Method for applying Yaffs file system to NorFlash

Abstract

The invention discloses a method for applying a Yaffs file system to NorFlash. The method includes the following steps: (1) each block in the NorFlash is divided into a plurality of pages; (2) an underlying data random reading program, an underlying data random writing program and an underlying data block-based erasure interface program of the NorFlash are written out through programming languages according to a storage equipment data sheet of the NorFlash; (3) the programs are packaged on an underlying data interface according to the size of a data field and the size of the blocks; (4) a structure body of the Yaffs file system is filled with parameters such as the size of the data field, the size of the blocks, a data page-based reading interface, a data page-based writing interface and a block-based erasure interface of the pages in the NorFlash. By means of the method, the Yaffs file system which cannot be easily disturbed by factors such as static electricity, frequent electrification and frequent electricity breaking can be applied to NorFlash storage equipment.

Description

technical field [0001] The invention relates to a file system that can be applied to a NorFlash storage device, in particular to an application method of a Yaffs file system in the NorFlash. Background technique [0002] VxWorks operating system equipped with NorFlash storage device is a common product development solution. The most widely used in the existing VxWorks kernel is the dosFS file system. However, in the actual operation of the product, because the dosFS file system itself is relatively fragile, it is easily affected by factors such as static electricity interference and frequent power-on and off, which will cause the file information table of the dosFS file system of VxWorks to be damaged, resulting in damage to the entire dosFS file system. The file is lost, which in turn affects the normal operation of the VxWorks operating system. Therefore, based on the above reasons, there is an urgent need for an application method of a Yaffs file system in NorFlash, whi...

AI Technical Summary

Problems solved by technology

However, in the actual operation of the product, because the dosFS file system itself is relatively fragile, it is easily affected by factors such as static electricity interference and frequent power-on and off, which will cause the file information table of the dosFS file system of VxWorks to be damaged, resulting in damage to the entire dosFS file system. The file is lost, which affects the normal operation of the VxWorks operating system