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comparison packages/devs/wallclock/current/include/wallclock.hxx @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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-1:000000000000 0:3111d98ba7b3
1 #ifndef CYGONCE_DEVS_WALLCLOCK_HXX
2 #define CYGONCE_DEVS_WALLCLOCK_HXX
3
4 //==========================================================================
5 //
6 // wallclock.hxx
7 //
8 // Wallclock interface declaration
9 //
10 //==========================================================================
11 //####COPYRIGHTBEGIN####
12 //
13 // -------------------------------------------
14 // The contents of this file are subject to the Cygnus eCos Public License
15 // Version 1.0 (the "License"); you may not use this file except in
16 // compliance with the License. You may obtain a copy of the License at
17 // http://sourceware.cygnus.com/ecos
18 //
19 // Software distributed under the License is distributed on an "AS IS"
20 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
21 // License for the specific language governing rights and limitations under
22 // the License.
23 //
24 // The Original Code is eCos - Embedded Cygnus Operating System, released
25 // September 30, 1998.
26 //
27 // The Initial Developer of the Original Code is Cygnus. Portions created
28 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
29 // -------------------------------------------
30 //
31 //####COPYRIGHTEND####
32 //==========================================================================
33 //#####DESCRIPTIONBEGIN####
34 //
35 // Author(s): nickg
36 // Contributors: nickg
37 // Date: 1998-07-14
38 // Purpose: Wall Clock declarations
39 // Description: This file defines the interface to the wall clock device
40 // that provides real time stamps. This is either an interface
41 // to a hardware RTC like the Dallas DS12887, or it is emulated
42 // using the kernel clock.
43 // Usage: #include <cyg/devs/wallclock.hxx>
44 //
45 //####DESCRIPTIONEND####
46 //
47 //==========================================================================
48
49 #include <cyg/kernel/ktypes.h>
50 #include <cyg/infra/cyg_ass.h> // assertion macros
51
52 // -------------------------------------------------------------------------
53 // Wallclock class
54
55 class Cyg_WallClock
56 {
57
58 public:
59
60 Cyg_WallClock();
61
62 // Returns the current timestamp. This may involve reading the
63 // hardware, so it may take anything up to a second to complete.
64 cyg_uint32 get_current_time();
65
66 // Sets the value of the timestamp relative to now. This may involve
67 // writing to the hardware, so it may take anything up to a second to
68 // complete.
69 void set_current_time( cyg_uint32 time_stamp );
70
71 // A static pointer to the single system defined wall clock device.
72 static Cyg_WallClock *wallclock;
73
74 };
75
76 // -------------------------------------------------------------------------
77
78 #endif // ifndef CYGONCE_DEVS_WALLCLOCK_HXX
79 // EOF wallclock.hxx