Research of DSP file system based on CF card

Abstract

The capacity of Flash on-board is generally small, the data will be lost after SDRAM power-down, and they can not easily transfer the data to a computer. In order to meet with large-capacity storage needs in the image processing system, this paper uses CF card as removable storage media. It mainly introduces the working principle of CF (Compact Flash) cards and the principle of FAT16 file system, achieves the hardware and software design of the DSP and the CF card interface circuit, compile underlying drive of the CF card and FAT16 file system.