CN114546455A - MCU software upgrading method and device for double partitions - Google Patents
MCU software upgrading method and device for double partitions Download PDFInfo
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- CN114546455A CN114546455A CN202210347289.9A CN202210347289A CN114546455A CN 114546455 A CN114546455 A CN 114546455A CN 202210347289 A CN202210347289 A CN 202210347289A CN 114546455 A CN114546455 A CN 114546455A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/654—Updates using techniques specially adapted for alterable solid state memories, e.g. for EEPROM or flash memories
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/656—Updates while running
Abstract
The application provides a method and a device for upgrading MCU software of double partitions, which relate to the technical field of vehicle-mounted equipment, and specifically comprise the following steps: when an instruction that the SOC end reads a software upgrading data packet is received, updating an upgrading state mark of the Flash area into an upgrading initiation mark; receiving the total frame number of a software upgrading data packet sent by the SOC end, and carrying out a data packet request to the SOC end according to the total frame number; when a data packet of the total frame number is received, caching a software upgrading data packet in a second partition of the APP area, and updating the upgrading state mark into a software upgrading mark for initiating upgrading; when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark, copying a software upgrading data packet of a second partition of the APP area to the first partition, and updating the upgrading state mark to an initial mark; and controlling the MCU to enter a first partition of the APP area to run the upgraded software codes. The reliability of MCU software upgrading is improved, and the user experience is improved.
Description
Technical Field
The application relates to the technical field of vehicle-mounted equipment, in particular to a method and a device for upgrading MCU software of double partitions.
Background
Software upgrading of the traditional MCU is a single-partition scheme, and the FLASH area is divided into a BOOT area and an APP area. The application code of the scheme only has one copy, and can be erased after upgrading is initiated, and once abnormal conditions such as power failure and the like occur in the upgrading process, the MCU does not execute the application code. Resulting in a poor experience during driving by the user.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for upgrading dual-partition MCU software to solve the above technical problems.
In a first aspect, the present application provides a method for upgrading MCU software in dual partitions, which is applied to an MCU and includes:
when an instruction that an SOC end reads a software upgrading data packet is received, updating an upgrading state mark of a Flash area to an upgrading initiation mark, and updating the upgrading state mark to an initial mark when the MCU is detected to enter a BOOT area and the upgrading state mark is the upgrading initiation mark;
receiving the total frame number of a software upgrading data packet sent by the SOC end, and requesting the SOC end for the data packet according to the total frame number;
when a data packet of the total frame number is received, caching a software upgrading data packet in a second partition of the APP area, and updating an upgrading state mark into a software upgrading mark;
when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark, copying a software upgrading data packet of a second partition of the APP area to a first partition of the APP area, and updating the upgrading state mark to an initial mark;
and controlling the MCU to enter a first partition of the APP area to run the upgraded software codes.
Further, the method further comprises: the APP area is divided into a first partition and a second partition, the first partition is used for storing the software data packets, and the second partition is used for caching the software upgrading data packets.
Further, the method further comprises: and carrying out verification and frame sequence number detection on the received data frame sent by the SOC terminal.
Further, when a data packet request is made to the SOC side according to the total frame number, if a communication interruption or an abnormal power outage occurs, the method further includes:
and when the MCU is detected to be restarted and enter the BOOT area and the upgrade state mark is an initial mark, controlling the MCU to run the software code of the historical version of the first partition, and waiting for the SOC end to initiate software upgrade again.
Further, in the process of copying the software upgrade data packet of the second partition to the first partition, if power failure occurs, the method further includes:
and copying the software upgrading data packet of the second partition to the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark.
In a second aspect, an embodiment of the present application provides a dual-partition MCU software upgrading apparatus, applied to an MCU, including:
the upgrading initiating starting unit is used for updating the upgrading state mark of the Flash area to an upgrading initiating mark when an instruction that the SOC end reads the software upgrading data packet is received, and updating the upgrading state mark to an initial mark when the MCU is detected to enter the BOOT area and the upgrading state mark is the upgrading initiating mark;
the data packet request unit is used for receiving the total frame number of the software upgrading data packet sent by the SOC end and requesting the SOC end for the data packet according to the total frame number;
the data packet caching unit is used for copying a software upgrading data packet of a second partition of the APP area to a first partition of the APP area and updating the upgrading state mark into an initial mark when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark;
the data packet copying unit is used for copying the software upgrading data packet of the second partition of the APP area to the first partition of the APP area and updating the upgrading state mark into an initial mark when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is the software updating mark;
and the upgrading operation unit is used for controlling the MCU to enter the first partition of the APP area to operate the upgraded software codes.
Further, the apparatus further comprises: the partition unit is used for partitioning the APP area into a first partition and a second partition, wherein the first partition is used for storing the software data packet, and the second partition is used for caching the software upgrading data packet.
Further, the apparatus further comprises: and the data checking unit is used for checking the received data frame sent by the SOC end and detecting the frame sequence number.
Further, when a packet request is made to the SOC side according to the total frame number, if a communication interruption or an abnormal power outage occurs, the apparatus further includes: and the first exception handling unit is used for controlling the MCU to run the software code of the historical version of the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrade state mark is the initial mark, and waiting for the SOC end to initiate software upgrade again.
Further, in the process of copying the software upgrade data packet of the second partition to the first partition, if power failure occurs, the apparatus further includes: and the second exception handling unit is used for copying the software upgrading data packet of the second partition to the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is the software updating mark.
The reliability of MCU software upgrading is improved, and the user experience is improved.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of existing MCU software upgrade provided in an embodiment of the present application;
fig. 2 is a schematic diagram of MCU software upgrade of dual partitions according to an embodiment of the present application.
Fig. 3 is a flowchart of a method for upgrading dual-partition MCU software according to an embodiment of the present application;
fig. 4 is a functional structure diagram of a dual-partition MCU software upgrading apparatus according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
First, the design idea of the embodiment of the present application is briefly introduced.
Software upgrading of the conventional MCU is a single partition scheme, and the FLASH area is divided into a BOOT area and an APP area, as shown in fig. 1: restarting software, successfully upgrading APP area codes, and jumping a program to APP operation; initiating an upgrading process, and jumping the program to the initial address of the BOOT area for operation; thirdly, after the upgrade is finished, the update code is written into the APP area, and the software is restarted; fourthly, the upgrading fails, and no APP code is available. The application code of the scheme only has one copy, and can be erased after upgrading is initiated, and once abnormal conditions such as power failure and the like occur in the upgrading process, the MCU does not execute the application code. Resulting in a poor experience during driving by the user.
In order to solve the technical problems, the application provides a method for upgrading MCU software with double partitions, and a FLASH area of the MCU is ensured to always store a complete application code by means of dividing a code backup area, recording an upgrading process and the like. Even if abnormal power failure occurs in the upgrading process, the MCU still has a software version capable of running, related application functions cannot be lost, and the function loss risk of the vehicle machine system is reduced, as shown in fig. 2: firstly, restarting software, wherein no update code exists in an APP-B areｃA, and ｃA program jumps to an APP-A for operation; initiating an upgrading process, and jumping the program to the initial address of the BOOT area for operation; thirdly, after the upgrade is finished, the update code is written into the APP-B area, and the software is restarted; and fourthly, the APP-B areｃA has an updating code, the updating code is copied to the APP-A areｃA, and the operation is carried out by jumping to the initial address of the APP-A.
In the embodiment of the application, a FLASH area of an MCU is divided into a code backup area for caching the latest software data packet; the FLASH area stores an upgrading mark for recording the current upgrading state; the data frame is checked and the frame number is detected in the upgrading process; and after the upgrade is confirmed to be completed, the software package copy is written into the operation area. Therefore, various exceptions can be processed in time in the software upgrading process of the MCU, the reliability of MCU software upgrading is improved, and the user experience is improved.
After introducing the application scenario and the design concept of the embodiment of the present application, the following describes a technical solution provided by the embodiment of the present application.
As shown in fig. 3, an embodiment of the present application provides a method for upgrading MCU software with dual partitions, which is applied to an MCU and includes the following steps:
step 101: when an instruction that an SOC end reads a software upgrading data packet is received, updating an upgrading state mark of a Flash area to an upgrading initiation mark, and updating the upgrading state mark to an initial mark when the MCU is detected to enter a BOOT area and the upgrading state mark is the upgrading initiation mark;
firstly, the APP area is divided into a first partition and a second partition, the first partition is used for storing the software data packets, and the second partition is used for caching the software upgrading data packets. Wherein the first partition corresponds to APP-A of FIG. 2 and the second partition corresponds to APP-B of FIG. 2.
When the SOC end finds that a software upgrading data packet is stored in the peripheral (such as a U disk), a corresponding instruction is sent to the MCU.
Step 102: receiving the total frame number of a software upgrading data packet sent by the SOC end, and requesting the SOC end for the data packet according to the total frame number;
the SOC end firstly obtains the total frame number of a software upgrading data package, sends the total frame number to the MCU, the MCU makes a data package request to the SOC end according to the total frame number, and checks and detects the frame sequence number of the received data frame sent by the SOC end.
When a data packet request is carried out on the SOC terminal according to the total frame number, if communication interruption or abnormal power failure occurs, the MCU is restarted, when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is an initial mark, the MCU is controlled to run the software codes of the historical version of the first partition, and the SOC terminal is waited to initiate software upgrading again.
Step 103: when a data packet of the total frame number is received, caching a software upgrading data packet in a second partition of the APP area, and updating an upgrading state mark into a software upgrading mark;
step 104: when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark, copying a software upgrading data packet of a second partition of the APP area to a first partition of the APP area, and updating the upgrading state mark to an initial mark;
and in the process of copying the software upgrading data packet of the second partition to the first partition, if power failure occurs, when the MCU is detected to be powered on and restarted to enter the BOOT area and the upgrading state mark is the software updating mark, copying the software upgrading data packet of the second partition to the first partition.
Step 105: and controlling the MCU to enter a first partition of the APP area to run the upgraded software codes.
Based on the foregoing embodiments, an embodiment of the present application provides a dual-partition MCU software upgrading apparatus, which is applied to an MCU, and referring to fig. 4, the dual-partition MCU software upgrading apparatus 200 provided in the embodiment of the present application at least includes:
an upgrade initiation starting unit 201, configured to update the upgrade status flag of the Flash area to an upgrade initiation flag when an instruction that the SOC end reads the software upgrade data packet is received, and update the upgrade status flag to an initial flag when it is detected that the MCU enters the BOOT area and the upgrade status flag is the upgrade initiation flag;
a data packet request unit 202, configured to receive a total frame number of a software upgrade data packet sent by the SOC end, and perform a data packet request to the SOC end according to the total frame number;
the data packet caching unit 203 is configured to copy the software upgrade data packet of the second partition of the APP area to the first partition of the APP area and update the upgrade state flag to the initial flag when it is detected that the MCU restarts to enter the BOOT area and the upgrade state flag is the software update flag;
a data packet copying unit 204, configured to copy a software upgrade data packet of a second partition of the APP area to a first partition of the APP area when it is detected that the MCU restarts to enter the BOOT area and the upgrade state flag is a software update flag, and update the upgrade state flag to an initial flag;
and an upgrade running unit 205, configured to control the MCU to enter the first partition of the APP partition to run the upgraded software code.
In this embodiment, the apparatus further includes: the partition unit is used for partitioning the APP area into a first partition and a second partition, wherein the first partition is used for storing the software data packet, and the second partition is used for caching the software upgrading data packet.
In this embodiment, the apparatus further includes: and the data checking unit is used for checking the received data frame sent by the SOC end and detecting the frame serial number.
In this embodiment, when a packet request is made to the SOC side according to the total frame number, if a communication interruption or an abnormal power outage occurs, the apparatus further includes: and the first exception handling unit is used for controlling the MCU to run the software code of the historical version of the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrade state mark is the initial mark, and waiting for the SOC end to initiate software upgrade again.
In this embodiment, in the process of copying the software upgrade data package of the second partition to the first partition, if power failure occurs, the apparatus further includes: and the second exception handling unit is used for copying the software upgrading data packet of the second partition to the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is the software updating mark.
Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
Finally, it should be noted that: the above 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 or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A dual-partition MCU software upgrading method is characterized in that the method is applied to an MCU and comprises the following steps:
when an instruction that an SOC end reads a software upgrading data packet is received, updating an upgrading state mark of a Flash area to an upgrading initiation mark, and updating the upgrading state mark to an initial mark when the MCU is detected to enter a BOOT area and the upgrading state mark is the upgrading initiation mark;
receiving the total frame number of a software upgrading data packet sent by the SOC end, and requesting the SOC end for the data packet according to the total frame number;
when a data packet of the total frame number is received, caching a software upgrading data packet in a second partition of the APP area, and updating an upgrading state mark into a software upgrading mark;
when the MCU is detected to restart to enter the BOOT area and the upgrading state mark is a software updating mark, copying a software upgrading data packet of a second partition of the APP area to a first partition of the APP area, and updating the upgrading state mark to an initial mark;
and controlling the MCU to enter a first partition of the APP area to run the upgraded software codes.
2. The method of dual-partitioned MCU software upgrade according to claim 1, further comprising: the APP area is divided into a first partition and a second partition, the first partition is used for storing the software data packets, and the second partition is used for caching the software upgrading data packets.
3. The method of dual-partitioned MCU software upgrade according to claim 1, further comprising: and carrying out verification and frame sequence number detection on the received data frame sent by the SOC terminal.
4. The method for upgrading MCU software of a dual partition according to claim 3, wherein when a packet request is made to the SOC terminal according to the total frame number, if communication interruption or abnormal power interruption occurs, the method further comprises:
and when the MCU is detected to be restarted and enter the BOOT area and the upgrade state mark is an initial mark, controlling the MCU to run the software code of the historical version of the first partition, and waiting for the SOC end to initiate software upgrade again.
5. The method for upgrading MCU software of a dual partition according to claim 1, wherein in the process of copying the software upgrade data package of the second partition to the first partition, if a power failure occurs, the method further comprises:
and copying the software upgrading data packet of the second partition to the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark.
6. The utility model provides a MCU software upgrading device of two divisions, its characterized in that is applied to MCU, includes:
the upgrading initiating starting unit is used for updating the upgrading state mark of the Flash area to an upgrading initiating mark when an instruction that the SOC end reads the software upgrading data packet is received, and updating the upgrading state mark to an initial mark when the MCU is detected to enter the BOOT area and the upgrading state mark is the upgrading initiating mark;
the data packet request unit is used for receiving the total frame number of the software upgrading data packet sent by the SOC end and requesting the SOC end for the data packet according to the total frame number;
the data packet caching unit is used for copying a software upgrading data packet of a second partition of the APP area to a first partition of the APP area and updating the upgrading state mark into an initial mark when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is a software updating mark;
the data packet copying unit is used for copying the software upgrading data packet of the second partition of the APP area to the first partition of the APP area and updating the upgrading state mark into an initial mark when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is the software updating mark;
and the upgrading operation unit is used for controlling the MCU to enter the first partition of the APP area to operate the upgraded software codes.
7. A bi-partitioned MCU software upgrade device according to claim 6, characterized in that the device further comprises: the partition unit is used for partitioning the APP area into a first partition and a second partition, wherein the first partition is used for storing the software data packet, and the second partition is used for caching the software upgrading data packet.
8. The dual-partitioned MCU software upgrade apparatus according to claim 6, further comprising: and the data checking unit is used for checking the received data frame sent by the SOC end and detecting the frame sequence number.
9. The MCU software upgrading device of claim 8, wherein when a packet request is made to the SOC side according to the total frame number, if a communication interruption or abnormal power off occurs, the device further comprises: and the first exception handling unit is used for controlling the MCU to run the software code of the historical version of the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrade state mark is the initial mark, and waiting for the SOC end to initiate software upgrade again.
10. The MCU software upgrading apparatus of claim 6, wherein in the event of a power failure during the process of copying the software upgrading packet of the second partition to the first partition, the apparatus further comprises: and the second exception handling unit is used for copying the software upgrading data packet of the second partition to the first partition when the MCU is detected to be restarted and enter the BOOT area and the upgrading state mark is the software updating mark.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210347289.9A CN114546455A (en) | 2022-04-01 | 2022-04-01 | MCU software upgrading method and device for double partitions |
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| CN202210347289.9A CN114546455A (en) | 2022-04-01 | 2022-04-01 | MCU software upgrading method and device for double partitions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116909609A (en) * | 2023-09-12 | 2023-10-20 | 英纳法智联科技(北京)有限公司 | Software upgrading method and device of vehicle-mounted intelligent equipment and vehicle-mounted intelligent equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116909609A (en) * | 2023-09-12 | 2023-10-20 | 英纳法智联科技(北京)有限公司 | Software upgrading method and device of vehicle-mounted intelligent equipment and vehicle-mounted intelligent equipment |
| CN116909609B (en) * | 2023-09-12 | 2023-12-22 | 英纳法智联科技(北京)有限公司 | Software upgrading method and device of vehicle-mounted intelligent equipment and vehicle-mounted intelligent equipment |
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