A read-write protection method for stored data

Abstract

The invention discloses a storage data reading and writing protection method. The method comprises setting unlocking constants, locking constants and unlocking / locking variables, setting the initial value of the unlocking constants as the locking constants; creating an unlocking interface, and assigning the unlocking constants to the unlocking / locking constants in a high-to-low bit-by-bit mode; receiving a program command for reading / writing storage data and calling the unlocking interface; determining whether the unlocking / locking variables are equal to the unlocking constants, if so, calling the reading and writing interface of the storage data and executing the operation of storage data reading and writing, and if not, inhibiting the storage data reading and writing. The storage data reading and writing protection method can avoid rewriting data inside a storage device due to program running disorder during power interruption.

Description

technical field [0001] The invention relates to the field of data storage, in particular to a read-write protection method for stored data. Background technique [0002] In electronic devices such as 2.4G / 5G Bluetooth, the paired ID and some configuration information will be stored in storage devices such as EEPROM and FLASH, so that users do not need to re-enter pairing or other configuration information when using the device later. [0003] In the similar peripheral products currently on the market, the relevant configuration information is stored in the rewritable storage unit inside the product chip or in the rewritable memory outside the chip. However, when the device is powered off, the product chip often appears The reset circuit of the chip failed to reset immediately, resulting in disordered program operation during the short period of power-off of the chip, which in turn led to rewriting or destroying the data in the storage unit, and such data damage cannot be rec...

AI Technical Summary

Problems solved by technology

[0003] In the similar peripheral products currently on the market, the relevant configuration information is stored in the rewritable storage unit inside the product chip or in the rewritable memory outside the chip. However, when the device is powered off, the product chip often appears The reset circuit of the chip failed to reset immediately, resulting in disordered program operation during the short period of power-off of the chip, which in turn led to rewriting or destroying the data in the storage unit, and such data damage cannot be recovered, and may cause serious damage to the user. Causes a huge negative impact, making users think that the product quality is poor, and returns and exchanges occur frequently

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