A method of improving flash erasing and writing life

Abstract

The invention relates to a method for improving the erasing and writing life of Flash. The purpose is to provide a method capable of improving the erasing and writing life of the Flash medium. Solution: Divide each Flash sector into 128 sub-blocks, establish corresponding bit offset addressing information and erasing times information according to the current reading and writing status of each sub-block, and store the bit offset addressing information and erasing times information in any sub-block, and update it in real time; bit offset addressing information occupies 16 bytes, each byte is 8 bits, and each bit corresponds to the state of a sub-block of the current Flash sector; read / Obtain the bit offset addressing information and erasure times information in the current state during the write operation, and read / write each sub-block according to the bit offset addressing information; the read / write rule is, for data that has been written but not The erased sub-block is no longer written; for the sub-block that has not been written or has not been written after erasing, the read operation is not performed. Inventions are mainly used in smart electronics.

Description

technical field [0001] The patent of the present invention relates to a method for improving the lifespan of flash erasing and writing, which is mainly used in smart electronic products, mobile Internet devices, mobile Internet of Things devices, and smart grid devices. Background technique [0002] In Internet of Things devices, smart grid devices, and smart electronic products, it is often necessary to save data frequently, quickly, and reliably. The current solution is to write software to different addresses of Flash to complete data storage. [0003] To store information in Flash, due to the "erase and write" feature of Flash, to save the same variable (such as voltage, motor speed, etc.) frequently and quickly, you must first erase and then write to different addresses of Flash Finish. Because the storage address of the same variable always changes, it brings troubles, and the read and write operations of the application software have high complexity, low reliability,...

AI Technical Summary

Problems solved by technology

Because the storage address of the same variable is always changing, it brings troubles, and the read and write operations of application software have high complexity, low reliability, and poor maintainability

This will sharply increase software complexity, make software development difficult, and reduce product reliability.

Moreover, such software has poor portability, often causes duplication of labor, high coupling, and maintenance is also a problem

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