94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/*
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* Copyright (c) 2010, University of Colombo School of Computing
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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 copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* @(#)$$
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*/
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/**
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* \file
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* Machine dependent AVR SLIP routines for UART0.
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* \author
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* Kasun Hewage <kasun.ch@gmail.com>
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*/
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#include <stdio.h>
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#include "contiki.h"
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#include "dev/rs232.h"
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#include "slip.h"
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/*---------------------------------------------------------------------------*/
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static int
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slip_putchar(char c, FILE *stream)
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{
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#define SLIP_END 0300
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static char debug_frame = 0;
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if (!debug_frame) { /* Start of debug output */
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slip_arch_writeb(SLIP_END);
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slip_arch_writeb('\r'); /* Type debug line == '\r' */
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debug_frame = 1;
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}
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slip_arch_writeb((unsigned char)c);
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/*
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* Line buffered output, a newline marks the end of debug output and
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* implicitly flushes debug output.
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*/
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if (c == '\n') {
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slip_arch_writeb(SLIP_END);
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debug_frame = 0;
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}
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return c;
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}
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/*---------------------------------------------------------------------------*/
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static FILE slip_stdout = FDEV_SETUP_STREAM(slip_putchar, NULL,
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_FDEV_SETUP_WRITE);
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/*---------------------------------------------------------------------------*/
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void
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slip_arch_init(unsigned long ubr)
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{
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rs232_set_input(SLIP_PORT, slip_input_byte);
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stdout = &slip_stdout;
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}
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/*---------------------------------------------------------------------------*/
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/*
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XXX:
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Currently, the following function is in cpu/avr/dev/rs232.c file. this
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should be moved to here from there hence this is a platform specific slip
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related function.
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void
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slip_arch_writeb(unsigned char c)
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{
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rs232_send(RS232_PORT_0, c);
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}
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*/
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