130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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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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* @(#)$Id: rs232.c,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
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*/
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#include <avr/io.h>
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#include <avr/signal.h>
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#include <avr/interrupt.h>
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#include <avr/pgmspace.h>
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#include "contiki.h"
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#include "dev/slip.h"
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#include "dev/serial.h"
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#include "dev/rs232.h"
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static volatile unsigned char txwait;
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/*static unsigned char slipmode;*/
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static int (* input_handler)(unsigned char) = NULL;
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/*---------------------------------------------------------------------------*/
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SIGNAL(SIG_UART0_TRANS)
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{
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txwait = 0;
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}
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/*---------------------------------------------------------------------------*/
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SIGNAL(SIG_UART0_RECV)
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{
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unsigned char c;
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c = UDR0;
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if(input_handler != NULL) {
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input_handler(c);
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}
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/* if(slipmode) {
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slip_input_byte(c);
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} else {
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serial_input_byte(c);
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}*/
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}
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/*---------------------------------------------------------------------------*/
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void
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rs232_init(void)
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{
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/* Enable transmit. */
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UCSR0B = _BV(RXCIE) | _BV(TXCIE) | _BV(RXEN) | _BV(TXEN);
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/* Set baud rate (23 =~ 38400) */
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UBRR0H = 0;
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UBRR0L = 23;
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/* slipmode = 0;*/
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txwait = 0;
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input_handler = NULL;
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}
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/*---------------------------------------------------------------------------*/
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/*void
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rs232_init_slip(void)
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{
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rs232_init();
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slipmode = 1;
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}*/
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/*---------------------------------------------------------------------------*/
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void
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rs232_print_p(prog_char *buf)
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{
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while(pgm_read_byte(buf)) {
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rs232_send(pgm_read_byte(buf));
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++buf;
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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rs232_print(char *buf)
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{
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while(*buf) {
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rs232_send(*buf++);
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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rs232_send(unsigned char c)
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{
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txwait = 1;
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UDR0 = c;
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while(txwait);
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}
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/*---------------------------------------------------------------------------*/
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void
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rs232_set_input(int (*f)(unsigned char))
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{
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input_handler = f;
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}
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/*---------------------------------------------------------------------------*/
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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(c);
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}
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/*---------------------------------------------------------------------------*/
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