77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/*
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* Copyright (c) 2007, Takahide Matsutsuka.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: rs232.c,v 1.5 2009/03/17 20:20:45 adamdunkels Exp $
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*
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*/
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/*
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* \file
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* This is RS-232C process based on polling.
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* Note that rs232.c and rs232-slip.c cannot be used at the same time.
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* \author
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* Takahide Matsutsuka <markn@markn.org>
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*/
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#include "contiki.h"
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#include "dev/slip.h"
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#include "dev/serial-line.h"
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#include "dev/rs232.h"
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PROCESS(rs232_process, "RS-232C polling process");
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(rs232_process, ev, data)
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{
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static struct etimer timer;
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char ch;
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unsigned char i, stat;
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PROCESS_BEGIN();
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rs232_arch_init(RS232_BAUD_RATE);
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etimer_set(&timer, CLOCK_SECOND / 16);
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while(1) {
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PROCESS_WAIT_EVENT();
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if (etimer_expired(&timer)) {
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for (i = 0; i < RS232_BUFSIZE; i++) {
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ch = rs232_arch_poll(&stat);
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if (stat == 0) {
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break;
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}
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/* We have an input data */
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RS232_CALLBACK(ch);
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}
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etimer_reset(&timer);
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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