#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 = usart2_write (buf, nbytes, 1);
  cdcacm_write (buf, nbytes, 0);

  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)
{
  usart2_drain();
}