Method and system for recovering single-chip microcomputer software error

Abstract

The invention relates to the technical field of single-chip microcomputers, and discloses a method and system for recovering a single-chip microcomputer software error. The method comprises the following specific steps: backing up a main program in single-chip microcomputer software, obtaining a plurality of software backups of the main program, and sorting the plurality of software backups; conserving the plurality of software backups in a storage space of the single-chip microcomputer program ; when the single-chip microcomputer software is in error, verifying the plurality of software backups of the single-chip microcomputer software and acquiring a verification result; according to the verification result, conserving a backup serial number of the software backup passing the verification into a memory space; and guiding the single-chip microcomputer software to skip to a certain software backup passing the verification according to the backup serial number, and realizing the recovery of the single-chip microcomputer software error. According to the method and system for recovering the single-chip microcomputer software error provided by the invention, by setting multiple software backups in a single-chip microcomputer program area and performing a selective guide in a plurality of software backups when the software error occurs, the single-chip microcomputer software error recovery capacity can be improved.

Description

technical field [0001] The invention relates to the technical field of single-chip microcomputers, in particular to a method and system for recovering software errors of single-chip microcomputers. Background technique [0002] In the application scenario of the single-chip microcomputer with harsh environment, the software stored in the program area of ​​the single-chip microcomputer often produces unrecoverable errors due to the influence of the external harsh environment (such as high temperature, radiation), and such software errors cannot be recovered by re-powering the single-chip microcomputer . Regardless of whether the single-chip software is stored in EPROM memory, EEPROM memory, or FLASH memory, there may be unrecoverable errors in one or some program bits, resulting in permanent malfunction or failure of the entire software. [0003] In order to deal with unrecoverable errors in the single-chip software, the existing solution is to perform triple-mode redundant ...

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Problems solved by technology

[0004] Although the software backup method of triple-mode redundancy can greatly improve the ability of the program memory to resist unrecoverable errors, this method needs to add an additional program memory and a majority of decision devices outside the microcontroller, resulting in a complex circuit system and a large area of ​​the circuit board. , making the system cost increase

In addition, the external program memory needs to occupy the IO port of the single-chip microcomputer, which limits the IO expansion performance of the single-chip microcomputer

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