CN114860277A - Automobile ECU software compression upgrading system and method, electronic equipment and storage medium - Google Patents
Automobile ECU software compression upgrading system and method, electronic equipment and storage medium Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000006837 decompression Effects 0.000 claims description 13
- 238000003745 diagnosis Methods 0.000 abstract description 18
- 230000001680 brushing effect Effects 0.000 description 12
- 238000005457 optimization Methods 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
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Abstract
The invention discloses a compression and upgrade system, a method, electronic equipment and a storage medium for automobile ECU software, comprising S1, compressing executable programs in an ECU software upgrade package; s2, deploying the ECU software upgrading package to an upper computer node for flashing the ECU, and analyzing the ECU software upgrading package by the upper computer node to obtain a compression package of the executable program; s3, transmitting the compressed packet blocks of the executable program to the ECU and storing the compressed packet blocks in a buffer area; s4, the ECU decompresses the partitioned compressed packets in the buffer area, writes the decompressed data into the ECU in a flashing manner, and empties the buffer area after the flashing is finished; and S5, repeating the steps S3-S4 until the flash of the executable program is completed. The invention effectively improves the flash efficiency of the ECU software upgrading process and saves the OTA upgrading time or UDS diagnosis flash time of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of automobile electronic software, and particularly relates to an automobile ECU software compression upgrading system, method, electronic equipment and storage medium.
Background
Since the OTA upgrading of automobiles is on the surface, all large automobile enterprises follow up quickly, the OTA upgrading is used as one of essential basic capabilities of intelligent networked automobiles, and the value of the OTA upgrading is also in agreement in the industry. With the development of the automobile industry becoming faster and faster, people also put forward more and more requirements on services provided by automobiles, and the functions of the automobiles become more and more abundant and perfect. At the same time, the software systems in the vehicle are becoming increasingly larger, and the number of ECUs is also increasing in multiples. ECU software upgrading is used as an indispensable ring in OTA upgrading and UDS diagnosis and flash upgrading of automobiles, and directly influences the efficiency and safety of upgrading.
In a traditional ECU software upgrading mode, a diagnosis upper computer (comprising ECU diagnosis equipment and an in-vehicle ECU diagnosis node) sends brushing information to a lower computer ECU, an initial physical address of the ECU is appointed before brushing, a specific message in the brushing information is analyzed during brushing, and then the specific message is directly written into a physical address space corresponding to the ECU.
However, the existing scheme still has the following defects that the brushing information transmitted by the upper computer node is consistent with the information actually written by the ECU during brushing, although the software implementation is simpler, the transmitted message is not compressed, the brushing efficiency is not improved as much as possible, and meanwhile, the probability of abnormal problems in the upgrading process is increased due to the relatively long brushing time.
For example, the chinese patent CN202010580399.0 discloses a method and device for flashing a vehicle ECU, a vehicle ECU and a storage medium, which adopt a compressed flashing mode, but need to divide a compressed file into data blocks to be flashed in advance, then compress the data blocks to be flashed to obtain compressed data blocks, and finally transmit the compressed data blocks to the ECU for decompression and then flashing. Although the method can achieve a certain effect, the implementation process is complicated, and each data block is independently transmitted and customized in advance, so that the brushing efficiency still has a certain loss.
Disclosure of Invention
In order to solve the problems, the invention provides a system, a method, electronic equipment and a storage medium for compressing and upgrading automobile ECU software, so that the flashing efficiency in the ECU software upgrading process is improved, and the OTA upgrading time or UDS diagnosis flashing time of the whole automobile is saved.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows: an automobile ECU software compression upgrading system comprises,
the file compression node is used for compressing the executable program in the ECU software upgrading package;
the upper computer node is used for deploying the ECU software upgrading package through the OTA of the whole vehicle, analyzing the ECU software upgrading package, acquiring a compression package of an executable program and sending the flash information of the software upgrading to the ECU;
and the ECU is used for receiving the flash information of the upper computer node, decompressing the flash information and then flashing the flash information into the corresponding physical address space to complete software upgrading.
Based on the system, the invention also provides a method for compressing and upgrading automobile ECU software, which comprises the following steps,
s1, compressing the executable program in the ECU software upgrading package;
s2, deploying the ECU software upgrading package to an upper computer node for flashing the ECU, and analyzing the ECU software upgrading package by the upper computer node to obtain a compression package of the executable program;
s3, transmitting the compressed packet blocks of the executable program to the ECU and storing the compressed packet blocks in a buffer area;
s4, the ECU decompresses the partitioned compressed packets in the buffer area, writes the decompressed data into the ECU in a flashing manner, and empties the buffer area after the flashing is finished;
and S5, repeating the steps S3-S4 until the flash of the executable program is completed.
And as optimization, the ECU software upgrading package comprises an executable program compression package and version information, and the executable program is compressed by the file compression node through a compression algorithm to form the executable program compression package.
And as optimization, the ECU software upgrading package is deployed to an upper computer node through the whole OTA, wherein the upper computer node comprises ECU diagnosis equipment and/or an in-vehicle ECU diagnosis node.
In step S3, the ECU controls the data length of the block compressed packet transmitted to the ECU by the upper node through the flow control frame.
As an optimization, the block transmission comprises,
s301, the upper computer node sends a software upgrading request to the ECU, and when the ECU meets a software upgrading condition, the software upgrading request is responded;
s302, the upper computer node sends an executable program to the ECU to refresh the first frame of information;
s303, after receiving the first frame, the ECU calculates the data receiving length of the buffer area;
s304, calculating the number of continuous frames sent by the upper computer node to the ECU according to the data receiving length and each frame payload, and filling the number of the continuous frames into a flow control frame of the upper computer node;
s305, after the ECU receives and finishes the continuous frames, the block transmission of the executable program compressed packet is finished.
As an optimization, step S4 includes,
s401, after the ECU and the upper computer node finish one-time block transmission, requesting the upper computer node to wait, and linking the data in the buffer area to a decompression sliding window according to the byte sequence;
s402, after all data in the buffer area are decompressed, the decompressed data are written into a physical address space corresponding to the ECU;
and S403, emptying the data in the buffer after the writing is finished.
As an optimization, after the ECU completes the flashing of the executable program, the uncompressed version information is flashed.
Based on the above method, the present invention also provides an electronic device comprising,
a memory for storing an ECU flash program;
and the processor is used for realizing the automobile ECU software compression and upgrading method when the ECU flash program is executed.
Based on the method, the invention further provides a storage medium, wherein one or more programs are stored in the storage medium, and when the one or more programs are executed by the processor, the steps of the automobile ECU software compression and upgrade method are executed.
Compared with the prior art, the invention has the following advantages:
the ECU executable program is compressed, wherein the ECU executable program refers to executable program data which needs to be actually written into an ECU physical address space, and information such as a version is added to form an ECU software upgrading package. The ECU software upgrading package is deployed to an upper computer node (comprising ECU diagnosis equipment and an in-vehicle ECU diagnosis node) of the flash ECU through the whole-vehicle OTA, and the upper computer node analyzes the software upgrading package to obtain version information and an executable program compression package. The upper computer node sends ECU executable program flashing information to the ECU, and the ECU executable program flashing information is compressed; and the ECU controls the length of the information flashing of an executable program of the ECU transmitted by the upper computer node at a single time through the flow control frame, and stores the information flashing in the receiving buffer area. The ECU decompresses the data in the buffer area, writes the decompressed data into a physical address space corresponding to the ECU, records the number of bytes which are written in a flashing manner, and clears the data in the buffer area; until the ECU executable program is flushed. The upper computer node sends ECU version flash information to the ECU, the ECU performs flash after receiving the version information, and the ECU version flash information is original data and is not compressed. The invention adopts a mode of compressing the ECU software upgrading packet, can reduce information transmission between the upper computer and the lower computer, simultaneously transmits the ECU software upgrading packet as a whole, and carries out block decompression and flashing at the ECU end, thereby not only improving the OTA upgrading efficiency of the whole vehicle and the UDS diagnosis flashing efficiency, saving the OTA upgrading time and the UDS diagnosis flashing time of the whole vehicle, and reducing the probability of abnormal conditions of OTA upgrading and UDS flashing.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a flow chart of ECU software upgrade package compression of the present invention;
FIG. 3 is a flowchart of an ECU software upgrade package deployment of the present invention;
FIG. 4 is a flowchart of an ECU software upgrade package flashing of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
Example (b): with reference to figure 1 of the drawings,
an automobile ECU software compression upgrading system comprises,
and the file compression node is used for compressing the executable program in the ECU software upgrading package. Responsible for compressing the executable program in the ECU software upgrade package using a suitable compression algorithm (e.g., LZSS, etc.).
The upper computer node is used for deploying the ECU software upgrading package through the OTA of the whole vehicle, analyzing the ECU software upgrading package, acquiring a compression package of an executable program and sending the flash information of the software upgrading to the ECU; specifically, the upper computer node is responsible for receiving and analyzing the ECU software upgrading package and sending the flash information to the ECU for upgrading, and the upper computer node comprises ECU diagnosis equipment and in-vehicle ECU diagnosis nodes.
And the ECU is used for receiving the flash information of the upper computer node, decompressing the flash information and then flashing the flash information into the corresponding physical address space to complete software upgrading. Specifically, the ECU, i.e., the electronic control unit, is responsible for receiving the flush information from the upper computer node, performing decompression processing after caching the flush information, and then flushing the flush information to the corresponding physical address space.
Based on the system, the invention also provides a method for compressing and upgrading automobile ECU software, which comprises the following steps,
s1, compressing the executable program in the ECU software upgrading package; the ECU software upgrading package comprises an executable program compression package and version information, and the executable program is compressed by a file compression node through a compression algorithm to form the executable program compression package.
And S2, deploying the ECU software upgrading package to an upper computer node for flashing the ECU through the OTA of the whole vehicle, and analyzing the ECU software upgrading package by the upper computer node to obtain a compression package of the executable program.
S3, transmitting the compressed packet blocks of the executable program to the ECU and storing the compressed packet blocks in a buffer area; and the ECU controls the data length of the block compressed packet transmitted to the ECU by the upper computer node through the flow control frame. The block transmission includes the transmission of the block,
s301, the upper computer node sends a software upgrading request to the ECU, and when the ECU meets a software upgrading condition, the software upgrading request is responded;
s302, the upper computer node sends an executable program to the ECU to refresh the first frame of information;
s303, after receiving the first frame, the ECU calculates the data receiving length of the buffer area;
s304, calculating the number of continuous frames sent by the upper computer node to the ECU according to the data receiving length and each frame payload, and filling the number of the continuous frames into a flow control frame of the upper computer node;
s305, after the ECU receives and finishes the continuous frames, the block transmission of the executable program compressed packet is finished.
And S4, decompressing the partitioned compressed packets in the buffer by the ECU, flushing the decompressed data into the ECU, and emptying the buffer after the flushing is finished.
S401, after the ECU and the upper computer node finish one-time block transmission, requesting the upper computer node to wait, and linking the data in the buffer area to a decompression sliding window according to the byte sequence;
s402, after all data in the buffer area are decompressed, the decompressed data are written into a physical address space corresponding to the ECU;
and S403, emptying the data in the buffer area after the writing is finished.
And S5, repeating the steps S3-S4 until the flash of the executable program is completed. After the ECU completes the flashing of the executable program, the uncompressed version information is flashed.
Specifically, as shown in fig. 2, the ECU software upgrade package compresses: the file compression node calls a compression algorithm to compress the ECU executable program, and the selection of the compression algorithm selects a dictionary type compression algorithm based on a window as much as possible, such as an LZSS compression algorithm, in order to avoid unnecessary overhead; obtaining an ECU executable program compression package after compression, and adding information such as versions and the like to form an ECU software upgrading package;
as shown in fig. 3, the ECU software upgrade package deploys: if the ECU is upgraded through the OTA, the ECU software upgrading packet needs to be transmitted to the interior of the automobile through a wireless link through a cloud background, and then reaches an upper computer node through the forwarding process of the interior of the automobile; if the ECU diagnostic equipment is used for ECU software upgrading, only the ECU software upgrading package to be upgraded needs to be copied into the ECU diagnostic equipment;
as shown in fig. 4, the ECU software upgrade package is flashed: analyzing the ECU software upgrading package before the ECU software upgrading package is written to obtain an ECU version and an executable program compression package; the upper computer node requests to upgrade the ECU, and the ECU enters a flash mode after the upgrade condition of the ECU is met; the upper computer firstly writes an ECU executable program, the upper computer sends an ECU executable program flash information first frame to the ECU, the ECU calculates the residual receiving length of the buffer area after receiving the first frame, calculates the number of continuous frames which should be sent by the upper computer according to the receiving length and the payload of each frame, and fills the number of the continuous frames into the flow control frame which returns the upper computer node; after the ECU receives the continuous frames, the one-time flash information transmission is completed, the ECU requests the upper computer node to wait, the data of the receiving buffer area is linked to the decompression sliding window according to the byte sequence, the decompression of the decompression data unit is completed each time, the decompression sliding window moves forwards until the decompression of the whole receiving buffer area is completed, and the decompressed data is written into the corresponding physical address space; if the last decompressed data unit is divided into two times of brushing information transmission, the total number of brushing bytes before the decompressed data unit should be recorded, since the decompression sliding window can store the divided part of the decompressed data, the receiving buffer can be emptied, if the last decompressed data unit is not divided, the total number of received bytes is equal to the total number of brushing bytes; and after the ECU executable program is refreshed, refreshing version information of the ECU, wherein the refreshing information sent by the upper computer node is not compressed.
Based on the above method, the present invention also provides an electronic device comprising,
a memory for storing an ECU flash program;
and the processor is used for realizing the automobile ECU software compression and upgrading method when the ECU flash program is executed.
Based on the method, the invention further provides a storage medium, wherein one or more programs are stored in the storage medium, and when the one or more programs are executed by the processor, the steps of the automobile ECU software compression and upgrade method are executed.
The ECU executable program is compressed, wherein the ECU executable program refers to executable program data which needs to be actually written into an ECU physical address space, and information such as a version is added to form an ECU software upgrading package. The ECU software upgrading package is deployed to an upper computer node (comprising ECU diagnosis equipment and an in-vehicle ECU diagnosis node) of the flash ECU through the whole-vehicle OTA, and the upper computer node analyzes the software upgrading package to obtain version information and an executable program compression package. The upper computer node sends ECU executable program flashing information to the ECU, and the ECU executable program flashing information is compressed; and the ECU controls the length of the information flashing of an ECU executable program transmitted by the upper computer node at a single time through the flow control frame, and stores the information flashing in the receiving buffer area. The ECU decompresses the data in the buffer area, writes the decompressed data into a physical address space corresponding to the ECU, records the number of bytes which are written in a flashing manner, and clears the data in the buffer area; until the ECU executable program is flushed. And the upper computer node sends ECU version flashing information to the ECU, the ECU performs flashing after receiving the version information, and the ECU version flashing information is original data and is not compressed. The invention adopts a mode of compressing the ECU software upgrading packet, can reduce information transmission between the upper computer and the lower computer, simultaneously transmits the ECU software upgrading packet as a whole, and carries out block decompression and flashing at the ECU end, thereby not only improving the OTA upgrading efficiency of the whole vehicle and the UDS diagnosis flashing efficiency, saving the OTA upgrading time and the UDS diagnosis flashing time of the whole vehicle, and reducing the probability of abnormal conditions of OTA upgrading and UDS flashing.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (10)
1. An automobile ECU software compression upgrading system is characterized by comprising,
the file compression node is used for compressing the executable program in the ECU software upgrading package;
the upper computer node is used for deploying the ECU software upgrading package through the OTA of the whole vehicle, analyzing the ECU software upgrading package, acquiring a compression package of an executable program and sending the flash information of the software upgrading to the ECU;
and the ECU is used for receiving the flash information of the upper computer node, decompressing the flash information and then flashing the flash information into the corresponding physical address space to complete software upgrading.
2. A compression upgrading method for automobile ECU software is characterized by comprising the following steps,
s1, compressing the executable program in the ECU software upgrading package;
s2, deploying the ECU software upgrading package to an upper computer node for flashing the ECU, and analyzing the ECU software upgrading package by the upper computer node to obtain a compression package of the executable program;
s3, transmitting the compressed packet blocks of the executable program to the ECU and storing the compressed packet blocks in a buffer area;
s4, the ECU decompresses the partitioned compressed packets in the buffer area, writes the decompressed data into the ECU in a flashing manner, and empties the buffer area after the flashing is finished;
and S5, repeating the steps S3-S4 until the flash of the executable program is completed.
3. The method of claim 2, wherein the ECU software upgrade package comprises an executable program compression package and version information, which is compressed by the file compression node using a compression algorithm to process the executable program into a compressed package of the executable program.
4. The method of claim 2, wherein the ECU software upgrade package is deployed to an upper computer node by a full vehicle OTA, wherein the upper computer node comprises an ECU diagnostic device and/or an in-vehicle ECU diagnostic node.
5. The method according to claim 2, wherein in step S3, the ECU controls the data length of the block compressed packets transmitted to the ECU by the upper computer node through the flow control frame.
6. The method of claim 5, wherein the block transmission comprises,
s301, the upper computer node sends a software upgrading request to the ECU, and when the ECU meets a software upgrading condition, the software upgrading request is responded;
s302, the upper computer node sends an executable program to the ECU to refresh the first frame of information;
s303, after receiving the first frame, the ECU calculates the data receiving length of the buffer area;
s304, calculating the number of continuous frames sent by the upper computer node to the ECU according to the data receiving length and each frame payload, and filling the number of the continuous frames into a flow control frame of the upper computer node;
s305, after the ECU receives and finishes the continuous frames, the block transmission of the executable program compressed packet is finished.
7. The method according to claim 6, wherein step S4 includes,
s401, after the ECU and the upper computer node finish one-time block transmission, requesting the upper computer node to wait, and linking the data in the buffer area to a decompression sliding window according to the byte sequence;
s402, after all data in the buffer area are decompressed, the decompressed data are written into a physical address space corresponding to the ECU;
and S403, emptying the data in the buffer after the writing is finished.
8. The method according to claim 7, wherein the uncompressed processed version information is flashed after the ECU completes the flashing of the executable program.
9. An electronic device, comprising,
a memory for storing an ECU flash program;
a processor for implementing the automobile ECU software compression upgrading method according to any one of claims 2 to 8 when executing the ECU flash program.
10. A storage medium storing one or more programs which, when executed by a processor, perform the steps of the method for compression upgrading of automotive ECU software according to any one of claims 2 to 8.
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