Control method for peripheral device during ECU application layer software updating and storage medium

Abstract

The invention provides a control method for a peripheral device during ECU application layer software updating and a storage medium, and the method comprises the steps: controlling all hardware interfaces through a Boot loader when the application layer software is in an updating state, wherein the Boot loader reads the previous priority control parameter and verifies the previous priority control parameter, and when the previous priority control parameter passes the verification, the hardware interface of the Boot loader controls the peripheral device to operate according to the corresponding control parameter; and when the verification is not passed, reading and verifying the next priority control parameter, and when the verification is passed, controlling the peripheral device to operate according to the control parameter corresponding to the peripheral device by the Boot loader through the hardware interface by using the next priority control parameter. According to the method, on the premise that the universality of bottom software is guaranteed, the control method for the peripheral device after the application layer software is erased during updating is achieved, and the device can work under the required working conditions of low consumption, shutdown and the like.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle control, in particular to a control method and a storage medium for peripheral devices when ECU application layer software is updated. Background technique [0002] With the promotion of OTA technology, the multi-ECU application layer software of the vehicle will be packaged together for OTA upgrade, which takes a long time. During the OTA process, the vehicle’s low-voltage lead-acid battery is used for power supply. The capacity of the lead-acid battery is small, and the power consumption during the upgrade needs to be controlled. And try to be as low as possible, otherwise the lead-acid battery feed will easily fail to upgrade, resulting in vehicle failure. [0003] The peripheral devices controlled by each controller of the new energy vehicle are divided into high-level, low-level control, PWM duty cycle control and other methods. When updating the application layer software, the sof...

AI Technical Summary

Problems solved by technology

[0002] With the promotion of OTA technology, the multi-ECU application layer software of the vehicle will be packaged together for OTA upgrade, which takes a long time. During the OTA process, the vehicle’s low-voltage lead-acid battery is used for power supply. The capacity of the lead-acid battery is small, and the power consumption during the upgrade needs to be controlled. And try to be as low as possible, otherwise the lead-acid battery feed will easily fail to upgrade, resulting in vehicle failure

[0003] The peripheral devices controlled by each controller of the new energy vehicle are divided into high-level, low-level control, PWM duty cycle control and other methods. When updating the application layer software, the software will be erased first and then written into the new software. There is no application layer software control in the process. The level of the device pin will grow high or low, some peripheral devices such as cooling fans, water pumps, and level-type devices may have a level enable that causes high-speed constant rotation, and PWM-type devices will have a duty cycle of 0 or 100%. High-speed constant rotation, low-voltage energy consumption is very high at this time

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