Method for quick upgrading of software program of single-chip microcomputer in electronic system case

Abstract

The invention discloses a method for quick upgrading of a software program of a single-chip microcomputer in an electronic system case. The method is high in reliability and capable of achieving online upgrading of the single-chip microcomputer in an electronic system without case opening. According to the technical scheme, during serial asynchronous communication, upgrading software program data are stored in a sending buffer area in a packaged mode by an upper computer and sent to a lower computer in a framed mode by a serial communication module; after a lower computer receiving buffer area receives serial data frame information, a serial data receiving and processing module judges whether the serial data frame information received by the lower computer receiving buffer area are effective, real data frames are assigned to a cache array Ai through the receiving buffer area, 1 is added to a subscript variable Ni of the cache array Ai automatically, an array word string consistent with a communication frame protocol is stored in a cache array Bi, and the lower computer erases the region where programs are to be deposited in a lower computer single-chip microcomputer FLASH and then writes a software program data package into the region where programs are to be deposited in the FLASH.

Description

technical field [0001] The invention relates to a method for upgrading software of a single-chip microcomputer in an electronic system by adopting serial asynchronous communication. Background technique [0002] Single-chip microcomputer, also known as single-chip microcontroller, is equivalent to a miniature computer, which has the characteristics of small size, light weight, and high cost performance. Today, single-chip microcomputers are used in a wide range of fields, such as smart instruments, real-time industrial control, communication equipment, navigation systems, and household appliances. In the above-mentioned electronic system, the computer micro-control chip (single-chip microcomputer) between each component needs to exchange data and establish a communication link, and using serial communication means is one of the important and commonly used communication methods. The working mode of serial communication is divided into synchronous mode and asynchronous mode. ...

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Problems solved by technology

[0004] The purpose of the present invention is to aim at the single-chip microcomputer in the electronic system, to realize the method and device for online upgrade without opening the box, to solve the disadvantages of the existing single-chip microcomputer software program in the electronic system box that needs to be rewritten and upgraded out of the box, and to provide an intuitive and simple, The design process is short, the reliability is high, and the method of quickly upgrading the software program of the single-chip microcomputer in the electronic system case through the serial asynchronous communication interface does not need to open the case of the electronic system

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