Method for Quickly Upgrading the Software Program of Single-chip Microcomputer in Electronic System Chassis

Abstract

The invention discloses a method for quickly upgrading the software program of a single-chip microcomputer in an electronic system case, aiming at providing a method with high reliability and capable of realizing online upgrading of the single-chip microcomputer in the electronic system without opening the box. The present invention is realized through the following technical solutions: in serial asynchronous communication, the upper computer packs and stores the upgraded software program data into the sending buffer, and sends them to the lower computer in frames through the serial port communication module; After the data frame information, the serial port data receiving processing module judges whether the serial port data frame information in the receiving buffer of the lower computer is valid, and assigns the true data frame to the buffer array Ai through the receiving buffer, and the subscript variable Ni of the buffer array Ai is incremented by 1, Store the array string consistent with the communication frame protocol into the buffer array Bi, the lower computer erases the program storage area in the lower computer microcontroller FLASH, and then writes the software program data packet into the program storage area 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. The use of 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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