source: rtems/c/src/lib/libbsp/i960/cvme961/console/console.c @ ac7d5ef0

4.104.114.84.95
Last change on this file since ac7d5ef0 was ac7d5ef0, checked in by Joel Sherrill <joel.sherrill@…>, on May 11, 1995 at 5:39:37 PM

Initial revision

  • Property mode set to 100644
File size: 2.6 KB
Line 
1/*
2 *  This file contains the MVME136 console IO package.
3 *
4 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
5 *  On-Line Applications Research Corporation (OAR).
6 *  All rights assigned to U.S. Government, 1994.
7 *
8 *  This material may be reproduced by or for the U.S. Government pursuant
9 *  to the copyright license under the clause at DFARS 252.227-7013.  This
10 *  notice must appear in all copies of this file and its derivatives.
11 *
12 *  $Id$
13 */
14
15#define C961_INIT
16
17#include <rtems.h>
18#include "console.h"
19#include "bsp.h"
20
21/*  console_initialize
22 *
23 *  This routine initializes the console IO driver.
24 *
25 *  Input parameters: NONE
26 *
27 *  Output parameters:  NONE
28 *
29 *  Return values:
30 */
31
32rtems_device_driver console_initialize(
33  rtems_device_major_number  major,
34  rtems_device_minor_number  minor,
35  void                      *arg,
36  rtems_id                   self,
37  rtems_unsigned32          *status
38)
39{
40  *status = RTEMS_SUCCESSFUL;
41}
42
43/*
44 *  NINDY_IO( ... )
45 *
46 *  Interface to NINDY.
47 */
48
49#define NINDY_INPUT   0
50#define NINDY_OUTPUT  1
51
52void NINDY_IO();
53
54void ___NINDY_IO_WRAPPER( void )  /* never called */
55{
56   asm volatile ( "       .text" );
57   asm volatile ( "       .align 4" );
58   asm volatile ( "       .globl _NINDY_IO" );
59   asm volatile ( "_NINDY_IO:" );
60   asm volatile ( "        calls   0       /* call console routines */" );
61   asm volatile ( "        ret" );
62}
63
64/*  inbyte
65 *
66 *  This routine reads a character from the console using NINDY.
67 *
68 *  Input parameters: NONE
69 *
70 *  Output parameters:  NONE
71 *
72 *  Return values:
73 *    character read from UART
74 */
75
76char inbyte( void )
77{
78  char ch;
79
80  NINDY_IO( NINDY_INPUT, &ch );
81  return ch;
82}
83
84
85/*  outbyte
86 *
87 *  This routine transmits a character out the console using NINDY.
88 *
89 *  Input parameters:
90 *    ch  - character to be transmitted
91 *
92 *  Output parameters:  NONE
93 */
94
95void outbyte(
96  char ch
97)
98{
99  NINDY_IO( NINDY_OUTPUT, ch );
100}
101
102/*
103 * __read  -- read bytes from the serial port. Ignore fd, since
104 *            we only have stdin.
105 */
106
107int __read(
108  int fd,
109  char *buf,
110  int nbytes
111)
112{
113  int i = 0;
114
115  for (i = 0; i < nbytes; i++) {
116    *(buf + i) = inbyte();
117    if ((*(buf + i) == '\n') || (*(buf + i) == '\r')) {
118      (*(buf + i++)) = '\n';
119      (*(buf + i)) = 0;
120      break;
121    }
122  }
123  return (i);
124}
125
126/*
127 * __write -- write bytes to the serial port. Ignore fd, since
128 *            stdout and stderr are the same. Since we have no filesystem,
129 *            open will only return an error.
130 */
131
132int __write(
133  int fd,
134  char *buf,
135  int nbytes
136)
137{
138  int i;
139
140  for (i = 0; i < nbytes; i++) {
141    if (*(buf + i) == '\n') {
142      outbyte ('\r');
143    }
144    outbyte (*(buf + i));
145  }
146  return (nbytes);
147}
Note: See TracBrowser for help on using the repository browser.