CN110659240A - Serial port communication method and device, storage medium and electronic equipment - Google Patents
Serial port communication method and device, storage medium and electronic equipment Download PDFInfo
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- CN110659240A CN110659240A CN201910737587.7A CN201910737587A CN110659240A CN 110659240 A CN110659240 A CN 110659240A CN 201910737587 A CN201910737587 A CN 201910737587A CN 110659240 A CN110659240 A CN 110659240A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
Abstract
The embodiment of the application discloses a serial port communication method and device, a storage medium and electronic equipment, and belongs to the field of chip testing. The serial port communication method comprises the following steps: the first equipment sends the nth message to the second equipment; the nth message carries the length X of the (N + 1) th message to be sent, wherein X is not equal to the default length N, and N is an integer greater than or equal to 1; when the first device receives the acknowledgement message responding to the nth data packet from the second device, the first device sends the n +1 messages to the second device.
Description
Technical Field
The present application relates to the field of chip testing, and in particular, to a serial communication method, apparatus, storage medium, and electronic device.
Background
In the field of chip testing, Serial Communications (Serial Communications) are generally used between an upper computer and a burner to transmit messages or data, the Serial Communications generally send bits and receive bits in a bit mode, and the Serial Communications can simultaneously send and receive data in a full-duplex mode. In the related technology, both sides of serial communication transmit data through a bit of one byte, and when a sending device sends data of one byte, a receiving device executes one-time interruption to receive the data, and the data length in the serial communication is fixed, so that the efficiency of data transmission is not high.
Disclosure of Invention
The serial port communication method, the serial port communication device, the storage medium and the electronic equipment can solve the problems of low efficiency and poor flexibility caused by the fact that the serial port communication uses data with fixed length for transmission in the related technology. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a serial port communication method, where the method includes:
the first equipment sends the nth message to the second equipment; the nth message carries the length X of the (N + 1) th message to be sent, wherein X is not equal to the default length N, and N is an integer greater than or equal to 1;
the first device sends the n +1 messages to the second device upon receiving an acknowledgement message from the second device in response to the nth packet.
In a second aspect, an embodiment of the present application provides a serial communication device, where the serial communication device includes:
the receiving and sending unit is used for sending the nth message to the second equipment; the nth message carries the length X of the (N + 1) th message to be sent, wherein X is not equal to the default length N, and N is an integer greater than or equal to 1;
the transceiving unit is further configured to, when the processing unit determines that an acknowledgement message is received from the second device in response to the nth data packet, send the n +1 messages to the second device by the first device.
In a third aspect, embodiments of the present application provide a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-mentioned method steps.
In a fourth aspect, an embodiment of the present application provides an electronic device, which may include: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
when first equipment needs to send a message with an unfixed length to second equipment, the first equipment carries the length of the next message in the current message, and informs the second equipment of receiving the next message accurately based on the length, so that the problems of poor transmission efficiency and insufficient flexibility caused by the fact that only messages with fixed lengths can be transmitted in the prior art are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a diagram of a network architecture provided by an embodiment of the present application;
fig. 2 is a schematic flowchart of a serial port communication method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a message provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an apparatus provided in an embodiment of the present application;
fig. 5 is another schematic structural diagram of an apparatus provided herein.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 shows an exemplary system architecture 100 that may be applied to the serial communication method or the serial communication apparatus of the present application.
As shown in fig. 1, the system architecture 100 may include an upper computer 101 and a burner 102. The upper computer 101 and the burner 102 communicate with each other through a communication link, and the type of the communication link may be a wireless communication link or a wired communication link, for example: the wired communication link includes an optical fiber, a twisted pair wire, or a coaxial cable, and the WIreless communication link includes a bluetooth communication link, a WIreless-FIdelity (Wi-Fi) communication link, or a microwave communication link, etc.
The burner 102 comprises a microcontroller, a memory, a chip socket, a display and a communication interface, wherein the chip socket is used for inserting a chip to be tested, and the display is used for displaying information such as the communication progress, the chip model and the test state of a serial port to be tested. The upper computer 101 sends a plurality of execution tables to the burner 102 through the communication interface, the burner 102 stores the execution tables in the memory, the execution tables correspond to different working modes respectively, and the execution tables are used for corresponding testing steps under the corresponding working modes.
The upper computer 101 can be a computer, and can also be provided with a display device, and the display of the display device can be various devices capable of realizing the display function; for example: the display device may be a Cathode ray tube (CR) display, a Light-emitting diode (LED) display, an electronic ink screen, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), or the like.
It should be noted that the serial communication method provided in the embodiment of the present application is generally executed by the upper computer 101 and the burner 102, where the first device may be the upper computer 101, and the second device may be the burner 101. Accordingly, the serial communication device is generally disposed in the upper computer or the burner 102. For example: the upper computer sends an nth message to the burner, the nth message carries the length X of an n +1 th message to be sent, the burner receives the nth message, analyzes the nth message to determine the length of the n +1 th message to be X, and prepares a corresponding resource to receive the n +1 th message according to the length X.
It should be understood that the number of upper computers and burners in fig. 1 is merely illustrative. According to the implementation requirement, the device can be provided with any number of upper computers and burners.
Please refer to fig. 2, which is a flowchart illustrating a serial port communication method according to an embodiment of the present disclosure. As shown in fig. 2, the method of the embodiment of the present application may include the steps of:
s201, the first device sends the nth message to the second device, and the second device receives the nth message from the first device.
The first device and the second device communicate in a serial manner, and the length of a message transmitted between the first device and the second device may be represented by a number of bytes or a number of bits, for example: the nth message is 2 bytes in length. The length of the nth message may be a default length N, which is a default length of messages transmitted between the first device and the second device. The first device is configured to send a message, the second device is configured to receive a message, and the first device numbers each message to be sent, for example: the first device numbers the messages to be sent starting from 1 with a step size of 1. The nth message carries the length of the (N + 1) th message to be sent, the length of the (N + 1) th message is X, X is not equal to the default length N, X can be greater than N or smaller than N, and N is an integer greater than 1.
For example: the default length is 2 bytes, the length of the nth message sent by the first device to the second device is 2 bytes, and the length of the (n + 1) th message carried in the nth message is 4 bytes.
S202, the second device receives the nth message based on the default length N.
The second device receives the nth message based on the default length N, and then executes DMA (Direct Memory Access) interruption to analyze the nth message.
S203, the verification of the nth message is successful.
Wherein, the second device checks the nth message, for example: and checking the integrity of the nth message by using a cyclic check algorithm.
In one or more embodiments, further comprising:
when the first device receives a non-acknowledgement message responding to the nth message from the second device, the first device retransmits the nth message to the second device, and when the retransmission times is greater than the preset times, transmission failure indication information is generated.
The non-acknowledgement message indicates that the second device has not successfully received the nth message, the non-acknowledgement message carries a sequence number of the nth message, and the length of the non-acknowledgement message is a default length N. The first device prestores or is preconfigured with preset times, when the retransmission times are larger than the preset times, a transmission failure indication message is generated, the nth message is stopped being retransmitted, and the (n + 1) th message is started to be transmitted.
S204, the second equipment sends a confirmation message to the first equipment.
The acknowledgment message may carry a sequence number of the nth message, where the acknowledgment message indicates that the second device successfully receives the nth message and successfully verifies the nth message.
S205, the second device analyzes the nth message to determine that the length of the (n + 1) th message is X.
And the second equipment analyzes the value of the length indicating bit in the nth message and determines the length X of the (n + 1) th message according to the value of the length indicating bit. The second device stores a correspondence between the value of the length indication bit and the relationship of the length.
| 00 | 1 |
| 01 | 2 |
| 10 | 3 |
| 11 | 4 |
TABLE 1
For example: referring to fig. 3, the length of the nth message is 1 byte, the length indication bits correspond to the 7 th bit and the 8 th bit, the values of the 7 th bit and the 8 th bit are determined to be 01, and the corresponding length X is determined to be 2 bytes.
S206, the first device sends the (n + 1) th message to the second device.
The first device sends the (n + 1) th message to the second device, wherein the length of the (n + 1) th message is X.
S207, the second device receives the nth message based on the length X.
The second device sets the receiving length to X, prepares corresponding resources according to the receiving length X, and then receives the nth message according to the prepared resources.
In one or more embodiments, the method further comprises:
and when the (N + 1) th message is successfully verified, the second device sends a confirmation message to the first device, wherein the confirmation message carries the sequence number of the (N + 1) th message, and the length of the confirmation message is the default length N.
And when the verification of the (N + 1) th message fails, the second device sends a non-confirmation message to the first device, wherein the non-confirmation message carries the sequence number of the (N + 1) th message, and the length of the non-confirmation message is the default length N.
By implementing the embodiment of the application, when the first device needs to send the message with the unfixed length to the second device, the first device carries the length of the next message in the current message, and informs the second device of the accuracy of receiving the next message based on the length, so that the problems of poor transmission efficiency and insufficient flexibility caused by the fact that only messages with fixed lengths can be transmitted in the prior art are solved.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 4, a schematic structural diagram of a serial port communication device according to an exemplary embodiment of the present application is shown. Hereinafter referred to as device 4, the device 4 may be implemented as all or part of a terminal, by software, hardware or a combination of both. The apparatus 4 comprises a transceiving unit 401 and a processing unit 402.
Example one
A transceiving unit 401, configured to send an nth message to a second device; the nth message carries the length X of the (N + 1) th message to be sent, wherein X is not equal to the default length N, and N is an integer greater than or equal to 1;
the transceiving unit 401 is further configured to, when the processing unit 402 determines that the acknowledgement message in response to the nth data packet is received from the second device, send the n +1 messages to the second device by the first device.
In one or more embodiments of the present invention,
a transceiver 401, further configured to, when receiving a non-acknowledgement message from the second device in response to the nth message, retransmit the nth message to the second device by the first device;
the processing unit 402 is further configured to generate transmission failure indication information when the retransmission times are greater than the preset times.
In one or more embodiments, the n messages include length indication bits for indicating a length X of the n +1 messages.
In one or more embodiments, the length of the nth message is a default length N, and the length of the acknowledgement message is the default length N.
Example two
A transceiving unit 401, configured to receive an nth message from a first device based on a default length N; the nth message carries the length X of the (N + 1) th message to be received, wherein X is not equal to the default length N, and N is an integer greater than or equal to 1.
The transceiver 401 is further configured to send a confirmation message to the first device when the nth message is successfully checked;
a processing unit 402, configured to parse the nth message to determine that the length of the n +1 th message is X;
the transceiver 401 is further configured to receive an n +1 th message from the first device based on the length X.
In one or more embodiments, the transceiving unit 401 is further configured to: and when the verification of the nth message fails, sending a non-acknowledgement message to the first equipment, wherein the non-acknowledgement message is used for indicating the first equipment to retransmit the nth message.
In one or more embodiments, the transceiving unit 401 is further configured to: when the (n + 1) th message is successfully checked, the second equipment sends a confirmation message to the first equipment; or
And when the verification of the (n + 1) th message fails, sending a non-confirmation message to the first equipment.
It should be noted that, when the apparatus 4 provided in the foregoing embodiment executes the serial port communication method, only the division of the functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the serial port communication method embodiments provided by the above embodiments belong to the same concept, and details of implementation processes thereof are referred to as method embodiments, which are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
When first equipment needs to send a message with an unfixed length to second equipment, the first equipment carries the length of the next message in the current message, and informs the second equipment of receiving the next message accurately based on the length, so that the problems of poor transmission efficiency and insufficient flexibility caused by the fact that only messages with fixed lengths can be transmitted in the prior art are solved.
An embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are suitable for being loaded by a processor and executing the method steps in the embodiments shown in fig. 2 to fig. 3, and a specific execution process may refer to specific descriptions of the embodiments shown in fig. 2 to fig. 3, which is not described herein again.
The present application further provides a computer program product, which stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the serial port communication method according to the above embodiments.
Fig. 5 is a schematic structural diagram of a serial communication device according to an embodiment of the present application, which is hereinafter referred to as a device 5, where the device 5 may be integrated in the first device or the second device, as shown in fig. 5, the device includes: memory 502, processor 501, input device 503, output device 504, and communication interface.
The memory 502 may be a separate physical unit, and may be connected to the processor 501, the input device 503, and the output device 8504 through a bus. The memory 502, the processor 501, the transceiver 503 may also be integrated, implemented in hardware, etc.
The memory 502 is used for storing a program for implementing the above method embodiment, or various modules of the apparatus embodiment, and the processor 501 calls the program to perform the operation of the above method embodiment.
Input devices 502 include, but are not limited to, a keyboard, a mouse, a touch panel, a camera, and a microphone; the output device includes, but is not limited to, a display screen.
Communication interfaces are used to send and receive various types of messages and include, but are not limited to, wireless interfaces or wired interfaces.
Alternatively, when part or all of the distributed task scheduling method of the above embodiments is implemented by software, the apparatus may also include only a processor. The memory for storing the program is located outside the device and the processor is connected to the memory by means of circuits/wires for reading and executing the program stored in the memory.
The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP.
The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.
Wherein the processor 501 calls the program code in the memory 502 for performing the steps in fig. 2 or fig. 3.
The embodiment of the application also provides a computer storage medium, which stores a computer program, and the computer program is used for executing the serial port communication method provided by the embodiment.
The embodiment of the present application further provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the serial port communication method provided in the foregoing embodiment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Claims (11)
1. A serial port communication method is characterized by comprising the following steps:
the first equipment sends the nth message to the second equipment; the nth message carries the length X of the (N + 1) th message to be sent, X is not equal to the default length N, N is an integer greater than or equal to 1, and N and X are greater than 0;
the first device sends the n +1 messages to the second device upon receiving an acknowledgement message from the second device in response to the nth packet.
2. The method of claim 1, further comprising:
the first device retransmitting the nth message to the second device when the first device receives a non-acknowledgement message from the second device in response to the nth message;
and when the retransmission times are more than the preset times, generating transmission failure indication information.
3. The method of claim 1 or 2, wherein the n messages comprise length indication bits for indicating a length X of the n +1 messages.
4. The method of claim 3, wherein the nth message has a default length N, and wherein the acknowledgment message has a default length N.
5. A serial port communication method is characterized by comprising the following steps:
the second device receiving an nth message from the first device based on the default length N; the nth message carries the length X of the (N + 1) th message to be received, X is not equal to the default length N, N is an integer greater than or equal to 1, and X and N are greater than 0;
when the verification of the nth message is successful, the second device sends a confirmation message to the first device;
the second equipment analyzes the nth message to determine that the length of the (n + 1) th message is X;
the second device receives an n +1 th message from the first device based on length X.
6. The method of claim 5, further comprising:
and when the verification of the nth message fails, the second device sends a non-acknowledgement message to the first device, wherein the non-acknowledgement message is used for indicating the first device to retransmit the nth message.
7. The method of claim 5 or 6, further comprising:
when the (n + 1) th message is successfully checked, the second equipment sends a confirmation message to the first equipment; or
And when the verification of the (n + 1) th message fails, the second equipment sends a non-confirmation message to the first equipment.
8. A serial communication device, the device comprising: a transceiving unit and a processing unit, wherein,
the receiving and sending unit is used for sending the nth message to the second equipment; the nth message carries the length X of the (N + 1) th message to be sent, X is not equal to the default length N, N is an integer greater than or equal to 1, and X and N are greater than 0;
the transceiving unit is further configured to, when the processing unit determines that an acknowledgement message is received from the second device in response to the nth data packet, send the n +1 messages to the second device by the first device.
9. A serial communication device, the device comprising:
a transceiving unit for receiving an nth message from the first device based on a default length N; the nth message carries the length X of the (N + 1) th message to be received, X is not equal to the default length N, N is an integer greater than or equal to 1, and X and N are greater than 0;
the transceiving unit is further configured to send a confirmation message to the first device when the nth message is successfully verified;
the processing unit is used for analyzing the nth message to determine that the length of the (n + 1) th message is X;
the transceiver unit is further configured to receive an n +1 th message from the first device based on the length X.
10. A computer storage medium, characterized in that it stores a plurality of instructions adapted to be loaded by a processor and to carry out the method steps according to any one of claims 1 to 7.
11. An electronic device, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113326224A (en) * | 2021-06-24 | 2021-08-31 | 卡斯柯信号有限公司 | Serial port communication method based on 2-out-of-2 architecture |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072374A (en) * | 1989-11-07 | 1991-12-10 | Ge Fanuc Automation North America, Inc. | Method for communicating among a plurality of programmable logic controllers each having a dma controller |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072374A (en) * | 1989-11-07 | 1991-12-10 | Ge Fanuc Automation North America, Inc. | Method for communicating among a plurality of programmable logic controllers each having a dma controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113326224A (en) * | 2021-06-24 | 2021-08-31 | 卡斯柯信号有限公司 | Serial port communication method based on 2-out-of-2 architecture |
| CN113326224B (en) * | 2021-06-24 | 2022-08-02 | 卡斯柯信号有限公司 | Serial port communication method based on 2-out-of-2 architecture |
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