nes-proj/cpu/z80/dev/rs232.h

89 lines
2.8 KiB
C

/*
* 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__ */