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git-svn-id: file:///srv/dev-disk-by-uuid-17e88007-4d0c-45e0-8757-cacfcc458630/repositories/svn/Diplomarbeit@113 9fe90eed-be63-e94b-8204-d34ff4c2ff93
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Matthias
2009-01-12 08:38:14 +00:00
parent 4e45654a5f
commit 6cc948eef8
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Tester/SW/Eclipse/lib/FreeRTOS/Source/.cproject
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Tester/SW/Eclipse/lib/FreeRTOS/Source/.project
+82
View File
@@ -0,0 +1,82 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>FreeRTOS</name>
<comment></comment>
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Tester/SW/Eclipse/lib/FreeRTOS/Source/croutine.c
+346
View File
@@ -0,0 +1,346 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
#include "FreeRTOS.h"
#include "task.h"
#include "croutine.h"
/* Lists for ready and blocked co-routines. --------------------*/
static xList pxReadyCoRoutineLists[ configMAX_CO_ROUTINE_PRIORITIES ]; /*< Prioritised ready co-routines. */
static xList xDelayedCoRoutineList1; /*< Delayed co-routines. */
static xList xDelayedCoRoutineList2; /*< Delayed co-routines (two lists are used - one for delays that have overflowed the current tick count. */
static xList * pxDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used. */
static xList * pxOverflowDelayedCoRoutineList; /*< Points to the delayed co-routine list currently being used to hold co-routines that have overflowed the current tick count. */
static xList xPendingReadyList; /*< 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. --------------------------------*/
corCRCB * pxCurrentCoRoutine = NULL;
static unsigned portBASE_TYPE uxTopCoRoutineReadyPriority = 0;
static portTickType xCoRoutineTickCount = 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( ( xList * ) &( 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 inline 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 inline void prvCheckDelayedList( void );
/*-----------------------------------------------------------*/
signed portBASE_TYPE xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, unsigned portBASE_TYPE uxPriority, unsigned portBASE_TYPE uxIndex )
{
signed portBASE_TYPE xReturn;
corCRCB *pxCoRoutine;
/* Allocate the memory that will store the co-routine control block. */
pxCoRoutine = ( corCRCB * ) pvPortMalloc( sizeof( corCRCB ) );
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 xListItem.
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 ), configMAX_PRIORITIES - ( portTickType ) 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( portTickType xTicksToDelay, xList *pxEventList )
{
portTickType 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. */
vListRemove( ( xListItem * ) &( 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( ( xList * ) pxOverflowDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
}
else
{
/* The wake time has not overflowed, so we can use the
current block list. */
vListInsert( ( xList * ) pxDelayedCoRoutineList, ( xListItem * ) &( 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 inline 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( &xPendingReadyList ) )
{
corCRCB *pxUnblockedCRCB;
/* The pending ready list can be accessed by an ISR. */
portDISABLE_INTERRUPTS();
{
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyList) );
vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
}
portENABLE_INTERRUPTS();
vListRemove( &( pxUnblockedCRCB->xGenericListItem ) );
prvAddCoRoutineToReadyQueue( pxUnblockedCRCB );
}
}
/*-----------------------------------------------------------*/
static inline void prvCheckDelayedList( void )
{
static portTickType xLastTickCount, xPassedTicks;
corCRCB *pxCRCB;
xPassedTicks = xTaskGetTickCount() - xLastTickCount;
while( xPassedTicks )
{
xCoRoutineTickCount++;
xPassedTicks--;
/* If the tick count has overflowed we need to swap the ready lists. */
if( xCoRoutineTickCount == 0 )
{
xList * 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( ( pxCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxDelayedCoRoutineList ) ) != NULL )
{
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. */
vListRemove( &( pxCRCB->xGenericListItem ) );
/* Is the co-routine waiting on an event also? */
if( pxCRCB->xEventListItem.pvContainer )
{
vListRemove( &( 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 )
{
unsigned portBASE_TYPE uxPriority;
for( uxPriority = 0; uxPriority < configMAX_CO_ROUTINE_PRIORITIES; uxPriority++ )
{
vListInitialise( ( xList * ) &( pxReadyCoRoutineLists[ uxPriority ] ) );
}
vListInitialise( ( xList * ) &xDelayedCoRoutineList1 );
vListInitialise( ( xList * ) &xDelayedCoRoutineList2 );
vListInitialise( ( xList * ) &xPendingReadyList );
/* Start with pxDelayedCoRoutineList using list1 and the
pxOverflowDelayedCoRoutineList using list2. */
pxDelayedCoRoutineList = &xDelayedCoRoutineList1;
pxOverflowDelayedCoRoutineList = &xDelayedCoRoutineList2;
}
/*-----------------------------------------------------------*/
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList )
{
corCRCB *pxUnblockedCRCB;
signed portBASE_TYPE xReturn;
/* This function is called from within an interrupt. It can only access
event lists and the pending ready list. */
pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
vListInsertEnd( ( xList * ) &( xPendingReadyList ), &( pxUnblockedCRCB->xEventListItem ) );
if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )
{
xReturn = pdTRUE;
}
else
{
xReturn = pdFALSE;
}
return xReturn;
}
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/FreeRTOS.h
+135
View File
@@ -0,0 +1,135 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
#ifndef INC_FREERTOS_H
#define INC_FREERTOS_H
/*
* Include the generic headers required for the FreeRTOS port being used.
*/
#include <stddef.h>
/* Basic FreeRTOS definitions. */
#include "projdefs.h"
/* Application specific configuration options. */
#include "FreeRTOSConfig.h"
/* Definitions specific to the port being used. */
#include "portable.h"
// Memory allocation of RTOS is used in application
void *pvPortMalloc( size_t xWantedSize );
void vPortFree( void *pv );
/*
* Check all the required application specific macros have been defined.
* These macros are application specific and (as downloaded) are defined
* within FreeRTOSConfig.h.
*/
#ifndef configUSE_PREEMPTION
#error Missing definition: configUSE_PREEMPTION should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_IDLE_HOOK
#error Missing definition: configUSE_IDLE_HOOK should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_TICK_HOOK
#error Missing definition: configUSE_TICK_HOOK should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_CO_ROUTINES
#error Missing definition: configUSE_CO_ROUTINES should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskPrioritySet
#error Missing definition: INCLUDE_vTaskPrioritySet should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_uxTaskPriorityGet
#error Missing definition: INCLUDE_uxTaskPriorityGet should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskDelete
#error Missing definition: INCLUDE_vTaskDelete should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskCleanUpResources
#error Missing definition: INCLUDE_vTaskCleanUpResources should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskSuspend
#error Missing definition: INCLUDE_vTaskSuspend should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskDelayUntil
#error Missing definition: INCLUDE_vTaskDelayUntil should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef INCLUDE_vTaskDelay
#error Missing definition: INCLUDE_vTaskDelay should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_16_BIT_TICKS
#error Missing definition: configUSE_16_BIT_TICKS should be defined in FreeRTOSConfig.h as either 1 or 0. See the Configuration section of the FreeRTOS API documentation for details.
#endif
#ifndef configUSE_MUTEXES
#define configUSE_MUTEXES 0
#endif
#if ( configUSE_MUTEXES == 1 )
/* xTaskGetCurrentTaskHandle is used by the priority inheritance mechanism
within the mutex implementation so must be available if mutexes are used. */
#undef INCLUDE_xTaskGetCurrentTaskHandle
#define INCLUDE_xTaskGetCurrentTaskHandle 1
#else
#ifndef INCLUDE_xTaskGetCurrentTaskHandle
#define INCLUDE_xTaskGetCurrentTaskHandle 0
#endif
#endif
#endif /* INC_FREERTOS_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/croutine.h
+724
View File
@@ -0,0 +1,724 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
#ifndef CO_ROUTINE_H
#define CO_ROUTINE_H
#include "list.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Used to hide the implementation of the co-routine control block. The
control block structure however has to be included in the header due to
the macro implementation of the co-routine functionality. */
typedef void * xCoRoutineHandle;
/* Defines the prototype to which co-routine functions must conform. */
typedef void (*crCOROUTINE_CODE)( xCoRoutineHandle, unsigned portBASE_TYPE );
typedef struct corCoRoutineControlBlock
{
crCOROUTINE_CODE pxCoRoutineFunction;
xListItem xGenericListItem; /*< List item used to place the CRCB in ready and blocked queues. */
xListItem xEventListItem; /*< List item used to place the CRCB in event lists. */
unsigned portBASE_TYPE uxPriority; /*< The priority of the co-routine in relation to other co-routines. */
unsigned portBASE_TYPE uxIndex; /*< Used to distinguish between co-routines when multiple co-routines use the same co-routine function. */
unsigned portSHORT uxState; /*< Used internally by the co-routine implementation. */
} corCRCB; /* Co-routine control block. Note must be identical in size down to uxPriority with tskTCB. */
/**
* croutine. h
*<pre>
portBASE_TYPE xCoRoutineCreate(
crCOROUTINE_CODE pxCoRoutineCode,
unsigned portBASE_TYPE uxPriority,
unsigned portBASE_TYPE uxIndex
);</pre>
*
* Create a new co-routine and add it to the list of co-routines that are
* ready to run.
*
* @param pxCoRoutineCode Pointer to the co-routine function. Co-routine
* functions require special syntax - see the co-routine section of the WEB
* documentation for more information.
*
* @param uxPriority The priority with respect to other co-routines at which
* the co-routine will run.
*
* @param uxIndex Used to distinguish between different co-routines that
* execute the same function. See the example below and the co-routine section
* of the WEB documentation for further information.
*
* @return pdPASS if the co-routine was successfully created and added to a ready
* list, otherwise an error code defined with ProjDefs.h.
*
* Example usage:
<pre>
// Co-routine to be created.
void vFlashCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
// This may not be necessary for const variables.
static const char cLedToFlash[ 2 ] = { 5, 6 };
static const portTickType xTimeToDelay[ 2 ] = { 200, 400 };
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// This co-routine just delays for a fixed period, then toggles
// an LED. Two co-routines are created using this function, so
// the uxIndex parameter is used to tell the co-routine which
// LED to flash and how long to delay. This assumes xQueue has
// already been created.
vParTestToggleLED( cLedToFlash[ uxIndex ] );
crDELAY( xHandle, uxFlashRates[ uxIndex ] );
}
// Must end every co-routine with a call to crEND();
crEND();
}
// Function that creates two co-routines.
void vOtherFunction( void )
{
unsigned char ucParameterToPass;
xTaskHandle xHandle;
// Create two co-routines at priority 0. The first is given index 0
// so (from the code above) toggles LED 5 every 200 ticks. The second
// is given index 1 so toggles LED 6 every 400 ticks.
for( uxIndex = 0; uxIndex < 2; uxIndex++ )
{
xCoRoutineCreate( vFlashCoRoutine, 0, uxIndex );
}
}
</pre>
* \defgroup xCoRoutineCreate xCoRoutineCreate
* \ingroup Tasks
*/
signed portBASE_TYPE xCoRoutineCreate( crCOROUTINE_CODE pxCoRoutineCode, unsigned portBASE_TYPE uxPriority, unsigned portBASE_TYPE uxIndex );
/**
* croutine. h
*<pre>
void vCoRoutineSchedule( void );</pre>
*
* Run a co-routine.
*
* vCoRoutineSchedule() executes the highest priority co-routine that is able
* to run. The co-routine will execute until it either blocks, yields or is
* preempted by a task. Co-routines execute cooperatively so one
* co-routine cannot be preempted by another, but can be preempted by a task.
*
* If an application comprises of both tasks and co-routines then
* vCoRoutineSchedule should be called from the idle task (in an idle task
* hook).
*
* Example usage:
<pre>
// This idle task hook will schedule a co-routine each time it is called.
// The rest of the idle task will execute between co-routine calls.
void vApplicationIdleHook( void )
{
vCoRoutineSchedule();
}
// Alternatively, if you do not require any other part of the idle task to
// execute, the idle task hook can call vCoRoutineScheduler() within an
// infinite loop.
void vApplicationIdleHook( void )
{
for( ;; )
{
vCoRoutineSchedule();
}
}
</pre>
* \defgroup vCoRoutineSchedule vCoRoutineSchedule
* \ingroup Tasks
*/
void vCoRoutineSchedule( void );
/**
* croutine. h
* <pre>
crSTART( xCoRoutineHandle xHandle );</pre>
*
* This macro MUST always be called at the start of a co-routine function.
*
* Example usage:
<pre>
// Co-routine to be created.
void vACoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static portLONG ulAVariable;
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// Co-routine functionality goes here.
}
// Must end every co-routine with a call to crEND();
crEND();
}</pre>
* \defgroup crSTART crSTART
* \ingroup Tasks
*/
#define crSTART( pxCRCB ) switch( ( ( corCRCB * )pxCRCB )->uxState ) { case 0:
/**
* croutine. h
* <pre>
crEND();</pre>
*
* This macro MUST always be called at the end of a co-routine function.
*
* Example usage:
<pre>
// Co-routine to be created.
void vACoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static portLONG ulAVariable;
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// Co-routine functionality goes here.
}
// Must end every co-routine with a call to crEND();
crEND();
}</pre>
* \defgroup crSTART crSTART
* \ingroup Tasks
*/
#define crEND() }
/*
* These macros are intended for internal use by the co-routine implementation
* only. The macros should not be used directly by application writers.
*/
#define crSET_STATE0( xHandle ) ( ( corCRCB * )xHandle)->uxState = (__LINE__ * 2); return; case (__LINE__ * 2):
#define crSET_STATE1( xHandle ) ( ( corCRCB * )xHandle)->uxState = ((__LINE__ * 2)+1); return; case ((__LINE__ * 2)+1):
/**
* croutine. h
*<pre>
crDELAY( xCoRoutineHandle xHandle, portTickType xTicksToDelay );</pre>
*
* Delay a co-routine for a fixed period of time.
*
* crDELAY can only be called from the co-routine function itself - not
* from within a function called by the co-routine function. This is because
* co-routines do not maintain their own stack.
*
* @param xHandle The handle of the co-routine to delay. This is the xHandle
* parameter of the co-routine function.
*
* @param xTickToDelay The number of ticks that the co-routine should delay
* for. The actual amount of time this equates to is defined by
* configTICK_RATE_HZ (set in FreeRTOSConfig.h). The constant portTICK_RATE_MS
* can be used to convert ticks to milliseconds.
*
* Example usage:
<pre>
// Co-routine to be created.
void vACoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
// This may not be necessary for const variables.
// We are to delay for 200ms.
static const xTickType xDelayTime = 200 / portTICK_RATE_MS;
// Must start every co-routine with a call to crSTART();
crSTART( xHandle );
for( ;; )
{
// Delay for 200ms.
crDELAY( xHandle, xDelayTime );
// Do something here.
}
// Must end every co-routine with a call to crEND();
crEND();
}</pre>
* \defgroup crDELAY crDELAY
* \ingroup Tasks
*/
#define crDELAY( xHandle, xTicksToDelay ) \
if( xTicksToDelay > 0 ) \
{ \
vCoRoutineAddToDelayedList( xTicksToDelay, NULL ); \
} \
crSET_STATE0( xHandle );
/**
* <pre>
crQUEUE_SEND(
xCoRoutineHandle xHandle,
xQueueHandle pxQueue,
void *pvItemToQueue,
portTickType xTicksToWait,
portBASE_TYPE *pxResult
)</pre>
*
* The macro's crQUEUE_SEND() and crQUEUE_RECEIVE() are the co-routine
* equivalent to the xQueueSend() and xQueueReceive() functions used by tasks.
*
* crQUEUE_SEND and crQUEUE_RECEIVE can only be used from a co-routine whereas
* xQueueSend() and xQueueReceive() can only be used from tasks.
*
* crQUEUE_SEND can only be called from the co-routine function itself - not
* from within a function called by the co-routine function. This is because
* co-routines do not maintain their own stack.
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xHandle The handle of the calling co-routine. This is the xHandle
* parameter of the co-routine function.
*
* @param pxQueue The handle of the queue on which the data will be posted.
* The handle is obtained as the return value when the queue is created using
* the xQueueCreate() API function.
*
* @param pvItemToQueue A pointer to the data being posted onto the queue.
* The number of bytes of each queued item is specified when the queue is
* created. This number of bytes is copied from pvItemToQueue into the queue
* itself.
*
* @param xTickToDelay The number of ticks that the co-routine should block
* to wait for space to become available on the queue, should space not be
* available immediately. The actual amount of time this equates to is defined
* by configTICK_RATE_HZ (set in FreeRTOSConfig.h). The constant
* portTICK_RATE_MS can be used to convert ticks to milliseconds (see example
* below).
*
* @param pxResult The variable pointed to by pxResult will be set to pdPASS if
* data was successfully posted onto the queue, otherwise it will be set to an
* error defined within ProjDefs.h.
*
* Example usage:
<pre>
// Co-routine function that blocks for a fixed period then posts a number onto
// a queue.
static void prvCoRoutineFlashTask( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static portBASE_TYPE xNumberToPost = 0;
static portBASE_TYPE xResult;
// Co-routines must begin with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// This assumes the queue has already been created.
crQUEUE_SEND( xHandle, xCoRoutineQueue, &xNumberToPost, NO_DELAY, &xResult );
if( xResult != pdPASS )
{
// The message was not posted!
}
// Increment the number to be posted onto the queue.
xNumberToPost++;
// Delay for 100 ticks.
crDELAY( xHandle, 100 );
}
// Co-routines must end with a call to crEND().
crEND();
}</pre>
* \defgroup crQUEUE_SEND crQUEUE_SEND
* \ingroup Tasks
*/
#define crQUEUE_SEND( xHandle, pxQueue, pvItemToQueue, xTicksToWait, pxResult ) \
{ \
*pxResult = xQueueCRSend( pxQueue, pvItemToQueue, xTicksToWait ); \
if( *pxResult == errQUEUE_BLOCKED ) \
{ \
crSET_STATE0( xHandle ); \
*pxResult = xQueueCRSend( pxQueue, pvItemToQueue, 0 ); \
} \
if( *pxResult == errQUEUE_YIELD ) \
{ \
crSET_STATE1( xHandle ); \
*pxResult = pdPASS; \
} \
}
/**
* croutine. h
* <pre>
crQUEUE_RECEIVE(
xCoRoutineHandle xHandle,
xQueueHandle pxQueue,
void *pvBuffer,
portTickType xTicksToWait,
portBASE_TYPE *pxResult
)</pre>
*
* The macro's crQUEUE_SEND() and crQUEUE_RECEIVE() are the co-routine
* equivalent to the xQueueSend() and xQueueReceive() functions used by tasks.
*
* crQUEUE_SEND and crQUEUE_RECEIVE can only be used from a co-routine whereas
* xQueueSend() and xQueueReceive() can only be used from tasks.
*
* crQUEUE_RECEIVE can only be called from the co-routine function itself - not
* from within a function called by the co-routine function. This is because
* co-routines do not maintain their own stack.
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xHandle The handle of the calling co-routine. This is the xHandle
* parameter of the co-routine function.
*
* @param pxQueue The handle of the queue from which the data will be received.
* The handle is obtained as the return value when the queue is created using
* the xQueueCreate() API function.
*
* @param pvBuffer The buffer into which the received item is to be copied.
* The number of bytes of each queued item is specified when the queue is
* created. This number of bytes is copied into pvBuffer.
*
* @param xTickToDelay The number of ticks that the co-routine should block
* to wait for data to become available from the queue, should data not be
* available immediately. The actual amount of time this equates to is defined
* by configTICK_RATE_HZ (set in FreeRTOSConfig.h). The constant
* portTICK_RATE_MS can be used to convert ticks to milliseconds (see the
* crQUEUE_SEND example).
*
* @param pxResult The variable pointed to by pxResult will be set to pdPASS if
* data was successfully retrieved from the queue, otherwise it will be set to
* an error code as defined within ProjDefs.h.
*
* Example usage:
<pre>
// A co-routine receives the number of an LED to flash from a queue. It
// blocks on the queue until the number is received.
static void prvCoRoutineFlashWorkTask( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// Variables in co-routines must be declared static if they must maintain value across a blocking call.
static portBASE_TYPE xResult;
static unsigned portBASE_TYPE uxLEDToFlash;
// All co-routines must start with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// Wait for data to become available on the queue.
crQUEUE_RECEIVE( xHandle, xCoRoutineQueue, &uxLEDToFlash, portMAX_DELAY, &xResult );
if( xResult == pdPASS )
{
// We received the LED to flash - flash it!
vParTestToggleLED( uxLEDToFlash );
}
}
crEND();
}</pre>
* \defgroup crQUEUE_RECEIVE crQUEUE_RECEIVE
* \ingroup Tasks
*/
#define crQUEUE_RECEIVE( xHandle, pxQueue, pvBuffer, xTicksToWait, pxResult ) \
{ \
*pxResult = xQueueCRReceive( pxQueue, pvBuffer, xTicksToWait ); \
if( *pxResult == errQUEUE_BLOCKED ) \
{ \
crSET_STATE0( xHandle ); \
*pxResult = xQueueCRReceive( pxQueue, pvBuffer, 0 ); \
} \
if( *pxResult == errQUEUE_YIELD ) \
{ \
crSET_STATE1( xHandle ); \
*pxResult = pdPASS; \
} \
}
/**
* croutine. h
* <pre>
crQUEUE_SEND_FROM_ISR(
xQueueHandle pxQueue,
void *pvItemToQueue,
portBASE_TYPE xCoRoutinePreviouslyWoken
)</pre>
*
* The macro's crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() are the
* co-routine equivalent to the xQueueSendFromISR() and xQueueReceiveFromISR()
* functions used by tasks.
*
* crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() can only be used to
* pass data between a co-routine and and ISR, whereas xQueueSendFromISR() and
* xQueueReceiveFromISR() can only be used to pass data between a task and and
* ISR.
*
* crQUEUE_SEND_FROM_ISR can only be called from an ISR to send data to a queue
* that is being used from within a co-routine.
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xQueue The handle to the queue on which the item is to be posted.
*
* @param pvItemToQueue A pointer to the item that is to be placed on the
* queue. The size of the items the queue will hold was defined when the
* queue was created, so this many bytes will be copied from pvItemToQueue
* into the queue storage area.
*
* @param xCoRoutinePreviouslyWoken This is included so an ISR can post onto
* the same queue multiple times from a single interrupt. The first call
* should always pass in pdFALSE. Subsequent calls should pass in
* the value returned from the previous call.
*
* @return pdTRUE if a co-routine was woken by posting onto the queue. This is
* used by the ISR to determine if a context switch may be required following
* the ISR.
*
* Example usage:
<pre>
// A co-routine that blocks on a queue waiting for characters to be received.
static void vReceivingCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
portCHAR cRxedChar;
portBASE_TYPE xResult;
// All co-routines must start with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// Wait for data to become available on the queue. This assumes the
// queue xCommsRxQueue has already been created!
crQUEUE_RECEIVE( xHandle, xCommsRxQueue, &uxLEDToFlash, portMAX_DELAY, &xResult );
// Was a character received?
if( xResult == pdPASS )
{
// Process the character here.
}
}
// All co-routines must end with a call to crEND().
crEND();
}
// An ISR that uses a queue to send characters received on a serial port to
// a co-routine.
void vUART_ISR( void )
{
portCHAR cRxedChar;
portBASE_TYPE xCRWokenByPost = pdFALSE;
// We loop around reading characters until there are none left in the UART.
while( UART_RX_REG_NOT_EMPTY() )
{
// Obtain the character from the UART.
cRxedChar = UART_RX_REG;
// Post the character onto a queue. xCRWokenByPost will be pdFALSE
// the first time around the loop. If the post causes a co-routine
// to be woken (unblocked) then xCRWokenByPost will be set to pdTRUE.
// In this manner we can ensure that if more than one co-routine is
// blocked on the queue only one is woken by this ISR no matter how
// many characters are posted to the queue.
xCRWokenByPost = crQUEUE_SEND_FROM_ISR( xCommsRxQueue, &cRxedChar, xCRWokenByPost );
}
}</pre>
* \defgroup crQUEUE_SEND_FROM_ISR crQUEUE_SEND_FROM_ISR
* \ingroup Tasks
*/
#define crQUEUE_SEND_FROM_ISR( pxQueue, pvItemToQueue, xCoRoutinePreviouslyWoken ) xQueueCRSendFromISR( pxQueue, pvItemToQueue, xCoRoutinePreviouslyWoken )
/**
* croutine. h
* <pre>
crQUEUE_SEND_FROM_ISR(
xQueueHandle pxQueue,
void *pvBuffer,
portBASE_TYPE * pxCoRoutineWoken
)</pre>
*
* The macro's crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() are the
* co-routine equivalent to the xQueueSendFromISR() and xQueueReceiveFromISR()
* functions used by tasks.
*
* crQUEUE_SEND_FROM_ISR() and crQUEUE_RECEIVE_FROM_ISR() can only be used to
* pass data between a co-routine and and ISR, whereas xQueueSendFromISR() and
* xQueueReceiveFromISR() can only be used to pass data between a task and and
* ISR.
*
* crQUEUE_RECEIVE_FROM_ISR can only be called from an ISR to receive data
* from a queue that is being used from within a co-routine (a co-routine
* posted to the queue).
*
* See the co-routine section of the WEB documentation for information on
* passing data between tasks and co-routines and between ISR's and
* co-routines.
*
* @param xQueue The handle to the queue on which the item is to be posted.
*
* @param pvBuffer A pointer to a buffer into which the received item will be
* placed. The size of the items the queue will hold was defined when the
* queue was created, so this many bytes will be copied from the queue into
* pvBuffer.
*
* @param pxCoRoutineWoken A co-routine may be blocked waiting for space to become
* available on the queue. If crQUEUE_RECEIVE_FROM_ISR causes such a
* co-routine to unblock *pxCoRoutineWoken will get set to pdTRUE, otherwise
* *pxCoRoutineWoken will remain unchanged.
*
* @return pdTRUE an item was successfully received from the queue, otherwise
* pdFALSE.
*
* Example usage:
<pre>
// A co-routine that posts a character to a queue then blocks for a fixed
// period. The character is incremented each time.
static void vSendingCoRoutine( xCoRoutineHandle xHandle, unsigned portBASE_TYPE uxIndex )
{
// cChar holds its value while this co-routine is blocked and must therefore
// be declared static.
static portCHAR cCharToTx = 'a';
portBASE_TYPE xResult;
// All co-routines must start with a call to crSTART().
crSTART( xHandle );
for( ;; )
{
// Send the next character to the queue.
crQUEUE_SEND( xHandle, xCoRoutineQueue, &cCharToTx, NO_DELAY, &xResult );
if( xResult == pdPASS )
{
// The character was successfully posted to the queue.
}
else
{
// Could not post the character to the queue.
}
// Enable the UART Tx interrupt to cause an interrupt in this
// hypothetical UART. The interrupt will obtain the character
// from the queue and send it.
ENABLE_RX_INTERRUPT();
// Increment to the next character then block for a fixed period.
// cCharToTx will maintain its value across the delay as it is
// declared static.
cCharToTx++;
if( cCharToTx > 'x' )
{
cCharToTx = 'a';
}
crDELAY( 100 );
}
// All co-routines must end with a call to crEND().
crEND();
}
// An ISR that uses a queue to receive characters to send on a UART.
void vUART_ISR( void )
{
portCHAR cCharToTx;
portBASE_TYPE xCRWokenByPost = pdFALSE;
while( UART_TX_REG_EMPTY() )
{
// Are there any characters in the queue waiting to be sent?
// xCRWokenByPost will automatically be set to pdTRUE if a co-routine
// is woken by the post - ensuring that only a single co-routine is
// woken no matter how many times we go around this loop.
if( crQUEUE_RECEIVE_FROM_ISR( pxQueue, &cCharToTx, &xCRWokenByPost ) )
{
SEND_CHARACTER( cCharToTx );
}
}
}</pre>
* \defgroup crQUEUE_RECEIVE_FROM_ISR crQUEUE_RECEIVE_FROM_ISR
* \ingroup Tasks
*/
#define crQUEUE_RECEIVE_FROM_ISR( pxQueue, pvBuffer, pxCoRoutineWoken ) xQueueCRReceiveFromISR( pxQueue, pvBuffer, pxCoRoutineWoken )
/*
* This function is intended for internal use by the co-routine macros only.
* The macro nature of the co-routine implementation requires that the
* prototype appears here. The function should not be used by application
* writers.
*
* Removes the current co-routine from its ready list and places it in the
* appropriate delayed list.
*/
void vCoRoutineAddToDelayedList( portTickType xTicksToDelay, xList *pxEventList );
/*
* This function is intended for internal use by the queue implementation only.
* The function should not be used by application writers.
*
* Removes the highest priority co-routine from the event list and places it in
* the pending ready list.
*/
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList );
#ifdef __cplusplus
}
#endif
#endif /* CO_ROUTINE_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/list.h
+288
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@@ -0,0 +1,288 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*
* This is the list implementation used by the scheduler. While it is tailored
* heavily for the schedulers needs, it is also available for use by
* application code.
*
* xLists can only store pointers to xListItems. Each xListItem contains a
* numeric value (xItemValue). Most of the time the lists are sorted in
* descending item value order.
*
* Lists are created already containing one list item. The value of this
* item is the maximum possible that can be stored, it is therefore always at
* the end of the list and acts as a marker. The list member pxHead always
* points to this marker - even though it is at the tail of the list. This
* is because the tail contains a wrap back pointer to the true head of
* the list.
*
* In addition to it's value, each list item contains a pointer to the next
* item in the list (pxNext), a pointer to the list it is in (pxContainer)
* and a pointer to back to the object that contains it. These later two
* pointers are included for efficiency of list manipulation. There is
* effectively a two way link between the object containing the list item and
* the list item itself.
*
*
* \page ListIntroduction List Implementation
* \ingroup FreeRTOSIntro
*/
/*
Changes from V4.3.1
+ Included local const within listGET_OWNER_OF_NEXT_ENTRY() to assist
compiler with optimisation. Thanks B.R.
*/
#ifndef LIST_H
#define LIST_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* Definition of the only type of object that a list can contain.
*/
struct xLIST_ITEM
{
portTickType xItemValue; /*< The value being listed. In most cases this is used to sort the list in descending order. */
volatile struct xLIST_ITEM * pxNext; /*< Pointer to the next xListItem in the list. */
volatile struct xLIST_ITEM * pxPrevious;/*< Pointer to the previous xListItem in the list. */
void * pvOwner; /*< Pointer to the object (normally a TCB) that contains the list item. There is therefore a two way link between the object containing the list item and the list item itself. */
void * pvContainer; /*< Pointer to the list in which this list item is placed (if any). */
};
typedef struct xLIST_ITEM xListItem; /* For some reason lint wants this as two separate definitions. */
struct xMINI_LIST_ITEM
{
portTickType xItemValue;
volatile struct xLIST_ITEM *pxNext;
volatile struct xLIST_ITEM *pxPrevious;
};
typedef struct xMINI_LIST_ITEM xMiniListItem;
/*
* Definition of the type of queue used by the scheduler.
*/
typedef struct xLIST
{
volatile unsigned portBASE_TYPE uxNumberOfItems;
volatile xListItem * pxIndex; /*< Used to walk through the list. Points to the last item returned by a call to pvListGetOwnerOfNextEntry (). */
volatile xMiniListItem xListEnd; /*< List item that contains the maximum possible item value meaning it is always at the end of the list and is therefore used as a marker. */
} xList;
/*
* Access macro to set the owner of a list item. The owner of a list item
* is the object (usually a TCB) that contains the list item.
*
* \page listSET_LIST_ITEM_OWNER listSET_LIST_ITEM_OWNER
* \ingroup LinkedList
*/
#define listSET_LIST_ITEM_OWNER( pxListItem, pxOwner ) ( pxListItem )->pvOwner = ( void * ) pxOwner
/*
* Access macro to set the value of the list item. In most cases the value is
* used to sort the list in descending order.
*
* \page listSET_LIST_ITEM_VALUE listSET_LIST_ITEM_VALUE
* \ingroup LinkedList
*/
#define listSET_LIST_ITEM_VALUE( pxListItem, xValue ) ( pxListItem )->xItemValue = xValue
/*
* Access macro the retrieve the value of the list item. The value can
* represent anything - for example a the priority of a task, or the time at
* which a task should be unblocked.
*
* \page listGET_LIST_ITEM_VALUE listGET_LIST_ITEM_VALUE
* \ingroup LinkedList
*/
#define listGET_LIST_ITEM_VALUE( pxListItem ) ( ( pxListItem )->xItemValue )
/*
* Access macro to determine if a list contains any items. The macro will
* only have the value true if the list is empty.
*
* \page listLIST_IS_EMPTY listLIST_IS_EMPTY
* \ingroup LinkedList
*/
#define listLIST_IS_EMPTY( pxList ) ( ( pxList )->uxNumberOfItems == ( unsigned portBASE_TYPE ) 0 )
/*
* Access macro to return the number of items in the list.
*/
#define listCURRENT_LIST_LENGTH( pxList ) ( ( pxList )->uxNumberOfItems )
/*
* Access function to obtain the owner of the next entry in a list.
*
* The list member pxIndex is used to walk through a list. Calling
* listGET_OWNER_OF_NEXT_ENTRY increments pxIndex to the next item in the list
* and returns that entries pxOwner parameter. Using multiple calls to this
* function it is therefore possible to move through every item contained in
* a list.
*
* The pxOwner parameter of a list item is a pointer to the object that owns
* the list item. In the scheduler this is normally a task control block.
* The pxOwner parameter effectively creates a two way link between the list
* item and its owner.
*
* @param pxList The list from which the next item owner is to be returned.
*
* \page listGET_OWNER_OF_NEXT_ENTRY listGET_OWNER_OF_NEXT_ENTRY
* \ingroup LinkedList
*/
#define listGET_OWNER_OF_NEXT_ENTRY( pxTCB, pxList ) \
{ \
xList * const pxConstList = pxList; \
/* Increment the index to the next item and return the item, ensuring */ \
/* we don't return the marker used at the end of the list. */ \
( pxConstList )->pxIndex = ( pxConstList )->pxIndex->pxNext; \
if( ( pxConstList )->pxIndex == ( xListItem * ) &( ( pxConstList )->xListEnd ) ) \
{ \
( pxConstList )->pxIndex = ( pxConstList )->pxIndex->pxNext; \
} \
pxTCB = ( pxConstList )->pxIndex->pvOwner; \
}
/*
* Access function to obtain the owner of the first entry in a list. Lists
* are normally sorted in ascending item value order.
*
* This function returns the pxOwner member of the first item in the list.
* The pxOwner parameter of a list item is a pointer to the object that owns
* the list item. In the scheduler this is normally a task control block.
* The pxOwner parameter effectively creates a two way link between the list
* item and its owner.
*
* @param pxList The list from which the owner of the head item is to be
* returned.
*
* \page listGET_OWNER_OF_HEAD_ENTRY listGET_OWNER_OF_HEAD_ENTRY
* \ingroup LinkedList
*/
#define listGET_OWNER_OF_HEAD_ENTRY( pxList ) ( ( pxList->uxNumberOfItems != ( unsigned portBASE_TYPE ) 0 ) ? ( (&( pxList->xListEnd ))->pxNext->pvOwner ) : ( NULL ) )
/*
* Check to see if a list item is within a list. The list item maintains a
* "container" pointer that points to the list it is in. All this macro does
* is check to see if the container and the list match.
*
* @param pxList The list we want to know if the list item is within.
* @param pxListItem The list item we want to know if is in the list.
* @return pdTRUE is the list item is in the list, otherwise pdFALSE.
* pointer against
*/
#define listIS_CONTAINED_WITHIN( pxList, pxListItem ) ( ( pxListItem )->pvContainer == ( void * ) pxList )
/*
* Must be called before a list is used! This initialises all the members
* of the list structure and inserts the xListEnd item into the list as a
* marker to the back of the list.
*
* @param pxList Pointer to the list being initialised.
*
* \page vListInitialise vListInitialise
* \ingroup LinkedList
*/
void vListInitialise( xList *pxList );
/*
* Must be called before a list item is used. This sets the list container to
* null so the item does not think that it is already contained in a list.
*
* @param pxItem Pointer to the list item being initialised.
*
* \page vListInitialiseItem vListInitialiseItem
* \ingroup LinkedList
*/
void vListInitialiseItem( xListItem *pxItem );
/*
* Insert a list item into a list. The item will be inserted into the list in
* a position determined by its item value (descending item value order).
*
* @param pxList The list into which the item is to be inserted.
*
* @param pxNewListItem The item to that is to be placed in the list.
*
* \page vListInsert vListInsert
* \ingroup LinkedList
*/
void vListInsert( xList *pxList, xListItem *pxNewListItem );
/*
* Insert a list item into a list. The item will be inserted in a position
* such that it will be the last item within the list returned by multiple
* calls to listGET_OWNER_OF_NEXT_ENTRY.
*
* The list member pvIndex is used to walk through a list. Calling
* listGET_OWNER_OF_NEXT_ENTRY increments pvIndex to the next item in the list.
* Placing an item in a list using vListInsertEnd effectively places the item
* in the list position pointed to by pvIndex. This means that every other
* item within the list will be returned by listGET_OWNER_OF_NEXT_ENTRY before
* the pvIndex parameter again points to the item being inserted.
*
* @param pxList The list into which the item is to be inserted.
*
* @param pxNewListItem The list item to be inserted into the list.
*
* \page vListInsertEnd vListInsertEnd
* \ingroup LinkedList
*/
void vListInsertEnd( xList *pxList, xListItem *pxNewListItem );
/*
* Remove an item from a list. The list item has a pointer to the list that
* it is in, so only the list item need be passed into the function.
*
* @param vListRemove The item to be removed. The item will remove itself from
* the list pointed to by it's pxContainer parameter.
*
* \page vListRemove vListRemove
* \ingroup LinkedList
*/
void vListRemove( xListItem *pxItemToRemove );
#ifdef __cplusplus
}
#endif
#endif
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/portable.h
+249
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@@ -0,0 +1,249 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http:www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http:www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*-----------------------------------------------------------
* Portable layer API. Each function must be defined for each port.
*----------------------------------------------------------*/
#ifndef PORTABLE_H
#define PORTABLE_H
/* Include the macro file relevant to the port being used. */
#ifdef OPEN_WATCOM_INDUSTRIAL_PC_PORT
#include "..\..\source\portable\owatcom\16bitdos\pc\portmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef OPEN_WATCOM_FLASH_LITE_186_PORT
#include "..\..\source\portable\owatcom\16bitdos\flsh186\portmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef GCC_MEGA_AVR
#include "../portable/GCC/ATMega323/portmacro.h"
#endif
#ifdef IAR_MEGA_AVR
#include "../portable/IAR/ATMega323/portmacro.h"
#endif
#ifdef MPLAB_PIC24_PORT
#include "..\..\Source\portable\MPLAB\PIC24_dsPIC\portmacro.h"
#endif
#ifdef MPLAB_DSPIC_PORT
#include "..\..\Source\portable\MPLAB\PIC24_dsPIC\portmacro.h"
#endif
#ifdef MPLAB_PIC18F_PORT
#include "..\..\source\portable\MPLAB\PIC18F\portmacro.h"
#endif
#ifdef MPLAB_PIC32MX_PORT
#include "..\..\Source\portable\MPLAB\PIC32MX\portmacro.h"
#endif
#ifdef _FEDPICC
#include "libFreeRTOS/Include/portmacro.h"
#endif
#ifdef SDCC_CYGNAL
#include "../../Source/portable/SDCC/Cygnal/portmacro.h"
#endif
#ifdef GCC_ARM7
#include "../../Source/portable/GCC/ARM7_LPC2000/portmacro.h"
#endif
#ifdef GCC_ARM7_ECLIPSE
#include "portmacro.h"
#endif
#ifdef ROWLEY_LPC23xx
#include "../../Source/portable/GCC/ARM7_LPC23xx/portmacro.h"
#endif
#ifdef GCC_MSP430
#include "../../Source/portable/GCC/MSP430F449/portmacro.h"
#endif
#ifdef ROWLEY_MSP430
#include "../../Source/portable/Rowley/MSP430F449/portmacro.h"
#endif
#ifdef KEIL_ARM7
#include "..\..\Source\portable\Keil\ARM7\portmacro.h"
#endif
#ifdef SAM7_GCC
#include "../../Source/portable/GCC/ARM7_AT91SAM7S/portmacro.h"
#endif
#ifdef SAM7_IAR
#include "..\..\Source\portable\IAR\AtmelSAM7S64\portmacro.h"
#endif
#ifdef LPC2000_IAR
#include "..\..\Source\portable\IAR\LPC2000\portmacro.h"
#endif
#ifdef STR71X_IAR
#include "..\..\Source\portable\IAR\STR71x\portmacro.h"
#endif
#ifdef STR75X_IAR
#include "..\..\Source\portable\IAR\STR75x\portmacro.h"
#endif
#ifdef STR75X_GCC
#include "..\..\Source\portable\GCC\STR75x\portmacro.h"
#endif
#ifdef STR91X_IAR
#include "..\..\Source\portable\IAR\STR91x\portmacro.h"
#endif
#ifdef GCC_H8S
#include "../../Source/portable/GCC/H8S2329/portmacro.h"
#endif
#ifdef GCC_AT91FR40008
#include "../../Source/portable/GCC/ARM7_AT91FR40008/portmacro.h"
#endif
#ifdef RVDS_ARMCM3_LM3S102
#include "../../Source/portable/RVDS/ARM_CM3/portmacro.h"
#endif
#ifdef GCC_ARMCM3_LM3S102
#include "../../Source/portable/GCC/ARM_CM3/portmacro.h"
#endif
#ifdef IAR_ARM_CM3
#include "../../Source/portable/IAR/ARM_CM3/portmacro.h"
#endif
#ifdef IAR_ARMCM3_LM
#include "../../Source/portable/IAR/ARM_CM3/portmacro.h"
#endif
#ifdef HCS12_CODE_WARRIOR
#include "../../Source/portable/CodeWarrior/HCS12/portmacro.h"
#endif
#ifdef MICROBLAZE_GCC
#include "../../Source/portable/GCC/MicroBlaze/portmacro.h"
#endif
#ifdef TERN_EE
#include "..\..\Source\portable\Paradigm\Tern_EE\small\portmacro.h"
#endif
#ifdef GCC_HCS12
#include "../../Source/portable/GCC/HCS12/portmacro.h"
#endif
#ifdef GCC_MCF5235
#include "../../Source/portable/GCC/MCF5235/portmacro.h"
#endif
#ifdef BCC_INDUSTRIAL_PC_PORT
/* A short file name has to be used in place of the normal
FreeRTOSConfig.h when using the Borland compiler. */
#include "frconfig.h"
#include "..\portable\BCC\16BitDOS\PC\prtmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef BCC_FLASH_LITE_186_PORT
/* A short file name has to be used in place of the normal
FreeRTOSConfig.h when using the Borland compiler. */
#include "frconfig.h"
#include "..\portable\BCC\16BitDOS\flsh186\prtmacro.h"
typedef void ( __interrupt __far *pxISR )();
#endif
#ifdef __GNUC__
#ifdef __AVR32_AVR32A__
#include "portmacro.h"
#endif
#endif
#ifdef __ICCAVR32__
#ifdef __CORE__
#if __CORE__ == __AVR32A__
#include "portmacro.h"
#endif
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Setup the stack of a new task so it is ready to be placed under the
* scheduler control. The registers have to be placed on the stack in
* the order that the port expects to find them.
*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters );
/*
* Map to the memory management routines required for the port.
*/
void *pvPortMalloc( size_t xSize );
void vPortFree( void *pv );
void vPortInitialiseBlocks( void );
/*
* Setup the hardware ready for the scheduler to take control. This generally
* sets up a tick interrupt and sets timers for the correct tick frequency.
*/
portBASE_TYPE xPortStartScheduler( void );
/*
* Undo any hardware/ISR setup that was performed by xPortStartScheduler() so
* the hardware is left in its original condition after the scheduler stops
* executing.
*/
void vPortEndScheduler( void );
#ifdef __cplusplus
}
#endif
#endif /* PORTABLE_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/projdefs.h
+60
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@@ -0,0 +1,60 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
#ifndef PROJDEFS_H
#define PROJDEFS_H
/* Defines to prototype to which task functions must conform. */
typedef void (*pdTASK_CODE)( void * );
#define pdTRUE ( 1 )
#define pdFALSE ( 0 )
#define pdPASS ( 1 )
#define pdFAIL ( 0 )
#define errQUEUE_EMPTY ( 0 )
#define errQUEUE_FULL ( 0 )
/* Error definitions. */
#define errCOULD_NOT_ALLOCATE_REQUIRED_MEMORY ( -1 )
#define errNO_TASK_TO_RUN ( -2 )
#define errQUEUE_BLOCKED ( -4 )
#define errQUEUE_YIELD ( -5 )
#endif /* PROJDEFS_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/queue.h
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Tester/SW/Eclipse/lib/FreeRTOS/Source/include/semphr.h
+347
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/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
#include "queue.h"
#ifndef SEMAPHORE_H
#define SEMAPHORE_H
typedef xQueueHandle xSemaphoreHandle;
#define semBINARY_SEMAPHORE_QUEUE_LENGTH ( ( unsigned portCHAR ) 1 )
#define semSEMAPHORE_QUEUE_ITEM_LENGTH ( ( unsigned portCHAR ) 0 )
#define semGIVE_BLOCK_TIME ( ( portTickType ) 0 )
/**
* semphr. h
* <pre>vSemaphoreCreateBinary( xSemaphoreHandle xSemaphore )</pre>
*
* <i>Macro</i> that implements a semaphore by using the existing queue mechanism.
* The queue length is 1 as this is a binary semaphore. The data size is 0
* as we don't want to actually store any data - we just want to know if the
* queue is empty or full.
*
* This type of semaphore can be used for pure synchronisation between tasks or
* between an interrupt and a task. The semaphore need not be given back once
* obtained, so one task/interrupt can continuously 'give' the semaphore while
* another continuously 'takes' the semaphore. For this reason this type of
* semaphore does not use a priority inheritance mechanism. For an alternative
* that does use priority inheritance see xSemaphoreCreateMutex().
*
* @param xSemaphore Handle to the created semaphore. Should be of type xSemaphoreHandle.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore;
void vATask( void * pvParameters )
{
// Semaphore cannot be used before a call to vSemaphoreCreateBinary ().
// This is a macro so pass the variable in directly.
vSemaphoreCreateBinary( xSemaphore );
if( xSemaphore != NULL )
{
// The semaphore was created successfully.
// The semaphore can now be used.
}
}
</pre>
* \defgroup vSemaphoreCreateBinary vSemaphoreCreateBinary
* \ingroup Semaphores
*/
#define vSemaphoreCreateBinary( xSemaphore ) { \
xSemaphore = xQueueCreate( ( unsigned portCHAR ) 1, semSEMAPHORE_QUEUE_ITEM_LENGTH ); \
if( xSemaphore != NULL ) \
{ \
xSemaphoreGive( xSemaphore ); \
} \
}
/**
* semphr. h
* xSemaphoreTake(
* xSemaphoreHandle xSemaphore,
* portTickType xBlockTime
* )</pre>
*
* <i>Macro</i> to obtain a semaphore. The semaphore must of been created using
* vSemaphoreCreateBinary ().
*
* @param xSemaphore A handle to the semaphore being obtained. This is the
* handle returned by vSemaphoreCreateBinary ();
*
* @param xBlockTime The time in ticks to wait for the semaphore to become
* available. The macro portTICK_RATE_MS can be used to convert this to a
* real time. A block time of zero can be used to poll the semaphore.
*
* @return pdTRUE if the semaphore was obtained. pdFALSE if xBlockTime
* expired without the semaphore becoming available.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore = NULL;
// A task that creates a semaphore.
void vATask( void * pvParameters )
{
// Create the semaphore to guard a shared resource.
vSemaphoreCreateBinary( xSemaphore );
}
// A task that uses the semaphore.
void vAnotherTask( void * pvParameters )
{
// ... Do other things.
if( xSemaphore != NULL )
{
// See if we can obtain the semaphore. If the semaphore is not available
// wait 10 ticks to see if it becomes free.
if( xSemaphoreTake( xSemaphore, ( portTickType ) 10 ) == pdTRUE )
{
// We were able to obtain the semaphore and can now access the
// shared resource.
// ...
// We have finished accessing the shared resource. Release the
// semaphore.
xSemaphoreGive( xSemaphore );
}
else
{
// We could not obtain the semaphore and can therefore not access
// the shared resource safely.
}
}
}
</pre>
* \defgroup xSemaphoreTake xSemaphoreTake
* \ingroup Semaphores
*/
#define xSemaphoreTake( xSemaphore, xBlockTime ) xQueueReceive( ( xQueueHandle ) xSemaphore, NULL, xBlockTime )
/**
* semphr. h
* <pre>xSemaphoreGive( xSemaphoreHandle xSemaphore )</pre>
*
* <i>Macro</i> to release a semaphore. The semaphore must of been created using
* vSemaphoreCreateBinary (), and obtained using sSemaphoreTake ().
*
* This must not be used from an ISR. See xSemaphoreGiveFromISR () for
* an alternative which can be used from an ISR.
*
* @param xSemaphore A handle to the semaphore being released. This is the
* handle returned by vSemaphoreCreateBinary ();
*
* @return pdTRUE if the semaphore was released. pdFALSE if an error occurred.
* Semaphores are implemented using queues. An error can occur if there is
* no space on the queue to post a message - indicating that the
* semaphore was not first obtained correctly.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore = NULL;
void vATask( void * pvParameters )
{
// Create the semaphore to guard a shared resource.
vSemaphoreCreateBinary( xSemaphore );
if( xSemaphore != NULL )
{
if( xSemaphoreGive( xSemaphore ) != pdTRUE )
{
// We would expect this call to fail because we cannot give
// a semaphore without first "taking" it!
}
// Obtain the semaphore - don't block if the semaphore is not
// immediately available.
if( xSemaphoreTake( xSemaphore, ( portTickType ) 0 ) )
{
// We now have the semaphore and can access the shared resource.
// ...
// We have finished accessing the shared resource so can free the
// semaphore.
if( xSemaphoreGive( xSemaphore ) != pdTRUE )
{
// We would not expect this call to fail because we must have
// obtained the semaphore to get here.
}
}
}
}
</pre>
* \defgroup xSemaphoreGive xSemaphoreGive
* \ingroup Semaphores
*/
#define xSemaphoreGive( xSemaphore ) xQueueGenericSend( ( xQueueHandle ) xSemaphore, NULL, semGIVE_BLOCK_TIME, queueSEND_TO_BACK )
/**
* semphr. h
* <pre>
xSemaphoreGiveFromISR(
xSemaphoreHandle xSemaphore,
portSHORT sTaskPreviouslyWoken
)</pre>
*
* <i>Macro</i> to release a semaphore. The semaphore must of been created using
* vSemaphoreCreateBinary (), and obtained using xSemaphoreTake ().
*
* Mutex type semaphores (those created using a call to xSemaphoreCreateMutex())
* must not be used with this macro.
*
* This macro can be used from an ISR.
*
* @param xSemaphore A handle to the semaphore being released. This is the
* handle returned by vSemaphoreCreateBinary ();
*
* @param sTaskPreviouslyWoken This is included so an ISR can make multiple calls
* to xSemaphoreGiveFromISR () from a single interrupt. The first call
* should always pass in pdFALSE. Subsequent calls should pass in
* the value returned from the previous call. See the file serial .c in the
* PC port for a good example of using xSemaphoreGiveFromISR ().
*
* @return pdTRUE if a task was woken by releasing the semaphore. This is
* used by the ISR to determine if a context switch may be required following
* the ISR.
*
* Example usage:
<pre>
#define LONG_TIME 0xffff
#define TICKS_TO_WAIT 10
xSemaphoreHandle xSemaphore = NULL;
// Repetitive task.
void vATask( void * pvParameters )
{
for( ;; )
{
// We want this task to run every 10 ticks or a timer. The semaphore
// was created before this task was started
// Block waiting for the semaphore to become available.
if( xSemaphoreTake( xSemaphore, LONG_TIME ) == pdTRUE )
{
// It is time to execute.
// ...
// We have finished our task. Return to the top of the loop where
// we will block on the semaphore until it is time to execute
// again.
}
}
}
// Timer ISR
void vTimerISR( void * pvParameters )
{
static unsigned portCHAR ucLocalTickCount = 0;
// A timer tick has occurred.
// ... Do other time functions.
// Is it time for vATask () to run?
ucLocalTickCount++;
if( ucLocalTickCount >= TICKS_TO_WAIT )
{
// Unblock the task by releasing the semaphore.
xSemaphoreGive( xSemaphore );
// Reset the count so we release the semaphore again in 10 ticks time.
ucLocalTickCount = 0;
}
}
</pre>
* \defgroup xSemaphoreGiveFromISR xSemaphoreGiveFromISR
* \ingroup Semaphores
*/
#define xSemaphoreGiveFromISR( xSemaphore, xTaskPreviouslyWoken ) xQueueGenericSendFromISR( ( xQueueHandle ) xSemaphore, NULL, xTaskPreviouslyWoken, queueSEND_TO_BACK )
/**
* semphr. h
* <pre>xSemaphoreCreateMutex( xSemaphoreHandle xSemaphore )</pre>
*
* <i>Macro</i> that implements a mutex semaphore by using the existing queue
* mechanism.
*
* This type of semaphore uses a priority inheritance mechanism so a task
* 'taking' a semaphore MUST ALWAYS 'give' the semaphore back once the
* semaphore it is no longer required.
*
* Mutex type semaphores cannot be used from within interrupt service routines.
*
* See xSemaphoreCreateBinary() for an alternative implemnetation that can be
* used for pure synchronisation (where one task or interrupt always 'gives' the
* semaphore and another always 'takes' the semaphore) and from within interrupt
* service routines.
*
* @param xSemaphore Handle to the created mutex semaphore. Should be of type
* xSemaphoreHandle.
*
* Example usage:
<pre>
xSemaphoreHandle xSemaphore;
void vATask( void * pvParameters )
{
// Semaphore cannot be used before a call to vSemaphoreCreateBinary ().
// This is a macro so pass the variable in directly.
vSemaphoreCreateMutex( xSemaphore );
if( xSemaphore != NULL )
{
// The semaphore was created successfully.
// The semaphore can now be used.
}
}
</pre>
* \defgroup vSemaphoreCreateMutex vSemaphoreCreateMutex
* \ingroup Semaphores
*/
#define xSemaphoreCreateMutex() xQueueCreateMutex()
#endif /* SEMAPHORE_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/include/task.h
+989
View File
@@ -0,0 +1,989 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*
Changes since V4.3.1:
+ Added xTaskGetSchedulerState() function.
*/
#ifndef TASK_H
#define TASK_H
#include "portable.h"
#include "list.h"
#ifdef __cplusplus
extern "C" {
#endif
/*-----------------------------------------------------------
* MACROS AND DEFINITIONS
*----------------------------------------------------------*/
#define tskKERNEL_VERSION_NUMBER "V4.6.1"
/**
* task. h
*
* Type by which tasks are referenced. For example, a call to xTaskCreate
* returns (via a pointer parameter) an xTaskHandle variable that can then
* be used as a parameter to vTaskDelete to delete the task.
*
* \page xTaskHandle xTaskHandle
* \ingroup Tasks
*/
typedef void * xTaskHandle;
/*
* Used internally only.
*/
typedef struct xTIME_OUT
{
portBASE_TYPE xOverflowCount;
portTickType xTimeOnEntering;
} xTimeOutType;
/*
* Defines the priority used by the idle task. This must not be modified.
*
* \ingroup TaskUtils
*/
#define tskIDLE_PRIORITY ( ( unsigned portBASE_TYPE ) 0 )
/**
* task. h
*
* Macro for forcing a context switch.
*
* \page taskYIELD taskYIELD
* \ingroup SchedulerControl
*/
#define taskYIELD() portYIELD()
/**
* task. h
*
* Macro to mark the start of a critical code region. Preemptive context
* switches cannot occur when in a critical region.
*
* NOTE: This may alter the stack (depending on the portable implementation)
* so must be used with care!
*
* \page taskENTER_CRITICAL taskENTER_CRITICAL
* \ingroup SchedulerControl
*/
#define taskENTER_CRITICAL() portENTER_CRITICAL()
/**
* task. h
*
* Macro to mark the end of a critical code region. Preemptive context
* switches cannot occur when in a critical region.
*
* NOTE: This may alter the stack (depending on the portable implementation)
* so must be used with care!
*
* \page taskEXIT_CRITICAL taskEXIT_CRITICAL
* \ingroup SchedulerControl
*/
#define taskEXIT_CRITICAL() portEXIT_CRITICAL()
/**
* task. h
*
* Macro to disable all maskable interrupts.
*
* \page taskDISABLE_INTERRUPTS taskDISABLE_INTERRUPTS
* \ingroup SchedulerControl
*/
#define taskDISABLE_INTERRUPTS() portDISABLE_INTERRUPTS()
/**
* task. h
*
* Macro to enable microcontroller interrupts.
*
* \page taskENABLE_INTERRUPTS taskENABLE_INTERRUPTS
* \ingroup SchedulerControl
*/
#define taskENABLE_INTERRUPTS() portENABLE_INTERRUPTS()
/* Definitions returned by xTaskGetSchedulerState(). */
#define taskSCHEDULER_NOT_STARTED 0
#define taskSCHEDULER_RUNNING 1
#define taskSCHEDULER_SUSPENDED 2
/*-----------------------------------------------------------
* TASK CREATION API
*----------------------------------------------------------*/
/**
* task. h
*<pre>
portBASE_TYPE xTaskCreate(
pdTASK_CODE pvTaskCode,
const portCHAR * const pcName,
unsigned portSHORT usStackDepth,
void *pvParameters,
unsigned portBASE_TYPE uxPriority,
xTaskHandle *pvCreatedTask
);</pre>
*
* Create a new task and add it to the list of tasks that are ready to run.
*
* @param pvTaskCode Pointer to the task entry function. Tasks
* must be implemented to never return (i.e. continuous loop).
*
* @param pcName A descriptive name for the task. This is mainly used to
* facilitate debugging. Max length defined by tskMAX_TASK_NAME_LEN - default
* is 16.
*
* @param usStackDepth The size of the task stack specified as the number of
* variables the stack can hold - not the number of bytes. For example, if
* the stack is 16 bits wide and usStackDepth is defined as 100, 200 bytes
* will be allocated for stack storage.
*
* @param pvParameters Pointer that will be used as the parameter for the task
* being created.
*
* @param uxPriority The priority at which the task should run.
*
* @param pvCreatedTask Used to pass back a handle by which the created task
* can be referenced.
*
* @return pdPASS if the task was successfully created and added to a ready
* list, otherwise an error code defined in the file errors. h
*
* Example usage:
<pre>
// Task to be created.
void vTaskCode( void * pvParameters )
{
for( ;; )
{
// Task code goes here.
}
}
// Function that creates a task.
void vOtherFunction( void )
{
unsigned char ucParameterToPass;
xTaskHandle xHandle;
// Create the task, storing the handle.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, &ucParameterToPass, tskIDLE_PRIORITY, &xHandle );
// Use the handle to delete the task.
vTaskDelete( xHandle );
}
</pre>
* \defgroup xTaskCreate xTaskCreate
* \ingroup Tasks
*/
signed portBASE_TYPE xTaskCreate( pdTASK_CODE pvTaskCode, const signed portCHAR * const pcName, unsigned portSHORT usStackDepth, void *pvParameters, unsigned portBASE_TYPE uxPriority, xTaskHandle *pvCreatedTask );
/**
* task. h
* <pre>void vTaskDelete( xTaskHandle pxTask );</pre>
*
* INCLUDE_vTaskDelete must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* Remove a task from the RTOS real time kernels management. The task being
* deleted will be removed from all ready, blocked, suspended and event lists.
*
* NOTE: The idle task is responsible for freeing the kernel allocated
* memory from tasks that have been deleted. It is therefore important that
* the idle task is not starved of microcontroller processing time if your
* application makes any calls to vTaskDelete (). Memory allocated by the
* task code is not automatically freed, and should be freed before the task
* is deleted.
*
* See the demo application file death.c for sample code that utilises
* vTaskDelete ().
*
* @param pxTask The handle of the task to be deleted. Passing NULL will
* cause the calling task to be deleted.
*
* Example usage:
<pre>
void vOtherFunction( void )
{
xTaskHandle xHandle;
// Create the task, storing the handle.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, &xHandle );
// Use the handle to delete the task.
vTaskDelete( xHandle );
}
</pre>
* \defgroup vTaskDelete vTaskDelete
* \ingroup Tasks
*/
void vTaskDelete( xTaskHandle pxTask );
/*-----------------------------------------------------------
* TASK CONTROL API
*----------------------------------------------------------*/
/**
* task. h
* <pre>void vTaskDelay( portTickType xTicksToDelay );</pre>
*
* Delay a task for a given number of ticks. The actual time that the
* task remains blocked depends on the tick rate. The constant
* portTICK_RATE_MS can be used to calculate real time from the tick
* rate - with the resolution of one tick period.
*
* INCLUDE_vTaskDelay must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* @param xTicksToDelay The amount of time, in tick periods, that
* the calling task should block.
*
* Example usage:
<pre>
// Wait 10 ticks before performing an action.
// NOTE:
// This is for demonstration only and would be better achieved
// using vTaskDelayUntil ().
void vTaskFunction( void * pvParameters )
{
portTickType xDelay, xNextTime;
// Calc the time at which we want to perform the action
// next.
xNextTime = xTaskGetTickCount () + ( portTickType ) 10;
for( ;; )
{
xDelay = xNextTime - xTaskGetTickCount ();
xNextTime += ( portTickType ) 10;
// Guard against overflow
if( xDelay <= ( portTickType ) 10 )
{
vTaskDelay( xDelay );
}
// Perform action here.
}
}
</pre>
* \defgroup vTaskDelay vTaskDelay
* \ingroup TaskCtrl
*/
void vTaskDelay( portTickType xTicksToDelay );
/**
* task. h
* <pre>void vTaskDelayUntil( portTickType *pxPreviousWakeTime, portTickType xTimeIncrement );</pre>
*
* INCLUDE_vTaskDelayUntil must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* Delay a task until a specified time. This function can be used by cyclical
* tasks to ensure a constant execution frequency.
*
* This function differs from vTaskDelay () in one important aspect: vTaskDelay () will
* cause a task to block for the specified number of ticks from the time vTaskDelay () is
* called. It is therefore difficult to use vTaskDelay () by itself to generate a fixed
* execution frequency as the time between a task starting to execute and that task
* calling vTaskDelay () may not be fixed [the task may take a different path though the
* code between calls, or may get interrupted or preempted a different number of times
* each time it executes].
*
* Whereas vTaskDelay () specifies a wake time relative to the time at which the function
* is called, vTaskDelayUntil () specifies the absolute (exact) time at which it wishes to
* unblock.
*
* The constant portTICK_RATE_MS can be used to calculate real time from the tick
* rate - with the resolution of one tick period.
*
* @param pxPreviousWakeTime Pointer to a variable that holds the time at which the
* task was last unblocked. The variable must be initialised with the current time
* prior to its first use (see the example below). Following this the variable is
* automatically updated within vTaskDelayUntil ().
*
* @param xTimeIncrement The cycle time period. The task will be unblocked at
* time *pxPreviousWakeTime + xTimeIncrement. Calling vTaskDelayUntil with the
* same xTimeIncrement parameter value will cause the task to execute with
* a fixed interface period.
*
* Example usage:
<pre>
// Perform an action every 10 ticks.
void vTaskFunction( void * pvParameters )
{
portTickType xLastWakeTime;
const portTickType xFrequency = 10;
// Initialise the xLastWakeTime variable with the current time.
xLastWakeTime = xTaskGetTickCount ();
for( ;; )
{
// Wait for the next cycle.
vTaskDelayUntil( &xLastWakeTime, xFrequency );
// Perform action here.
}
}
</pre>
* \defgroup vTaskDelayUntil vTaskDelayUntil
* \ingroup TaskCtrl
*/
void vTaskDelayUntil( portTickType * const pxPreviousWakeTime, portTickType xTimeIncrement );
/**
* task. h
* <pre>unsigned portBASE_TYPE uxTaskPriorityGet( xTaskHandle pxTask );</pre>
*
* INCLUDE_xTaskPriorityGet must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* Obtain the priority of any task.
*
* @param pxTask Handle of the task to be queried. Passing a NULL
* handle results in the priority of the calling task being returned.
*
* @return The priority of pxTask.
*
* Example usage:
<pre>
void vAFunction( void )
{
xTaskHandle xHandle;
// Create a task, storing the handle.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, &xHandle );
// ...
// Use the handle to obtain the priority of the created task.
// It was created with tskIDLE_PRIORITY, but may have changed
// it itself.
if( uxTaskPriorityGet( xHandle ) != tskIDLE_PRIORITY )
{
// The task has changed it's priority.
}
// ...
// Is our priority higher than the created task?
if( uxTaskPriorityGet( xHandle ) < uxTaskPriorityGet( NULL ) )
{
// Our priority (obtained using NULL handle) is higher.
}
}
</pre>
* \defgroup uxTaskPriorityGet uxTaskPriorityGet
* \ingroup TaskCtrl
*/
unsigned portBASE_TYPE uxTaskPriorityGet( xTaskHandle pxTask );
/**
* task. h
* <pre>void vTaskPrioritySet( xTaskHandle pxTask, unsigned portBASE_TYPE uxNewPriority );</pre>
*
* INCLUDE_vTaskPrioritySet must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* Set the priority of any task.
*
* A context switch will occur before the function returns if the priority
* being set is higher than the currently executing task.
*
* @param pxTask Handle to the task for which the priority is being set.
* Passing a NULL handle results in the priority of the calling task being set.
*
* @param uxNewPriority The priority to which the task will be set.
*
* Example usage:
<pre>
void vAFunction( void )
{
xTaskHandle xHandle;
// Create a task, storing the handle.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, &xHandle );
// ...
// Use the handle to raise the priority of the created task.
vTaskPrioritySet( xHandle, tskIDLE_PRIORITY + 1 );
// ...
// Use a NULL handle to raise our priority to the same value.
vTaskPrioritySet( NULL, tskIDLE_PRIORITY + 1 );
}
</pre>
* \defgroup vTaskPrioritySet vTaskPrioritySet
* \ingroup TaskCtrl
*/
void vTaskPrioritySet( xTaskHandle pxTask, unsigned portBASE_TYPE uxNewPriority );
/**
* task. h
* <pre>void vTaskSuspend( xTaskHandle pxTaskToSuspend );</pre>
*
* INCLUDE_vTaskSuspend must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* Suspend any task. When suspended a task will never get any microcontroller
* processing time, no matter what its priority.
*
* Calls to vTaskSuspend are not accumulative -
* i.e. calling vTaskSuspend () twice on the same task still only requires one
* call to vTaskResume () to ready the suspended task.
*
* @param pxTaskToSuspend Handle to the task being suspended. Passing a NULL
* handle will cause the calling task to be suspended.
*
* Example usage:
<pre>
void vAFunction( void )
{
xTaskHandle xHandle;
// Create a task, storing the handle.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, &xHandle );
// ...
// Use the handle to suspend the created task.
vTaskSuspend( xHandle );
// ...
// The created task will not run during this period, unless
// another task calls vTaskResume( xHandle ).
//...
// Suspend ourselves.
vTaskSuspend( NULL );
// We cannot get here unless another task calls vTaskResume
// with our handle as the parameter.
}
</pre>
* \defgroup vTaskSuspend vTaskSuspend
* \ingroup TaskCtrl
*/
void vTaskSuspend( xTaskHandle pxTaskToSuspend );
/**
* task. h
* <pre>void vTaskResume( xTaskHandle pxTaskToResume );</pre>
*
* INCLUDE_vTaskSuspend must be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* Resumes a suspended task.
*
* A task that has been suspended by one of more calls to vTaskSuspend ()
* will be made available for running again by a single call to
* vTaskResume ().
*
* @param pxTaskToResume Handle to the task being readied.
*
* Example usage:
<pre>
void vAFunction( void )
{
xTaskHandle xHandle;
// Create a task, storing the handle.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, &xHandle );
// ...
// Use the handle to suspend the created task.
vTaskSuspend( xHandle );
// ...
// The created task will not run during this period, unless
// another task calls vTaskResume( xHandle ).
//...
// Resume the suspended task ourselves.
vTaskResume( xHandle );
// The created task will once again get microcontroller processing
// time in accordance with it priority within the system.
}
</pre>
* \defgroup vTaskResume vTaskResume
* \ingroup TaskCtrl
*/
void vTaskResume( xTaskHandle pxTaskToResume );
/**
* task. h
* <pre>void xTaskResumeFromISR( xTaskHandle pxTaskToResume );</pre>
*
* INCLUDE_xTaskResumeFromISR must be defined as 1 for this function to be
* available. See the configuration section for more information.
*
* An implementation of vTaskResume() that can be called from within an ISR.
*
* A task that has been suspended by one of more calls to vTaskSuspend ()
* will be made available for running again by a single call to
* xTaskResumeFromISR ().
*
* @param pxTaskToResume Handle to the task being readied.
*
* \defgroup vTaskResumeFromISR vTaskResumeFromISR
* \ingroup TaskCtrl
*/
portBASE_TYPE xTaskResumeFromISR( xTaskHandle pxTaskToResume );
/*-----------------------------------------------------------
* SCHEDULER CONTROL
*----------------------------------------------------------*/
/**
* task. h
* <pre>void vTaskStartScheduler( void );</pre>
*
* Starts the real time kernel tick processing. After calling the kernel
* has control over which tasks are executed and when. This function
* does not return until an executing task calls vTaskEndScheduler ().
*
* At least one task should be created via a call to xTaskCreate ()
* before calling vTaskStartScheduler (). The idle task is created
* automatically when the first application task is created.
*
* See the demo application file main.c for an example of creating
* tasks and starting the kernel.
*
* Example usage:
<pre>
void vAFunction( void )
{
// Create at least one task before starting the kernel.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
// Start the real time kernel with preemption.
vTaskStartScheduler ();
// Will not get here unless a task calls vTaskEndScheduler ()
}
</pre>
*
* \defgroup vTaskStartScheduler vTaskStartScheduler
* \ingroup SchedulerControl
*/
void vTaskStartScheduler( void );
/**
* task. h
* <pre>void vTaskEndScheduler( void );</pre>
*
* Stops the real time kernel tick. All created tasks will be automatically
* deleted and multitasking (either preemptive or cooperative) will
* stop. Execution then resumes from the point where vTaskStartScheduler ()
* was called, as if vTaskStartScheduler () had just returned.
*
* See the demo application file main. c in the demo/PC directory for an
* example that uses vTaskEndScheduler ().
*
* vTaskEndScheduler () requires an exit function to be defined within the
* portable layer (see vPortEndScheduler () in port. c for the PC port). This
* performs hardware specific operations such as stopping the kernel tick.
*
* vTaskEndScheduler () will cause all of the resources allocated by the
* kernel to be freed - but will not free resources allocated by application
* tasks.
*
* Example usage:
<pre>
void vTaskCode( void * pvParameters )
{
for( ;; )
{
// Task code goes here.
// At some point we want to end the real time kernel processing
// so call ...
vTaskEndScheduler ();
}
}
void vAFunction( void )
{
// Create at least one task before starting the kernel.
xTaskCreate( vTaskCode, "NAME", STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
// Start the real time kernel with preemption.
vTaskStartScheduler ();
// Will only get here when the vTaskCode () task has called
// vTaskEndScheduler (). When we get here we are back to single task
// execution.
}
</pre>
*
* \defgroup vTaskEndScheduler vTaskEndScheduler
* \ingroup SchedulerControl
*/
void vTaskEndScheduler( void );
/**
* task. h
* <pre>void vTaskSuspendAll( void );</pre>
*
* Suspends all real time kernel activity while keeping interrupts (including the
* kernel tick) enabled.
*
* After calling vTaskSuspendAll () the calling task will continue to execute
* without risk of being swapped out until a call to xTaskResumeAll () has been
* made.
*
* Example usage:
<pre>
void vTask1( void * pvParameters )
{
for( ;; )
{
// Task code goes here.
// ...
// At some point the task wants to perform a long operation during
// which it does not want to get swapped out. It cannot use
// taskENTER_CRITICAL ()/taskEXIT_CRITICAL () as the length of the
// operation may cause interrupts to be missed - including the
// ticks.
// Prevent the real time kernel swapping out the task.
vTaskSuspendAll ();
// Perform the operation here. There is no need to use critical
// sections as we have all the microcontroller processing time.
// During this time interrupts will still operate and the kernel
// tick count will be maintained.
// ...
// The operation is complete. Restart the kernel.
xTaskResumeAll ();
}
}
</pre>
* \defgroup vTaskSuspendAll vTaskSuspendAll
* \ingroup SchedulerControl
*/
void vTaskSuspendAll( void );
/**
* task. h
* <pre>portCHAR xTaskResumeAll( void );</pre>
*
* Resumes real time kernel activity following a call to vTaskSuspendAll ().
* After a call to vTaskSuspendAll () the kernel will take control of which
* task is executing at any time.
*
* @return If resuming the scheduler caused a context switch then pdTRUE is
* returned, otherwise pdFALSE is returned.
*
* Example usage:
<pre>
void vTask1( void * pvParameters )
{
for( ;; )
{
// Task code goes here.
// ...
// At some point the task wants to perform a long operation during
// which it does not want to get swapped out. It cannot use
// taskENTER_CRITICAL ()/taskEXIT_CRITICAL () as the length of the
// operation may cause interrupts to be missed - including the
// ticks.
// Prevent the real time kernel swapping out the task.
vTaskSuspendAll ();
// Perform the operation here. There is no need to use critical
// sections as we have all the microcontroller processing time.
// During this time interrupts will still operate and the real
// time kernel tick count will be maintained.
// ...
// The operation is complete. Restart the kernel. We want to force
// a context switch - but there is no point if resuming the scheduler
// caused a context switch already.
if( !xTaskResumeAll () )
{
taskYIELD ();
}
}
}
</pre>
* \defgroup xTaskResumeAll xTaskResumeAll
* \ingroup SchedulerControl
*/
signed portBASE_TYPE xTaskResumeAll( void );
/*-----------------------------------------------------------
* TASK UTILITIES
*----------------------------------------------------------*/
/**
* task. h
* <PRE>volatile portTickType xTaskGetTickCount( void );</PRE>
*
* @return The count of ticks since vTaskStartScheduler was called.
*
* \page xTaskGetTickCount xTaskGetTickCount
* \ingroup TaskUtils
*/
portTickType xTaskGetTickCount( void );
/**
* task. h
* <PRE>unsigned portSHORT uxTaskGetNumberOfTasks( void );</PRE>
*
* @return The number of tasks that the real time kernel is currently managing.
* This includes all ready, blocked and suspended tasks. A task that
* has been deleted but not yet freed by the idle task will also be
* included in the count.
*
* \page uxTaskGetNumberOfTasks uxTaskGetNumberOfTasks
* \ingroup TaskUtils
*/
unsigned portBASE_TYPE uxTaskGetNumberOfTasks( void );
/**
* task. h
* <PRE>void vTaskList( portCHAR *pcWriteBuffer );</PRE>
*
* configUSE_TRACE_FACILITY, INCLUDE_vTaskDelete and INCLUDE_vTaskSuspend
* must all be defined as 1 for this function to be available.
* See the configuration section for more information.
*
* NOTE: This function will disable interrupts for its duration. It is
* not intended for normal application runtime use but as a debug aid.
*
* Lists all the current tasks, along with their current state and stack
* usage high water mark.
*
* Tasks are reported as blocked ('B'), ready ('R'), deleted ('D') or
* suspended ('S').
*
* @param pcWriteBuffer A buffer into which the above mentioned details
* will be written, in ascii form. This buffer is assumed to be large
* enough to contain the generated report. Approximately 40 bytes per
* task should be sufficient.
*
* \page vTaskList vTaskList
* \ingroup TaskUtils
*/
void vTaskList( signed portCHAR *pcWriteBuffer );
/**
* task. h
* <PRE>void vTaskStartTrace( portCHAR * pcBuffer, unsigned portBASE_TYPE uxBufferSize );</PRE>
*
* Starts a real time kernel activity trace. The trace logs the identity of
* which task is running when.
*
* The trace file is stored in binary format. A separate DOS utility called
* convtrce.exe is used to convert this into a tab delimited text file which
* can be viewed and plotted in a spread sheet.
*
* @param pcBuffer The buffer into which the trace will be written.
*
* @param ulBufferSize The size of pcBuffer in bytes. The trace will continue
* until either the buffer in full, or ulTaskEndTrace () is called.
*
* \page vTaskStartTrace vTaskStartTrace
* \ingroup TaskUtils
*/
void vTaskStartTrace( signed portCHAR * pcBuffer, unsigned portLONG ulBufferSize );
/**
* task. h
* <PRE>unsigned portLONG ulTaskEndTrace( void );</PRE>
*
* Stops a kernel activity trace. See vTaskStartTrace ().
*
* @return The number of bytes that have been written into the trace buffer.
*
* \page usTaskEndTrace usTaskEndTrace
* \ingroup TaskUtils
*/
unsigned portLONG ulTaskEndTrace( void );
/*-----------------------------------------------------------
* SCHEDULER INTERNALS AVAILABLE FOR PORTING PURPOSES
*----------------------------------------------------------*/
/*
* THIS FUNCTION MUST NOT BE USED FROM APPLICATION CODE. IT IS ONLY
* INTENDED FOR USE WHEN IMPLEMENTING A PORT OF THE SCHEDULER AND IS
* AN INTERFACE WHICH IS FOR THE EXCLUSIVE USE OF THE SCHEDULER.
*
* Called from the real time kernel tick (either preemptive or cooperative),
* this increments the tick count and checks if any tasks that are blocked
* for a finite period required removing from a blocked list and placing on
* a ready list.
*/
inline void vTaskIncrementTick( void );
/*
* THIS FUNCTION MUST NOT BE USED FROM APPLICATION CODE. IT IS AN
* INTERFACE WHICH IS FOR THE EXCLUSIVE USE OF THE SCHEDULER.
*
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED.
*
* Removes the calling task from the ready list and places it both
* on the list of tasks waiting for a particular event, and the
* list of delayed tasks. The task will be removed from both lists
* and replaced on the ready list should either the event occur (and
* there be no higher priority tasks waiting on the same event) or
* the delay period expires.
*
* @param pxEventList The list containing tasks that are blocked waiting
* for the event to occur.
*
* @param xTicksToWait The maximum amount of time that the task should wait
* for the event to occur. This is specified in kernel ticks,the constant
* portTICK_RATE_MS can be used to convert kernel ticks into a real time
* period.
*/
void vTaskPlaceOnEventList( const xList * const pxEventList, portTickType xTicksToWait );
/*
* THIS FUNCTION MUST NOT BE USED FROM APPLICATION CODE. IT IS AN
* INTERFACE WHICH IS FOR THE EXCLUSIVE USE OF THE SCHEDULER.
*
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED.
*
* Removes a task from both the specified event list and the list of blocked
* tasks, and places it on a ready queue.
*
* xTaskRemoveFromEventList () will be called if either an event occurs to
* unblock a task, or the block timeout period expires.
*
* @return pdTRUE if the task being removed has a higher priority than the task
* making the call, otherwise pdFALSE.
*/
signed portBASE_TYPE xTaskRemoveFromEventList( const xList * const pxEventList );
/*
* THIS FUNCTION MUST NOT BE USED FROM APPLICATION CODE. IT IS AN
* INTERFACE WHICH IS FOR THE EXCLUSIVE USE OF THE SCHEDULER.
*
* INCLUDE_vTaskCleanUpResources and INCLUDE_vTaskSuspend must be defined as 1
* for this function to be available.
* See the configuration section for more information.
*
* Empties the ready and delayed queues of task control blocks, freeing the
* memory allocated for the task control block and task stacks as it goes.
*/
void vTaskCleanUpResources( void );
/*
* THIS FUNCTION MUST NOT BE USED FROM APPLICATION CODE. IT IS ONLY
* INTENDED FOR USE WHEN IMPLEMENTING A PORT OF THE SCHEDULER AND IS
* AN INTERFACE WHICH IS FOR THE EXCLUSIVE USE OF THE SCHEDULER.
*
* Sets the pointer to the current TCB to the TCB of the highest priority task
* that is ready to run.
*/
inline void vTaskSwitchContext( void );
/*
* Return the handle of the calling task.
*/
xTaskHandle xTaskGetCurrentTaskHandle( void );
/*
* Capture the current time status for future reference.
*/
void vTaskSetTimeOutState( xTimeOutType * const pxTimeOut );
/*
* Compare the time status now with that previously captured to see if the
* timeout has expired.
*/
portBASE_TYPE xTaskCheckForTimeOut( xTimeOutType * const pxTimeOut, portTickType * const pxTicksToWait );
/*
* Shortcut used by the queue implementation to prevent unnecessary call to
* taskYIELD();
*/
void vTaskMissedYield( void );
/*
* Returns the scheduler state as taskSCHEDULER_RUNNING,
* taskSCHEDULER_NOT_STARTED or taskSCHEDULER_SUSPENDED.
*/
portBASE_TYPE xTaskGetSchedulerState( void );
/*
* Raises the priority of the mutex holder to that of the calling task should
* the mutex holder have a priority less than the calling task.
*/
void vTaskPriorityInherit( xTaskHandle * const pxMutexHolder );
/*
* Set the priority of a task back to its proper priority in the case that it
* inherited a higher priority while it was holding a semaphore.
*/
void vTaskPriorityDisinherit( xTaskHandle * const pxMutexHolder );
#ifdef __cplusplus
}
#endif
#endif /* TASK_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/list.c
+205
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@@ -0,0 +1,205 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*
Changes from V1.2.0
+ Removed the volatile modifier from the function parameters. This was
only ever included to prevent compiler warnings. Now warnings are
removed by casting parameters where the calls are made.
+ prvListGetOwnerOfNextEntry() and prvListGetOwnerOfHeadEntry() have been
removed from the c file and added as macros to the h file.
+ uxNumberOfItems has been added to the list structure. This removes the
need for a pointer comparison when checking if a list is empty, and so
is slightly faster.
+ Removed the NULL check in vListRemove(). This makes the call faster but
necessitates any application code utilising the list implementation to
ensure NULL pointers are not passed.
Changes from V2.0.0
+ Double linked the lists to allow faster removal item removal.
Changes from V2.6.1
+ Make use of the new portBASE_TYPE definition where ever appropriate.
Changes from V3.0.0
+ API changes as described on the FreeRTOS.org WEB site.
Changes from V3.2.4
+ Removed the pxHead member of the xList structure. This always pointed
to the same place so has been removed to free a few bytes of RAM.
+ Introduced the xMiniListItem structure that does not include the
xListItem members that are not required by the xListEnd member of a list.
Again this was done to reduce RAM usage.
+ Changed the volatile definitions of some structure members to clean up
the code where the list structures are used.
Changes from V4.0.4
+ Optimised vListInsert() in the case when the wake time is the maximum
tick count value.
*/
#include <stdlib.h>
#include "FreeRTOS.h"
#include "list.h"
/*-----------------------------------------------------------
* PUBLIC LIST API documented in list.h
*----------------------------------------------------------*/
void vListInitialise( xList *pxList )
{
/* The list structure contains a list item which is used to mark the
end of the list. To initialise the list the list end is inserted
as the only list entry. */
pxList->pxIndex = ( xListItem * ) &( pxList->xListEnd );
/* The list end value is the highest possible value in the list to
ensure it remains at the end of the list. */
pxList->xListEnd.xItemValue = portMAX_DELAY;
/* The list end next and previous pointers point to itself so we know
when the list is empty. */
pxList->xListEnd.pxNext = ( xListItem * ) &( pxList->xListEnd );
pxList->xListEnd.pxPrevious = ( xListItem * ) &( pxList->xListEnd );
pxList->uxNumberOfItems = 0;
}
/*-----------------------------------------------------------*/
void vListInitialiseItem( xListItem *pxItem )
{
/* Make sure the list item is not recorded as being on a list. */
pxItem->pvContainer = NULL;
}
/*-----------------------------------------------------------*/
void vListInsertEnd( xList *pxList, xListItem *pxNewListItem )
{
volatile xListItem * pxIndex;
/* Insert a new list item into pxList, but rather than sort the list,
makes the new list item the last item to be removed by a call to
pvListGetOwnerOfNextEntry. This means it has to be the item pointed to by
the pxIndex member. */
pxIndex = pxList->pxIndex;
pxNewListItem->pxNext = pxIndex->pxNext;
pxNewListItem->pxPrevious = pxList->pxIndex;
pxIndex->pxNext->pxPrevious = ( volatile xListItem * ) pxNewListItem;
pxIndex->pxNext = ( volatile xListItem * ) pxNewListItem;
pxList->pxIndex = ( volatile xListItem * ) pxNewListItem;
/* Remember which list the item is in. */
pxNewListItem->pvContainer = ( void * ) pxList;
( pxList->uxNumberOfItems )++;
}
/*-----------------------------------------------------------*/
void vListInsert( xList *pxList, xListItem *pxNewListItem )
{
volatile xListItem *pxIterator;
portTickType xValueOfInsertion;
/* Insert the new list item into the list, sorted in ulListItem order. */
xValueOfInsertion = pxNewListItem->xItemValue;
/* If the list already contains a list item with the same item value then
the new list item should be placed after it. This ensures that TCB's which
are stored in ready lists (all of which have the same ulListItem value)
get an equal share of the CPU. However, if the xItemValue is the same as
the back marker the iteration loop below will not end. This means we need
to guard against this by checking the value first and modifying the
algorithm slightly if necessary. */
if( xValueOfInsertion == portMAX_DELAY )
{
pxIterator = pxList->xListEnd.pxPrevious;
}
else
{
for( pxIterator = ( xListItem * ) &( pxList->xListEnd ); pxIterator->pxNext->xItemValue <= xValueOfInsertion; pxIterator = pxIterator->pxNext )
{
/* There is nothing to do here, we are just iterating to the
wanted insertion position. */
}
}
pxNewListItem->pxNext = pxIterator->pxNext;
pxNewListItem->pxNext->pxPrevious = ( volatile xListItem * ) pxNewListItem;
pxNewListItem->pxPrevious = pxIterator;
pxIterator->pxNext = ( volatile xListItem * ) pxNewListItem;
/* Remember which list the item is in. This allows fast removal of the
item later. */
pxNewListItem->pvContainer = ( void * ) pxList;
( pxList->uxNumberOfItems )++;
}
/*-----------------------------------------------------------*/
void vListRemove( xListItem *pxItemToRemove )
{
xList * pxList;
pxItemToRemove->pxNext->pxPrevious = pxItemToRemove->pxPrevious;
pxItemToRemove->pxPrevious->pxNext = pxItemToRemove->pxNext;
/* The list item knows which list it is in. Obtain the list from the list
item. */
pxList = ( xList * ) pxItemToRemove->pvContainer;
/* Make sure the index is left pointing to a valid item. */
if( pxList->pxIndex == pxItemToRemove )
{
pxList->pxIndex = pxItemToRemove->pxPrevious;
}
pxItemToRemove->pvContainer = NULL;
( pxList->uxNumberOfItems )--;
}
/*-----------------------------------------------------------*/
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/GCC/ARM7_LPC23xx/port.c
+235
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/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
***************************************************************************
*/
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the ARM7 port.
*
* Components that can be compiled to either ARM or THUMB mode are
* contained in this file. The ISR routines, which can only be compiled
* to ARM mode are contained in portISR.c.
*----------------------------------------------------------*/
/* Standard includes. */
#include <stdlib.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Constants required to setup the task context. */
#define portINITIAL_SPSR ( ( portSTACK_TYPE ) 0x1f ) /* System mode, ARM mode, interrupts enabled. */
#define portTHUMB_MODE_BIT ( ( portSTACK_TYPE ) 0x20 )
#define portINSTRUCTION_SIZE ( ( portSTACK_TYPE ) 4 )
#define portNO_CRITICAL_SECTION_NESTING ( ( portSTACK_TYPE ) 0 )
/* Constants required to setup the tick ISR. */
#define portENABLE_TIMER ( ( unsigned portCHAR ) 0x01 )
#define portPRESCALE_VALUE 0x00
#define portINTERRUPT_ON_MATCH ( ( unsigned portLONG ) 0x01 )
#define portRESET_COUNT_ON_MATCH ( ( unsigned portLONG ) 0x02 )
/* Constants required to setup the VIC for the tick ISR. */
#define portTIMER_VIC_CHANNEL ( ( unsigned portLONG ) 0x0004 )
#define portTIMER_VIC_CHANNEL_BIT ( ( unsigned portLONG ) 0x0010 )
#define portTIMER_VIC_ENABLE ( ( unsigned portLONG ) 0x0020 )
/*-----------------------------------------------------------*/
/* Setup the timer to generate the tick interrupts. */
static void prvSetupTimerInterrupt( void );
/*
* The scheduler can only be started from ARM mode, so
* vPortISRStartFirstSTask() is defined in portISR.c.
*/
extern void vPortISRStartFirstTask( void );
/*-----------------------------------------------------------*/
/*
* Initialise the stack of a task to look exactly as if a call to
* portSAVE_CONTEXT had been called.
*
* See header file for description.
*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{
portSTACK_TYPE *pxOriginalTOS;
pxOriginalTOS = pxTopOfStack;
/* Setup the initial stack of the task. The stack is set exactly as
expected by the portRESTORE_CONTEXT() macro. */
/* First on the stack is the return address - which in this case is the
start of the task. The offset is added to make the return address appear
as it would within an IRQ ISR. */
*pxTopOfStack = ( portSTACK_TYPE ) pxCode + portINSTRUCTION_SIZE;
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x00000000; /* R14 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) pxOriginalTOS; /* Stack used when task starts goes in R13. */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x12121212; /* R12 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x11111111; /* R11 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x10101010; /* R10 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x09090909; /* R9 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x08080808; /* R8 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x07070707; /* R7 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x06060606; /* R6 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x05050505; /* R5 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x04040404; /* R4 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x03030303; /* R3 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x02020202; /* R2 */
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x01010101; /* R1 */
pxTopOfStack--;
/* When the task starts is will expect to find the function parameter in
R0. */
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
pxTopOfStack--;
/* The last thing onto the stack is the status register, which is set for
system mode, with interrupts enabled. */
*pxTopOfStack = ( portSTACK_TYPE ) portINITIAL_SPSR;
#ifdef THUMB_INTERWORK
{
/* We want the task to start in thumb mode. */
*pxTopOfStack |= portTHUMB_MODE_BIT;
}
#endif
pxTopOfStack--;
/* Some optimisation levels use the stack differently to others. This
means the interrupt flags cannot always be stored on the stack and will
instead be stored in a variable, which is then saved as part of the
tasks context. */
*pxTopOfStack = portNO_CRITICAL_SECTION_NESTING;
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
portBASE_TYPE xPortStartScheduler( void )
{
/* Start the timer that generates the tick ISR. Interrupts are disabled
here already. */
prvSetupTimerInterrupt();
/* Start the first task. */
vPortISRStartFirstTask();
/* Should not get here! */
return 0;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the ARM port will require this function as there
is nothing to return to. */
}
/*-----------------------------------------------------------*/
/*
* Setup the timer 0 to generate the tick interrupts at the required frequency.
*/
static void prvSetupTimerInterrupt( void )
{
unsigned portLONG ulCompareMatch;
PCLKSEL0 = (PCLKSEL0 & (~(0x3<<2))) | (0x01 << 2);
T0TCR = 2; /* Stop and reset the timer */
T0CTCR = 0; /* Timer mode */
/* A 1ms tick does not require the use of the timer prescale. This is
defaulted to zero but can be used if necessary. */
T0PR = portPRESCALE_VALUE;
/* Calculate the match value required for our wanted tick rate. */
ulCompareMatch = configCPU_CLOCK_HZ / configTICK_RATE_HZ;
/* Protect against divide by zero. Using an if() statement still results
in a warning - hence the #if. */
#if portPRESCALE_VALUE != 0
{
ulCompareMatch /= ( portPRESCALE_VALUE + 1 );
}
#endif
T0MR1 = ulCompareMatch;
/* Generate tick with timer 0 compare match. */
T0MCR = (3 << 3); /* Reset timer on match and generate interrupt */
/* Setup the VIC for the timer. */
VICIntEnable = 0x00000010;
/* The ISR installed depends on whether the preemptive or cooperative
scheduler is being used. */
#if configUSE_PREEMPTION == 1
{
extern void ( vPreemptiveTick )( void );
VICVectAddr4 = ( portLONG ) vPreemptiveTick;
}
#else
{
extern void ( vNonPreemptiveTick )( void );
VICVectAddr4 = ( portLONG ) vNonPreemptiveTick;
}
#endif
VICVectCntl4 = 1;
/* Start the timer - interrupts are disabled when this function is called
so it is okay to do this here. */
T0TCR = portENABLE_TIMER;
}
/*-----------------------------------------------------------*/
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/GCC/ARM7_LPC23xx/portISR.c
+217
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@@ -0,0 +1,217 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
***************************************************************************
*/
/*-----------------------------------------------------------
* Components that can be compiled to either ARM or THUMB mode are
* contained in port.c The ISR routines, which can only be compiled
* to ARM mode, are contained in this file.
*----------------------------------------------------------*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Constants required to handle interrupts. */
#define portTIMER_MATCH_ISR_BIT ( ( unsigned portCHAR ) 0x01 )
#define portCLEAR_VIC_INTERRUPT ( ( unsigned portLONG ) 0 )
/* Constants required to handle critical sections. */
#define portNO_CRITICAL_NESTING ( ( unsigned portLONG ) 0 )
volatile unsigned portLONG ulCriticalNesting = 9999UL;
/*-----------------------------------------------------------*/
/* ISR to handle manual context switches (from a call to taskYIELD()). */
void vPortYieldProcessor( void ) __attribute__((interrupt("SWI"), naked));
/*
* The scheduler can only be started from ARM mode, hence the inclusion of this
* function here.
*/
void vPortISRStartFirstTask( void );
/*-----------------------------------------------------------*/
void vPortISRStartFirstTask( void )
{
/* Simply start the scheduler. This is included here as it can only be
called from ARM mode. */
portRESTORE_CONTEXT();
}
/*-----------------------------------------------------------*/
/*
* Called by portYIELD() or taskYIELD() to manually force a context switch.
*
* When a context switch is performed from the task level the saved task
* context is made to look as if it occurred from within the tick ISR. This
* way the same restore context function can be used when restoring the context
* saved from the ISR or that saved from a call to vPortYieldProcessor.
*/
void vPortYieldProcessor( void )
{
/* Within an IRQ ISR the link register has an offset from the true return
address, but an SWI ISR does not. Add the offset manually so the same
ISR return code can be used in both cases. */
asm volatile ( "ADD LR, LR, #4" );
/* Perform the context switch. First save the context of the current task. */
portSAVE_CONTEXT();
/* Find the highest priority task that is ready to run. */
vTaskSwitchContext();
/* Restore the context of the new task. */
portRESTORE_CONTEXT();
}
/*-----------------------------------------------------------*/
/*
* The ISR used for the scheduler tick depends on whether the cooperative or
* the preemptive scheduler is being used.
*/
#if configUSE_PREEMPTION == 0
/* The cooperative scheduler requires a normal IRQ service routine to
simply increment the system tick. */
void vNonPreemptiveTick( void ) __attribute__ ((interrupt ("IRQ")));
void vNonPreemptiveTick( void )
{
vTaskIncrementTick();
T0IR = 2;
VICVectAddr = portCLEAR_VIC_INTERRUPT;
}
#else
/* The preemptive scheduler is defined as "naked" as the full context is
saved on entry as part of the context switch. */
void vPreemptiveTick( void ) __attribute__((naked));
void vPreemptiveTick( void )
{
/* Save the context of the interrupted task. */
portSAVE_CONTEXT();
/* Increment the RTOS tick count, then look for the highest priority
task that is ready to run. */
vTaskIncrementTick();
vTaskSwitchContext();
/* Ready for the next interrupt. */
T0IR = 2;
VICVectAddr = portCLEAR_VIC_INTERRUPT;
/* Restore the context of the new task. */
portRESTORE_CONTEXT();
}
#endif
/*-----------------------------------------------------------*/
/*
* The interrupt management utilities can only be called from ARM mode. When
* THUMB_INTERWORK is defined the utilities are defined as functions here to
* ensure a switch to ARM mode. When THUMB_INTERWORK is not defined then
* the utilities are defined as macros in portmacro.h - as per other ports.
*/
#ifdef THUMB_INTERWORK
void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));
void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));
void vPortDisableInterruptsFromThumb( void )
{
asm volatile (
"STMDB SP!, {R0} \n\t" /* Push R0. */
"MRS R0, CPSR \n\t" /* Get CPSR. */
"ORR R0, R0, #0xC0 \n\t" /* Disable IRQ, FIQ. */
"MSR CPSR, R0 \n\t" /* Write back modified value. */
"LDMIA SP!, {R0} \n\t" /* Pop R0. */
"BX R14" ); /* Return back to thumb. */
}
void vPortEnableInterruptsFromThumb( void )
{
asm volatile (
"STMDB SP!, {R0} \n\t" /* Push R0. */
"MRS R0, CPSR \n\t" /* Get CPSR. */
"BIC R0, R0, #0xC0 \n\t" /* Enable IRQ, FIQ. */
"MSR CPSR, R0 \n\t" /* Write back modified value. */
"LDMIA SP!, {R0} \n\t" /* Pop R0. */
"BX R14" ); /* Return back to thumb. */
}
#endif /* THUMB_INTERWORK */
/* The code generated by the GCC compiler uses the stack in different ways at
different optimisation levels. The interrupt flags can therefore not always
be saved to the stack. Instead the critical section nesting level is stored
in a variable, which is then saved as part of the stack context. */
void vPortEnterCritical( void )
{
/* Disable interrupts as per portDISABLE_INTERRUPTS(); */
asm volatile (
"STMDB SP!, {R0} \n\t" /* Push R0. */
"MRS R0, CPSR \n\t" /* Get CPSR. */
"ORR R0, R0, #0xC0 \n\t" /* Disable IRQ, FIQ. */
"MSR CPSR, R0 \n\t" /* Write back modified value. */
"LDMIA SP!, {R0}" ); /* Pop R0. */
/* Now interrupts are disabled ulCriticalNesting can be accessed
directly. Increment ulCriticalNesting to keep a count of how many times
portENTER_CRITICAL() has been called. */
ulCriticalNesting++;
}
void vPortExitCritical( void )
{
if( ulCriticalNesting > portNO_CRITICAL_NESTING )
{
/* Decrement the nesting count as we are leaving a critical section. */
ulCriticalNesting--;
/* If the nesting level has reached zero then interrupts should be
re-enabled. */
if( ulCriticalNesting == portNO_CRITICAL_NESTING )
{
/* Enable interrupts as per portEXIT_CRITICAL(). */
asm volatile (
"STMDB SP!, {R0} \n\t" /* Push R0. */
"MRS R0, CPSR \n\t" /* Get CPSR. */
"BIC R0, R0, #0xC0 \n\t" /* Enable IRQ, FIQ. */
"MSR CPSR, R0 \n\t" /* Write back modified value. */
"LDMIA SP!, {R0}" ); /* Pop R0. */
}
}
}
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/GCC/ARM7_LPC23xx/portmacro.h
+250
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/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
***************************************************************************
*/
/*
Changes from V3.2.3
+ Modified portENTER_SWITCHING_ISR() to allow use with GCC V4.0.1.
Changes from V3.2.4
+ Removed the use of the %0 parameter within the assembler macros and
replaced them with hard coded registers. This will ensure the
assembler does not select the link register as the temp register as
was occasionally happening previously.
+ The assembler statements are now included in a single asm block rather
than each line having its own asm block.
Changes from V4.5.0
+ Removed the portENTER_SWITCHING_ISR() and portEXIT_SWITCHING_ISR() macros
and replaced them with portYIELD_FROM_ISR() macro. Application code
should now make use of the portSAVE_CONTEXT() and portRESTORE_CONTEXT()
macros as per the V4.5.1 demo code.
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
#ifdef __cplusplus
extern "C" {
#endif
/*-----------------------------------------------------------
* Port specific definitions.
*
* The settings in this file configure FreeRTOS correctly for the
* given hardware and compiler.
*
* These settings should not be altered.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT short
#define portSTACK_TYPE unsigned portLONG
#define portBASE_TYPE portLONG
#if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType;
#define portMAX_DELAY ( portTickType ) 0xffff
#else
typedef unsigned portLONG portTickType;
#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/
/* Architecture specifics. */
#define portSTACK_GROWTH ( -1 )
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT 4
#define portNOP() asm volatile ( "NOP" );
/*-----------------------------------------------------------*/
/* Scheduler utilities. */
/*
* portRESTORE_CONTEXT, portRESTORE_CONTEXT, portENTER_SWITCHING_ISR
* and portEXIT_SWITCHING_ISR can only be called from ARM mode, but
* are included here for efficiency. An attempt to call one from
* THUMB mode code will result in a compile time error.
*/
// \TODO BIJWERKEN? Er waren problemen bij de CAN ISR, waar ISR_ENTRY in plaats woord gebruikt
#define portRESTORE_CONTEXT() \
{ \
extern volatile void * volatile pxCurrentTCB; \
extern volatile unsigned portLONG ulCriticalNesting; \
\
/* Set the LR to the task stack. */ \
asm volatile ( \
"LDR R0, =pxCurrentTCB \n\t" \
"LDR R0, [R0] \n\t" \
"LDR LR, [R0] \n\t" \
\
/* The critical nesting depth is the first item on the stack. */ \
/* Load it into the ulCriticalNesting variable. */ \
"LDR R0, =ulCriticalNesting \n\t" \
"LDMFD LR!, {R1} \n\t" \
"STR R1, [R0] \n\t" \
\
/* Get the SPSR from the stack. */ \
"LDMFD LR!, {R0} \n\t" \
"MSR SPSR, R0 \n\t" \
\
/* Restore all system mode registers for the task. */ \
"LDMFD LR, {R0-R14}^ \n\t" \
"NOP \n\t" \
\
/* Restore the return address. */ \
"LDR LR, [LR, #+60] \n\t" \
\
/* And return - correcting the offset in the LR to obtain the */ \
/* correct address. */ \
"SUBS PC, LR, #4 \n\t" \
); \
( void ) ulCriticalNesting; \
( void ) pxCurrentTCB; \
}
/*-----------------------------------------------------------*/
// \TODO BIJWERKEN? Er waren problemen bij de CAN ISR, waar ISR_EXIT in plaats woord gebruikt
#define portSAVE_CONTEXT() \
{ \
extern volatile void * volatile pxCurrentTCB; \
extern volatile unsigned portLONG ulCriticalNesting; \
\
/* Push R0 as we are going to use the register. */ \
asm volatile ( \
"STMDB SP!, {R0} \n\t" \
\
/* Set R0 to point to the task stack pointer. */ \
"STMDB SP,{SP}^ \n\t" \
"NOP \n\t" \
"SUB SP, SP, #4 \n\t" \
"LDMIA SP!,{R0} \n\t" \
\
/* Push the return address onto the stack. */ \
"STMDB R0!, {LR} \n\t" \
\
/* Now we have saved LR we can use it instead of R0. */ \
"MOV LR, R0 \n\t" \
\
/* Pop R0 so we can save it onto the system mode stack. */ \
"LDMIA SP!, {R0} \n\t" \
\
/* Push all the system mode registers onto the task stack. */ \
"STMDB LR,{R0-LR}^ \n\t" \
"NOP \n\t" \
"SUB LR, LR, #60 \n\t" \
\
/* Push the SPSR onto the task stack. */ \
"MRS R0, SPSR \n\t" \
"STMDB LR!, {R0} \n\t" \
\
"LDR R0, =ulCriticalNesting \n\t" \
"LDR R0, [R0] \n\t" \
"STMDB LR!, {R0} \n\t" \
\
/* Store the new top of stack for the task. */ \
"LDR R0, =pxCurrentTCB \n\t" \
"LDR R0, [R0] \n\t" \
"STR LR, [R0] \n\t" \
); \
( void ) ulCriticalNesting; \
( void ) pxCurrentTCB; \
}
#define portYIELD_FROM_ISR() vTaskSwitchContext()
#define portYIELD() asm volatile ( "SWI" )
/*-----------------------------------------------------------*/
/* Critical section management. */
/*
* The interrupt management utilities can only be called from ARM mode. When
* THUMB_INTERWORK is defined the utilities are defined as functions in
* portISR.c to ensure a switch to ARM mode. When THUMB_INTERWORK is not
* defined then the utilities are defined as macros here - as per other ports.
*/
#ifdef THUMB_INTERWORK
extern void vPortDisableInterruptsFromThumb( void ) __attribute__ ((naked));
extern void vPortEnableInterruptsFromThumb( void ) __attribute__ ((naked));
#define portDISABLE_INTERRUPTS() vPortDisableInterruptsFromThumb()
#define portENABLE_INTERRUPTS() vPortEnableInterruptsFromThumb()
#else
#define portDISABLE_INTERRUPTS() \
asm volatile ( \
"STMDB SP!, {R0} \n\t" /* Push R0. */ \
"MRS R0, CPSR \n\t" /* Get CPSR. */ \
"ORR R0, R0, #0xC0 \n\t" /* Disable IRQ, FIQ. */ \
"MSR CPSR, R0 \n\t" /* Write back modified value. */ \
"LDMIA SP!, {R0} " ) /* Pop R0. */
#define portENABLE_INTERRUPTS() \
asm volatile ( \
"STMDB SP!, {R0} \n\t" /* Push R0. */ \
"MRS R0, CPSR \n\t" /* Get CPSR. */ \
"BIC R0, R0, #0xC0 \n\t" /* Enable IRQ, FIQ. */ \
"MSR CPSR, R0 \n\t" /* Write back modified value. */ \
"LDMIA SP!, {R0} " ) /* Pop R0. */
#endif /* THUMB_INTERWORK */
extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );
#define portENTER_CRITICAL() vPortEnterCritical();
#define portEXIT_CRITICAL() vPortExitCritical();
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
#ifdef __cplusplus
}
#endif
#endif /* PORTMACRO_H */
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/MemMang/heap_1.c
+141
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@@ -0,0 +1,141 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*
Changes between V2.5.1 and V2.5.1
+ The memory pool has been defined within a struct to ensure correct memory
alignment on 32bit systems.
Changes between V2.6.1 and V3.0.0
+ An overflow check has been added to ensure the next free byte variable
does not wrap around.
*/
/*
* The simplest possible implementation of pvPortMalloc(). Note that this
* implementation does NOT allow allocated memory to be freed again.
*
* See heap_2.c and heap_3.c for alternative implementations, and the memory
* management pages of http://www.FreeRTOS.org for more information.
*/
#include <stdlib.h>
#include "FreeRTOS.h"
#include "task.h"
/* Setup the correct byte alignment mask for the defined byte alignment. */
#if portBYTE_ALIGNMENT == 8
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0007 )
#endif
#if portBYTE_ALIGNMENT == 4
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0003 )
#endif
#if portBYTE_ALIGNMENT == 2
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0001 )
#endif
#if portBYTE_ALIGNMENT == 1
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0000 )
#endif
#ifndef heapBYTE_ALIGNMENT_MASK
#error "Invalid portBYTE_ALIGNMENT definition"
#endif
/* Allocate the memory for the heap. The struct is used to force byte
alignment without using any non-portable code. */
static struct xRTOS_HEAP
{
unsigned portLONG ulDummy;
unsigned portCHAR ucHeap[ configTOTAL_HEAP_SIZE ];
} xHeap;
static size_t xNextFreeByte = ( size_t ) 0;
/*-----------------------------------------------------------*/
void *pvPortMalloc( size_t xWantedSize )
{
void *pvReturn = NULL;
/* Ensure that blocks are always aligned to the required number of bytes. */
#if portBYTE_ALIGNMENT != 1
if( xWantedSize & heapBYTE_ALIGNMENT_MASK )
{
/* Byte alignment required. */
xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & heapBYTE_ALIGNMENT_MASK ) );
}
#endif
vTaskSuspendAll();
{
/* Check there is enough room left for the allocation. */
if( ( ( xNextFreeByte + xWantedSize ) < configTOTAL_HEAP_SIZE ) &&
( ( xNextFreeByte + xWantedSize ) > xNextFreeByte ) )/* Check for overflow. */
{
/* Return the next free byte then increment the index past this
block. */
pvReturn = &( xHeap.ucHeap[ xNextFreeByte ] );
xNextFreeByte += xWantedSize;
}
}
xTaskResumeAll();
return pvReturn;
}
/*-----------------------------------------------------------*/
void vPortFree( void *pv )
{
/* Memory cannot be freed using this scheme. See heap_2.c and heap_3.c
for alternative implementations, and the memory management pages of
http://www.FreeRTOS.org for more information. */
( void ) pv;
}
/*-----------------------------------------------------------*/
void vPortInitialiseBlocks( void )
{
/* Only required when static memory is not cleared. */
xNextFreeByte = ( size_t ) 0;
}
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/MemMang/heap_2.c
+287
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@@ -0,0 +1,287 @@
/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*
* A sample implementation of pvPortMalloc() and vPortFree() that permits
* allocated blocks to be freed, but does not combine adjacent free blocks
* into a single larger block.
*
* See heap_1.c and heap_3.c for alternative implementations, and the memory
* management pages of http://www.FreeRTOS.org for more information.
*/
#include <stdlib.h>
#include "FreeRTOS.h"
#include "task.h"
/* Setup the correct byte alignment mask for the defined byte alignment. */
#if portBYTE_ALIGNMENT == 8
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0007 )
#endif
#if portBYTE_ALIGNMENT == 4
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0003 )
#endif
#if portBYTE_ALIGNMENT == 2
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0001 )
#endif
#if portBYTE_ALIGNMENT == 1
#define heapBYTE_ALIGNMENT_MASK ( ( size_t ) 0x0000 )
#endif
#ifndef heapBYTE_ALIGNMENT_MASK
#error "Invalid portBYTE_ALIGNMENT definition"
#endif
/* Allocate the memory for the heap. The struct is used to force byte
alignment without using any non-portable code. */
static struct xRTOS_HEAP
{
unsigned portLONG ulDummy;
unsigned portCHAR ucHeap[ configTOTAL_HEAP_SIZE ];
} xHeap __attribute__ ((section (".ethram"))); // \TODO DID RAM CHANGE HERE
//} xHeap __attribute__ ((section (".bss")));
/* Define the linked list structure. This is used to link free blocks in order
of their size. */
typedef struct A_BLOCK_LINK
{
struct A_BLOCK_LINK *pxNextFreeBlock; /*<< The next free block in the list. */
size_t xBlockSize; /*<< The size of the free block. */
} xBlockLink;
static const unsigned portSHORT heapSTRUCT_SIZE = ( sizeof( xBlockLink ) + ( sizeof( xBlockLink ) % portBYTE_ALIGNMENT ) );
#define heapMINIMUM_BLOCK_SIZE ( ( size_t ) ( heapSTRUCT_SIZE * 2 ) )
/* Create a couple of list links to mark the start and end of the list. */
static xBlockLink xStart, xEnd;
/* STATIC FUNCTIONS ARE DEFINED AS MACROS TO MINIMIZE THE FUNCTION CALL DEPTH. */
/*
* Insert a block into the list of free blocks - which is ordered by size of
* the block. Small blocks at the start of the list and large blocks at the end
* of the list.
*/
#define prvInsertBlockIntoFreeList( pxBlockToInsert ) \
{ \
xBlockLink *pxIterator; \
size_t xBlockSize; \
\
xBlockSize = pxBlockToInsert->xBlockSize; \
\
/* Iterate through the list until a block is found that has a larger size */ \
/* than the block we are inserting. */ \
for( pxIterator = &xStart; pxIterator->pxNextFreeBlock->xBlockSize < xBlockSize; pxIterator = pxIterator->pxNextFreeBlock ) \
{ \
/* There is nothing to do here - just iterate to the correct position. */ \
} \
\
/* Update the list to include the block being inserted in the correct */ \
/* position. */ \
pxBlockToInsert->pxNextFreeBlock = pxIterator->pxNextFreeBlock; \
pxIterator->pxNextFreeBlock = pxBlockToInsert; \
}
/*-----------------------------------------------------------*/
#define prvHeapInit() \
{ \
xBlockLink *pxFirstFreeBlock; \
\
/* xStart is used to hold a pointer to the first item in the list of free */ \
/* blocks. The void cast is used to prevent compiler warnings. */ \
xStart.pxNextFreeBlock = ( void * ) xHeap.ucHeap; \
xStart.xBlockSize = ( size_t ) 0; \
\
/* xEnd is used to mark the end of the list of free blocks. */ \
xEnd.xBlockSize = configTOTAL_HEAP_SIZE; \
xEnd.pxNextFreeBlock = NULL; \
\
/* To start with there is a single free block that is sized to take up the \
entire heap space. */ \
pxFirstFreeBlock = ( void * ) xHeap.ucHeap; \
pxFirstFreeBlock->xBlockSize = configTOTAL_HEAP_SIZE; \
pxFirstFreeBlock->pxNextFreeBlock = &xEnd; \
}
/*-----------------------------------------------------------*/
extern void serWrite (
int device,
short length, /**< Lengh of data in bytes */
char * data /**< Pointer to data */
);
//int allocMemorySizes[100];
int nrOfAllocs = 0;
int totalMemoryAllocs = 0;
int mallocerror = 0;
void *pvPortMalloc( size_t xWantedSize )
{
xBlockLink *pxBlock, *pxPreviousBlock, *pxNewBlockLink;
static portBASE_TYPE xHeapHasBeenInitialised = pdFALSE;
void *pvReturn = NULL;
nrOfAllocs++;
totalMemoryAllocs+= xWantedSize;
vTaskSuspendAll();
{
/* If this is the first call to malloc then the heap will require
initialisation to setup the list of free blocks. */
if( xHeapHasBeenInitialised == pdFALSE )
{
prvHeapInit();
xHeapHasBeenInitialised = pdTRUE;
}
/* The wanted size is increased so it can contain a xBlockLink
structure in addition to the requested amount of bytes. */
if( xWantedSize > 0 )
{
xWantedSize += heapSTRUCT_SIZE;
/* Ensure that blocks are always aligned to the required number of bytes. */
if( xWantedSize & heapBYTE_ALIGNMENT_MASK )
{
/* Byte alignment required. */
xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & heapBYTE_ALIGNMENT_MASK ) );
}
}
if( ( xWantedSize > 0 ) && ( xWantedSize < configTOTAL_HEAP_SIZE ) )
{
/* Blocks are stored in byte order - traverse the list from the start
(smallest) block until one of adequate size is found. */
pxPreviousBlock = &xStart;
pxBlock = xStart.pxNextFreeBlock;
while( ( pxBlock->xBlockSize < xWantedSize ) && ( pxBlock->pxNextFreeBlock ) )
{
pxPreviousBlock = pxBlock;
pxBlock = pxBlock->pxNextFreeBlock;
}
/* If we found the end marker then a block of adequate size was not found. */
if( pxBlock != &xEnd )
{
/* Return the memory space - jumping over the xBlockLink structure
at its start. */
pvReturn = ( void * ) ( ( ( unsigned portCHAR * ) pxPreviousBlock->pxNextFreeBlock ) + heapSTRUCT_SIZE );
/* This block is being returned for use so must be taken our of the
list of free blocks. */
pxPreviousBlock->pxNextFreeBlock = pxBlock->pxNextFreeBlock;
/* If the block is larger than required it can be split into two. */
if( ( pxBlock->xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE )
{
/* This block is to be split into two. Create a new block
following the number of bytes requested. The void cast is
used to prevent byte alignment warnings from the compiler. */
pxNewBlockLink = ( void * ) ( ( ( unsigned portCHAR * ) pxBlock ) + xWantedSize );
/* Calculate the sizes of two blocks split from the single
block. */
pxNewBlockLink->xBlockSize = pxBlock->xBlockSize - xWantedSize;
pxBlock->xBlockSize = xWantedSize;
/* Insert the new block into the list of free blocks. */
prvInsertBlockIntoFreeList( ( pxNewBlockLink ) );
}
}
}
}
xTaskResumeAll();
if (pvReturn == 0)
{
mallocerror++;
serWrite(1, sizeof("memory error"), "memory error");
}
return pvReturn;
}
/*-----------------------------------------------------------*/
void vPortFree( void *pv )
{
unsigned portCHAR *puc = ( unsigned portCHAR * ) pv;
xBlockLink *pxLink;
if( pv )
{
/* The memory being freed will have an xBlockLink structure immediately
before it. */
puc -= heapSTRUCT_SIZE;
/* This casting is to keep the compiler from issuing warnings. */
pxLink = ( void * ) puc;
nrOfAllocs--;
totalMemoryAllocs -= pxLink->xBlockSize;
vTaskSuspendAll();
{
/* Add this block to the list of free blocks. */
prvInsertBlockIntoFreeList( ( ( xBlockLink * ) pxLink ) );
}
xTaskResumeAll();
}
}
/*-----------------------------------------------------------*/
int vMemAvail()
{
int totalMemAvail = 0;
xBlockLink *pxIterator = &xStart;
vTaskSuspendAll();
{
while (pxIterator->pxNextFreeBlock != &xEnd)
{
totalMemAvail += pxIterator->pxNextFreeBlock->xBlockSize;
pxIterator = pxIterator->pxNextFreeBlock;
}
}
xTaskResumeAll();
return totalMemAvail;
}
/*-----------------------------------------------------------*/
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/MemMang/heap_3.c
+83
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/*
FreeRTOS.org V4.6.1 - Copyright (C) 2003-2007 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
See http://www.FreeRTOS.org for documentation, latest information, license
and contact details. Please ensure to read the configuration and relevant
port sections of the online documentation.
Also see http://www.SafeRTOS.com a version that has been certified for use
in safety critical systems, plus commercial licensing, development and
support options.
***************************************************************************
*/
/*
* Implementation of pvPortMalloc() and vPortFree() that relies on the
* compilers own malloc() and free() implementations.
*
* This file can only be used if the linker is configured to to generate
* a heap memory area.
*
* See heap_2.c and heap_1.c for alternative implementations, and the memory
* management pages of http://www.FreeRTOS.org for more information.
*/
#include <stdlib.h>
#include "FreeRTOS.h"
#include "task.h"
/*-----------------------------------------------------------*/
void *pvPortMalloc( size_t xWantedSize )
{
void *pvReturn;
vTaskSuspendAll();
{
pvReturn = malloc( xWantedSize );
}
xTaskResumeAll();
return pvReturn;
}
/*-----------------------------------------------------------*/
void vPortFree( void *pv )
{
if( pv )
{
vTaskSuspendAll();
{
free( pv );
}
xTaskResumeAll();
}
}
Tester/SW/Eclipse/lib/FreeRTOS/Source/portable/readme.txt
+19
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Each real time kernel port consists of three files that contain the core kernel
components and are common to every port, and one or more files that are
specific to a particular microcontroller and/or compiler.
+ The FreeRTOS/Source/Portable/MemMang directory contains the three sample
memory allocators as described on the http://www.FreeRTOS.org WEB site.
+ The other directories each contain files specific to a particular
microcontroller or compiler.
For example, if you are interested in the GCC port for the ATMega323
microcontroller then the port specific files are contained in
FreeRTOS/Source/Portable/GCC/ATMega323 directory. If this is the only
port you are interested in then all the other directories can be
ignored.
Tester/SW/Eclipse/lib/FreeRTOS/Source/queue.c
+1061
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Tester/SW/Eclipse/lib/FreeRTOS/Source/readme.txt
+15
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Each real time kernel port consists of three files that contain the core kernel
components and are common to every port, and one or more files that are
specific to a particular microcontroller and or compiler.
+ The FreeRTOS/Source directory contains the three files that are common to
every port. The kernel is contained within these three files.
+ The FreeRTOS/Source/Portable directory contains the files that are specific to
a particular microcontroller and or compiler.
+ The FreeRTOS/Source/include directory contains the real time kernel header
files.
See the readme file in the FreeRTOS/Source/Portable directory for more
information.
Tester/SW/Eclipse/lib/FreeRTOS/Source/tasks.c
+2036
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