source: rtems/c/src/lib/libbsp/m68k/idp/console/leds.c @ 9b4422a2

4.115
Last change on this file since 9b4422a2 was 9b4422a2, checked in by Joel Sherrill <joel.sherrill@…>, on May 3, 2012 at 3:09:24 PM

Remove All CVS Id Strings Possible Using a Script

Script does what is expected and tries to do it as
smartly as possible.

+ remove occurrences of two blank comment lines

next to each other after Id string line removed.

+ remove entire comment blocks which only exited to

contain CVS Ids

+ If the processing left a blank line at the top of

a file, it was removed.

  • Property mode set to 100644
File size: 1.9 KB
Line 
1/*
2 * leds.c -- control the led's on a Motorola mc68ec0x0 board.
3 *           Written by rob@cygnus.com (Rob Savoye)
4 */
5#include "leds.h"
6
7void zylons(void);
8void clear_leds(void);
9
10/*
11 * led_putnum --
12 *      print a hex number on the LED. the value of num must be a char with
13 *      the ascii value. ie... number 0 is '0', a is 'a', ' ' (null) clears
14 *      the led display.
15 *      Setting the bit to 0 turns it on, 1 turns it off.
16 *      the LED's are controlled by setting the right bit mask in the base
17 *      address.
18 *      The bits are:
19 *      [d.p | g | f | e | d | c | b | a ] is the byte.
20 *
21 *      The locations are:
22 *
23 *                       a
24 *                     -----
25 *                  f |     | b
26 *                    |  g  |
27 *                     -----
28 *                    |     |
29 *                  e |     | c
30 *                     -----
31 *                       d                . d.p (decimal point)
32 */
33void
34led_putnum ( char num )
35{
36    static unsigned char *leds = (unsigned char *)LED_ADDR;
37    static unsigned char num_bits [18] = {
38      0xff,                                             /* clear all */
39      0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x98, /* numbers 0-9 */
40      0x98, 0x20, 0x3, 0x27, 0x21, 0x4, 0xe             /* letters a-f */
41    };
42
43    if (num >= '0' && num <= '9')
44      num = (num - '0') + 1;
45
46    if (num >= 'a' && num <= 'f')
47      num = (num - 'a') + 12;
48
49    if (num == ' ')
50      num = 0;
51
52    *leds = num_bits[(int)num];
53}
54
55/* This procedure added by Doug McBride, Colorado Space Grant College --
56   Probably should be a macro instead */
57void
58clear_leds ( )
59{
60    static unsigned char *leds = (unsigned char *)LED_ADDR;
61    *leds = 0xFF;
62}
63
64void rtems_bsp_delay( int );
65
66/*
67 * zylons -- draw a rotating pattern. NOTE: this function never returns.
68 */
69void
70zylons()
71{
72  unsigned char *leds   = (unsigned char *)LED_ADDR;
73  unsigned char curled = 0xfe;
74
75  while (1)
76    {
77      *leds = curled;
78      curled = (curled >> 1) | (curled << 7);
79      rtems_bsp_delay ( 8000 );
80    }
81}
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