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#include "project.h"
int
_open (const char *name,
int flags,
int mode)
{
errno = ENOSYS;
return -1; /* Always fails */
} /* _open () */
int
_close (int file)
{
errno = EBADF;
return -1; /* Always fails */
} /* _close () */
int
_write (int file,
char *buf,
int nbytes)
{
int ret;
ret = usart1_write (buf, nbytes, 1);
if (ret < 0) {
errno = -ret;
return -1;
}
return ret;
} /* _write () */
int
_read (int file,
char *buf,
int nbytes)
{
errno = -EAGAIN;
return -1; /* EOF */
} /* _read () */
int
_fstat (int file,
struct stat *st)
{
st->st_mode = S_IFCHR;
return 0;
} /* _fstat () */
int
_lseek (int file,
int offset,
int whence)
{
return 0;
} /* _lseek () */
int
isatty (int file)
{
return 1;
} /* _isatty () */
void stdio_drain (void)
{
usart1_drain();
}
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