adding FreeRTOS as submodule

1 files changed, 0 insertions, 353 deletions

diff --git a/lib/FreeRTOS/Source/croutine.c b/lib/FreeRTOS/Source/croutine.c
deleted file mode 100644
index b71588451..000000000
--- a/lib/FreeRTOS/Source/croutine.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/*
- * FreeRTOS Kernel V10.0.1
- * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
- * the Software, and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
- * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
- * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * http://www.FreeRTOS.org
- * http://aws.amazon.com/freertos
- *
- * 1 tab == 4 spaces!
- */
-
-#include "FreeRTOS.h"
-#include "task.h"
-#include "croutine.h"
-
-/* Remove the whole file is co-routines are not being used. */
-#if( configUSE_CO_ROUTINES != 0 )
-
-/*
- * Some kernel aware debuggers require data to be viewed to be global, rather
- * than file scope.
- */
-#ifdef portREMOVE_STATIC_QUALIFIER
-	#define static
-#endif
-
-
-/* Lists for ready and blocked co-routines. --------------------*/
-static List_t pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ];	/*< Prioritised ready co-routines. */
-static List_t xDelayedCoRoutineList1;									/*< Delayed co-routines. */
-static List_t xDelayedCoRoutineList2;									/*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */
-static List_t * pxDelayedCoRoutineList;									/*< Points to the delayed co-routine list currently being used. */
-static List_t * pxOverflowDelayedCoRoutineList;							/*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */
-static List_t xPendingReadyCoRoutineList;								/*< Holds co-routines that have been readied by an external event.  They cannot be added directly to the ready lists as the ready lists cannot be accessed by interrupts. */
-
-/* Other file private variables. --------------------------------*/
-CRCB_t * pxCurrentCoRoutine = NULL;
-static UBaseType_t uxTopCoRoutineReadyPriority = 0;
-static TickType_t xCoRoutineTickCount = 0, xLastTickCount = 0, xPassedTicks = 0;
-
-/* The initial state of the co-routine when it is created. */
-#define corINITIAL_STATE	( 0 )
-
-/*
- * Place the co-routine represented by pxCRCB into the appropriate ready queue
- * for the priority.  It is inserted at the end of the list.
- *
- * This macro accesses the co-routine ready lists and therefore must not be
- * used from within an ISR.
- */
-#define prvAddCoRoutineToReadyQueue( pxCRCB )																		\
-{																													\
-	if( pxCRCB->uxPriority > uxTopCoRoutineReadyPriority )															\
-	{																												\
-		uxTopCoRoutineReadyPriority = pxCRCB->uxPriority;															\
-	}																												\
-	vListInsertEnd( ( List_t * ) &( pxReadyCoRoutineLists[ pxCRCB->uxPriority ] ), &( pxCRCB->xGenericListItem ) );	\
-}
-
-/*
- * Utility to ready all the lists used by the scheduler.  This is called
- * automatically upon the creation of the first co-routine.
- */
-static void prvInitialiseCoRoutineLists( void );
-
-/*
- * Co-routines that are readied by an interrupt cannot be placed directly into
- * the ready lists (there is no mutual exclusion).  Instead they are placed in
- * in the pending ready list in order that they can later be moved to the ready
- * list by the co-routine scheduler.
- */
-static void prvCheckPendingReadyList( void );
-
-/*
- * Macro that looks at the list of co-routines that are currently delayed to
- * see if any require waking.
- *
- * Co-routines are stored in the queue in the order of their wake time -
- * meaning once one co-routine has been found whose timer has not expired
- * we need not look any further down the list.
- */
-static void prvCheckDelayedList( void );
-
-/*-----------------------------------------------------------*/
-
-BaseType_t xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, UBaseType_t uxPriority, UBaseType_t uxIndex )
-{
-BaseType_t xReturn;
-CRCB_t *pxCoRoutine;
-
-	/* Allocate the memory that will store the co-routine control block. */
-	pxCoRoutine = ( CRCB_t * ) pvPortMalloc( sizeof( CRCB_t ) );
-	if( pxCoRoutine )
-	{
-		/* If pxCurrentCoRoutine is NULL then this is the first co-routine to
-		be created and the co-routine data structures need initialising. */
-		if( pxCurrentCoRoutine == NULL )
-		{
-			pxCurrentCoRoutine = pxCoRoutine;
-			prvInitialiseCoRoutineLists();
-		}
-
-		/* Check the priority is within limits. */
-		if( uxPriority >= configMAX_CO_ROUTINE_PRIORITIES )
-		{
-			uxPriority = configMAX_CO_ROUTINE_PRIORITIES - 1;
-		}
-
-		/* Fill out the co-routine control block from the function parameters. */
-		pxCoRoutine->uxState = corINITIAL_STATE;
-		pxCoRoutine->uxPriority = uxPriority;
-		pxCoRoutine->uxIndex = uxIndex;
-		pxCoRoutine->pxCoRoutineFunction = pxCoRoutineCode;
-
-		/* Initialise all the other co-routine control block parameters. */
-		vListInitialiseItem( &( pxCoRoutine->xGenericListItem ) );
-		vListInitialiseItem( &( pxCoRoutine->xEventListItem ) );
-
-		/* Set the co-routine control block as a link back from the ListItem_t.
-		This is so we can get back to the containing CRCB from a generic item
-		in a list. */
-		listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xGenericListItem ), pxCoRoutine );
-		listSET_LIST_ITEM_OWNER( &( pxCoRoutine->xEventListItem ), pxCoRoutine );
-
-		/* Event lists are always in priority order. */
-		listSET_LIST_ITEM_VALUE( &( pxCoRoutine->xEventListItem ), ( ( TickType_t ) configMAX_CO_ROUTINE_PRIORITIES - ( TickType_t ) uxPriority ) );
-
-		/* Now the co-routine has been initialised it can be added to the ready
-		list at the correct priority. */
-		prvAddCoRoutineToReadyQueue( pxCoRoutine );
-
-		xReturn = pdPASS;
-	}
-	else
-	{
-		xReturn = errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY;
-	}
-
-	return xReturn;
-}
-/*-----------------------------------------------------------*/
-
-void vCoRoutineAddToDelayedList( TickType_t xTicksToDelay, List_t *pxEventList )
-{
-TickType_t xTimeToWake;
-
-	/* Calculate the time to wake - this may overflow but this is
-	not a problem. */
-	xTimeToWake = xCoRoutineTickCount + xTicksToDelay;
-
-	/* We must remove ourselves from the ready list before adding
-	ourselves to the blocked list as the same list item is used for
-	both lists. */
-	( void ) uxListRemove( ( ListItem_t * ) &( pxCurrentCoRoutine->xGenericListItem ) );
-
-	/* The list item will be inserted in wake time order. */
-	listSET_LIST_ITEM_VALUE( &( pxCurrentCoRoutine->xGenericListItem ), xTimeToWake );
-
-	if( xTimeToWake < xCoRoutineTickCount )
-	{
-		/* Wake time has overflowed.  Place this item in the
-		overflow list. */
-		vListInsert( ( List_t * ) pxOverflowDelayedCoRoutineList, ( ListItem_t * ) &( pxCurrentCoRoutine->xGenericListItem ) );
-	}
-	else
-	{
-		/* The wake time has not overflowed, so we can use the
-		current block list. */
-		vListInsert( ( List_t * ) pxDelayedCoRoutineList, ( ListItem_t * ) &( pxCurrentCoRoutine->xGenericListItem ) );
-	}
-
-	if( pxEventList )
-	{
-		/* Also add the co-routine to an event list.  If this is done then the
-		function must be called with interrupts disabled. */
-		vListInsert( pxEventList, &( pxCurrentCoRoutine->xEventListItem ) );
-	}
-}
-/*-----------------------------------------------------------*/
-
-static void prvCheckPendingReadyList( void )
-{
-	/* Are there any co-routines waiting to get moved to the ready list?  These
-	are co-routines that have been readied by an ISR.  The ISR cannot access
-	the	ready lists itself. */
-	while( listLIST_IS_EMPTY( &xPendingReadyCoRoutineList ) == pdFALSE )
-	{
-		CRCB_t *pxUnblockedCRCB;
-
-		/* The pending ready list can be accessed by an ISR. */
-		portDISABLE_INTERRUPTS();
-		{
-			pxUnblockedCRCB = ( CRCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyCoRoutineList) );
-			( void ) uxListRemove( &( pxUnblockedCRCB->xEventListItem ) );
-		}
-		portENABLE_INTERRUPTS();
-
-		( void ) uxListRemove( &( pxUnblockedCRCB->xGenericListItem ) );
-		prvAddCoRoutineToReadyQueue( pxUnblockedCRCB );
-	}
-}
-/*-----------------------------------------------------------*/
-
-static void prvCheckDelayedList( void )
-{
-CRCB_t *pxCRCB;
-
-	xPassedTicks = xTaskGetTickCount() - xLastTickCount;
-	while( xPassedTicks )
-	{
-		xCoRoutineTickCount++;
-		xPassedTicks--;
-
-		/* If the tick count has overflowed we need to swap the ready lists. */
-		if( xCoRoutineTickCount == 0 )
-		{
-			List_t * pxTemp;
-
-			/* Tick count has overflowed so we need to swap the delay lists.  If there are
-			any items in pxDelayedCoRoutineList here then there is an error! */
-			pxTemp = pxDelayedCoRoutineList;
-			pxDelayedCoRoutineList = pxOverflowDelayedCoRoutineList;
-			pxOverflowDelayedCoRoutineList = pxTemp;
-		}
-
-		/* See if this tick has made a timeout expire. */
-		while( listLIST_IS_EMPTY( pxDelayedCoRoutineList ) == pdFALSE )
-		{
-			pxCRCB = ( CRCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList );
-
-			if( xCoRoutineTickCount < listGET_LIST_ITEM_VALUE( &( pxCRCB->xGenericListItem ) ) )
-			{
-				/* Timeout not yet expired. */
-				break;
-			}
-
-			portDISABLE_INTERRUPTS();
-			{
-				/* The event could have occurred just before this critical
-				section.  If this is the case then the generic list item will
-				have been moved to the pending ready list and the following
-				line is still valid.  Also the pvContainer parameter will have
-				been set to NULL so the following lines are also valid. */
-				( void ) uxListRemove( &( pxCRCB->xGenericListItem ) );
-
-				/* Is the co-routine waiting on an event also? */
-				if( pxCRCB->xEventListItem.pvContainer )
-				{
-					( void ) uxListRemove( &( pxCRCB->xEventListItem ) );
-				}
-			}
-			portENABLE_INTERRUPTS();
-
-			prvAddCoRoutineToReadyQueue( pxCRCB );
-		}
-	}
-
-	xLastTickCount = xCoRoutineTickCount;
-}
-/*-----------------------------------------------------------*/
-
-void vCoRoutineSchedule( void )
-{
-	/* See if any co-routines readied by events need moving to the ready lists. */
-	prvCheckPendingReadyList();
-
-	/* See if any delayed co-routines have timed out. */
-	prvCheckDelayedList();
-
-	/* Find the highest priority queue that contains ready co-routines. */
-	while( listLIST_IS_EMPTY( &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) ) )
-	{
-		if( uxTopCoRoutineReadyPriority == 0 )
-		{
-			/* No more co-routines to check. */
-			return;
-		}
-		--uxTopCoRoutineReadyPriority;
-	}
-
-	/* listGET_OWNER_OF_NEXT_ENTRY walks through the list, so the co-routines
-	 of the	same priority get an equal share of the processor time. */
-	listGET_OWNER_OF_NEXT_ENTRY( pxCurrentCoRoutine, &( pxReadyCoRoutineLists[ uxTopCoRoutineReadyPriority ] ) );
-
-	/* Call the co-routine. */
-	( pxCurrentCoRoutine->pxCoRoutineFunction )( pxCurrentCoRoutine, pxCurrentCoRoutine->uxIndex );
-
-	return;
-}
-/*-----------------------------------------------------------*/
-
-static void prvInitialiseCoRoutineLists( void )
-{
-UBaseType_t uxPriority;
-
-	for( uxPriority = 0; uxPriority < configMAX_CO_ROUTINE_PRIORITIES; uxPriority++ )
-	{
-		vListInitialise( ( List_t * ) &( pxReadyCoRoutineLists[ uxPriority ] ) );
-	}
-
-	vListInitialise( ( List_t * ) &xDelayedCoRoutineList1 );
-	vListInitialise( ( List_t * ) &xDelayedCoRoutineList2 );
-	vListInitialise( ( List_t * ) &xPendingReadyCoRoutineList );
-
-	/* Start with pxDelayedCoRoutineList using list1 and the
-	pxOverflowDelayedCoRoutineList using list2. */
-	pxDelayedCoRoutineList = &xDelayedCoRoutineList1;
-	pxOverflowDelayedCoRoutineList = &xDelayedCoRoutineList2;
-}
-/*-----------------------------------------------------------*/
-
-BaseType_t xCoRoutineRemoveFromEventList( const List_t *pxEventList )
-{
-CRCB_t *pxUnblockedCRCB;
-BaseType_t xReturn;
-
-	/* This function is called from within an interrupt.  It can only access
-	event lists and the pending ready list.  This function assumes that a
-	check has already been made to ensure pxEventList is not empty. */
-	pxUnblockedCRCB = ( CRCB_t * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
-	( void ) uxListRemove( &( pxUnblockedCRCB->xEventListItem ) );
-	vListInsertEnd( ( List_t * ) &( xPendingReadyCoRoutineList ), &( pxUnblockedCRCB->xEventListItem ) );
-
-	if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )
-	{
-		xReturn = pdTRUE;
-	}
-	else
-	{
-		xReturn = pdFALSE;
-	}
-
-	return xReturn;
-}
-
-#endif /* configUSE_CO_ROUTINES == 0 */
-