From d71e244dffc15cd3fbabbe6e710a7a20ea09c413 Mon Sep 17 00:00:00 2001 From: hathach Date: Mon, 4 Feb 2013 16:07:42 +0700 Subject: add TUSB_CFG_HOST_ENUM_BUFFER_SIZE add enum buffer getting serious with osal_freeRTOS --- tests/test/support/FreeRTOS/Source/include/queue.h | 1302 ++++++++++++++++++++ 1 file changed, 1302 insertions(+) create mode 100644 tests/test/support/FreeRTOS/Source/include/queue.h (limited to 'tests/test/support/FreeRTOS/Source/include/queue.h') diff --git a/tests/test/support/FreeRTOS/Source/include/queue.h b/tests/test/support/FreeRTOS/Source/include/queue.h new file mode 100644 index 000000000..ef74d99ef --- /dev/null +++ b/tests/test/support/FreeRTOS/Source/include/queue.h @@ -0,0 +1,1302 @@ +/* + FreeRTOS V7.3.0 - Copyright (C) 2012 Real Time Engineers Ltd. + + FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT + http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. + + *************************************************************************** + * * + * FreeRTOS tutorial books are available in pdf and paperback. * + * Complete, revised, and edited pdf reference manuals are also * + * available. * + * * + * Purchasing FreeRTOS documentation will not only help you, by * + * ensuring you get running as quickly as possible and with an * + * in-depth knowledge of how to use FreeRTOS, it will also help * + * the FreeRTOS project to continue with its mission of providing * + * professional grade, cross platform, de facto standard solutions * + * for microcontrollers - completely free of charge! * + * * + * >>> See http://www.FreeRTOS.org/Documentation for details. <<< * + * * + * Thank you for using FreeRTOS, and thank you for your support! * + * * + *************************************************************************** + + + This file is part of the FreeRTOS distribution. + + FreeRTOS is free software; you can redistribute it and/or modify it under + the terms of the GNU General Public License (version 2) as published by the + Free Software Foundation AND MODIFIED BY the FreeRTOS exception. + >>>NOTE<<< The modification to the GPL is included to allow you to + distribute a combined work that includes FreeRTOS without being obliged to + provide the source code for proprietary components outside of the FreeRTOS + kernel. FreeRTOS 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 and the FreeRTOS license exception along with FreeRTOS; if not it + can be viewed here: http://www.freertos.org/a00114.html and also obtained + by writing to Richard Barry, contact details for whom are available on the + FreeRTOS WEB site. + + 1 tab == 4 spaces! + + *************************************************************************** + * * + * Having a problem? Start by reading the FAQ "My application does * + * not run, what could be wrong?" * + * * + * http://www.FreeRTOS.org/FAQHelp.html * + * * + *************************************************************************** + + + http://www.FreeRTOS.org - Documentation, training, latest versions, license + and contact details. + + http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, + including FreeRTOS+Trace - an indispensable productivity tool. + + Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell + the code with commercial support, indemnification, and middleware, under + the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also + provide a safety engineered and independently SIL3 certified version under + the SafeRTOS brand: http://www.SafeRTOS.com. +*/ + + +#ifndef QUEUE_H +#define QUEUE_H + +#ifndef INC_FREERTOS_H + #error "include FreeRTOS.h" must appear in source files before "include queue.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + + +#include "mpu_wrappers.h" + +/** + * Type by which queues are referenced. For example, a call to xQueueCreate + * returns (via a pointer parameter) an xQueueHandle variable that can then + * be used as a parameter to xQueueSend(), xQueueReceive(), etc. + */ +typedef void * xQueueHandle; + + +/* For internal use only. */ +#define queueSEND_TO_BACK ( 0 ) +#define queueSEND_TO_FRONT ( 1 ) + +/* For internal use only. These definitions *must* match those in queue.c. */ +#define queueQUEUE_TYPE_BASE ( 0U ) +#define queueQUEUE_TYPE_MUTEX ( 1U ) +#define queueQUEUE_TYPE_COUNTING_SEMAPHORE ( 2U ) +#define queueQUEUE_TYPE_BINARY_SEMAPHORE ( 3U ) +#define queueQUEUE_TYPE_RECURSIVE_MUTEX ( 4U ) + +/** + * queue. h + * 
+ xQueueHandle xQueueCreate(
+							  unsigned portBASE_TYPE uxQueueLength,
+							  unsigned portBASE_TYPE uxItemSize
+						  );
+ *
+ * + * Creates a new queue instance. This allocates the storage required by the + * new queue and returns a handle for the queue. + * + * @param uxQueueLength The maximum number of items that the queue can contain. + * + * @param uxItemSize The number of bytes each item in the queue will require. + * Items are queued by copy, not by reference, so this is the number of bytes + * that will be copied for each posted item. Each item on the queue must be + * the same size. + * + * @return If the queue is successfully create then a handle to the newly + * created queue is returned. If the queue cannot be created then 0 is + * returned. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ };
+
+ void vATask( void *pvParameters )
+ {
+ xQueueHandle xQueue1, xQueue2;
+
+	// Create a queue capable of containing 10 unsigned long values.
+	xQueue1 = xQueueCreate( 10, sizeof( unsigned long ) );
+	if( xQueue1 == 0 )
+	{
+		// Queue was not created and must not be used.
+	}
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue2 = xQueueCreate( 10, sizeof( struct AMessage * ) );
+	if( xQueue2 == 0 )
+	{
+		// Queue was not created and must not be used.
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueCreate xQueueCreate + * \ingroup QueueManagement + */ +#define xQueueCreate( uxQueueLength, uxItemSize ) xQueueGenericCreate( uxQueueLength, uxItemSize, queueQUEUE_TYPE_BASE ) + +/** + * queue. h + * 
+ portBASE_TYPE xQueueSendToToFront(
+								   xQueueHandle	xQueue,
+								   const void	*	pvItemToQueue,
+								   portTickType	xTicksToWait
+							   );
+ *
+ * + * This is a macro that calls xQueueGenericSend(). + * + * Post an item to the front of a queue. The item is queued by copy, not by + * reference. This function must not be called from an interrupt service + * routine. See xQueueSendFromISR () for an alternative which may be used + * in an ISR. + * + * @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 xTicksToWait The maximum amount of time the task should block + * waiting for space to become available on the queue, should it already + * be full. The call will return immediately if this is set to 0 and the + * queue is full. The time is defined in tick periods so the constant + * portTICK_RATE_MS should be used to convert to real time if this is required. + * + * @return pdTRUE if the item was successfully posted, otherwise errQUEUE_FULL. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ unsigned long ulVar = 10UL;
+
+ void vATask( void *pvParameters )
+ {
+ xQueueHandle xQueue1, xQueue2;
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 unsigned long values.
+	xQueue1 = xQueueCreate( 10, sizeof( unsigned long ) );
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue2 = xQueueCreate( 10, sizeof( struct AMessage * ) );
+
+	// ...
+
+	if( xQueue1 != 0 )
+	{
+		// Send an unsigned long.  Wait for 10 ticks for space to become
+		// available if necessary.
+		if( xQueueSendToFront( xQueue1, ( void * ) &ulVar, ( portTickType ) 10 ) != pdPASS )
+		{
+			// Failed to post the message, even after 10 ticks.
+		}
+	}
+
+	if( xQueue2 != 0 )
+	{
+		// Send a pointer to a struct AMessage object.  Don't block if the
+		// queue is already full.
+		pxMessage = & xMessage;
+		xQueueSendToFront( xQueue2, ( void * ) &pxMessage, ( portTickType ) 0 );
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueSend xQueueSend + * \ingroup QueueManagement + */ +#define xQueueSendToFront( xQueue, pvItemToQueue, xTicksToWait ) xQueueGenericSend( ( xQueue ), ( pvItemToQueue ), ( xTicksToWait ), queueSEND_TO_FRONT ) + +/** + * queue. h + * 
+ portBASE_TYPE xQueueSendToBack(
+								   xQueueHandle	xQueue,
+								   const	void	*	pvItemToQueue,
+								   portTickType	xTicksToWait
+							   );
+ *
+ * + * This is a macro that calls xQueueGenericSend(). + * + * Post an item to the back of a queue. The item is queued by copy, not by + * reference. This function must not be called from an interrupt service + * routine. See xQueueSendFromISR () for an alternative which may be used + * in an ISR. + * + * @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 xTicksToWait The maximum amount of time the task should block + * waiting for space to become available on the queue, should it already + * be full. The call will return immediately if this is set to 0 and the queue + * is full. The time is defined in tick periods so the constant + * portTICK_RATE_MS should be used to convert to real time if this is required. + * + * @return pdTRUE if the item was successfully posted, otherwise errQUEUE_FULL. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ unsigned long ulVar = 10UL;
+
+ void vATask( void *pvParameters )
+ {
+ xQueueHandle xQueue1, xQueue2;
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 unsigned long values.
+	xQueue1 = xQueueCreate( 10, sizeof( unsigned long ) );
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue2 = xQueueCreate( 10, sizeof( struct AMessage * ) );
+
+	// ...
+
+	if( xQueue1 != 0 )
+	{
+		// Send an unsigned long.  Wait for 10 ticks for space to become
+		// available if necessary.
+		if( xQueueSendToBack( xQueue1, ( void * ) &ulVar, ( portTickType ) 10 ) != pdPASS )
+		{
+			// Failed to post the message, even after 10 ticks.
+		}
+	}
+
+	if( xQueue2 != 0 )
+	{
+		// Send a pointer to a struct AMessage object.  Don't block if the
+		// queue is already full.
+		pxMessage = & xMessage;
+		xQueueSendToBack( xQueue2, ( void * ) &pxMessage, ( portTickType ) 0 );
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueSend xQueueSend + * \ingroup QueueManagement + */ +#define xQueueSendToBack( xQueue, pvItemToQueue, xTicksToWait ) xQueueGenericSend( ( xQueue ), ( pvItemToQueue ), ( xTicksToWait ), queueSEND_TO_BACK ) + +/** + * queue. h + * 
+ portBASE_TYPE xQueueSend(
+							  xQueueHandle xQueue,
+							  const void * pvItemToQueue,
+							  portTickType xTicksToWait
+						 );
+ *
+ * + * This is a macro that calls xQueueGenericSend(). It is included for + * backward compatibility with versions of FreeRTOS.org that did not + * include the xQueueSendToFront() and xQueueSendToBack() macros. It is + * equivalent to xQueueSendToBack(). + * + * Post an item on a queue. The item is queued by copy, not by reference. + * This function must not be called from an interrupt service routine. + * See xQueueSendFromISR () for an alternative which may be used in an ISR. + * + * @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 xTicksToWait The maximum amount of time the task should block + * waiting for space to become available on the queue, should it already + * be full. The call will return immediately if this is set to 0 and the + * queue is full. The time is defined in tick periods so the constant + * portTICK_RATE_MS should be used to convert to real time if this is required. + * + * @return pdTRUE if the item was successfully posted, otherwise errQUEUE_FULL. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ unsigned long ulVar = 10UL;
+
+ void vATask( void *pvParameters )
+ {
+ xQueueHandle xQueue1, xQueue2;
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 unsigned long values.
+	xQueue1 = xQueueCreate( 10, sizeof( unsigned long ) );
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue2 = xQueueCreate( 10, sizeof( struct AMessage * ) );
+
+	// ...
+
+	if( xQueue1 != 0 )
+	{
+		// Send an unsigned long.  Wait for 10 ticks for space to become
+		// available if necessary.
+		if( xQueueSend( xQueue1, ( void * ) &ulVar, ( portTickType ) 10 ) != pdPASS )
+		{
+			// Failed to post the message, even after 10 ticks.
+		}
+	}
+
+	if( xQueue2 != 0 )
+	{
+		// Send a pointer to a struct AMessage object.  Don't block if the
+		// queue is already full.
+		pxMessage = & xMessage;
+		xQueueSend( xQueue2, ( void * ) &pxMessage, ( portTickType ) 0 );
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueSend xQueueSend + * \ingroup QueueManagement + */ +#define xQueueSend( xQueue, pvItemToQueue, xTicksToWait ) xQueueGenericSend( ( xQueue ), ( pvItemToQueue ), ( xTicksToWait ), queueSEND_TO_BACK ) + + +/** + * queue. h + * 
+ portBASE_TYPE xQueueGenericSend(
+									xQueueHandle xQueue,
+									const void * pvItemToQueue,
+									portTickType xTicksToWait
+									portBASE_TYPE xCopyPosition
+								);
+ *
+ * + * It is preferred that the macros xQueueSend(), xQueueSendToFront() and + * xQueueSendToBack() are used in place of calling this function directly. + * + * Post an item on a queue. The item is queued by copy, not by reference. + * This function must not be called from an interrupt service routine. + * See xQueueSendFromISR () for an alternative which may be used in an ISR. + * + * @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 xTicksToWait The maximum amount of time the task should block + * waiting for space to become available on the queue, should it already + * be full. The call will return immediately if this is set to 0 and the + * queue is full. The time is defined in tick periods so the constant + * portTICK_RATE_MS should be used to convert to real time if this is required. + * + * @param xCopyPosition Can take the value queueSEND_TO_BACK to place the + * item at the back of the queue, or queueSEND_TO_FRONT to place the item + * at the front of the queue (for high priority messages). + * + * @return pdTRUE if the item was successfully posted, otherwise errQUEUE_FULL. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ unsigned long ulVar = 10UL;
+
+ void vATask( void *pvParameters )
+ {
+ xQueueHandle xQueue1, xQueue2;
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 unsigned long values.
+	xQueue1 = xQueueCreate( 10, sizeof( unsigned long ) );
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue2 = xQueueCreate( 10, sizeof( struct AMessage * ) );
+
+	// ...
+
+	if( xQueue1 != 0 )
+	{
+		// Send an unsigned long.  Wait for 10 ticks for space to become
+		// available if necessary.
+		if( xQueueGenericSend( xQueue1, ( void * ) &ulVar, ( portTickType ) 10, queueSEND_TO_BACK ) != pdPASS )
+		{
+			// Failed to post the message, even after 10 ticks.
+		}
+	}
+
+	if( xQueue2 != 0 )
+	{
+		// Send a pointer to a struct AMessage object.  Don't block if the
+		// queue is already full.
+		pxMessage = & xMessage;
+		xQueueGenericSend( xQueue2, ( void * ) &pxMessage, ( portTickType ) 0, queueSEND_TO_BACK );
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueSend xQueueSend + * \ingroup QueueManagement + */ +signed portBASE_TYPE xQueueGenericSend( xQueueHandle pxQueue, const void * const pvItemToQueue, portTickType xTicksToWait, portBASE_TYPE xCopyPosition ); + +/** + * queue. h + * 
+ portBASE_TYPE xQueuePeek(
+							 xQueueHandle xQueue,
+							 void *pvBuffer,
+							 portTickType xTicksToWait
+						 );
+ * + * This is a macro that calls the xQueueGenericReceive() function. + * + * Receive an item from a queue without removing the item from the queue. + * The item is received by copy so a buffer of adequate size must be + * provided. The number of bytes copied into the buffer was defined when + * the queue was created. + * + * Successfully received items remain on the queue so will be returned again + * by the next call, or a call to xQueueReceive(). + * + * This macro must not be used in an interrupt service routine. + * + * @param pxQueue The handle to the queue from which the item is to be + * received. + * + * @param pvBuffer Pointer to the buffer into which the received item will + * be copied. + * + * @param xTicksToWait The maximum amount of time the task should block + * waiting for an item to receive should the queue be empty at the time + * of the call. The time is defined in tick periods so the constant + * portTICK_RATE_MS should be used to convert to real time if this is required. + * xQueuePeek() will return immediately if xTicksToWait is 0 and the queue + * is empty. + * + * @return pdTRUE if an item was successfully received from the queue, + * otherwise pdFALSE. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ xQueueHandle xQueue;
+
+ // Task to create a queue and post a value.
+ void vATask( void *pvParameters )
+ {
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue = xQueueCreate( 10, sizeof( struct AMessage * ) );
+	if( xQueue == 0 )
+	{
+		// Failed to create the queue.
+	}
+
+	// ...
+
+	// Send a pointer to a struct AMessage object.  Don't block if the
+	// queue is already full.
+	pxMessage = & xMessage;
+	xQueueSend( xQueue, ( void * ) &pxMessage, ( portTickType ) 0 );
+
+	// ... Rest of task code.
+ }
+
+ // Task to peek the data from the queue.
+ void vADifferentTask( void *pvParameters )
+ {
+ struct AMessage *pxRxedMessage;
+
+	if( xQueue != 0 )
+	{
+		// Peek a message on the created queue.  Block for 10 ticks if a
+		// message is not immediately available.
+		if( xQueuePeek( xQueue, &( pxRxedMessage ), ( portTickType ) 10 ) )
+		{
+			// pcRxedMessage now points to the struct AMessage variable posted
+			// by vATask, but the item still remains on the queue.
+		}
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueReceive xQueueReceive + * \ingroup QueueManagement + */ +#define xQueuePeek( xQueue, pvBuffer, xTicksToWait ) xQueueGenericReceive( ( xQueue ), ( pvBuffer ), ( xTicksToWait ), pdTRUE ) + +/** + * queue. h + * 
+ portBASE_TYPE xQueueReceive(
+								 xQueueHandle xQueue,
+								 void *pvBuffer,
+								 portTickType xTicksToWait
+							);
+ * + * This is a macro that calls the xQueueGenericReceive() function. + * + * Receive an item from a queue. The item is received by copy so a buffer of + * adequate size must be provided. The number of bytes copied into the buffer + * was defined when the queue was created. + * + * Successfully received items are removed from the queue. + * + * This function must not be used in an interrupt service routine. See + * xQueueReceiveFromISR for an alternative that can. + * + * @param pxQueue The handle to the queue from which the item is to be + * received. + * + * @param pvBuffer Pointer to the buffer into which the received item will + * be copied. + * + * @param xTicksToWait The maximum amount of time the task should block + * waiting for an item to receive should the queue be empty at the time + * of the call. xQueueReceive() will return immediately if xTicksToWait + * is zero and the queue is empty. The time is defined in tick periods so the + * constant portTICK_RATE_MS should be used to convert to real time if this is + * required. + * + * @return pdTRUE if an item was successfully received from the queue, + * otherwise pdFALSE. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ xQueueHandle xQueue;
+
+ // Task to create a queue and post a value.
+ void vATask( void *pvParameters )
+ {
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue = xQueueCreate( 10, sizeof( struct AMessage * ) );
+	if( xQueue == 0 )
+	{
+		// Failed to create the queue.
+	}
+
+	// ...
+
+	// Send a pointer to a struct AMessage object.  Don't block if the
+	// queue is already full.
+	pxMessage = & xMessage;
+	xQueueSend( xQueue, ( void * ) &pxMessage, ( portTickType ) 0 );
+
+	// ... Rest of task code.
+ }
+
+ // Task to receive from the queue.
+ void vADifferentTask( void *pvParameters )
+ {
+ struct AMessage *pxRxedMessage;
+
+	if( xQueue != 0 )
+	{
+		// Receive a message on the created queue.  Block for 10 ticks if a
+		// message is not immediately available.
+		if( xQueueReceive( xQueue, &( pxRxedMessage ), ( portTickType ) 10 ) )
+		{
+			// pcRxedMessage now points to the struct AMessage variable posted
+			// by vATask.
+		}
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueReceive xQueueReceive + * \ingroup QueueManagement + */ +#define xQueueReceive( xQueue, pvBuffer, xTicksToWait ) xQueueGenericReceive( ( xQueue ), ( pvBuffer ), ( xTicksToWait ), pdFALSE ) + + +/** + * queue. h + * 
+ portBASE_TYPE xQueueGenericReceive(
+									   xQueueHandle	xQueue,
+									   void	*pvBuffer,
+									   portTickType	xTicksToWait
+									   portBASE_TYPE	xJustPeek
+									);
+ * + * It is preferred that the macro xQueueReceive() be used rather than calling + * this function directly. + * + * Receive an item from a queue. The item is received by copy so a buffer of + * adequate size must be provided. The number of bytes copied into the buffer + * was defined when the queue was created. + * + * This function must not be used in an interrupt service routine. See + * xQueueReceiveFromISR for an alternative that can. + * + * @param pxQueue The handle to the queue from which the item is to be + * received. + * + * @param pvBuffer Pointer to the buffer into which the received item will + * be copied. + * + * @param xTicksToWait The maximum amount of time the task should block + * waiting for an item to receive should the queue be empty at the time + * of the call. The time is defined in tick periods so the constant + * portTICK_RATE_MS should be used to convert to real time if this is required. + * xQueueGenericReceive() will return immediately if the queue is empty and + * xTicksToWait is 0. + * + * @param xJustPeek When set to true, the item received from the queue is not + * actually removed from the queue - meaning a subsequent call to + * xQueueReceive() will return the same item. When set to false, the item + * being received from the queue is also removed from the queue. + * + * @return pdTRUE if an item was successfully received from the queue, + * otherwise pdFALSE. + * + * Example usage: + 
+ struct AMessage
+ {
+	char ucMessageID;
+	char ucData[ 20 ];
+ } xMessage;
+
+ xQueueHandle xQueue;
+
+ // Task to create a queue and post a value.
+ void vATask( void *pvParameters )
+ {
+ struct AMessage *pxMessage;
+
+	// Create a queue capable of containing 10 pointers to AMessage structures.
+	// These should be passed by pointer as they contain a lot of data.
+	xQueue = xQueueCreate( 10, sizeof( struct AMessage * ) );
+	if( xQueue == 0 )
+	{
+		// Failed to create the queue.
+	}
+
+	// ...
+
+	// Send a pointer to a struct AMessage object.  Don't block if the
+	// queue is already full.
+	pxMessage = & xMessage;
+	xQueueSend( xQueue, ( void * ) &pxMessage, ( portTickType ) 0 );
+
+	// ... Rest of task code.
+ }
+
+ // Task to receive from the queue.
+ void vADifferentTask( void *pvParameters )
+ {
+ struct AMessage *pxRxedMessage;
+
+	if( xQueue != 0 )
+	{
+		// Receive a message on the created queue.  Block for 10 ticks if a
+		// message is not immediately available.
+		if( xQueueGenericReceive( xQueue, &( pxRxedMessage ), ( portTickType ) 10 ) )
+		{
+			// pcRxedMessage now points to the struct AMessage variable posted
+			// by vATask.
+		}
+	}
+
+	// ... Rest of task code.
+ }
+
+ * \defgroup xQueueReceive xQueueReceive + * \ingroup QueueManagement + */ +signed portBASE_TYPE xQueueGenericReceive( xQueueHandle xQueue, void * const pvBuffer, portTickType xTicksToWait, portBASE_TYPE xJustPeek ); + +/** + * queue. h + * 
unsigned portBASE_TYPE uxQueueMessagesWaiting( const xQueueHandle xQueue );
+ * + * Return the number of messages stored in a queue. + * + * @param xQueue A handle to the queue being queried. + * + * @return The number of messages available in the queue. + * + * \page uxQueueMessagesWaiting uxQueueMessagesWaiting + * \ingroup QueueManagement + */ +unsigned portBASE_TYPE uxQueueMessagesWaiting( const xQueueHandle xQueue ); + +/** + * queue. h + * 
void vQueueDelete( xQueueHandle xQueue );
+ * + * Delete a queue - freeing all the memory allocated for storing of items + * placed on the queue. + * + * @param xQueue A handle to the queue to be deleted. + * + * \page vQueueDelete vQueueDelete + * \ingroup QueueManagement + */ +void vQueueDelete( xQueueHandle pxQueue ); + +/** + * queue. h + * 
+ portBASE_TYPE xQueueSendToFrontFromISR(
+										 xQueueHandle pxQueue,
+										 const void *pvItemToQueue,
+										 portBASE_TYPE *pxHigherPriorityTaskWoken
+									  );
+
+ * + * This is a macro that calls xQueueGenericSendFromISR(). + * + * Post an item to the front of a queue. It is safe to use this macro from + * within an interrupt service routine. + * + * Items are queued by copy not reference so it is preferable to only + * queue small items, especially when called from an ISR. In most cases + * it would be preferable to store a pointer to the item being queued. + * + * @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 pxHigherPriorityTaskWoken xQueueSendToFrontFromISR() will set + * *pxHigherPriorityTaskWoken to pdTRUE if sending to the queue caused a task + * to unblock, and the unblocked task has a priority higher than the currently + * running task. If xQueueSendToFromFromISR() sets this value to pdTRUE then + * a context switch should be requested before the interrupt is exited. + * + * @return pdTRUE if the data was successfully sent to the queue, otherwise + * errQUEUE_FULL. + * + * Example usage for buffered IO (where the ISR can obtain more than one value + * per call): + 
+ void vBufferISR( void )
+ {
+ char cIn;
+ portBASE_TYPE xHigherPrioritTaskWoken;
+
+	// We have not woken a task at the start of the ISR.
+	xHigherPriorityTaskWoken = pdFALSE;
+
+	// Loop until the buffer is empty.
+	do
+	{
+		// Obtain a byte from the buffer.
+		cIn = portINPUT_BYTE( RX_REGISTER_ADDRESS );
+
+		// Post the byte.
+		xQueueSendToFrontFromISR( xRxQueue, &cIn, &xHigherPriorityTaskWoken );
+
+	} while( portINPUT_BYTE( BUFFER_COUNT ) );
+
+	// Now the buffer is empty we can switch context if necessary.
+	if( xHigherPriorityTaskWoken )
+	{
+		taskYIELD ();
+	}
+ }
+
+ * + * \defgroup xQueueSendFromISR xQueueSendFromISR + * \ingroup QueueManagement + */ +#define xQueueSendToFrontFromISR( pxQueue, pvItemToQueue, pxHigherPriorityTaskWoken ) xQueueGenericSendFromISR( ( pxQueue ), ( pvItemToQueue ), ( pxHigherPriorityTaskWoken ), queueSEND_TO_FRONT ) + + +/** + * queue. h + * 
+ portBASE_TYPE xQueueSendToBackFromISR(
+										 xQueueHandle pxQueue,
+										 const void *pvItemToQueue,
+										 portBASE_TYPE *pxHigherPriorityTaskWoken
+									  );
+
+ * + * This is a macro that calls xQueueGenericSendFromISR(). + * + * Post an item to the back of a queue. It is safe to use this macro from + * within an interrupt service routine. + * + * Items are queued by copy not reference so it is preferable to only + * queue small items, especially when called from an ISR. In most cases + * it would be preferable to store a pointer to the item being queued. + * + * @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 pxHigherPriorityTaskWoken xQueueSendToBackFromISR() will set + * *pxHigherPriorityTaskWoken to pdTRUE if sending to the queue caused a task + * to unblock, and the unblocked task has a priority higher than the currently + * running task. If xQueueSendToBackFromISR() sets this value to pdTRUE then + * a context switch should be requested before the interrupt is exited. + * + * @return pdTRUE if the data was successfully sent to the queue, otherwise + * errQUEUE_FULL. + * + * Example usage for buffered IO (where the ISR can obtain more than one value + * per call): + 
+ void vBufferISR( void )
+ {
+ char cIn;
+ portBASE_TYPE xHigherPriorityTaskWoken;
+
+	// We have not woken a task at the start of the ISR.
+	xHigherPriorityTaskWoken = pdFALSE;
+
+	// Loop until the buffer is empty.
+	do
+	{
+		// Obtain a byte from the buffer.
+		cIn = portINPUT_BYTE( RX_REGISTER_ADDRESS );
+
+		// Post the byte.
+		xQueueSendToBackFromISR( xRxQueue, &cIn, &xHigherPriorityTaskWoken );
+
+	} while( portINPUT_BYTE( BUFFER_COUNT ) );
+
+	// Now the buffer is empty we can switch context if necessary.
+	if( xHigherPriorityTaskWoken )
+	{
+		taskYIELD ();
+	}
+ }
+
+ * + * \defgroup xQueueSendFromISR xQueueSendFromISR + * \ingroup QueueManagement + */ +#define xQueueSendToBackFromISR( pxQueue, pvItemToQueue, pxHigherPriorityTaskWoken ) xQueueGenericSendFromISR( ( pxQueue ), ( pvItemToQueue ), ( pxHigherPriorityTaskWoken ), queueSEND_TO_BACK ) + +/** + * queue. h + * 
+ portBASE_TYPE xQueueSendFromISR(
+									 xQueueHandle pxQueue,
+									 const void *pvItemToQueue,
+									 portBASE_TYPE *pxHigherPriorityTaskWoken
+								);
+
+ * + * This is a macro that calls xQueueGenericSendFromISR(). It is included + * for backward compatibility with versions of FreeRTOS.org that did not + * include the xQueueSendToBackFromISR() and xQueueSendToFrontFromISR() + * macros. + * + * Post an item to the back of a queue. It is safe to use this function from + * within an interrupt service routine. + * + * Items are queued by copy not reference so it is preferable to only + * queue small items, especially when called from an ISR. In most cases + * it would be preferable to store a pointer to the item being queued. + * + * @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 pxHigherPriorityTaskWoken xQueueSendFromISR() will set + * *pxHigherPriorityTaskWoken to pdTRUE if sending to the queue caused a task + * to unblock, and the unblocked task has a priority higher than the currently + * running task. If xQueueSendFromISR() sets this value to pdTRUE then + * a context switch should be requested before the interrupt is exited. + * + * @return pdTRUE if the data was successfully sent to the queue, otherwise + * errQUEUE_FULL. + * + * Example usage for buffered IO (where the ISR can obtain more than one value + * per call): + 
+ void vBufferISR( void )
+ {
+ char cIn;
+ portBASE_TYPE xHigherPriorityTaskWoken;
+
+	// We have not woken a task at the start of the ISR.
+	xHigherPriorityTaskWoken = pdFALSE;
+
+	// Loop until the buffer is empty.
+	do
+	{
+		// Obtain a byte from the buffer.
+		cIn = portINPUT_BYTE( RX_REGISTER_ADDRESS );
+
+		// Post the byte.
+		xQueueSendFromISR( xRxQueue, &cIn, &xHigherPriorityTaskWoken );
+
+	} while( portINPUT_BYTE( BUFFER_COUNT ) );
+
+	// Now the buffer is empty we can switch context if necessary.
+	if( xHigherPriorityTaskWoken )
+	{
+		// Actual macro used here is port specific.
+		taskYIELD_FROM_ISR ();
+	}
+ }
+
+ * + * \defgroup xQueueSendFromISR xQueueSendFromISR + * \ingroup QueueManagement + */ +#define xQueueSendFromISR( pxQueue, pvItemToQueue, pxHigherPriorityTaskWoken ) xQueueGenericSendFromISR( ( pxQueue ), ( pvItemToQueue ), ( pxHigherPriorityTaskWoken ), queueSEND_TO_BACK ) + +/** + * queue. h + * 
+ portBASE_TYPE xQueueGenericSendFromISR(
+										   xQueueHandle	pxQueue,
+										   const	void	*pvItemToQueue,
+										   portBASE_TYPE	*pxHigherPriorityTaskWoken,
+										   portBASE_TYPE	xCopyPosition
+									   );
+
+ * + * It is preferred that the macros xQueueSendFromISR(), + * xQueueSendToFrontFromISR() and xQueueSendToBackFromISR() be used in place + * of calling this function directly. + * + * Post an item on a queue. It is safe to use this function from within an + * interrupt service routine. + * + * Items are queued by copy not reference so it is preferable to only + * queue small items, especially when called from an ISR. In most cases + * it would be preferable to store a pointer to the item being queued. + * + * @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 pxHigherPriorityTaskWoken xQueueGenericSendFromISR() will set + * *pxHigherPriorityTaskWoken to pdTRUE if sending to the queue caused a task + * to unblock, and the unblocked task has a priority higher than the currently + * running task. If xQueueGenericSendFromISR() sets this value to pdTRUE then + * a context switch should be requested before the interrupt is exited. + * + * @param xCopyPosition Can take the value queueSEND_TO_BACK to place the + * item at the back of the queue, or queueSEND_TO_FRONT to place the item + * at the front of the queue (for high priority messages). + * + * @return pdTRUE if the data was successfully sent to the queue, otherwise + * errQUEUE_FULL. + * + * Example usage for buffered IO (where the ISR can obtain more than one value + * per call): + 
+ void vBufferISR( void )
+ {
+ char cIn;
+ portBASE_TYPE xHigherPriorityTaskWokenByPost;
+
+	// We have not woken a task at the start of the ISR.
+	xHigherPriorityTaskWokenByPost = pdFALSE;
+
+	// Loop until the buffer is empty.
+	do
+	{
+		// Obtain a byte from the buffer.
+		cIn = portINPUT_BYTE( RX_REGISTER_ADDRESS );
+
+		// Post each byte.
+		xQueueGenericSendFromISR( xRxQueue, &cIn, &xHigherPriorityTaskWokenByPost, queueSEND_TO_BACK );
+
+	} while( portINPUT_BYTE( BUFFER_COUNT ) );
+
+	// Now the buffer is empty we can switch context if necessary.  Note that the
+	// name of the yield function required is port specific.
+	if( xHigherPriorityTaskWokenByPost )
+	{
+		taskYIELD_YIELD_FROM_ISR();
+	}
+ }
+
+ * + * \defgroup xQueueSendFromISR xQueueSendFromISR + * \ingroup QueueManagement + */ +signed portBASE_TYPE xQueueGenericSendFromISR( xQueueHandle pxQueue, const void * const pvItemToQueue, signed portBASE_TYPE *pxHigherPriorityTaskWoken, portBASE_TYPE xCopyPosition ); + +/** + * queue. h + * 
+ portBASE_TYPE xQueueReceiveFromISR(
+									   xQueueHandle	pxQueue,
+									   void	*pvBuffer,
+									   portBASE_TYPE	*pxTaskWoken
+								   );
+ *
+ * + * Receive an item from a queue. It is safe to use this function from within an + * interrupt service routine. + * + * @param pxQueue The handle to the queue from which the item is to be + * received. + * + * @param pvBuffer Pointer to the buffer into which the received item will + * be copied. + * + * @param pxTaskWoken A task may be blocked waiting for space to become + * available on the queue. If xQueueReceiveFromISR causes such a task to + * unblock *pxTaskWoken will get set to pdTRUE, otherwise *pxTaskWoken will + * remain unchanged. + * + * @return pdTRUE if an item was successfully received from the queue, + * otherwise pdFALSE. + * + * Example usage: + 
+
+ xQueueHandle xQueue;
+
+ // Function to create a queue and post some values.
+ void vAFunction( void *pvParameters )
+ {
+ char cValueToPost;
+ const portTickType xBlockTime = ( portTickType )0xff;
+
+	// Create a queue capable of containing 10 characters.
+	xQueue = xQueueCreate( 10, sizeof( char ) );
+	if( xQueue == 0 )
+	{
+		// Failed to create the queue.
+	}
+
+	// ...
+
+	// Post some characters that will be used within an ISR.  If the queue
+	// is full then this task will block for xBlockTime ticks.
+	cValueToPost = 'a';
+	xQueueSend( xQueue, ( void * ) &cValueToPost, xBlockTime );
+	cValueToPost = 'b';
+	xQueueSend( xQueue, ( void * ) &cValueToPost, xBlockTime );
+
+	// ... keep posting characters ... this task may block when the queue
+	// becomes full.
+
+	cValueToPost = 'c';
+	xQueueSend( xQueue, ( void * ) &cValueToPost, xBlockTime );
+ }
+
+ // ISR that outputs all the characters received on the queue.
+ void vISR_Routine( void )
+ {
+ portBASE_TYPE xTaskWokenByReceive = pdFALSE;
+ char cRxedChar;
+
+	while( xQueueReceiveFromISR( xQueue, ( void * ) &cRxedChar, &xTaskWokenByReceive) )
+	{
+		// A character was received.  Output the character now.
+		vOutputCharacter( cRxedChar );
+
+		// If removing the character from the queue woke the task that was
+		// posting onto the queue cTaskWokenByReceive will have been set to
+		// pdTRUE.  No matter how many times this loop iterates only one
+		// task will be woken.
+	}
+
+	if( cTaskWokenByPost != ( char ) pdFALSE;
+	{
+		taskYIELD ();
+	}
+ }
+
+ * \defgroup xQueueReceiveFromISR xQueueReceiveFromISR + * \ingroup QueueManagement + */ +signed portBASE_TYPE xQueueReceiveFromISR( xQueueHandle pxQueue, void * const pvBuffer, signed portBASE_TYPE *pxHigherPriorityTaskWoken ); + +/* + * Utilities to query queues that are safe to use from an ISR. These utilities + * should be used only from witin an ISR, or within a critical section. + */ +signed portBASE_TYPE xQueueIsQueueEmptyFromISR( const xQueueHandle pxQueue ); +signed portBASE_TYPE xQueueIsQueueFullFromISR( const xQueueHandle pxQueue ); +unsigned portBASE_TYPE uxQueueMessagesWaitingFromISR( const xQueueHandle pxQueue ); + + +/* + * xQueueAltGenericSend() is an alternative version of xQueueGenericSend(). + * Likewise xQueueAltGenericReceive() is an alternative version of + * xQueueGenericReceive(). + * + * The source code that implements the alternative (Alt) API is much + * simpler because it executes everything from within a critical section. + * This is the approach taken by many other RTOSes, but FreeRTOS.org has the + * preferred fully featured API too. The fully featured API has more + * complex code that takes longer to execute, but makes much less use of + * critical sections. Therefore the alternative API sacrifices interrupt + * responsiveness to gain execution speed, whereas the fully featured API + * sacrifices execution speed to ensure better interrupt responsiveness. + */ +signed portBASE_TYPE xQueueAltGenericSend( xQueueHandle pxQueue, const void * const pvItemToQueue, portTickType xTicksToWait, portBASE_TYPE xCopyPosition ); +signed portBASE_TYPE xQueueAltGenericReceive( xQueueHandle pxQueue, void * const pvBuffer, portTickType xTicksToWait, portBASE_TYPE xJustPeeking ); +#define xQueueAltSendToFront( xQueue, pvItemToQueue, xTicksToWait ) xQueueAltGenericSend( ( xQueue ), ( pvItemToQueue ), ( xTicksToWait ), queueSEND_TO_FRONT ) +#define xQueueAltSendToBack( xQueue, pvItemToQueue, xTicksToWait ) xQueueAltGenericSend( ( xQueue ), ( pvItemToQueue ), ( xTicksToWait ), queueSEND_TO_BACK ) +#define xQueueAltReceive( xQueue, pvBuffer, xTicksToWait ) xQueueAltGenericReceive( ( xQueue ), ( pvBuffer ), ( xTicksToWait ), pdFALSE ) +#define xQueueAltPeek( xQueue, pvBuffer, xTicksToWait ) xQueueAltGenericReceive( ( xQueue ), ( pvBuffer ), ( xTicksToWait ), pdTRUE ) + +/* + * The functions defined above are for passing data to and from tasks. The + * functions below are the equivalents for passing data to and from + * co-routines. + * + * These functions are called from the co-routine macro implementation and + * should not be called directly from application code. Instead use the macro + * wrappers defined within croutine.h. + */ +signed portBASE_TYPE xQueueCRSendFromISR( xQueueHandle pxQueue, const void *pvItemToQueue, signed portBASE_TYPE xCoRoutinePreviouslyWoken ); +signed portBASE_TYPE xQueueCRReceiveFromISR( xQueueHandle pxQueue, void *pvBuffer, signed portBASE_TYPE *pxTaskWoken ); +signed portBASE_TYPE xQueueCRSend( xQueueHandle pxQueue, const void *pvItemToQueue, portTickType xTicksToWait ); +signed portBASE_TYPE xQueueCRReceive( xQueueHandle pxQueue, void *pvBuffer, portTickType xTicksToWait ); + +/* + * For internal use only. Use xSemaphoreCreateMutex(), + * xSemaphoreCreateCounting() or xSemaphoreGetMutexHolder() instead of calling + * these functions directly. + */ +xQueueHandle xQueueCreateMutex( unsigned char ucQueueType ); +xQueueHandle xQueueCreateCountingSemaphore( unsigned portBASE_TYPE uxCountValue, unsigned portBASE_TYPE uxInitialCount ); +void* xQueueGetMutexHolder( xQueueHandle xSemaphore ); + +/* + * For internal use only. Use xSemaphoreTakeMutexRecursive() or + * xSemaphoreGiveMutexRecursive() instead of calling these functions directly. + */ +portBASE_TYPE xQueueTakeMutexRecursive( xQueueHandle pxMutex, portTickType xBlockTime ); +portBASE_TYPE xQueueGiveMutexRecursive( xQueueHandle pxMutex ); + +/* + * Reset a queue back to its original empty state. pdPASS is returned if the + * queue is successfully reset. pdFAIL is returned if the queue could not be + * reset because there are tasks blocked on the queue waiting to either + * receive from the queue or send to the queue. + */ +#define xQueueReset( pxQueue ) xQueueGenericReset( pxQueue, pdFALSE ) + +/* + * The registry is provided as a means for kernel aware debuggers to + * locate queues, semaphores and mutexes. Call vQueueAddToRegistry() add + * a queue, semaphore or mutex handle to the registry if you want the handle + * to be available to a kernel aware debugger. If you are not using a kernel + * aware debugger then this function can be ignored. + * + * configQUEUE_REGISTRY_SIZE defines the maximum number of handles the + * registry can hold. configQUEUE_REGISTRY_SIZE must be greater than 0 + * within FreeRTOSConfig.h for the registry to be available. Its value + * does not effect the number of queues, semaphores and mutexes that can be + * created - just the number that the registry can hold. + * + * @param xQueue The handle of the queue being added to the registry. This + * is the handle returned by a call to xQueueCreate(). Semaphore and mutex + * handles can also be passed in here. + * + * @param pcName The name to be associated with the handle. This is the + * name that the kernel aware debugger will display. + */ +#if configQUEUE_REGISTRY_SIZE > 0U + void vQueueAddToRegistry( xQueueHandle xQueue, signed char *pcName ); +#endif + +/* + * Generic version of the queue creation function, which is in turn called by + * any queue, semaphore or mutex creation function or macro. + */ +xQueueHandle xQueueGenericCreate( unsigned portBASE_TYPE uxQueueLength, unsigned portBASE_TYPE uxItemSize, unsigned char ucQueueType ); + +/* Not public API functions. */ +void vQueueWaitForMessageRestricted( xQueueHandle pxQueue, portTickType xTicksToWait ); +portBASE_TYPE xQueueGenericReset( xQueueHandle pxQueue, portBASE_TYPE xNewQueue ); + + +#ifdef __cplusplus +} +#endif + +#endif /* QUEUE_H */ + -- cgit v1.3.1