Method for updating and upgrading Bootloader software by automobile ECU (Electronic Control Unit) controller

Abstract

The invention discloses a method for updating and upgrading Bootloader software of an automobile ECU controller. The method comprises the following steps: dividing MCU memory area space; making a BootRom software program; manufacturing a Bootloader APP (Application) updater program; burning the MIX flashing file into the ECU controller before the ECU shell is sealed with the glue; reading softwareverification information; flashing the manufactured Bootloader APP (Application) updater program into an APP area of the application program; when the ECU program of the controller runs in the Bootloader APP, the work of updating the Bootloader program can be carried out. According to the method for rapidly achieving self-updating and upgrading based on the existing Bootloader program, the safety, high efficiency and reliability in the flashing and updating process can be achieved, and time and cost are saved.

Description

technical field [0001] The invention relates to the technical field of an automobile ECU controller, in particular to a method for updating and upgrading Bootloader software of an automobile ECU controller. Background technique [0002] With the improvement of the electronic level of automobiles, there will inevitably be loopholes in automotive ECU applications. The larger the code size, the more loopholes. There are generally two methods for software bug fixes and software function upgrades. In the early stage of ECU software development, application updates It must be completed with a dedicated burning tool. The dedicated programmer is directly connected to the program debugging pin of the MCU to complete the programming of the program. The product ECU in the later stage of development will no longer provide program debugging ports (such as BDM, JTAG, serial ports, etc.). Implement program updates. Generally, the update of the ECU application software code is realized b...

AI Technical Summary

Problems solved by technology

In the development of the Bootloader itself, it is necessary to meet the update and upgrade of the APP software and also meet the refresh diagnosis specifications of the host factory. The development cycle is long, and it is inevitable that there are loopholes in the early Bootloader function. Therefore, it is necessary to consider the function of updating and upgrading the Bootloader itself.

In addition, in the past, during the bootloader self-update process, there was a risk of the controller being bricked due to an unexpected power failure of the controller.

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