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Kernel changes to improve power saving:

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+ The timer task now blocks indefinitely if there are no timers active, allowing eTaskConfirmSleepModeStatus to return eNoTasksWaitingTimeout when configUSE_TIMERS is set to 1.
+ The next unblock time is calculated automatically after a task unblocks when waiting for a notification, allowing deep sleep to be entered earlier.
This commit is contained in:
Richard Barry 2015-05-20 15:46:40 +00:00
parent 067c1573c3
commit 267dc24bb3
9 changed files with 96 additions and 43 deletions
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4
FreeRTOS/Source/timers.c
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@ -195,7 +195,7 @@ static void prvTimerTask( void *pvParameters ) PRIVILEGED_FUNCTION;
* Called by the timer service task to interpret and process a command it
* received on the timer queue.
*/
static void prvProcessReceivedCommands( void ) PRIVILEGED_FUNCTION;
static void prvProcessReceivedCommands( void ) PRIVILEGED_FUNCTION;
/*
* Insert the timer into either xActiveTimerList1, or xActiveTimerList2,
@ -468,7 +468,7 @@ BaseType_t xTimerListsWereSwitched;
received - whichever comes first. The following line cannot
be reached unless xNextExpireTime > xTimeNow, except in the
case when the current timer list is empty. */
vQueueWaitForMessageRestricted( xTimerQueue, ( xNextExpireTime - xTimeNow ) );
vQueueWaitForMessageRestricted( xTimerQueue, ( xNextExpireTime - xTimeNow ), xListWasEmpty );
if( xTaskResumeAll() == pdFALSE )
{