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comparison packages/devs/wallclock/mips/ref4955/current/src/wallclock_ref4955.cxx @ 134:d2f49caf9e38 ecos-sw-2000-11-03

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Merge from eCos master repository on 2000-11-03-09:00:49-GMT
author jlarmour
date Fri, 03 Nov 2000 21:17:40 +0000
parents
children 11b54a94cf58
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133:98d71f4d8243 134:d2f49caf9e38
1 //==========================================================================
2 //
3 // devs/wallclock/mips/ref4955/ref4955.cxx
4 //
5 // Wallclock implementation
6 //
7 //==========================================================================
8 //####COPYRIGHTBEGIN####
9 //
10 // -------------------------------------------
11 // The contents of this file are subject to the Red Hat eCos Public License
12 // Version 1.1 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at
14 // http://www.redhat.com/
15 //
16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under
19 // the License.
20 //
21 // The Original Code is eCos - Embedded Configurable Operating System,
22 // released September 30, 1998.
23 //
24 // The Initial Developer of the Original Code is Red Hat.
25 // Portions created by Red Hat are
26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
27 // All Rights Reserved.
28 // -------------------------------------------
29 //
30 //####COPYRIGHTEND####
31 //==========================================================================
32 //#####DESCRIPTIONBEGIN####
33 //
34 // Author(s): jskov
35 // Contributors: jskov
36 // Date: 2000-05-25
37 // Purpose: Wallclock driver for REF4955
38 //
39 //####DESCRIPTIONEND####
40 //
41 //==========================================================================
42
43 #include <pkgconf/kernel.h> // Kernel config
44 #include <pkgconf/wallclock.h> // Wallclock device config
45
46 #include <cyg/hal/hal_io.h> // IO macros
47 #include <cyg/infra/cyg_type.h> // Common type definitions and support
48
49 #include <cyg/io/wallclock.hxx> // The WallClock API
50 #include <cyg/io/wallclock/wallclock.inl> // Helpers
51
52 #include <cyg/infra/diag.h> // For debugging
53
54 // REF4955 has a Dallas 1742W part.
55 #define DS_BASE 0xb5000000
56 #include <cyg/io/wallclock/ds1742.inl>
57
58 //-----------------------------------------------------------------------------
59 // Functions required for the hardware-driver API.
60
61 // Returns the number of seconds elapsed since 1970-01-01 00:00:00.
62 cyg_uint32
63 Cyg_WallClock::get_hw_seconds(void)
64 {
65 cyg_uint32 year, month, mday, hour, minute, second;
66
67 get_ds_hwclock(&year, &month, &mday, &hour, &minute, &second);
68
69 #if 0
70 // This will cause the test to eventually fail due to these printouts
71 // causing timer interrupts to be lost...
72 diag_printf("year %02d\n", year);
73 diag_printf("month %02d\n", month);
74 diag_printf("mday %02d\n", mday);
75 diag_printf("hour %02d\n", hour);
76 diag_printf("minute %02d\n", minute);
77 diag_printf("second %02d\n", second);
78 #endif
79
80 cyg_uint32 now = _simple_mktime(year, month, mday, hour, minute, second);
81 return now;
82 }
83
84 #ifdef CYGSEM_WALLCLOCK_SET_GET_MODE
85
86 // Sets the clock. Argument is seconds elapsed since 1970-01-01 00:00:00.
87 void
88 Cyg_WallClock::set_hw_seconds( cyg_uint32 secs )
89 {
90 cyg_uint32 year, month, mday, hour, minute, second;
91
92 _simple_mkdate(secs, &year, &month, &mday, &hour, &minute, &second);
93
94 set_ds_hwclock(year, month, mday, hour, minute, second);
95 }
96
97 #endif
98
99 void
100 Cyg_WallClock::init_hw_seconds(void)
101 {
102 #ifdef CYGSEM_WALLCLOCK_SET_GET_MODE
103 init_ds_hwclock();
104 #else
105 // This is our base: 1970-01-01 00:00:00
106 // Set the HW clock - if for nothing else, just to be sure it's in a
107 // legal range. Any arbitrary base could be used.
108 // After this the hardware clock is only read.
109 set_ds_hwclock(1970,1,1,0,0,0);
110 #endif
111 }
112
113 //-----------------------------------------------------------------------------
114 // End of devs/wallclock/mips/ref4955/wallclock_ref4955.cxx