition of the target port in real time; when the signal of the target port is overturned, recording a clock value of a timer;

the first sequence generating module is used for generating a signal overturning sequence based on each clock value, carrying out forward difference value operation on each clock value in the signal overturning sequence, and generating a time length sequence according to each difference value operation result;

the second sequence generating module is used for matching each difference value operation result with the baud rate set of the UFCS protocol waveform one by one, marking the successfully matched difference value operation result according to a preset rule, and generating a signal sequence related to the UFCS protocol waveform; wherein, each difference value operation result is matched with the baud rate set of the UFCS protocol waveform; calculating a time length result required by the difference operation result to transmit a unit bit based on the baud rate matched with the difference operation result; when the difference value operation result is equal to the corresponding time length result, marking the difference value operation result as a 0 signal; when the difference value operation result is half of the corresponding time length result, the difference value operation result is marked as a half 1 signal; wherein when two adjacent half 1 signals, the two half 1 signals are identified as 1 signals; a 0-1 signal sequence is generated for a UFCS protocol waveform based on the 0 signal and the 1 signal.

5. The device for identifying UFCS protocol waveforms based on an I/O port as claimed in claim 4, wherein said port signal monitoring module is configured to monitor signal flip conditions of a target port in real time, and specifically comprises:

capturing a signal of the target port based on a first timer, and recording a clock value of the first timer when the signal is detected to overturn;

and carrying out overtime identification on the signal of the target port based on a second timer, and ending capturing the signal when the time interval from the last signal overturn is detected to exceed the longest pulse width of the signal of the UFCS protocol.

6. The apparatus for identifying UFCS protocol waveforms based on an I/O port of claim 4, wherein said first sequence generating module is configured to generate a signal flip sequence based on each of said clock values and perform a forward difference operation on each of said clock values in said signal flip sequence, and generate a time length sequence based on each of the difference operation results, and specifically comprises:

sequentially recording and generating a signal overturning sequence based on the clock value of the timer according to the signal overturning sequence of the target port;

subtracting the previous clock value from the next clock value in every two adjacent clock values in the signal overturning sequence to generate a plurality of difference value operation results;

generating a time length sequence according to each difference value operation result; each difference operation result represents the pulse width of one signal inversion.

7. A terminal device comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the method of identifying UFCS protocol waveforms based on I/O ports as claimed in any of claims 1 to 3 when the computer program is executed by the processor.

8. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program, when run, controls a device in which the computer readable storage medium is located to perform the method of identifying UFCS protocol waveforms based on an I/O port as claimed in any of claims 1 to 3.