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Data access method of embedded system and computer readable storage medium

An embedded system, data access technology, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as rising hardware costs, and achieve the effects of improving reliability, ensuring effectiveness, and reducing production costs

Active Publication Date: 2019-06-07
上海仰歌电子科技有限公司
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Problems solved by technology

However, the corresponding hardware cost of such systems will increase

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  • Data access method of embedded system and computer readable storage medium
  • Data access method of embedded system and computer readable storage medium
  • Data access method of embedded system and computer readable storage medium

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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] In order for those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.

[0021] It should be noted that the terms "first", "second...

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Abstract

The invention provides a data access method of an embedded system, which comprises the following steps of: S1: a file system executing a data storage task by a file system in a target storage medium,wherein the data storage task comprises the steps of: obtaining the data length of target data, determining a write sequence number, and carrying out check calculation on the target data to define a target data identity and form key data; S2, according to a first access rule, respectively writing the key data into first and second file data of a target storage medium; S3, executing a data readingtask in a target storage medium by the file system, wherein the data reading task comprises legality check and check calculation on key data in the first file data and the second file data in sequence; and S4, reading one of the first file data and the second file data according to the second access rule, so that the reliability of the embedded system is improved under the condition of not increasing an additional storage medium.

Description

technical field [0001] The invention relates to a data access technology of an embedded system, in particular to a data access method and an embedded system designed to prevent accidental power-off from damaging data in the system in an environment where a traditional file system is used. computer readable storage medium. Background technique [0002] During the application process of the embedded system, accidents such as sudden power failure will inevitably occur, which will cause damage to the current read and write data in the system. In this way, an additional storage medium is added to back up relevant system data, so as to realize the backup and recovery of the system. But correspondingly, the hardware cost of such systems will rise. Contents of the invention [0003] The main purpose of the present invention is to provide a data access method and a computer-readable storage medium for an embedded system, so as to ensure the validity of the target data after the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/172
Inventor 聂咸彧
Owner 上海仰歌电子科技有限公司
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