/*
 * Copyright (c) 2007, Takahide Matsutsuka.
 * All rights reserved. 
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution. 
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.  
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 *
 * $Id: rs232.h,v 1.4 2007/09/29 03:58:38 matsutsuka Exp $
 *
 */
/*
 * \file
 * 	This is RS-232C process based on polling.
 * \author
 * 	Takahide Matsutsuka <markn@markn.org>
 */

#ifndef __RS232_H__
#define __RS232_H__

/*
 * Implement the following methods for each platform.
 */

/*
 * An architecture-depend implementation of RS-232C initialization.
 */
void rs232_arch_init(unsigned long ubr);

/*
 * An architecture-depend implementation of RS-232C polling.
 * @return character, stat == zero if no input.
 */
unsigned char rs232_arch_poll(unsigned char* stat);

/*
 * An architecture-depend implementation of RS-232C writing a byte.
 */
void rs232_arch_writeb(unsigned char ch);

PROCESS_NAME(rs232_process);

/*
 * if you want to use simple serial communication,
 * define RS232_CONF_CALLBACK as serial_input_byte.
 * The default is SLIP.
 */
#ifdef RS232_CONF_CALLBACK
#define RS232_CALLBACK                  RS232_CONF_CALLBACK
#else /* RS232_CONF_CALLBACK */
#define RS232_CALLBACK                  slip_input_byte
#endif /* RS232_CONF_CALLBACK */

#ifdef RS232_CONF_BUFISZE
#define RS232_BUFSIZE RS232_CONF_BUFISZE
#else /* RS232_CONF_BUFISZE */
#define RS232_BUFSIZE 64
#endif /* RS232_CONF_BUFISZE */

#ifdef RS232_CONF_BAUD_RATE
#define RS232_BAUD_RATE RS232_CONF_BAUD_RATE
#else /* RS232_CONF_BAUD_RATE */
#define RS232_BAUD_RATE 9600
#endif /* RS232_CONF_BAUD_RATE */

#endif /* __RS232_H__ */
