serial port type NAND FLASH data zero clearing processing method and a serial port type NAND FLASH data zero clearing processing system

Abstract

The embodiment of the invention discloses a serial port type NAND FLASH data zero clearing processing method and system, and the method comprises the steps: reading the data information of a target sub-block in at least one pre-divided storage region when the system is detected to be started and in a production mode; If the target byte information in the target sub-block data information is the same as preset byte information, performing zero clearing processing on all blocks in a storage area where the target sub-block is located; Wherein the at least one storage area comprises at least one sub-block. The technical scheme of the embodiment of the invention is adopted. In the prior art, a serial port type FLASH enters a production test; According to the technical scheme of the invention, the technical problems of complexity and complexity in zero clearing of the memory due to the fact that a corresponding production and measurement tool needs to be imported are solved, whether data isstored in each block of the memory or not is automatically detected, zero clearing processing is automatically carried out if the data exists, the efficiency of zero clearing processing is improved, and the technical effect of software system crash is avoided.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of memory, and in particular to a method, system, device, and storage medium for serial port type NAND FLASH data clearing and processing. Background technique [0002] The software programming process is actually the process of discharging the memory cells, so for the memory blocks without data, the memory cells are not operated, so the value of these partitions is still 1, that is, FF. [0003] Such a design is very inconvenient for software development. For software, 1 is an effective value. We usually default the initial value of the data structure to 0 instead of 1. Especially for new software that has just been burned, if the data of these blocks is not reset before use before production testing, it will not only lead to data errors in the data block, but may even cause serious problems such as array out-of-bounds and system crashes! In order to avoid these problems, all prog...

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Problems solved by technology

[0003] Such a design is very inconvenient for software development. For software, 1 is an effective value. We usually default the initial value of the data structure to 0 instead of 1.

Especially for new software that has just been burned, if the data of these blocks is not reset before use before production testing, it will not only lead to data errors in the data block, but may even cause serious problems such as array out-of-bounds and system crashes! In order to avoid these problems, all burned memory flash must first clear these blocks before use

[0004] In the prior art, when performing production testing on the serial port NAND FLASH chip after burning, it is necessary to add the reset command provided by the solution provider. Although this operation is feasible, it is very easy for those machines that do not follow the standard production process, such as the development of prototypes. The operation of ignoring the data clearing will cause the software system to crash and cannot be started normally. It can only be upgraded through the boot system. For the complete machine and prototype, it is not only troublesome to operate, but also to upgrade the software by removing the cover and welding the serial port or removing the flash chip to re-program. It may damage the appearance of the machine; if the programmed memory is cleared manually, it is easy to be negligent in operation and cause the software system to crash

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