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Not signal but polling-based rs-232c process.

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matsutsuka 2007-09-09 12:22:34 +00:00
parent 91a57c89ba
commit 17da4a73be
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66
cpu/z80/dev/rs-232.c Normal file
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/*
* 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: rs-232.c,v 1.1 2007/09/09 12:22:34 matsutsuka Exp $
*
*/
/*
* \file
* This is RS-232C process based on polling.
* \author
* Takahide Matsutsuka <markn@markn.org>
*/
#include "contiki.h"
#include "serial.h"
#include "rs-232.h"
PROCESS(rs232_process, "RS323C polling process");
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(rs232_process, ev, data)
{
char ch;
PROCESS_BEGIN();
rs232_arch_init();
while(1) {
etimer_set(&timer, CLOCK_SECOND / 16);
PROCESS_WAIT_EVENT();
if(ev == PROCESS_EVENT_TIMER) {
ch = rs232_poll();
if (ch != 0) {
serial_input_byte(ch);
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/

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cpu/z80/dev/rs-232.h Normal file
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/*
* 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: rs-232.h,v 1.1 2007/09/09 12:22:34 matsutsuka Exp $
*
*/
/*
* \file
* This is RS-232C process based on polling.
* \author
* Takahide Matsutsuka <markn@markn.org>
*/
#ifndef __RS_232C_H__
#define __RS_232C_H__
/*
* Implement the following methods for each platform.
*/
/*
* RS-232C initialize.
*/
void rs232_arch_init(void);
/*
* RS-232C polling.
* @return character, zero if no input.
*/
unsigned char rs232_arch_poll(void);
/*
* RS-232C write a byte.
*/
void rs232_arch_writeb(u8_t ch);
PROCESS_NAME(rs232_process);
#endif /* __RS_232C_H__ */