1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Increments time of day at each clock tick |
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5 | * |
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6 | * @ingroup ScoreTODConstants |
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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/watchdogimpl.h> |
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23 | #include <rtems/config.h> |
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24 | |
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25 | void _TOD_Tickle_ticks( void ) |
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26 | { |
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27 | TOD_Control *tod = &_TOD; |
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28 | ISR_lock_Context lock_context; |
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29 | Timestamp_Control tick; |
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30 | uint32_t nanoseconds_per_tick; |
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31 | |
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32 | nanoseconds_per_tick = rtems_configuration_get_nanoseconds_per_tick(); |
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33 | |
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34 | /* Convert the tick quantum to a timestamp */ |
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35 | _Timestamp_Set( &tick, 0, nanoseconds_per_tick ); |
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36 | |
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37 | /* Update the counter of ticks since boot */ |
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38 | _Watchdog_Ticks_since_boot += 1; |
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39 | |
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40 | _TOD_Acquire( tod, &lock_context ); |
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41 | |
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42 | /* Update the uptime */ |
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43 | _Timestamp_Add_to( &tod->uptime, &tick ); |
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44 | |
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45 | /* Update the current TOD */ |
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46 | _Timestamp_Add_to( &tod->now, &tick ); |
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47 | |
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48 | _TOD_Release( tod, &lock_context ); |
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49 | |
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50 | _TOD.seconds_trigger += nanoseconds_per_tick; |
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51 | if ( _TOD.seconds_trigger >= 1000000000UL ) { |
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52 | _TOD.seconds_trigger -= 1000000000UL; |
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53 | _Watchdog_Tickle_seconds(); |
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54 | } |
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55 | } |
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56 | |
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