#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 () */
 
#if 0
int
_fstat (int          file,
        struct stat *st)
{
  st->st_mode = S_IFCHR;
  return  0;
 
}       /* _fstat () */
#endif
 
int
_lseek (int   file,
        int   offset,
        int   whence)
{
  return  0;
 
}       /* _lseek () */
 
int
isatty (int   file)
{
  return  1;
 
}       /* _isatty () */


void stdio_drain(void)
{
usart1_drain();
}