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/* sys/sio.h -- Utility methods to read/write the SIO

   Copyright 2000 Free Software Foundation, Inc.

   Written by Stephane Carrez (stcarrez@worldnet.fr)

This file is part of GEL.

GEL is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License** as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GEL is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GEL; see the file COPYING.  If not, write to

the Free Software Foundation, 59 Temple Place - Suite 330,

Boston, MA 02111-1307, USA.  */

#ifndef _SYS_SIO_H

#define _SYS_SIO_H

#include <sys/param.h>

#include <sys/ports.h>

#ifdef __cplusplus

extern "C" {

#endif

extern void serial_init (void);

/* Return != 0 if there is something to read on the serial line.  */

extern unsigned char serial_receive_pending (void);

/* Wait until the SIO has finished to send the character.  */

extern void serial_flush (void);

/* Return != 0 if serial port is ready to send another char.  */

extern unsigned char serial_send_ready (void);

/* Send the character on the serial line.  */

extern void serial_send (char c);

/* Wait for a character on the serial line and return it.  */

extern unsigned char serial_recv (void);

/** Write the string on the serial line.

    @param msg null terminated string to write.

    @see serial_init, serial_send

*/

extern void serial_print (const char *msg);

/** Wait for a string from serial line.

    @param msg buffer that will hold the string.

    @see serial_init, serial_recv

*/

extern void serial_getline (char *buf);

#ifdef mc6811

//# include <asm-m68hc11/sio.h>

#endif

#ifdef mc68hcs12

# include <asm-m68hcs12/sio.h>

#elif defined(mc6812)

//# include <asm-m68hc12/sio.h>

#endif

#ifdef __cplusplus

};

#endif

#endif /* _SYS_SIO_H */