1 | /* |
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2 | * Time of Day (TOD) Handler |
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3 | * |
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4 | * |
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5 | * COPYRIGHT (c) 1989-1999. |
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6 | * On-Line Applications Research Corporation (OAR). |
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7 | * |
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8 | * The license and distribution terms for this file may be |
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9 | * found in the file LICENSE in this distribution or at |
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10 | * http://www.OARcorp.com/rtems/license.html. |
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11 | * |
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12 | * $Id$ |
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13 | */ |
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14 | |
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15 | #include <rtems/system.h> |
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16 | #include <rtems/score/object.h> |
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17 | #include <rtems/score/thread.h> |
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18 | #include <rtems/score/tod.h> |
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19 | #include <rtems/score/watchdog.h> |
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20 | |
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21 | /*PAGE |
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22 | * |
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23 | * _TOD_Set |
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24 | * |
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25 | * This rountine sets the current date and time with the specified |
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26 | * new date and time structure. |
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27 | * |
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28 | * Input parameters: |
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29 | * the_tod - pointer to the time and date structure |
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30 | * seconds_since_epoch - seconds since system epoch |
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31 | * |
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32 | * Output parameters: NONE |
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33 | */ |
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34 | |
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35 | void _TOD_Set( |
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36 | TOD_Control *the_tod, |
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37 | Watchdog_Interval seconds_since_epoch |
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38 | ) |
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39 | { |
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40 | Watchdog_Interval ticks_until_next_second; |
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41 | |
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42 | _Thread_Disable_dispatch(); |
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43 | _TOD_Deactivate(); |
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44 | |
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45 | if ( seconds_since_epoch < _TOD_Seconds_since_epoch ) |
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46 | _Watchdog_Adjust_seconds( WATCHDOG_BACKWARD, |
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47 | _TOD_Seconds_since_epoch - seconds_since_epoch ); |
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48 | else |
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49 | _Watchdog_Adjust_seconds( WATCHDOG_FORWARD, |
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50 | seconds_since_epoch - _TOD_Seconds_since_epoch ); |
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51 | |
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52 | ticks_until_next_second = _TOD_Ticks_per_second; |
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53 | if ( ticks_until_next_second > _TOD_Current.ticks ) |
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54 | ticks_until_next_second -= _TOD_Current.ticks; |
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55 | |
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56 | _TOD_Current = *the_tod; |
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57 | _TOD_Seconds_since_epoch = seconds_since_epoch; |
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58 | _TOD_Is_set = TRUE; |
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59 | _TOD_Activate( ticks_until_next_second ); |
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60 | |
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61 | _Thread_Enable_dispatch(); |
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62 | } |
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63 | |
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