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annotate packages/devs/wallclock/current/include/wallclock.hxx @ 64:c38311975d4f ecos-sw-2000-01-28

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Merge from eCos master repository on 2000-01-28-04:28:11-GMT
author jlarmour
date Fri, 28 Jan 2000 04:59:39 +0000
parents 443894e2e912
children bf00f99aec69
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1 #ifndef CYGONCE_DEVS_WALLCLOCK_HXX
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2 #define CYGONCE_DEVS_WALLCLOCK_HXX
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3
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4 //==========================================================================
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5 //
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6 // wallclock.hxx
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7 //
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8 // Wallclock interface declaration
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9 //
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10 //==========================================================================
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11 //####COPYRIGHTBEGIN####
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12 //
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13 // -------------------------------------------
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14 // The contents of this file are subject to the Red Hat eCos Public License
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15 // Version 1.0 (the "License"); you may not use this file except in
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16 // compliance with the License. You may obtain a copy of the License at
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17 // http://sourceware.cygnus.com/ecos
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18 //
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19 // Software distributed under the License is distributed on an
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20 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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21 // License for the specific language governing rights and limitations under
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22 // the License.
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23 //
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24 // The Original Code is eCos - Embedded Configurable Operating System,
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25 // released September 30, 1998.
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26 //
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27 // The Initial Developer of the Original Code is Red Hat.
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28 // Portions created by Red Hat are
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29 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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30 // All Rights Reserved.
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31 // -------------------------------------------
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32 //
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33 //####COPYRIGHTEND####
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34 //==========================================================================
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35 //#####DESCRIPTIONBEGIN####
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36 //
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37 // Author(s): nickg
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38 // Contributors: nickg
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39 // Date: 1999-03-05
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40 // Purpose: Wall Clock declarations
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41 // Description: This file defines the interface to the wall clock device
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42 // that provides real time stamps. This is either an interface
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43 // to a hardware RTC like the Dallas DS12887, or it is emulated
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44 // using the kernel clock.
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45 // Usage: #include <cyg/devs/wallclock.hxx>
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46 //
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47 //####DESCRIPTIONEND####
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48 //
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49 //==========================================================================
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50
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51 #include <cyg/infra/cyg_type.h>
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52
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53 // -------------------------------------------------------------------------
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54 // Wallclock class
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55
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56 class Cyg_WallClock
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57 {
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58
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59 public:
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60
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61 Cyg_WallClock();
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62
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63 // Returns the current timestamp. This may involve reading the
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64 // hardware, so it may take anything up to a second to complete.
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65 cyg_uint32 get_current_time();
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66
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67 // Sets the value of the timestamp relative to now. This may involve
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68 // writing to the hardware, so it may take anything up to a second to
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69 // complete.
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70 void set_current_time( cyg_uint32 time_stamp );
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71
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72 // A static pointer to the single system defined wall clock device.
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73 static Cyg_WallClock *wallclock;
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74
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75 };
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76
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77 // -------------------------------------------------------------------------
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78
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79 #endif // ifndef CYGONCE_DEVS_WALLCLOCK_HXX
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80 // EOF wallclock.hxx