CN111813076A

CN111813076A - Vehicle ECU (electronic control Unit) flashing method and device, vehicle ECU and storage medium

Info

Publication number: CN111813076A
Application number: CN202010580399.0A
Authority: CN
Inventors: 刘均; 庄文龙
Original assignee: Shenzhen Launch Technology Co Ltd
Current assignee: Shenzhen Launch Technology Co Ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-10-23
Anticipated expiration: 2040-06-23
Also published as: CN111813076B

Abstract

The application provides a vehicle ECU (electronic control unit) flashing method and device, a vehicle ECU and a storage medium, relates to the technical field of vehicles, and can effectively reduce the time for flashing ECU data and improve the ECU data flashing efficiency. The method comprises the following steps: acquiring data to be flashed; decomposing the data to be flashed into a preset number of data blocks to be flashed according to the communication protocol type of the vehicle ECU; compressing each data block to be flashed respectively to obtain a compressed data block; respectively generating a first instruction for flashing each compressed data block according to the communication protocol type of the vehicle ECU; and sending the first instruction to the vehicle ECU, wherein the first instruction is used for instructing the vehicle ECU to decompress each compressed data block, and writing the data obtained after decompression into a preset storage address of the vehicle ECU respectively.

Description

Vehicle ECU (electronic control Unit) flashing method and device, vehicle ECU and storage medium

Technical Field

The application relates to the technical field of vehicles, in particular to a vehicle ECU flashing method and device, a vehicle ECU and a storage medium.

Background

With the development of vehicle technology, Electronic Control Units (ECUs) are widely used in vehicles. For example, the ECU plays a decisive role in improving the dynamic performance and safety of the vehicle, but along with the increasing functionality of the ECU, the process of data flashing on the ECU is also more complicated in the vehicle diagnosis process.

At present, the data flashing method commonly adopted is to read original flashing data, decompose the original flashing data into data frames according to the format of an automobile communication protocol, and send the data frames to an ECU for flashing. The brushing mode has the problem of low brushing efficiency under the condition that more and more brushing data are brushed.

Disclosure of Invention

The embodiment of the application provides a vehicle ECU flashing method and device, a vehicle ECU and a storage medium, and the ECU data flashing time can be effectively reduced, and the ECU data flashing efficiency is improved.

In a first aspect, the present application provides a method for flashing an ECU of a vehicle electronic control unit, applied to an electronic device, the method including:

acquiring data to be flashed;

decomposing the data to be flashed into a preset number of data blocks to be flashed according to the communication protocol type of the vehicle ECU;

compressing each data block to be flashed respectively to obtain a compressed data block;

respectively generating a first instruction for flashing each compressed data block according to the communication protocol type of the vehicle ECU;

and sending the first instruction to the vehicle ECU, wherein the first instruction is used for instructing the vehicle ECU to decompress each compressed data block, and writing the data obtained after decompression into a preset storage address of the vehicle ECU respectively.

In an optional implementation manner, before sending the first instruction to the vehicle ECU, the method further includes:

and sending a second instruction carrying the preset storage address and the number of bytes written over to the vehicle ECU, wherein the second instruction is used for indicating the vehicle ECU to reserve a target storage space required for storing the number of bytes written over in a storage space corresponding to the preset storage address.

In an optional implementation manner, before the acquiring the data to be flashed, the method further includes:

establishing communication connection with the vehicle ECU, and sending a third instruction to the vehicle ECU, wherein the third instruction is used for instructing the vehicle ECU to switch from a diagnosis mode to a flash mode;

and sending a fourth instruction carrying verification request information to the vehicle ECU, wherein the fourth instruction is used for instructing the vehicle ECU to perform flash safety verification on the electronic equipment based on the verification request information.

In an optional implementation manner, after sending the first instruction to the vehicle ECU, the method further includes:

and if a brushing success command returned by the vehicle ECU is received, sending a fifth command to the vehicle ECU, wherein the fifth command is used for indicating the vehicle ECU to finish the brushing operation.

In a second aspect, the present application provides a data flashing method for an electronic control unit ECU of a vehicle, which is applied to the ECU of the vehicle, and the method includes:

receiving a first instruction sent by electronic equipment, wherein the first instruction is an instruction for flashing each compressed data block, the first instruction is generated by the electronic equipment according to the communication protocol type of a vehicle ECU (electronic control Unit), decomposing data to be flashed into a preset number of data blocks to be flashed, compressing each data block to be flashed respectively, and generating the compressed data blocks according to the communication protocol type of the vehicle ECU;

decompressing each compressed data block according to the first instruction;

and writing the decompressed data into preset storage addresses of the vehicle ECU respectively.

In an optional implementation manner, before the responding to the first instruction sent by the electronic device, the method further includes:

receiving a second instruction sent by the electronic equipment, wherein the second instruction carries the preset storage address and the number of bytes to be written;

and reserving a target storage space required for storing the number of the flash bytes in a storage space corresponding to the preset storage address according to the second instruction.

In a third aspect, the present application provides a vehicle electronic control unit ECU flashing method, which is applied to a vehicle ECU data flashing system, where the vehicle ECU data flashing system includes an electronic device and a vehicle ECU, and the electronic device is communicatively connected to the vehicle ECU, and the method includes:

the electronic equipment acquires data to be flashed, decomposes the data to be flashed into a preset number of data blocks to be flashed according to the communication protocol type of a vehicle ECU (electronic control unit), compresses each data block to be flashed respectively to obtain compressed data blocks, generates first instructions for flashing each compressed data block according to the communication protocol type of the vehicle ECU, and sends the first instructions to the vehicle ECU;

and the vehicle ECU decompresses each compressed data block according to the first instruction, and writes data obtained after decompression into a preset storage address of the vehicle ECU respectively.

In a fourth aspect, the present application provides an electronic device comprising: a memory for storing a vehicle ECU flash program; a processor configured to implement the method of the first aspect or any alternative of the first aspect when executing the vehicle ECU flash program.

In a fifth aspect, the present application provides a vehicle ECU including: a memory for storing a vehicle ECU flash program; a processor configured to implement the method of the second aspect or any alternative of the second aspect as described above when executing the vehicle ECU flash program.

In a sixth aspect, the present application provides a computer readable storage medium storing a computer program which, when executed by a processor, implements the method of the first or second aspect.

In a seventh aspect, the present embodiments provide a computer program product, which, when running on an electronic device, causes the electronic device to execute the steps of the vehicle ECU flashing method according to the first aspect, or when running on a vehicle ECU, causes the vehicle ECU to execute the steps of the vehicle ECU flashing method according to the second aspect.

By means of the vehicle ECU flashing method, data to be flashed are decomposed into the data blocks to be flashed in the preset number, the data blocks to be flashed are compressed respectively, after the compressed data blocks are obtained, first instructions for flashing the compressed data blocks are generated respectively, the vehicle ECU decompresses the compressed data blocks and writes data obtained after decompression into the preset storage address of the vehicle ECU respectively, compared with the situation that all data to be flashed are written into the preset storage address of the vehicle ECU simultaneously, the time for flashing the ECU data can be effectively shortened, and the data flashing efficiency of the ECU is improved.

It is to be understood that, the beneficial effects of the second to seventh aspects may be referred to the relevant description of the first aspect, and are not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and those skilled in the art can also obtain other drawings according to the drawings without inventive labor.

FIG. 1 is a schematic flow chart diagram of a vehicle ECU flashing method provided by an embodiment of the present application;

FIG. 2 is a schematic flow chart diagram of a vehicle ECU flashing method provided by another embodiment of the present application;

FIG. 3 is a schematic diagram of an application scenario of a vehicle ECU flashing method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a vehicle electronics device provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a vehicle ECU provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of an electronic device provided by an embodiment of the application;

fig. 7 is a schematic diagram of a vehicle ECU provided in an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It should be understood that the terms "first," "second," "third," and the like in the description of the present application and in the appended claims, are used for distinguishing between descriptions that are not intended to indicate or imply relative importance.

It should also be appreciated that reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.

Before describing the vehicle ECU flashing method provided by the present application, first, the flashing principle adopted by the present application and related concepts in the vehicle ECU flashing process are exemplarily described.

The vehicle ECU flash refers to writing vehicle ECU DATA into a vehicle ECU storage unit, wherein the vehicle ECU DATA is generated by a developer on development equipment, such as a PC, a server or a personal digital computer, through a preset programming tool, and can be program (CODE) or DATA (DATA) of the vehicle ECU in advance, the developer usually stores the vehicle ECU DATA in a flash file, then the flash equipment performs flash on the vehicle ECU DATA in the flash file, that is, the flash equipment reads the vehicle ECU DATA in the flash file, then according to an automobile communication protocol format, the vehicle ECU DATA is decomposed into frame DATA and is filled in a flash command, the frame DATA is sent to the vehicle ECU through the flash command, and the flash command instructs the vehicle ECU to analyze and store the DATA frame in the flash command at a preset position, and finishing the flashing of the ECU data of the vehicle.

The following describes an exemplary vehicle ECU flashing method provided by the present application, with reference to specific embodiments.

Referring to fig. 1, fig. 1 is a schematic flow chart of a vehicle ECU flashing method according to an embodiment of the present application. In this embodiment, the main execution body of the vehicle ECU flashing method is an electronic device, including but not limited to vehicle diagnostic devices in various application scenarios, for example, a mobile terminal such as a smart phone and a tablet computer, or a server and a personal computer. The vehicle ECU flashing method as shown in fig. 1 may include:

s101, acquiring data to be flashed.

For example, after the data to be flashed is developed on the development device in advance by a developer, the data to be flashed is stored in a flash file, and the electronic device first acquires the data to be flashed from the flash file. As can be appreciated, the electronic device and the development device are in communication connection, and the electronic device may first copy or download the flash file from the development device, and then obtain the data to be flashed from the flash file. Exemplarily, in the present embodiment, the electronic device is a vehicle diagnosis device, and the DATA to be flashed includes a program (CODE) or DATA (DATA) of the vehicle ECU.

It is understood that before the data flash of the vehicle ECU is performed, a communication connection needs to be established between the vehicle ECU and the electronic device, and specifically, the communication connection between the vehicle ECU and the electronic device is performed through an automobile diagnosis protocol, for example, through a CAN protocol or a K-wire protocol. When the vehicle ECU and the electronic device are communicatively connected by the vehicle diagnostic protocol, first, the electronic device needs to establish a communication connection with the vehicle ECU according to ECU diagnostic information corresponding to the vehicle ECU On Board Diagnostics (OBD). The ECU diagnosis information is a communication parameter of a preset automobile diagnosis protocol, and it can be understood that the ECU diagnosis information corresponding to different vehicle ECUs is different.

Assuming that the vehicle ECU is an ECU of a vehicle engine system, the electronic device needs to establish a communication connection with the ECU of the vehicle engine system according to ECU diagnosis information of the vehicle engine system, for example, the ECU diagnosis information of the vehicle engine system includes a set protocol type (such as a CAN type), communication pins (such as 6 and 14 pins), a communication baud rate (such as 500K), filtering identification information of the engine system (including sending identification information and receiving identification information, for example, sending identification information of 0xfc00 and receiving identification information of 0xfd00), and the like, and then the electronic device establishes a CAN communication connection with the ECU of the vehicle engine system according to the ECU diagnosis information of the vehicle engine system.

In an optional implementation manner, after the electronic device establishes a communication connection with the vehicle ECU, a second instruction carrying a preset storage address and a number of bytes written with a brush is sent to the vehicle ECU, where the second instruction is used to instruct the vehicle ECU to reserve a target storage space required for storing the number of bytes written with a brush in a storage space corresponding to the preset storage address.

That is to say, before performing the flash operation, the electronic device sends a second instruction to the vehicle ECU to tell the vehicle ECU the memory address and the number of bytes of flash required by the data that needs to be flashed, so that the vehicle ECU processes the corresponding memory space according to the required memory address and the number of bytes of flash, so as to reserve the target memory space required for storing the number of bytes of flash.

For example, the electronic device sends a second command carrying 0x34104400000000000003DC to the vehicle ECU before performing a flash operation, where 00000000 in 0x34104400000000000003DC indicates that a flash is to be started from this position of the ECU and 00003DC indicates the number of bytes to be flashed. The number of bytes to be flashed refers to all the number of bytes occupied by the data to be flashed.

It is understood that under normal conditions, the vehicle ECU operates in a diagnostic mode (also referred to as a default mode), for example, the vehicle engine ECU has functions of reading code and reading data stream values in the diagnostic mode, in which special operations, such as a flash operation, cannot be performed on the vehicle ECU. Therefore, before the flashing operation is performed, it is also necessary to send a mode switching instruction to the vehicle ECU to instruct the vehicle ECU to switch to the flashing mode (also referred to as a programming mode). For example, in some embodiments of the present application, the electronic device instructs the vehicle ECU to switch from the diagnostic mode to the flash mode by sending a third instruction to the vehicle ECU.

In some embodiments of the present application, during the process of switching the vehicle ECU from the diagnosis mode to the flash mode, the vehicle ECU is first required to switch from the diagnosis mode to the extended mode, and in the extended mode, the fault code recording function is turned off, because the vehicle ECU cannot normally communicate during the flash process of the vehicle ECU, the vehicle ECU may record some fault codes, and thus the turning off of the fault code recording function means that the fault codes generated during the flash process of the vehicle ECU do not need to be saved, for example, a command 0x8582 is sent to turn off the fault code recording function. Then, a command is sent to close the mutual access among the vehicle ECUs, because in general, the ECUs of the vehicle can acquire some data through the mutual access, during the flashing process of the vehicle ECUs, the mutual access among the vehicle ECUs needs to be prohibited to prevent an error in the flashing process of the vehicle ECUs, for example, a command 0x288301 is sent to prohibit the mutual access among the vehicle ECUs. And then, the vehicle ECU is switched from the expansion mode to the flash mode, so that the vehicle ECU is guaranteed to be flashed in the flash mode, for example, the vehicle ECU can be switched from the expansion mode to the flash mode by sending a 0x1002 instruction.

In other alternative implementations, the electronic device needs to pass the security verification of the vehicle ECU before performing the flash to prevent the electronic device from performing illegal operations without authorization. For example, before the electronic device performs the flash, the electronic device sends a fourth instruction carrying verification request information to the vehicle ECU, where the fourth instruction is used to instruct the vehicle ECU to perform the flash security verification on the electronic device based on the verification request information.

Illustratively, the fourth instruction sent by the flash device carries a 0x2703 command, after receiving the fourth instruction carrying the 0x2703 command, the vehicle ECU returns verification data carrying a verification command to the flash device, such as 0x670311223344, where 0x6703 is the verification command and 11223344 is the verification data, the verification data carrying the verification command is used for instructing the flash device to calculate the verification data into a preset communication code according to a preset algorithm, and then the preset communication code is returned to the vehicle ECU, when the vehicle ECU verifies that the preset communication code is correct, the safety verification on the flash device is passed, and if the vehicle ECU verifies that the preset communication code is incorrect, the safety verification on the flash device is not passed.

It is understood that the electronic device is allowed to perform the flash operation on the vehicle ECU only in the case where the security verification is passed.

And S102, decomposing the data to be flashed into a preset number of data blocks to be flashed according to the communication protocol type of the vehicle ECU.

For example, after the electronic device establishes a communication connection with the vehicle ECU and acquires the data to be flashed, in order to ensure the independence of the compressed data, the data to be flashed needs to be flashed to the vehicle ECU. In the embodiment of the application, the electronic device decomposes the data to be flashed into a plurality of data blocks to be flashed according to a communication protocol of the vehicle ECU, wherein the number of bytes contained in each data block to be flashed is smaller than or equal to an effective data length supported by the communication protocol of the vehicle ECU, for example, the vehicle engine ECU is communicated based on a CAN protocol, and the effective data length supported by the CAN protocol is 4096 bytes.

For example, 1M of data to be flashed is read from the flash file, where 1M is 1048576 bytes, and since the vehicle engine ECU communicates based on the CAN protocol, each data block to be flashed obtained by decomposition includes no more than 4096 bytes, and it CAN be understood that as long as no more than 4096 bytes, for example, each data block to be flashed includes 100 bytes.

S103, compressing each data block to be flashed respectively to obtain compressed data blocks.

In this embodiment, each data block to be flashed is compressed by a preset compression algorithm, and bytes included in each data block to be flashed are compressed to obtain a compressed data block. Illustratively, the predetermined compression algorithm is a lossless compression algorithm, such as differential encoding, RLE, Huffman encoding, LZW encoding, arithmetic encoding, or the like, which can reconstruct the compressed data without distortion, and accurately restore the original data before compression. Generally, lossless compression algorithms can be used in situations with strict requirements on data accuracy, and it can be understood that, according to different data compression algorithms, the proportion of compressed data blocks obtained after compression is different, and the data size can reach 20% -40% after compression. Specifically, the specific implementation process of each lossless compression algorithm can be referred to the existing explanation, and is not described herein again.

And S104, respectively generating first instructions for flashing the compressed data blocks according to the communication protocol type of the vehicle ECU.

In an embodiment of the application, each compressed data block is filled into a flash command according to a communication protocol type of the vehicle ECU, so as to obtain the first instruction. For example, if the communication protocol type of the vehicle ECU is the CAN protocol, it CAN be known from the CAN protocol that when data is transmitted based on the CAN protocol, each frame of data CAN only be filled with 8 bytes, and therefore, each compressed data block needs to be disassembled and then refilled. In particular, the CAN protocol refers to the ISO15765 communication standard, and the generated first instruction may be represented in the form:

Req:08FC 00 10 3E 36 01 00BB 07 07

079:08FD 00 30 00 0C 00 40 00 00 00

Req:08FC 00 21 89 07 00B1 02 24A1

Req:08FC 00 22A4 20 2C A1 FF 00 2E

Req:08FC 00 23E8 2C 28E9 2C 02 00

Req:08FC 00 24 00 2A A2 79 22E8 28

Req:08FC 00 25 1E 65 02 00 28A4 00

Req:08FC 00 26 2A 88 00 1E DF 46 51

Req:08FC 00 27FE 1E 1D 78 23 1D D7

Req:08FC 00 28E8 51F8 1F 1C 08 02

080:08FD 00 07 76 09 01 29 10 20 30CD

wherein 0x3E represents the length of valid data transmitted this time, 0x36 represents the flash function, 0x01 represents the sequence number of the data block to be flashed, 890700B 10224 a1, a 4202C a1 FF 002E, E82C 28E 92C 0200, 002A A27922E 828, 1E 65020028 a 400, 2a 88001E DF 4651, FE 1E 1D 78231D D7, E851F 81F 1C 0802 represents byte data corresponding to each compressed data block.

It can be understood that, after each data block to be flashed is compressed, the compressed data block obtained after compression generates a flash command based on the communication protocol type and then sends the flash command to the vehicle ECU, and after the vehicle ECU receives the flash command, the vehicle ECU can directly decompress each compressed data block and flash the decompressed data into the vehicle ECU, thereby improving the flash efficiency compared with the overall flash.

And S105, sending the first instruction to the vehicle ECU, wherein the first instruction is used for instructing the vehicle ECU to decompress each compressed data block, and writing data obtained after decompression into a preset storage address of the vehicle ECU respectively.

In this embodiment, after receiving the first instruction, the vehicle ECU replies to the first instruction that the instruction of the data to be written has been received, and according to a predetermined compression method, decompresses and recovers the received compressed data, and then writes the decompressed data into a preset storage address. Optionally, the electronic device may send the predetermined compression method to the vehicle ECU while sending the second instruction carrying the preset storage address and the number of bytes written with the flash to the vehicle ECU, and it may be understood that the decompression algorithm corresponds to the compression algorithm, for example, using the Huffman compression method, and correspondingly needs to use the Huffman compression method for decompression. Further, in this example, data corresponding to each compressed data block needs to be sequentially written into the preset storage location according to the sequence number of each compressed data block, for example, if each compressed data block defines 100 bytes, when each compressed data block is received, the byte corresponding to the 1 st compressed data block is written into the 0-99 position of the preset storage location, and the byte corresponding to the 2 nd compressed data block is written into the 100-199 positions of the preset storage location.

It is understood that the vehicle ECU sends a write success instruction to the electronic device after writing all the byte data included in all the compressed data blocks into the preset storage location. In this embodiment, if the electronic device receives a successful flash command returned by the vehicle ECU, a fifth command is sent to the vehicle ECU, where the fifth command is used to instruct the vehicle ECU to end the flash operation. For example, an instruction carrying 0x37 is sent to the vehicle ECU, where 0x37 indicates the end of the flash.

Optionally, the electronic device may further send a restart instruction and a mode extension instruction to the vehicle ECU to instruct the vehicle ECU to restart after completing the flash, and to turn on a fault code recording function and turn on a communication function between the vehicle ECUs. Correspondingly, the vehicle ECU is instructed to switch from the flashing mode to the diagnosis mode, the vehicle ECU can clear the fault code in the diagnosis mode, and the flashing process is finished.

According to the vehicle ECU flashing method, data to be flashed are decomposed into the data blocks to be flashed of the preset number, the data blocks to be flashed are compressed respectively, first instructions for flashing the compressed data blocks are generated respectively after the compressed data blocks are obtained, the vehicle ECU decompresses the compressed data blocks, data obtained after decompression are written into the preset storage addresses of the vehicle ECU respectively, compared with the situation that all data to be flashed are written into the preset storage addresses of the vehicle ECU simultaneously, the time for flashing the ECU data can be effectively shortened, and the data flashing efficiency of the ECU is improved.

As shown in fig. 2, fig. 2 is a schematic flow chart of a vehicle ECU flashing method provided in another embodiment of the present application. The vehicle ECU in the embodiment executes the subject vehicle ECU of the vehicle ECU flashing method. The vehicle ECU flashing method as shown in fig. 2 may include:

s201, receiving a first instruction sent by an electronic device, wherein the first instruction is an instruction for flashing each compressed data block, the first instruction is generated by the electronic device according to the communication protocol type of the vehicle ECU, decomposing data to be flashed into a preset number of data blocks to be flashed, compressing each data block to be flashed respectively, and generating the compressed data blocks according to the communication protocol type of the vehicle ECU.

Optionally, before receiving the first instruction, the vehicle ECU may further receive a second instruction sent by the electronic device, where the second instruction carries the preset storage address and the number of bytes written;

S202, decompressing the compressed data blocks according to the first instruction.

And S203, writing the decompressed data into preset storage addresses of the vehicle ECU respectively.

It should be noted that the specific implementation process of the steps S201 to S203 is described in detail in the embodiment shown in fig. 1, and is not described again here.

As shown in fig. 3, fig. 3 is a schematic view of an application scenario of the vehicle ECU flashing method provided in the embodiment of the present application. As can be seen from fig. 3, the vehicle ECU flashing method provided in the embodiment of the present application is applied to a vehicle ECU flashing system 300, where the vehicle ECU flashing system 300 includes an electronic device 301 and a vehicle ECU302, and the electronic device 301 is communicatively connected to the vehicle ECU 302. Wherein the content of the first and second substances,

the electronic device 301 is configured to acquire data to be flashed, decompose the data to be flashed into a preset number of data blocks to be flashed according to a communication protocol type of a vehicle ECU, compress each data block to be flashed respectively, generate a first instruction for flashing each compressed data block according to the communication protocol type of the vehicle ECU after obtaining the compressed data blocks, and send the first instruction to the vehicle ECU;

the vehicle ECU302 is configured to decompress each of the compressed data blocks according to the first instruction, and write data obtained after decompression into a preset storage address of the vehicle ECU respectively.

Based on the three test examples, after the vehicle ECU flashing method provided by the application is adopted to compress the data to be flashed, the time for flashing the ECU can be effectively reduced, and the data flashing efficiency of the ECU is improved.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Based on the vehicle ECU flashing method provided by the embodiment, the embodiment of the invention further provides an embodiment of a device for realizing the embodiment of the method.

Referring to fig. 4, fig. 4 is a schematic view of a vehicle electronic device according to an embodiment of the present disclosure. The modules included are used to perform the steps in the embodiment corresponding to fig. 1. Please refer to fig. 1 for the related description of the corresponding embodiment. For convenience of explanation, only the portions related to the present embodiment are shown. Referring to fig. 4, the vehicle electronic device 4 includes:

the obtaining module 401 is configured to obtain data to be flashed.

A decomposition module 402, configured to decompose the data to be flashed into a preset number of data blocks to be flashed according to a communication protocol type of the vehicle ECU.

And a compressing module 403, configured to compress each data block to be flashed, to obtain a compressed data block.

A generating module 404, configured to generate a first instruction for flushing each compressed data block according to a communication protocol type of the vehicle ECU.

A first sending module 405, configured to send the first instruction to the vehicle ECU, where the first instruction is used to instruct the vehicle ECU to decompress each compressed data block, and write data obtained after decompression into a preset storage address of the vehicle ECU respectively.

In an optional implementation manner, the method further includes:

and the second sending module is used for sending a second instruction carrying the preset storage address and the number of bytes written with the brush to the vehicle ECU, and the second instruction is used for indicating the vehicle ECU to reserve a target storage space required for storing the number of bytes written with the brush in a storage space corresponding to the preset storage address.

In an optional implementation manner, the method further includes:

the third sending module is used for establishing communication connection with the vehicle ECU and sending a third instruction to the vehicle ECU, wherein the third instruction is used for indicating the vehicle ECU to be switched from a diagnosis mode to a flash mode;

and the fourth sending module is used for sending a fourth instruction carrying verification request information to the vehicle ECU, and the fourth instruction is used for instructing the vehicle ECU to perform flash safety verification on the electronic equipment based on the verification request information.

In an optional implementation manner, the method further includes:

and the fifth sending module is used for sending a fifth instruction to the vehicle ECU if a brushing success instruction returned by the vehicle ECU is received, wherein the fifth instruction is used for indicating the vehicle ECU to finish brushing operation.

It should be noted that, because the contents of information interaction, execution process, and the like between the modules are based on the same concept as the method embodiment shown in fig. 1 of the present application, specific functions and technical effects thereof may be referred to specifically in the method embodiment section, and are not described herein again.

FIG. 5 is a schematic diagram of a vehicle ECU provided in an embodiment of the present application. The modules included are used to perform the steps in the corresponding embodiment of fig. 2. Please refer to fig. 2 for a related description of the embodiment. For convenience of explanation, only the portions related to the present embodiment are shown. Referring to fig. 5, the vehicle ECU5 includes:

the first receiving module 501 is configured to receive a first instruction sent by an electronic device, where the first instruction is an instruction for flushing each compressed data block, and the first instruction is generated by the electronic device according to a communication protocol type of a vehicle ECU, and after the first instruction decomposes data to be flushed into a preset number of data blocks to be flushed according to the communication protocol type of the vehicle ECU, the data blocks to be flushed are compressed respectively, and compressed data blocks are obtained and then generated according to the communication protocol type of the vehicle ECU.

A decompression module 502, configured to decompress each of the compressed data blocks according to the first instruction.

And a writing module 503, configured to write the decompressed data into preset storage addresses of the vehicle ECUs, respectively.

In an optional implementation manner, the method further includes:

the second receiving module is used for receiving a second instruction sent by the electronic equipment, wherein the second instruction carries the preset storage address and the number of bytes to be written;

and the reservation module is used for reserving a target storage space required for storing the number of the flash bytes in the storage space corresponding to the preset storage address according to the second instruction.

It should be noted that, because the contents of information interaction, execution process, and the like between the modules are based on the same concept as the method embodiment shown in fig. 2 of the present application, specific functions and technical effects thereof may be referred to specifically in the method embodiment section, and are not described herein again.

Fig. 6 is a schematic diagram of an electronic device provided in an embodiment of the present application. As shown in fig. 6, the electronic apparatus 301 of this embodiment includes: a processor 600, a memory 601 and a computer program 602, such as a vehicle ECU flash program, stored in said memory 601 and operable on said processor 600. The steps in the embodiment of the vehicle ECU flashing method shown in fig. 1 described above are implemented when the processor 600 executes the computer program 602. Alternatively, the processor 600 implements the functions of the modules/units in the above-described embodiment of the apparatus in fig. 4 when executing the computer program 602.

Illustratively, the computer program 602 may be partitioned into one or more modules/units that are stored in the memory 601 and executed by the processor 600 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 602 in the electronic device 301. For example, the computer program 602 may be divided into an obtaining module, a decomposing module, a compressing module, a generating module, and a first sending module, and specific functions of each unit please refer to the related description in the embodiment corresponding to fig. 4, which is not described herein again.

The electronic device may include, but is not limited to, a processor 600, a memory 601. Those skilled in the art will appreciate that fig. 6 is merely an example of the electronic device 301 and does not constitute a limitation of the electronic device 301 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the electronic device may also include input-output devices, network access devices, buses, etc.

The Processor 600 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 601 may be an internal storage unit of the electronic device 301, such as a hard disk or a memory of the electronic device 301. The memory 601 may also be an external storage device of the electronic device 301, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the electronic device 301. Further, the memory 601 may also include both an internal storage unit and an external storage device of the electronic device 301. The memory 601 is used for storing the computer program and other programs and data required by the electronic device. The memory 601 may also be used to temporarily store data that has been output or is to be output.

Fig. 7 is a schematic diagram of a vehicle ECU provided in an embodiment of the present application. As shown in fig. 7, the vehicle ECU302 of the embodiment includes: a processor 700, a memory 701 and a computer program 702, such as a vehicle ECU flash program, stored in said memory 701 and operable on said processor 700. The steps in the vehicle ECU flashing method embodiment described above in fig. 2 are implemented when the processor 700 executes the computer program 702. Alternatively, the processor 700 implements the functions of the modules/units in the above-described apparatus embodiment of fig. 5 when executing the computer program 702.

Illustratively, the computer program 702 may be partitioned into one or more modules/units that are stored in the memory 701 and executed by the processor 700 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 702 in the vehicle ECU 302. For example, the computer program 702 may be divided into a first receiving module, a decompressing module, and a writing and sending module, and specific functions of each unit are described in the embodiment corresponding to fig. 5, which is not described herein again.

The vehicle ECU may include, but is not limited to, a processor 700, a memory 701. It will be understood by those skilled in the art that fig. 7 is merely an example of the vehicle ECU302, and does not constitute a limitation of the vehicle ECU302, and may include more or less components than those shown, or some components in combination, or different components, for example, the video processing device may further include an input-output device, a network access device, a bus, etc.

The Processor 700 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 701 may be an internal storage unit of the electronic device 301, such as a hard disk or an internal memory of the vehicle ECU 302. The memory 701 may also be an external storage device of the vehicle ECU302, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the vehicle ECU 302. Further, the memory 701 may also include both an internal storage unit and an external storage device of the vehicle ECU 302. The memory 701 is used to store the computer program and other programs and data required by the vehicle ECU 302. The memory 701 may also be used to temporarily store data that has been output or is to be output.

The embodiment of the application also provides a computer-readable storage medium, which stores a computer program, and the computer program can implement the vehicle ECU flashing method shown in fig. 1 or fig. 2 when being executed by a processor.

The embodiment of the application provides a computer program product, which when running on an electronic device, enables the electronic device to implement the vehicle ECU flashing method shown in fig. 1 when executed, or enables the vehicle ECU to implement the vehicle ECU flashing method shown in fig. 2 when executed.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A method for flashing an ECU of a vehicle electronic control unit is applied to electronic equipment, and is characterized by comprising the following steps:

acquiring data to be flashed;

2. The method of claim 1, prior to sending the first instruction to the vehicle ECU, further comprising:

3. The method according to claim 1 or 2, wherein before the obtaining the data to be flashed, further comprising:

4. The method of claim 3, further comprising, after sending the first instruction to the vehicle ECU:

5. A data flashing method of an Electronic Control Unit (ECU) of a vehicle is applied to the ECU of the vehicle, and is characterized by comprising the following steps:

decompressing each compressed data block according to the first instruction;

6. The method of claim 5, wherein prior to the first instruction sent in response to the electronic device, further comprising:

7. A vehicle Electronic Control Unit (ECU) flashing method is applied to a vehicle ECU data flashing system, and is characterized in that the vehicle ECU data flashing system comprises an electronic device and a vehicle ECU, wherein the electronic device is in communication connection with the vehicle ECU, and the method comprises the following steps:

8. An electronic device, comprising:

a memory for storing a vehicle ECU flash program;

a processor for implementing the vehicle ECU flashing method as claimed in any one of claims 1 to 4 when executing the vehicle ECU flashing program.

9. A vehicle ECU characterized by comprising:

a memory for storing a vehicle ECU flash program;

a processor for implementing the vehicle ECU flashing method as claimed in any one of claims 5 or 6 when executing the vehicle ECU flashing program.

10. A computer-readable storage medium storing a computer program, characterized in that the computer program realizes the vehicle ECU flashing method according to any one of claims 1 to 4 when executed by a processor, or the computer program realizes the vehicle ECU flashing method according to any one of claims 5 or 6 when executed by a processor.