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A new master-slave flash boot loader software upgrade method applied to a combination instrument

A combination meter and software upgrade technology, applied in software engineering design, instrumentation, calculation and other directions, can solve the problems of flashbootloader unable to achieve upgrade, low upgrade efficiency, and high upgrade cost, to improve convenience, reduce upgrade cost, and reduce operation. The effect of complexity

Active Publication Date: 2022-01-07
YANFENG VISTEON ELECTRONICS TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of this upgrade method uses the CAN communication protocol, and the flash boot loader itself cannot be upgraded. In addition, as a slave device, it always depends on the host computer tool, so the upgrade efficiency is not high, and the upgrade speed is slow and the upgrade cost is high.

Method used

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  • A new master-slave flash boot loader software upgrade method applied to a combination instrument
  • A new master-slave flash boot loader software upgrade method applied to a combination instrument
  • A new master-slave flash boot loader software upgrade method applied to a combination instrument

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Embodiment Construction

[0019] In order to deepen the understanding and recognition of the present invention, the present invention will be further described and introduced below in conjunction with the accompanying drawings.

[0020] Such as Figure 1-3 As shown, a new master-slave flash boot loader software upgrade method applied to the instrument cluster, the method includes two flash boot loader programs: Boot loader 1 and Boot loader 2, Code Flash area division of the automotive instrument cluster microcontroller It is Boot loader 1 partition, Boot loader 2 partition and Applications partition, wherein, described Boot loader 1 and Boot loader 2 all adopt master-slave device mode, can work in master device mode, also can work in slave device mode, so The automotive instrument cluster microcontroller described above can send upgrade data to Boot loader 2 / Boot loader 1 working in slave mode and the automotive instrument cluster in the state to be upgraded through Boot loader 1 / Boot loader 2 working...

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Abstract

The invention relates to a novel master-slave flash boot loader software upgrading method applied to a combination instrument, comprising two flash boot loader programs: Boot loader 1 and Boot loader 2, and the Code Flash area of ​​the instrument microcontroller is divided into Boot loader 1 Partition, Boot loader 2 partition and Applications partition, after the instrument microcontroller is powered on, start any one of Boot loader 1 and Boot loader 2, check whether you receive a request to upgrade the flash boot loader program or Applications program, if you receive an upgrade flash For the request of the boot loader program, check whether it is running in Boot loader 1, if so, upgrade Boot loader 2, otherwise upgrade Boot loader 1; if a request to upgrade the Applications program is received, execute the Applications program upgrade, and after the program upgrade is completed Exit the upgrade, and the microcontroller executes the Application program normally. Through this method, the flash boot loader program itself can be upgraded while using the flash boot loader program to upgrade other resource programs.

Description

technical field [0001] The invention relates to the technical field of automobile electronics, in particular to a software upgrading method for automobile combination instrument products, in particular to a novel master-slave flash boot loader software upgrading method applied to the combination instrument. Background technique [0002] With the development of technology, more and more various display panels are used as instruments in vehicles. When the display panel is used as an instrument, it has rich functions, various interfaces, various themes, and better user experience, and the manufacturer can also modify the instrument system file. Upgrade to meet various new needs of customers. [0003] Boot Loader, also known as boot loader, is a piece of software code that runs before the application program after the system is powered on / reset. At present, the software upgrade of most instruments still relies on the flash boot loader program to download the relevant applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F8/654
CPCG06F8/654
Inventor 刘昌元黄雷陈元珩
Owner YANFENG VISTEON ELECTRONICS TECH NANJING