ZHCUAU3J January 2018 – March 2024
#include <file.h>
#include <stdio.h>
/****************************************************************************/
/* 用户定义的器件驱动程序的声明 */
/****************************************************************************/
extern int MYDEVICE_open(const char *path, unsigned flags, int fno);
extern int MYDEVICE_close(int fno);
extern int MYDEVICE_read(int fno, char *buffer, unsigned count);
extern int MYDEVICE_write(int fno, const char *buffer, unsigned count);
extern off_t MYDEVICE_lseek(int fno, off_t offset, int origin);
extern int MYDEVICE_unlink(const char *path);
extern int MYDEVICE_rename(const char *old_name, char *new_name);
main()
{
FILE *fid;
add_device("mydevice", _MSA, MYDEVICE_open, MYDEVICE_close, MYDEVICE_read,
MYDEVICE_write, MYDEVICE_lseek, MYDEVICE_unlink, MYDEVICE_rename);
fid = fopen("mydevice:test","w");
fprintf(fid,"Hello, world\n");
fclose(fid);
}