Method for upgrading firmware of advertising machine terminal through USB (Universal Serial Bus) interface

Abstract

The invention relates to a method for upgrading a firmware of an advertising machine terminal through a USB (Universal Serial Bus) interface. The method comprises the following steps: (S01) connecting a USB flash disk to a PC (Personal Computer), uploading a firmware program to be upgraded to the USB flash disk through upper computer application software, and setting display parameters and an upgrading mark of the advertising machine terminal under the support of the upper computer application software; (S02) after the advertising machine terminal is electrified and started, judging the upgrading mark and upgrading the firmware program to be upgraded; and (S03) after the firmware program is successfully upgraded, automatically reloading a new firmware program by the system of the advertising machine terminal. The method is suitable for upgrading the firmware of big and small advertising machines in various places only by using one USB flash disk; moreover, the firmware can be divided into a plurality of sub areas and the sub areas can be correspondingly upgraded according to specific revised parts without upgrading the whole firmware program again every time; therefore, the upgrading speed is increased, and the error probability is reduced.

Description

technical field [0001] The invention relates to the technical field of firmware upgrading, in particular to a method for upgrading the firmware of an advertising machine terminal through a USB interface. Background technique [0002] The core of an embedded system is composed of one or several microprocessors or single-chip microcomputers pre-programmed to perform a few tasks. Unlike a general-purpose computer, which can run software chosen by the user, software on an embedded system is usually temporary and is often referred to as "firmware." However, as the content and services of embedded systems become more and more new and rich, customers have more and more needs for product functions, and sometimes they may need to further improve the performance of the system, so firmware upgrades have also become More and more frequent and heavier. [0003] During production in the factory, the firmware program is generally written into the flash chip by a burning machine. If the f...

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Problems solved by technology

[0004] Embedded systems generally have a boot program, and firmware upgrades can also be performed in the boot program. Input the download command at the debugging serial port, and download the upgraded file to the RAM of the target board through the serial port line, twisted pair line, and USB connection line. Then enter the burning command to burn the content in RAM to flash, but this method is cumbersome and not suitable for production line employees and dispatched technical support personnel, and generally needs to be completed by developers

[0005] Some embedded systems have relatively complete bootloader functions. It is necessary to connect the target board to the PC through a USB cable or twisted pair, and cooperate with the download software on the PC to complete the automatic upgrade, but this method cannot visually see the upgrade program. progress, and is suitable for some small, portable embedded devices, it becomes very inconvenient for some outdoor, large, fixed embedded devices

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