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UDS protocol upgrading method based on I2C

A protocol and communication scheme technology, applied in the field of UDS protocol upgrade based on I2C, can solve the problems of low information security, poor portability, non-standard communication protocol, etc., and achieve the effect of strong expansion redundancy and high coupling

Pending Publication Date: 2022-01-28
英博超算(南京)科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An I2C-based UDS protocol upgrade method proposed by the present invention solves the problem that the existing I2C custom protocol upgrade method has low information security when used, and the communication between data is not a standard interface, and the portability is poor. Standard communication protocol, the data is not a service-oriented platform, and the expansion redundancy is poor. We propose an I2C-based UDS protocol upgrade method

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  • UDS protocol upgrading method based on I2C
  • UDS protocol upgrading method based on I2C
  • UDS protocol upgrading method based on I2C

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0044] refer to Figure 1-Figure 3 Shown, a kind of UDS protocol upgrade method based on I2C, described UDS protocol upgrade method based on I2C adopts the UDS communication scheme based on I2C, described UDS protocol upgrade method based on I2C is as follows:

[0045] After the MCU is powered on, the program enters the Boot from the RESET entry defined in the link file. After the Boot completes the basic initialization, it will check the software refresh flag and the App valid flag. If it is valid, it will stay in Boot and wait for the software refresh. Write the task, if it is invalid, jump to the entry address of the App and start the App.

[0046] There are usua...

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Abstract

The invention discloses a UDS protocol upgrading method based on I2C, and relates to the field of automobiles. The invention aims to solve the problems that when an existing I2C custom protocol upgrading method is used, information security is not high, communication between data is not a standard interface, portability is poor, a standard communication protocol is not used, data is not a service-oriented platform, and expansion redundancy is poor. According to a technical scheme in the invention, the UDS protocol upgrading method based on the I2C comprises the following steps that after an MCU is powered on, a program enters Boot from a RESET entry defined in a link file; after basic initialization is completed on the Boot, a software refreshing flag bit and an App effective flag bit are checked; and if the flag bits are effective, the program stays in the Boot to wait for executing a software flashing task, or if the flag bits are invalid, the program jumps to an entry address of an App, and the App is started. According to the invention, information security is relatively high, communication among data is realized through a standard interface, the protocol of the same platform is seamlessly transplanted, and expansion redundancy is strong.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to an I2C-based UDS protocol upgrading method. Background technique [0002] With the continuous development of automobiles, the electronic and electrical architecture of the vehicle has undergone earth-shaking changes, gradually transitioning from the past distributed architecture to the domain controller-based architecture. With the emergence of smart cockpit domain controllers, usually the domain controller is processed by a black box, and the display part needs to be processed by a separate ECU, and they are connected through the LVDS interface. upgrade. [0003] The custom protocol upgrade method for existing I2C is not high in information security when used, the communication between data is not a standard interface, the portability is poor, it is not a standard communication protocol, the data is not a service-oriented platform, and the expansion redundancy is poor problem, we pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/65G06F8/71
CPCG06F8/65G06F8/71
Inventor 傅乃云雷海军田锋
Owner 英博超算(南京)科技有限公司