Contiki 2.5
slip_uart1.c
1 /*
2  * Copyright (c) 2006, Swedish Institute of Computer Science
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * @(#)$Id: slip_uart1.c,v 1.8 2008/02/03 20:59:35 adamdunkels Exp $
30  */
31 
32 /*
33  * Machine dependent MSP430 SLIP routines for UART1.
34  */
35 
36 #include "contiki.h"
37 #include "dev/slip.h"
38 #include "dev/uart1.h"
39 /*---------------------------------------------------------------------------*/
40 void
41 slip_arch_writeb(unsigned char c)
42 {
43  uart1_writeb(c);
44 }
45 /*---------------------------------------------------------------------------*/
46 /*
47  * The serial line is used to transfer IP packets using slip. To make
48  * it possible to send debug output over the same line we send debug
49  * output as slip frames (i.e delimeted by SLIP_END).
50  *
51  */
52 /*---------------------------------------------------------------------------*/
53 #if WITH_UIP
54 int
55 putchar(int c)
56 {
57 #define SLIP_END 0300
58  static char debug_frame = 0;
59 
60  if (!debug_frame) { /* Start of debug output */
61  slip_arch_writeb(SLIP_END);
62  slip_arch_writeb('\r'); /* Type debug line == '\r' */
63  debug_frame = 1;
64  }
65 
66  slip_arch_writeb((char)c);
67 
68  /*
69  * Line buffered output, a newline marks the end of debug output and
70  * implicitly flushes debug output.
71  */
72  if (c == '\n') {
73  slip_arch_writeb(SLIP_END);
74  debug_frame = 0;
75  }
76 
77  return c;
78 }
79 #endif
80 /*---------------------------------------------------------------------------*/
81 /**
82  * Initalize the RS232 port and the SLIP driver.
83  *
84  */
85 void
86 slip_arch_init(unsigned long ubr)
87 {
88  uart1_set_input(slip_input_byte);
89 }
90 /*---------------------------------------------------------------------------*/