Embedded system on-line program refreshing method

Abstract

The invention discloses an embedded system on-line program refreshing method. The method includes the steps: placing a starting program, an application program and effective markers into a racetrack memory of an embedded system; firstly executing the starting program after the embedded system resets, reading values of the effective markers by the starting program, judging whether a current application program is effective or not, entering and continuously running the application program if the application program is effective, entering a refreshing state and establishing communication with an external device if not, and downloading refreshing subprograms from the external device; storing the downloaded refreshing subprograms into the racetrack memory, downloading application programs needing to be refreshed from the external device after the subprograms are downloaded, circularly calling and refreshing the subprograms, and flushing data of each downloaded application program needing to be refreshed into a designated address of the racetrack memory. By the method, software of the embedded system can be updated in an online refreshing manner, a software program is improved, and excessive product cost increase is avoided.

Description

technical field [0001] The invention relates to the program update of the embedded system, in particular to a method for updating the program of the embedded system online. Background technique [0002] The current embedded systems, especially some embedded control systems with more complex functions, after the product development is completed and introduced to the market, due to the complexity of the system, it is often found that the original program has defects, or when adding new functions, manufacturers need to Upgrade existing programs. [0003] It is time-consuming, laborious and expensive to recall or replace embedded products that have already entered the market, or send professional engineers to refresh the sold products with professional refresh tools. [0004] In view of the above problems, it is a problem to be solved in the prior art to provide a new method to facilitate manufacturers to update and upgrade the software of the embedded systems that have been sh...

AI Technical Summary

Problems solved by technology

[0002] The current embedded systems, especially some embedded control systems with more complex functions, after the product development is completed and introduced to the market, due to the complexity of the system, it is often found that the original program is defective, or when adding new functions, the manufacturer needs to Upgrade existing programs

[0003] To recall or replace embedded products that have entered the market, or send professional engineers to refresh the sold products with professional refresh tools, this method is time-consuming, laborious and expensive

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