source: rtems/c/src/lib/libbsp/no_cpu/no_bsp/console/console.c @ b547e84

Last change on this file since b547e84 was b547e84, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 4, 2003 at 6:44:56 PM

2003-09-04 Joel Sherrill <joel@…>

  • clock/ckinit.c, console/console.c, include/bsp.h, shmsupp/addrconv.c, shmsupp/getcfg.c, shmsupp/lock.c, shmsupp/mpisr.c, startup/bspclean.c, startup/bspstart.c, startup/linkcmds, startup/main.c, startup/setvec.c, timer/timer.c, timer/timerisr.c: URL for license changed.
  • Property mode set to 100644
File size: 3.8 KB
Line 
1/*
2 *  This file contains the template for a console IO package.
3 *
4 *  COPYRIGHT (c) 1989-1999.
5 *  On-Line Applications Research Corporation (OAR).
6 *
7 *  The license and distribution terms for this file may be
8 *  found in the file LICENSE in this distribution or at
9 *  http://www.rtems.com/license/LICENSE.
10 *
11 *  $Id$
12 */
13
14#define NO_BSP_INIT
15
16#include <bsp.h>
17#include <rtems/libio.h>
18
19/*  console_initialize
20 *
21 *  This routine initializes the console IO driver.
22 *
23 *  Input parameters: NONE
24 *
25 *  Output parameters:  NONE
26 *
27 *  Return values:
28 */
29
30rtems_device_driver console_initialize(
31  rtems_device_major_number  major,
32  rtems_device_minor_number  minor,
33  void                      *arg
34)
35{
36  rtems_status_code status;
37 
38  status = rtems_io_register_name(
39    "/dev/console",
40    major,
41    (rtems_device_minor_number) 0
42  );
43 
44  if (status != RTEMS_SUCCESSFUL)
45    rtems_fatal_error_occurred(status);
46 
47  return RTEMS_SUCCESSFUL;
48}
49
50
51/*  is_character_ready
52 *
53 *  This routine returns TRUE if a character is available.
54 *
55 *  Input parameters: NONE
56 *
57 *  Output parameters:  NONE
58 *
59 *  Return values:
60 */
61
62rtems_boolean is_character_ready(
63  char *ch
64)
65{
66  *ch = '\0';   /* return NULL for no particular reason */
67  return(TRUE);
68}
69
70/*  inbyte
71 *
72 *  This routine reads a character from the SOURCE.
73 *
74 *  Input parameters: NONE
75 *
76 *  Output parameters:  NONE
77 *
78 *  Return values:
79 *    character read from SOURCE
80 */
81
82char inbyte( void )
83{
84  /*
85   *  If polling, wait until a character is available.
86   */
87
88  return '\0';
89}
90
91/*  outbyte
92 *
93 *  This routine transmits a character out the SOURCE.  It may support
94 *  XON/XOFF flow control.
95 *
96 *  Input parameters:
97 *    ch  - character to be transmitted
98 *
99 *  Output parameters:  NONE
100 */
101
102void outbyte(
103  char ch
104)
105{
106  /*
107   *  If polling, wait for the transmitter to be ready.
108   *  Check for flow control requests and process.
109   *  Then output the character.
110   */
111
112  /*
113   *  Carriage Return/New line translation.
114   */
115
116  if ( ch == '\n' )
117    outbyte( '\r' );
118}
119
120
121/*
122 *  Open entry point
123 */
124
125rtems_device_driver console_open(
126  rtems_device_major_number major,
127  rtems_device_minor_number minor,
128  void                    * arg
129)
130{
131  return RTEMS_SUCCESSFUL;
132}
133 
134/*
135 *  Close entry point
136 */
137
138rtems_device_driver console_close(
139  rtems_device_major_number major,
140  rtems_device_minor_number minor,
141  void                    * arg
142)
143{
144  return RTEMS_SUCCESSFUL;
145}
146
147/*
148 * read bytes from the serial port. We only have stdin.
149 */
150
151rtems_device_driver console_read(
152  rtems_device_major_number major,
153  rtems_device_minor_number minor,
154  void                    * arg
155)
156{
157  rtems_libio_rw_args_t *rw_args;
158  char *buffer;
159  int maximum;
160  int count = 0;
161 
162  rw_args = (rtems_libio_rw_args_t *) arg;
163
164  buffer = rw_args->buffer;
165  maximum = rw_args->count;
166
167  for (count = 0; count < maximum; count++) {
168    buffer[ count ] = inbyte();
169    if (buffer[ count ] == '\n' || buffer[ count ] == '\r') {
170      buffer[ count++ ]  = '\n';
171      break;
172    }
173  }
174
175  rw_args->bytes_moved = count;
176  return (count >= 0) ? RTEMS_SUCCESSFUL : RTEMS_UNSATISFIED;
177}
178
179/*
180 * write bytes to the serial port. Stdout and stderr are the same.
181 */
182
183rtems_device_driver console_write(
184  rtems_device_major_number major,
185  rtems_device_minor_number minor,
186  void                    * arg
187)
188{
189  int count;
190  int maximum;
191  rtems_libio_rw_args_t *rw_args;
192  char *buffer;
193
194  rw_args = (rtems_libio_rw_args_t *) arg;
195
196  buffer = rw_args->buffer;
197  maximum = rw_args->count;
198
199  for (count = 0; count < maximum; count++) {
200    if ( buffer[ count ] == '\n') {
201      outbyte('\r');
202    }
203    outbyte( buffer[ count ] );
204  }
205
206  rw_args->bytes_moved = maximum;
207  return 0;
208}
209
210/*
211 *  IO Control entry point
212 */
213
214rtems_device_driver console_control(
215  rtems_device_major_number major,
216  rtems_device_minor_number minor,
217  void                    * arg
218)
219{
220  return RTEMS_SUCCESSFUL;
221}
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