FreeRTOS_on_mbed_v1 - Please see my note book http://mbed.org/users/ken…

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Please see my note book http://mbed.org/users/kenjiArai/notebook/freertos-on-mbed-board-with-mbed-cloud-ide--never-/

This is too old.
Below is another FreeRTOS on mbed.
http://developer.mbed.org/users/rgrover1/code/FreeRTOS/
I don't know it works well or not.
I have not evaluated it.

FreeRTOS/Source/list.c@0:d4960fcea8ff, 2011-01-01 (annotated)

Committer:: kenjiArai
Date:: Sat Jan 01 11:17:45 2011 +0000
Revision:: 0:d4960fcea8ff

Who changed what in which revision?

User	Revision	Line number	New contents of line
kenjiArai	0:d4960fcea8ff	1	/*
kenjiArai	0:d4960fcea8ff	2	FreeRTOS V6.0.3 - Copyright (C) 2010 Real Time Engineers Ltd.
kenjiArai	0:d4960fcea8ff	3
kenjiArai	0:d4960fcea8ff	4	***************************************************************************
kenjiArai	0:d4960fcea8ff	5	* *
kenjiArai	0:d4960fcea8ff	6	* If you are: *
kenjiArai	0:d4960fcea8ff	7	* *
kenjiArai	0:d4960fcea8ff	8	* + New to FreeRTOS, *
kenjiArai	0:d4960fcea8ff	9	* + Wanting to learn FreeRTOS or multitasking in general quickly *
kenjiArai	0:d4960fcea8ff	10	* + Looking for basic training, *
kenjiArai	0:d4960fcea8ff	11	* + Wanting to improve your FreeRTOS skills and productivity *
kenjiArai	0:d4960fcea8ff	12	* *
kenjiArai	0:d4960fcea8ff	13	* then take a look at the FreeRTOS eBook *
kenjiArai	0:d4960fcea8ff	14	* *
kenjiArai	0:d4960fcea8ff	15	* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
kenjiArai	0:d4960fcea8ff	16	* http://www.FreeRTOS.org/Documentation *
kenjiArai	0:d4960fcea8ff	17	* *
kenjiArai	0:d4960fcea8ff	18	* A pdf reference manual is also available. Both are usually delivered *
kenjiArai	0:d4960fcea8ff	19	* to your inbox within 20 minutes to two hours when purchased between 8am *
kenjiArai	0:d4960fcea8ff	20	* and 8pm GMT (although please allow up to 24 hours in case of *
kenjiArai	0:d4960fcea8ff	21	* exceptional circumstances). Thank you for your support! *
kenjiArai	0:d4960fcea8ff	22	* *
kenjiArai	0:d4960fcea8ff	23	***************************************************************************
kenjiArai	0:d4960fcea8ff	24
kenjiArai	0:d4960fcea8ff	25	This file is part of the FreeRTOS distribution.
kenjiArai	0:d4960fcea8ff	26
kenjiArai	0:d4960fcea8ff	27	FreeRTOS is free software; you can redistribute it and/or modify it under
kenjiArai	0:d4960fcea8ff	28	the terms of the GNU General Public License (version 2) as published by the
kenjiArai	0:d4960fcea8ff	29	Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
kenjiArai	0:d4960fcea8ff	30	*NOTE* The exception to the GPL is included to allow you to distribute
kenjiArai	0:d4960fcea8ff	31	a combined work that includes FreeRTOS without being obliged to provide the
kenjiArai	0:d4960fcea8ff	32	source code for proprietary components outside of the FreeRTOS kernel.
kenjiArai	0:d4960fcea8ff	33	FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
kenjiArai	0:d4960fcea8ff	34	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
kenjiArai	0:d4960fcea8ff	35	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
kenjiArai	0:d4960fcea8ff	36	more details. You should have received a copy of the GNU General Public
kenjiArai	0:d4960fcea8ff	37	License and the FreeRTOS license exception along with FreeRTOS; if not it
kenjiArai	0:d4960fcea8ff	38	can be viewed here: http://www.freertos.org/a00114.html and also obtained
kenjiArai	0:d4960fcea8ff	39	by writing to Richard Barry, contact details for whom are available on the
kenjiArai	0:d4960fcea8ff	40	FreeRTOS WEB site.
kenjiArai	0:d4960fcea8ff	41
kenjiArai	0:d4960fcea8ff	42	1 tab == 4 spaces!
kenjiArai	0:d4960fcea8ff	43
kenjiArai	0:d4960fcea8ff	44	http://www.FreeRTOS.org - Documentation, latest information, license and
kenjiArai	0:d4960fcea8ff	45	contact details.
kenjiArai	0:d4960fcea8ff	46
kenjiArai	0:d4960fcea8ff	47	http://www.SafeRTOS.com - A version that is certified for use in safety
kenjiArai	0:d4960fcea8ff	48	critical systems.
kenjiArai	0:d4960fcea8ff	49
kenjiArai	0:d4960fcea8ff	50	http://www.OpenRTOS.com - Commercial support, development, porting,
kenjiArai	0:d4960fcea8ff	51	licensing and training services.
kenjiArai	0:d4960fcea8ff	52	*/
kenjiArai	0:d4960fcea8ff	53
kenjiArai	0:d4960fcea8ff	54
kenjiArai	0:d4960fcea8ff	55	#include "stdlib.h"
kenjiArai	0:d4960fcea8ff	56	#include "./FreeRTOS/Source/include/FreeRTOS.h"
kenjiArai	0:d4960fcea8ff	57	#include "./FreeRTOS/Source/include/list.h"
kenjiArai	0:d4960fcea8ff	58
kenjiArai	0:d4960fcea8ff	59	/*-----------------------------------------------------------
kenjiArai	0:d4960fcea8ff	60	* PUBLIC LIST API documented in list.h
kenjiArai	0:d4960fcea8ff	61	----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	62
kenjiArai	0:d4960fcea8ff	63	void vListInitialise( xList *pxList )
kenjiArai	0:d4960fcea8ff	64	{
kenjiArai	0:d4960fcea8ff	65	/* The list structure contains a list item which is used to mark the
kenjiArai	0:d4960fcea8ff	66	end of the list. To initialise the list the list end is inserted
kenjiArai	0:d4960fcea8ff	67	as the only list entry. */
kenjiArai	0:d4960fcea8ff	68	pxList->pxIndex = ( xListItem * ) &( pxList->xListEnd );
kenjiArai	0:d4960fcea8ff	69
kenjiArai	0:d4960fcea8ff	70	/* The list end value is the highest possible value in the list to
kenjiArai	0:d4960fcea8ff	71	ensure it remains at the end of the list. */
kenjiArai	0:d4960fcea8ff	72	pxList->xListEnd.xItemValue = portMAX_DELAY;
kenjiArai	0:d4960fcea8ff	73
kenjiArai	0:d4960fcea8ff	74	/* The list end next and previous pointers point to itself so we know
kenjiArai	0:d4960fcea8ff	75	when the list is empty. */
kenjiArai	0:d4960fcea8ff	76	pxList->xListEnd.pxNext = ( xListItem * ) &( pxList->xListEnd );
kenjiArai	0:d4960fcea8ff	77	pxList->xListEnd.pxPrevious = ( xListItem * ) &( pxList->xListEnd );
kenjiArai	0:d4960fcea8ff	78
kenjiArai	0:d4960fcea8ff	79	pxList->uxNumberOfItems = 0;
kenjiArai	0:d4960fcea8ff	80	}
kenjiArai	0:d4960fcea8ff	81	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	82
kenjiArai	0:d4960fcea8ff	83	void vListInitialiseItem( xListItem *pxItem )
kenjiArai	0:d4960fcea8ff	84	{
kenjiArai	0:d4960fcea8ff	85	/* Make sure the list item is not recorded as being on a list. */
kenjiArai	0:d4960fcea8ff	86	pxItem->pvContainer = NULL;
kenjiArai	0:d4960fcea8ff	87	}
kenjiArai	0:d4960fcea8ff	88	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	89
kenjiArai	0:d4960fcea8ff	90	void vListInsertEnd( xList pxList, xListItem pxNewListItem )
kenjiArai	0:d4960fcea8ff	91	{
kenjiArai	0:d4960fcea8ff	92	volatile xListItem * pxIndex;
kenjiArai	0:d4960fcea8ff	93
kenjiArai	0:d4960fcea8ff	94	/* Insert a new list item into pxList, but rather than sort the list,
kenjiArai	0:d4960fcea8ff	95	makes the new list item the last item to be removed by a call to
kenjiArai	0:d4960fcea8ff	96	pvListGetOwnerOfNextEntry. This means it has to be the item pointed to by
kenjiArai	0:d4960fcea8ff	97	the pxIndex member. */
kenjiArai	0:d4960fcea8ff	98	pxIndex = pxList->pxIndex;
kenjiArai	0:d4960fcea8ff	99
kenjiArai	0:d4960fcea8ff	100	pxNewListItem->pxNext = pxIndex->pxNext;
kenjiArai	0:d4960fcea8ff	101	pxNewListItem->pxPrevious = pxList->pxIndex;
kenjiArai	0:d4960fcea8ff	102	pxIndex->pxNext->pxPrevious = ( volatile xListItem * ) pxNewListItem;
kenjiArai	0:d4960fcea8ff	103	pxIndex->pxNext = ( volatile xListItem * ) pxNewListItem;
kenjiArai	0:d4960fcea8ff	104	pxList->pxIndex = ( volatile xListItem * ) pxNewListItem;
kenjiArai	0:d4960fcea8ff	105
kenjiArai	0:d4960fcea8ff	106	/* Remember which list the item is in. */
kenjiArai	0:d4960fcea8ff	107	pxNewListItem->pvContainer = ( void * ) pxList;
kenjiArai	0:d4960fcea8ff	108
kenjiArai	0:d4960fcea8ff	109	( pxList->uxNumberOfItems )++;
kenjiArai	0:d4960fcea8ff	110	}
kenjiArai	0:d4960fcea8ff	111	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	112
kenjiArai	0:d4960fcea8ff	113	void vListInsert( xList pxList, xListItem pxNewListItem )
kenjiArai	0:d4960fcea8ff	114	{
kenjiArai	0:d4960fcea8ff	115	volatile xListItem *pxIterator;
kenjiArai	0:d4960fcea8ff	116	portTickType xValueOfInsertion;
kenjiArai	0:d4960fcea8ff	117
kenjiArai	0:d4960fcea8ff	118	/* Insert the new list item into the list, sorted in ulListItem order. */
kenjiArai	0:d4960fcea8ff	119	xValueOfInsertion = pxNewListItem->xItemValue;
kenjiArai	0:d4960fcea8ff	120
kenjiArai	0:d4960fcea8ff	121	/* If the list already contains a list item with the same item value then
kenjiArai	0:d4960fcea8ff	122	the new list item should be placed after it. This ensures that TCB's which
kenjiArai	0:d4960fcea8ff	123	are stored in ready lists (all of which have the same ulListItem value)
kenjiArai	0:d4960fcea8ff	124	get an equal share of the CPU. However, if the xItemValue is the same as
kenjiArai	0:d4960fcea8ff	125	the back marker the iteration loop below will not end. This means we need
kenjiArai	0:d4960fcea8ff	126	to guard against this by checking the value first and modifying the
kenjiArai	0:d4960fcea8ff	127	algorithm slightly if necessary. */
kenjiArai	0:d4960fcea8ff	128	if( xValueOfInsertion == portMAX_DELAY )
kenjiArai	0:d4960fcea8ff	129	{
kenjiArai	0:d4960fcea8ff	130	pxIterator = pxList->xListEnd.pxPrevious;
kenjiArai	0:d4960fcea8ff	131	}
kenjiArai	0:d4960fcea8ff	132	else
kenjiArai	0:d4960fcea8ff	133	{
kenjiArai	0:d4960fcea8ff	134	/* * NOTE *********************************************************
kenjiArai	0:d4960fcea8ff	135	If you find your application is crashing here then likely causes are:
kenjiArai	0:d4960fcea8ff	136	1) Stack overflow -
kenjiArai	0:d4960fcea8ff	137	see http://www.freertos.org/Stacks-and-stack-overflow-checking.html
kenjiArai	0:d4960fcea8ff	138	2) Incorrect interrupt priority assignment, especially on Cortex M3
kenjiArai	0:d4960fcea8ff	139	parts where numerically high priority values denote low actual
kenjiArai	0:d4960fcea8ff	140	interrupt priories, which can seem counter intuitive. See
kenjiArai	0:d4960fcea8ff	141	configMAX_SYSCALL_INTERRUPT_PRIORITY on http://www.freertos.org/a00110.html
kenjiArai	0:d4960fcea8ff	142	3) Calling an API function from within a critical section or when
kenjiArai	0:d4960fcea8ff	143	the scheduler is suspended.
kenjiArai	0:d4960fcea8ff	144	4) Using a queue or semaphore before it has been initialised or
kenjiArai	0:d4960fcea8ff	145	before the scheduler has been started (are interrupts firing
kenjiArai	0:d4960fcea8ff	146	before vTaskStartScheduler() has been called?).
kenjiArai	0:d4960fcea8ff	147	See http://www.freertos.org/FAQHelp.html for more tips.
kenjiArai	0:d4960fcea8ff	148	**********************************************************************/
kenjiArai	0:d4960fcea8ff	149
kenjiArai	0:d4960fcea8ff	150	for( pxIterator = ( xListItem * ) &( pxList->xListEnd ); pxIterator->pxNext->xItemValue <= xValueOfInsertion; pxIterator = pxIterator->pxNext )
kenjiArai	0:d4960fcea8ff	151	{
kenjiArai	0:d4960fcea8ff	152	/* There is nothing to do here, we are just iterating to the
kenjiArai	0:d4960fcea8ff	153	wanted insertion position. */
kenjiArai	0:d4960fcea8ff	154	}
kenjiArai	0:d4960fcea8ff	155	}
kenjiArai	0:d4960fcea8ff	156
kenjiArai	0:d4960fcea8ff	157	pxNewListItem->pxNext = pxIterator->pxNext;
kenjiArai	0:d4960fcea8ff	158	pxNewListItem->pxNext->pxPrevious = ( volatile xListItem * ) pxNewListItem;
kenjiArai	0:d4960fcea8ff	159	pxNewListItem->pxPrevious = pxIterator;
kenjiArai	0:d4960fcea8ff	160	pxIterator->pxNext = ( volatile xListItem * ) pxNewListItem;
kenjiArai	0:d4960fcea8ff	161
kenjiArai	0:d4960fcea8ff	162	/* Remember which list the item is in. This allows fast removal of the
kenjiArai	0:d4960fcea8ff	163	item later. */
kenjiArai	0:d4960fcea8ff	164	pxNewListItem->pvContainer = ( void * ) pxList;
kenjiArai	0:d4960fcea8ff	165
kenjiArai	0:d4960fcea8ff	166	( pxList->uxNumberOfItems )++;
kenjiArai	0:d4960fcea8ff	167	}
kenjiArai	0:d4960fcea8ff	168	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	169
kenjiArai	0:d4960fcea8ff	170	void vListRemove( xListItem *pxItemToRemove )
kenjiArai	0:d4960fcea8ff	171	{
kenjiArai	0:d4960fcea8ff	172	xList * pxList;
kenjiArai	0:d4960fcea8ff	173
kenjiArai	0:d4960fcea8ff	174	pxItemToRemove->pxNext->pxPrevious = pxItemToRemove->pxPrevious;
kenjiArai	0:d4960fcea8ff	175	pxItemToRemove->pxPrevious->pxNext = pxItemToRemove->pxNext;
kenjiArai	0:d4960fcea8ff	176
kenjiArai	0:d4960fcea8ff	177	/* The list item knows which list it is in. Obtain the list from the list
kenjiArai	0:d4960fcea8ff	178	item. */
kenjiArai	0:d4960fcea8ff	179	pxList = ( xList * ) pxItemToRemove->pvContainer;
kenjiArai	0:d4960fcea8ff	180
kenjiArai	0:d4960fcea8ff	181	/* Make sure the index is left pointing to a valid item. */
kenjiArai	0:d4960fcea8ff	182	if( pxList->pxIndex == pxItemToRemove )
kenjiArai	0:d4960fcea8ff	183	{
kenjiArai	0:d4960fcea8ff	184	pxList->pxIndex = pxItemToRemove->pxPrevious;
kenjiArai	0:d4960fcea8ff	185	}
kenjiArai	0:d4960fcea8ff	186
kenjiArai	0:d4960fcea8ff	187	pxItemToRemove->pvContainer = NULL;
kenjiArai	0:d4960fcea8ff	188	( pxList->uxNumberOfItems )--;
kenjiArai	0:d4960fcea8ff	189	}
kenjiArai	0:d4960fcea8ff	190	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	191

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Type:	Program
Created:	01 Jan 2011
Imports:	289
Forks:	1
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	14

FreeRTOS/Source/list.c@0:d4960fcea8ff, 2011-01-01 (annotated)

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