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ECU firmware update method based on bootloader self-update

A firmware update and self-update technology, applied in software engineering design, instruments, electrical digital data processing, etc., can solve problems such as the existence of loopholes and incomplete consideration that cannot be completely eliminated, so as to achieve efficient and reliable program programming, ensure security, and save money. The effect of time and cost

Active Publication Date: 2017-12-05
TONGJI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existence of loopholes and the possibility of incomplete consideration cannot be completely eliminated

Method used

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  • ECU firmware update method based on bootloader self-update
  • ECU firmware update method based on bootloader self-update
  • ECU firmware update method based on bootloader self-update

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0037] Such as figure 1 Shown, a kind of ECU firmware update method based on Bootloader self-update, comprises the following steps:

[0038] Step S1: if figure 2 As shown, run the Bootloader program and divide the storage space of the ECU system into a user data storage area and a program storage area. The user data storage area (Data Flash) includes the version information area and the tag area, and the version information area includes the Bootloader version information and application programs. Version information, the tag area includes update request tags, application validity ...

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Abstract

The invention relates to a method for updating ECU firmware based on Bootloader self-update, comprising: step S1: dividing the storage space of the ECU system; step S2: judging whether the ECU system receives an application program update request or a Bootloader update request, if it is an application program update request , execute step S3, if it is a Bootloader update request, execute step S4; step S3: update the code in the application program code area by incremental update, execute step S5; step S4: the Bootloader program performs integral self-updating of the code in the Bootloader area, Execute step S5; step S5: rewrite the corresponding version information in the version information area, and reset the ECU system. Compared with the prior art, the present invention has the advantages of saving time and cost, ensuring the safety of the Bootloader, and more efficient and reliable programming process.

Description

technical field [0001] The invention relates to a firmware update method, in particular to an ECU firmware update method based on Bootloader self-update. Background technique [0002] In the automotive electronic control unit (ECU), there is no need to load the operating system kernel. The bootloader (Bootloader) is a program used to complete the embedded system startup and system software loading work. The main work is to update the application program code, that is, Update online. [0003] Generally, the programming of ECU is carried out, and the overall update method is often adopted, firstly, the entire storage space is erased, and then the entire new program is programmed into the target ECU. But sometimes, the ECU software version has not changed much before and after. If the overall update method is still adopted, the update efficiency will be low, and the memory consumption occupied by the update will be large. [0004] At the same time, when designing the Bootload...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/445
CPCG06F8/654
Inventor 张戟廖治谢朋甫朱翔宇彭勇陈启鹏
Owner TONGJI UNIV