u盘c51读写（C51 disk read and write）.docVIP

u盘c51读写（C51 disk read and write） U disk read and write the C51 sample source program CH375 U disk read and write the C51 sample source program I nclude datatype.h I nclude console.h I nclude 44b0x.h I, nclude, string.h * the following detailed description of the definition of the look at the CH375HF9.H file. Copy #define LIB_CFG_FILE_IO 1 / * file read and write data, 0 , 1 subroutine internal copy. #define LIB_CFG_INT_EN 1 / * CH375 INT# pin connection, S3C44B0X external interrupt 2 pin . * MCU RAM limited, which CH375 subroutine with 512 bytes, the remaining part RAM can be used for file read and write buffer. File #define data buffer FILE_DATA_BUF_LEN 0x2000 / * RAM outside, the length of the buffer is not less than one time to read and write data length. I nclude CH375HF9.H #define CH375Cmd * (volatile * U8) (0x4000001) / * * / bus #define CH375Dat * (volatile, U8 *) (0x4000000) Extern U32 MCLK; The host file system interface CH375 / * * / Support: FAT12/FAT16/FAT32 / * * / / * ARM singlechip C language U disk file read and write sample program. The program will / U disk /C51/CH375HFT.C file lowercase letters to uppercase letters, write new files in NEWFILE.TXT, If you cannot find the original file CH375HFT.C, the program displays all the filenames that start with C51 in the CH375 subdirectory, and creates a new NEWFILE.TXT File and write prompt information, If the C51 subdirectory is not found, the program displays all filenames under the root directory and creates a new NEWFILE.TXT File and write prompt information * / CH375 / INT# pin by query processing, data replication for internal copy, this procedure applies to S3C44B0X microcontroller, serial port 0 The output of the monitoring information, 57600bps. ENDIAN = little / * * / Void mDelay1_2uS (1.2uS) / * at least delay, based on single-chip frequency adjustment. { UINT32 i; For (I = 30; I = = 0; I -); } Void __irq CH375Interrupt (void) / CH375 interrupt service program, by CH375 INT# of the low level or f