MCU software upgrading method and system of vehicle-mounted multimedia device, and storage device

Abstract

The invention discloses an MCU software upgrading method and an MCU software upgrading system of a vehicle-mounted multimedia device, and a storage device. The MCU software upgrading method comprisesthe steps of: acquiring a version number of current MCU software of the vehicle-mounted multimedia device, and detecting a version number of latest MCU software provided by a network server when the vehicle-mounted multimedia device is accessed to a network; judging whether to upgrade the MCU software according to the version number of the current MCU software and the version number of the latestMCU software, and if so, outputting upgrade prompting information; receiving and saving latest MCU software data transmitted by a network server when detecting an upgrading instruction input by a user; and calling an upgrading interface after the receiving and saving of the latest MCU software data are completed, verifying the latest MCU software data according to a preset verification rule and then writing the latest MCU software data into a storage of an MCU by means of the upgrading interface. The MCU software upgrading method and the MCU software upgrading system can push the latest version of MCU software to the vehicle-mounted multimedia device by means of the network server, realize remote upgrading of the MCU software by means of the network, and improve the convenience and security of MCU software upgrading.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted multimedia, in particular to an MCU software upgrading method, system and storage device of vehicle-mounted multimedia equipment. Background technique [0002] Car multimedia systems generally have two controllers, one MCU for logic control, and one ARM to run the operating system. The upgrade of the operating system is relatively convenient. For example, the Arnold system has a complete upgrade method, but the upgrade of the MCU is relatively troublesome. The MCU software needs to go to a 4S store or download it to an SD card to be upgraded by the user. Going to the 4S store is troublesome and increases the burden on the user. However, due to the large number of software versions, the MCU software is easily upgraded by the user. [0003] Thereby prior art still needs to improve and improve. Contents of the invention [0004] In view of the above-mentioned deficiencies in the prior art,...

AI Technical Summary

Problems solved by technology

[0002] Car multimedia systems generally have two controllers, one MCU for logic control, and one ARM to run the operating system. The upgrade of the operating system is relatively convenient. For example, the Arnold system has a complete upgrade method, but the upgrade of the MCU is relatively troublesome. The MCU software needs to go to the 4S store or download it to the SD card for the user to upgrade. Going to the 4S store is troublesome and increases the burden on the user. However, upgrading by the user is easy to cause upgrade errors due to the large number of software versions.

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