1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Set Time of Day Given a Timestamp |
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5 | * |
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6 | * @ingroup ScoreTOD |
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7 | */ |
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8 | |
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9 | /* COPYRIGHT (c) 1989-2007. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/score/todimpl.h> |
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22 | #include <rtems/score/threaddispatch.h> |
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23 | #include <rtems/score/watchdogimpl.h> |
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24 | |
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25 | void _TOD_Set_with_timestamp( |
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26 | const Timestamp_Control *tod_as_timestamp |
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27 | ) |
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28 | { |
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29 | TOD_Control *tod = &_TOD; |
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30 | uint32_t nanoseconds = _Timestamp_Get_nanoseconds( tod_as_timestamp ); |
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31 | Watchdog_Interval seconds_next = _Timestamp_Get_seconds( tod_as_timestamp ); |
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32 | Watchdog_Interval seconds_now; |
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33 | ISR_lock_Context lock_context; |
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34 | |
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35 | _Thread_Disable_dispatch(); |
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36 | |
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37 | seconds_now = _TOD_Seconds_since_epoch(); |
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38 | |
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39 | if ( seconds_next < seconds_now ) |
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40 | _Watchdog_Adjust_seconds( WATCHDOG_BACKWARD, seconds_now - seconds_next ); |
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41 | else |
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42 | _Watchdog_Adjust_seconds( WATCHDOG_FORWARD, seconds_next - seconds_now ); |
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43 | |
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44 | _TOD_Acquire( tod, &lock_context ); |
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45 | tod->now = *tod_as_timestamp; |
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46 | _TOD_Release( tod, &lock_context ); |
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47 | |
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48 | tod->seconds_trigger = nanoseconds; |
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49 | tod->is_set = true; |
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50 | |
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51 | _Thread_Enable_dispatch(); |
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52 | } |
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