/*\r
- FreeRTOS V8.1.1 - Copyright (C) 2014 Real Time Engineers Ltd. \r
+ FreeRTOS V9.0.0rc2 - Copyright (C) 2016 Real Time Engineers Ltd.\r
All rights reserved\r
\r
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
\r
- ***************************************************************************\r
- * *\r
- * FreeRTOS provides completely free yet professionally developed, *\r
- * robust, strictly quality controlled, supported, and cross *\r
- * platform software that has become a de facto standard. *\r
- * *\r
- * Help yourself get started quickly and support the FreeRTOS *\r
- * project by purchasing a FreeRTOS tutorial book, reference *\r
- * manual, or both from: http://www.FreeRTOS.org/Documentation *\r
- * *\r
- * Thank you! *\r
- * *\r
- ***************************************************************************\r
-\r
This file is part of the FreeRTOS distribution.\r
\r
FreeRTOS is free software; you can redistribute it and/or modify it under\r
the terms of the GNU General Public License (version 2) as published by the\r
- Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
+ Free Software Foundation >>>> AND MODIFIED BY <<<< the FreeRTOS exception.\r
\r
+ ***************************************************************************\r
>>! NOTE: The modification to the GPL is included to allow you to !<<\r
>>! distribute a combined work that includes FreeRTOS without being !<<\r
>>! obliged to provide the source code for proprietary components !<<\r
>>! outside of the FreeRTOS kernel. !<<\r
+ ***************************************************************************\r
\r
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
- FOR A PARTICULAR PURPOSE. Full license text is available from the following\r
+ FOR A PARTICULAR PURPOSE. Full license text is available on the following\r
link: http://www.freertos.org/a00114.html\r
\r
- 1 tab == 4 spaces!\r
-\r
***************************************************************************\r
* *\r
- * Having a problem? Start by reading the FAQ "My application does *\r
- * not run, what could be wrong?" *\r
+ * FreeRTOS provides completely free yet professionally developed, *\r
+ * robust, strictly quality controlled, supported, and cross *\r
+ * platform software that is more than just the market leader, it *\r
+ * is the industry's de facto standard. *\r
* *\r
- * http://www.FreeRTOS.org/FAQHelp.html *\r
+ * Help yourself get started quickly while simultaneously helping *\r
+ * to support the FreeRTOS project by purchasing a FreeRTOS *\r
+ * tutorial book, reference manual, or both: *\r
+ * http://www.FreeRTOS.org/Documentation *\r
* *\r
***************************************************************************\r
\r
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
- license and Real Time Engineers Ltd. contact details.\r
+ http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading\r
+ the FAQ page "My application does not run, what could be wrong?". Have you\r
+ defined configASSERT()?\r
+\r
+ http://www.FreeRTOS.org/support - In return for receiving this top quality\r
+ embedded software for free we request you assist our global community by\r
+ participating in the support forum.\r
+\r
+ http://www.FreeRTOS.org/training - Investing in training allows your team to\r
+ be as productive as possible as early as possible. Now you can receive\r
+ FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers\r
+ Ltd, and the world's leading authority on the world's leading RTOS.\r
\r
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
\r
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
- Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS\r
- licenses offer ticketed support, indemnification and middleware.\r
+ http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.\r
+ Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.\r
+\r
+ http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High\r
+ Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS\r
+ licenses offer ticketed support, indemnification and commercial middleware.\r
\r
http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
engineered and independently SIL3 certified version for use in safety and\r
*/\r
\r
/*\r
- * Creates two sets of two tasks. The tasks within a set share a variable, access \r
+ * Creates two sets of two tasks. The tasks within a set share a variable, access\r
* to which is guarded by a semaphore.\r
- * \r
- * Each task starts by attempting to obtain the semaphore. On obtaining a \r
- * semaphore a task checks to ensure that the guarded variable has an expected \r
- * value. It then clears the variable to zero before counting it back up to the \r
- * expected value in increments of 1. After each increment the variable is checked \r
- * to ensure it contains the value to which it was just set. When the starting \r
- * value is again reached the task releases the semaphore giving the other task in \r
- * the set a chance to do exactly the same thing. The starting value is high \r
+ *\r
+ * Each task starts by attempting to obtain the semaphore. On obtaining a\r
+ * semaphore a task checks to ensure that the guarded variable has an expected\r
+ * value. It then clears the variable to zero before counting it back up to the\r
+ * expected value in increments of 1. After each increment the variable is checked\r
+ * to ensure it contains the value to which it was just set. When the starting\r
+ * value is again reached the task releases the semaphore giving the other task in\r
+ * the set a chance to do exactly the same thing. The starting value is high\r
* enough to ensure that a tick is likely to occur during the incrementing loop.\r
*\r
- * An error is flagged if at any time during the process a shared variable is \r
- * found to have a value other than that expected. Such an occurrence would \r
- * suggest an error in the mutual exclusion mechanism by which access to the \r
+ * An error is flagged if at any time during the process a shared variable is\r
+ * found to have a value other than that expected. Such an occurrence would\r
+ * suggest an error in the mutual exclusion mechanism by which access to the\r
* variable is restricted.\r
*\r
- * The first set of two tasks poll their semaphore. The second set use blocking \r
+ * The first set of two tasks poll their semaphore. The second set use blocking\r
* calls.\r
*\r
*/\r
if( pxFirstSemaphoreParameters != NULL )\r
{\r
/* Create the semaphore used by the first two tasks. */\r
- pxFirstSemaphoreParameters->xSemaphore = xSemaphoreCreateBinary();\r
- xSemaphoreGive( pxFirstSemaphoreParameters->xSemaphore );\r
+ pxFirstSemaphoreParameters->xSemaphore = xSemaphoreCreateBinary(); \r
\r
if( pxFirstSemaphoreParameters->xSemaphore != NULL )\r
{\r
+ xSemaphoreGive( pxFirstSemaphoreParameters->xSemaphore );\r
+ \r
/* Create the variable which is to be shared by the first two tasks. */\r
pxFirstSemaphoreParameters->pulSharedVariable = ( uint32_t * ) pvPortMalloc( sizeof( uint32_t ) );\r
\r
/* Spawn the first two tasks. As they poll they operate at the idle priority. */\r
xTaskCreate( prvSemaphoreTest, "PolSEM1", semtstSTACK_SIZE, ( void * ) pxFirstSemaphoreParameters, tskIDLE_PRIORITY, ( TaskHandle_t * ) NULL );\r
xTaskCreate( prvSemaphoreTest, "PolSEM2", semtstSTACK_SIZE, ( void * ) pxFirstSemaphoreParameters, tskIDLE_PRIORITY, ( TaskHandle_t * ) NULL );\r
+\r
+ /* vQueueAddToRegistry() adds the semaphore to the registry, if one\r
+ is in use. The registry is provided as a means for kernel aware\r
+ debuggers to locate semaphores and has no purpose if a kernel aware\r
+ debugger is not being used. The call to vQueueAddToRegistry() will\r
+ be removed by the pre-processor if configQUEUE_REGISTRY_SIZE is not\r
+ defined or is defined to be less than 1. */\r
+ vQueueAddToRegistry( ( QueueHandle_t ) pxFirstSemaphoreParameters->xSemaphore, "Counting_Sem_1" );\r
}\r
}\r
\r
- /* Do exactly the same to create the second set of tasks, only this time \r
+ /* Do exactly the same to create the second set of tasks, only this time\r
provide a block time for the semaphore calls. */\r
pxSecondSemaphoreParameters = ( xSemaphoreParameters * ) pvPortMalloc( sizeof( xSemaphoreParameters ) );\r
if( pxSecondSemaphoreParameters != NULL )\r
{\r
- pxSecondSemaphoreParameters->xSemaphore = xSemaphoreCreateBinary();\r
- xSemaphoreGive( pxSecondSemaphoreParameters->xSemaphore );\r
+ pxSecondSemaphoreParameters->xSemaphore = xSemaphoreCreateBinary(); \r
\r
if( pxSecondSemaphoreParameters->xSemaphore != NULL )\r
{\r
+ xSemaphoreGive( pxSecondSemaphoreParameters->xSemaphore );\r
+ \r
pxSecondSemaphoreParameters->pulSharedVariable = ( uint32_t * ) pvPortMalloc( sizeof( uint32_t ) );\r
*( pxSecondSemaphoreParameters->pulSharedVariable ) = semtstBLOCKING_EXPECTED_VALUE;\r
pxSecondSemaphoreParameters->xBlockTime = xBlockTime / portTICK_PERIOD_MS;\r
\r
xTaskCreate( prvSemaphoreTest, "BlkSEM1", semtstSTACK_SIZE, ( void * ) pxSecondSemaphoreParameters, uxPriority, ( TaskHandle_t * ) NULL );\r
xTaskCreate( prvSemaphoreTest, "BlkSEM2", semtstSTACK_SIZE, ( void * ) pxSecondSemaphoreParameters, uxPriority, ( TaskHandle_t * ) NULL );\r
+\r
+ /* vQueueAddToRegistry() adds the semaphore to the registry, if one\r
+ is in use. The registry is provided as a means for kernel aware\r
+ debuggers to locate semaphores and has no purpose if a kernel aware\r
+ debugger is not being used. The call to vQueueAddToRegistry() will\r
+ be removed by the pre-processor if configQUEUE_REGISTRY_SIZE is not\r
+ defined or is defined to be less than 1. */\r
+ vQueueAddToRegistry( ( QueueHandle_t ) pxSecondSemaphoreParameters->xSemaphore, "Counting_Sem_2" );\r
}\r
}\r
-\r
- /* vQueueAddToRegistry() adds the semaphore to the registry, if one is\r
- in use. The registry is provided as a means for kernel aware \r
- debuggers to locate semaphores and has no purpose if a kernel aware debugger\r
- is not being used. The call to vQueueAddToRegistry() will be removed\r
- by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is \r
- defined to be less than 1. */\r
- vQueueAddToRegistry( ( QueueHandle_t ) pxFirstSemaphoreParameters->xSemaphore, "Counting_Sem_1" );\r
- vQueueAddToRegistry( ( QueueHandle_t ) pxSecondSemaphoreParameters->xSemaphore, "Counting_Sem_2" );\r
}\r
/*-----------------------------------------------------------*/\r
\r
uint32_t ulCounter;\r
short sError = pdFALSE, sCheckVariableToUse;\r
\r
- /* See which check variable to use. sNextCheckVariable is not semaphore \r
+ /* See which check variable to use. sNextCheckVariable is not semaphore\r
protected! */\r
portENTER_CRITICAL();\r
sCheckVariableToUse = sNextCheckVariable;\r
sNextCheckVariable++;\r
portEXIT_CRITICAL();\r
\r
- /* A structure is passed in as the parameter. This contains the shared \r
+ /* A structure is passed in as the parameter. This contains the shared\r
variable being guarded. */\r
pxParameters = ( xSemaphoreParameters * ) pvParameters;\r
pulSharedVariable = pxParameters->pulSharedVariable;\r
{\r
sError = pdTRUE;\r
}\r
- \r
+\r
/* Clear the variable, then count it back up to the expected value\r
before releasing the semaphore. Would expect a context switch or\r
two during this time. */\r
projects / freertos / blobdiff