nes-proj/cpu/6502/net/slip-drv.c

82 lines
2.5 KiB
C

/*
* Copyright (c) 2004, Adam Dunkels.
* 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.
*
* This file is part of the Contiki OS
*
* $Id: slip-drv.c,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
*
*/
#include "contiki-net.h"
#include "rs232dev.h"
static u8_t output(void);
SERVICE(slip_drv_service, packet_service, { output };);
PROCESS(slip_drv_process, "SLIP driver");
/*---------------------------------------------------------------------------*/
static u8_t
output(void)
{
rs232dev_send();
return 0;
}
/*---------------------------------------------------------------------------*/
static void
pollhandler(void)
{
uip_len = rs232dev_poll();
if(uip_len > 0) {
tcpip_input();
}
}
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(slip_drv_process, ev, data)
{
PROCESS_POLLHANDLER(pollhandler());
PROCESS_EXITHANDLER(rs232dev_unload());
PROCESS_BEGIN();
rs232dev_init();
SERVICE_REGISTER(slip_drv_service);
process_poll(&slip_drv_process);
while(1) {
PROCESS_YIELD();
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/