FreeRTOS/Demo/CORTEX_M0_Infineon_XMC1000_IAR_Keil_GCC/main.c - nest-detect/1.0.2/freertos - Git at Google

 /*
     FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd.
     All rights reserved

     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

     ***************************************************************************
      *                                                                       *
      *    FreeRTOS provides completely free yet professionally developed,    *
      *    robust, strictly quality controlled, supported, and cross          *
      *    platform software that has become a de facto standard.             *
      *                                                                       *
      *    Help yourself get started quickly and support the FreeRTOS         *
      *    project by purchasing a FreeRTOS tutorial book, reference          *
      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *
      *                                                                       *
      *    Thank you!                                                         *
      *                                                                       *
     ***************************************************************************

     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.  Full license text is available from the following
     link: http://www.freertos.org/a00114.html

     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, books, training, latest versions,
     license and Real Time Engineers Ltd. contact details.

     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
     including FreeRTOS+Trace - an indispensable productivity tool, a DOS
     compatible FAT file system, and our tiny thread aware UDP/IP stack.

     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS
     licenses offer ticketed support, indemnification and middleware.

     http://www.SafeRTOS.com - High Integrity Systems also provide a safety
     engineered and independently SIL3 certified version for use in safety and
     mission critical applications that require provable dependability.

     1 tab == 4 spaces!
 */

 /******************************************************************************
  * This project provides two demo applications.  A simple blinky style project,
  * and a more comprehensive test and demo application.  The
  * mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
  * select between the two.  The simply blinky demo is implemented and described
  * in main_blinky.c.  The more comprehensive test and demo application is
  * implemented and described in main_full.c.
  *
  * This file implements the code that is not demo specific, including the
  * hardware setup and FreeRTOS hook functions.  It also contains a dummy
  * interrupt service routine called Dummy_IRQHandler() that is provided as an
  * example of how to use interrupt safe FreeRTOS API functions (those that end
  * in "FromISR").
  *
  *****************************************************************************/


 /* Standard includes. */
 #include "string.h"

 /* FreeRTOS includes. */
 #include "FreeRTOS.h"
 #include "task.h"
 #include "semphr.h"

 /* Demo application include. */
 #include "ParTest.h"
 #include "QueueSet.h"

 /* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
 or 0 to run the more comprehensive test and demo application. */
 #define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY	1


 /*-----------------------------------------------------------*/

 /*
  * Perform any application specific hardware configuration.  The clocks,
  * memory, etc. are configured before main() is called.
  */
 static void prvSetupHardware( void );

 /*
  * main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
  * main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
  */
 extern void main_blinky( void );
 extern void main_full( void );

 /*
  * CMSIS clock configuration function.
  */
 extern void SystemCoreClockUpdate( void );

 /*-----------------------------------------------------------*/

 int main( void )
 {
 	/* Prepare the hardware to run this demo. */
 	prvSetupHardware();

 	/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
 	of this file. */
 	#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
 	{
 		main_blinky();
 	}
 	#else
 	{
 		main_full();
 	}
 	#endif

 	return 0;
 }
 /*-----------------------------------------------------------*/

 static void prvSetupHardware( void )
 {
 	SystemCoreClockUpdate();
 	vParTestInitialise();
 }
 /*-----------------------------------------------------------*/

 void vApplicationMallocFailedHook( void )
 {
 	/* vApplicationMallocFailedHook() will only be called if
 	configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h.  It is a hook
 	function that will get called if a call to pvPortMalloc() fails.
 	pvPortMalloc() is called internally by the kernel whenever a task, queue,
 	timer or semaphore is created.  It is also called by various parts of the
 	demo application.  If heap_1.c or heap_2.c are used, then the size of the
 	heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
 	FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
 	to query the size of free heap space that remains (although it does not
 	provide information on how the remaining heap might be fragmented). */
 	taskDISABLE_INTERRUPTS();
 	for( ;; );
 }
 /*-----------------------------------------------------------*/

 void vApplicationIdleHook( void )
 {
 	/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
 	to 1 in FreeRTOSConfig.h.  It will be called on each iteration of the idle
 	task.  It is essential that code added to this hook function never attempts
 	to block in any way (for example, call xQueueReceive() with a block time
 	specified, or call vTaskDelay()).  If the application makes use of the
 	vTaskDelete() API function (as this demo application does) then it is also
 	important that vApplicationIdleHook() is permitted to return to its calling
 	function, because it is the responsibility of the idle task to clean up
 	memory allocated by the kernel to any task that has since been deleted. */
 }
 /*-----------------------------------------------------------*/

 void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
 {
 	( void ) pcTaskName;
 	( void ) pxTask;

 	/* Run time stack overflow checking is performed if
 	configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2.  This hook
 	function is called if a stack overflow is detected. */
 	taskDISABLE_INTERRUPTS();
 	for( ;; );
 }
 /*-----------------------------------------------------------*/

 void vApplicationTickHook( void )
 {
 	/* This function will be called by each tick interrupt if
 	configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h.  User code can be
 	added here, but the tick hook is called from an interrupt context, so
 	code must not attempt to block, and only the interrupt safe FreeRTOS API
 	functions can be used (those that end in FromISR()).  The code in this
 	tick hook implementation is for demonstration only - it has no real
 	purpose.  It just gives a semaphore every 50ms.  The semaphore unblocks a
 	task that then toggles an LED.  Additionally, the call to
 	vQueueSetAccessQueueSetFromISR() is part of the "standard demo tasks"
 	functionality. */

 	/* The semaphore and associated task are not created when the simple blinky
 	demo is used. */
 	#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 0
 	{
 	static unsigned long ulLastGiveTime = 0UL;
 	const unsigned long ulRate = 50UL / portTICK_PERIOD_MS;
 	extern SemaphoreHandle_t xLEDSemaphore;

 		configASSERT( xLEDSemaphore );

 		if( ( xTaskGetTickCountFromISR() - ulLastGiveTime ) > ulRate )
 		{
 			/* The second parameter is normally used to determine if a context
 			switch should be performed or not.  In this case the function is
 			being performed from the tick hook, so the scheduler will make that
 			assessment before returning to a task anyway - so the parameter is
 			not needed and is just set to NULL. */
 			xSemaphoreGiveFromISR( xLEDSemaphore, NULL );
 			ulLastGiveTime += ulRate;
 		}

 		/* Write to a queue that is in use as part of the queue set demo to
 		demonstrate using queue sets from an ISR. */
 		vQueueSetAccessQueueSetFromISR();
 	}
 	#endif /* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY */
 }
 /*-----------------------------------------------------------*/

 #ifdef JUST_AN_EXAMPLE_ISR

 void Dummy_IRQHandler(void)
 {
 long lHigherPriorityTaskWoken = pdFALSE;

 	/* Clear the interrupt if necessary. */
 	Dummy_ClearITPendingBit();

 	/* This interrupt does nothing more than demonstrate how to synchronise a
 	task with an interrupt.  A semaphore is used for this purpose.  Note
 	lHigherPriorityTaskWoken is initialised to zero. Only FreeRTOS API functions
 	that end in "FromISR" can be called from an ISR. */
 	xSemaphoreGiveFromISR( xTestSemaphore, &lHigherPriorityTaskWoken );

 	/* If there was a task that was blocked on the semaphore, and giving the
 	semaphore caused the task to unblock, and the unblocked task has a priority
 	higher than the current Running state task (the task that this interrupt
 	interrupted), then lHigherPriorityTaskWoken will have been set to pdTRUE
 	internally within xSemaphoreGiveFromISR().  Passing pdTRUE into the
 	portEND_SWITCHING_ISR() macro will result in a context switch being pended to
 	ensure this interrupt returns directly to the unblocked, higher priority,
 	task.  Passing pdFALSE into portEND_SWITCHING_ISR() has no effect. */
 	portEND_SWITCHING_ISR( lHigherPriorityTaskWoken );
 }

 #endif /* JUST_AN_EXAMPLE_ISR */
	/*
	FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd.
	All rights reserved

	VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

	***************************************************************************
	* *
	* FreeRTOS provides completely free yet professionally developed, *
	* robust, strictly quality controlled, supported, and cross *
	* platform software that has become a de facto standard. *
	* *
	* Help yourself get started quickly and support the FreeRTOS *
	* project by purchasing a FreeRTOS tutorial book, reference *
	* manual, or both from: http://www.FreeRTOS.org/Documentation *
	* *
	* Thank you! *
	* *
	***************************************************************************

	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. Full license text is available from the following
	link: http://www.freertos.org/a00114.html

	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, books, training, latest versions,
	license and Real Time Engineers Ltd. contact details.

	http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
	including FreeRTOS+Trace - an indispensable productivity tool, a DOS
	compatible FAT file system, and our tiny thread aware UDP/IP stack.

	http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
	Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
	licenses offer ticketed support, indemnification and middleware.

	http://www.SafeRTOS.com - High Integrity Systems also provide a safety
	engineered and independently SIL3 certified version for use in safety and
	mission critical applications that require provable dependability.

	1 tab == 4 spaces!
	*/

	/******************************************************************************
	* This project provides two demo applications. A simple blinky style project,
	* and a more comprehensive test and demo application. The
	* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
	* select between the two. The simply blinky demo is implemented and described
	* in main_blinky.c. The more comprehensive test and demo application is
	* implemented and described in main_full.c.
	*
	* This file implements the code that is not demo specific, including the
	* hardware setup and FreeRTOS hook functions. It also contains a dummy
	* interrupt service routine called Dummy_IRQHandler() that is provided as an
	* example of how to use interrupt safe FreeRTOS API functions (those that end
	* in "FromISR").
	*
	*****************************************************************************/


	/* Standard includes. */
	#include "string.h"

	/* FreeRTOS includes. */
	#include "FreeRTOS.h"
	#include "task.h"
	#include "semphr.h"

	/* Demo application include. */
	#include "ParTest.h"
	#include "QueueSet.h"

	/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
	or 0 to run the more comprehensive test and demo application. */
	#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 1


	/-----------------------------------------------------------/

	/*
	* Perform any application specific hardware configuration. The clocks,
	* memory, etc. are configured before main() is called.
	*/
	static void prvSetupHardware( void );

	/*
	* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
	* main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
	*/
	extern void main_blinky( void );
	extern void main_full( void );

	/*
	* CMSIS clock configuration function.
	*/
	extern void SystemCoreClockUpdate( void );

	/-----------------------------------------------------------/

	int main( void )
	{
	/* Prepare the hardware to run this demo. */
	prvSetupHardware();

	/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
	of this file. */
	#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
	{
	main_blinky();
	}
	#else
	{
	main_full();
	}
	#endif

	return 0;
	}
	/-----------------------------------------------------------/

	static void prvSetupHardware( void )
	{
	SystemCoreClockUpdate();
	vParTestInitialise();
	}
	/-----------------------------------------------------------/

	void vApplicationMallocFailedHook( void )
	{
	/* vApplicationMallocFailedHook() will only be called if
	configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
	function that will get called if a call to pvPortMalloc() fails.
	pvPortMalloc() is called internally by the kernel whenever a task, queue,
	timer or semaphore is created. It is also called by various parts of the
	demo application. If heap_1.c or heap_2.c are used, then the size of the
	heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
	FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
	to query the size of free heap space that remains (although it does not
	provide information on how the remaining heap might be fragmented). */
	taskDISABLE_INTERRUPTS();
	for( ;; );
	}
	/-----------------------------------------------------------/

	void vApplicationIdleHook( void )
	{
	/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
	to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
	task. It is essential that code added to this hook function never attempts
	to block in any way (for example, call xQueueReceive() with a block time
	specified, or call vTaskDelay()). If the application makes use of the
	vTaskDelete() API function (as this demo application does) then it is also
	important that vApplicationIdleHook() is permitted to return to its calling
	function, because it is the responsibility of the idle task to clean up
	memory allocated by the kernel to any task that has since been deleted. */
	}
	/-----------------------------------------------------------/

	void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
	{
	( void ) pcTaskName;
	( void ) pxTask;

	/* Run time stack overflow checking is performed if
	configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
	function is called if a stack overflow is detected. */
	taskDISABLE_INTERRUPTS();
	for( ;; );
	}
	/-----------------------------------------------------------/

	void vApplicationTickHook( void )
	{
	/* This function will be called by each tick interrupt if
	configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
	added here, but the tick hook is called from an interrupt context, so
	code must not attempt to block, and only the interrupt safe FreeRTOS API
	functions can be used (those that end in FromISR()). The code in this
	tick hook implementation is for demonstration only - it has no real
	purpose. It just gives a semaphore every 50ms. The semaphore unblocks a
	task that then toggles an LED. Additionally, the call to
	vQueueSetAccessQueueSetFromISR() is part of the "standard demo tasks"
	functionality. */

	/* The semaphore and associated task are not created when the simple blinky
	demo is used. */
	#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 0
	{
	static unsigned long ulLastGiveTime = 0UL;
	const unsigned long ulRate = 50UL / portTICK_PERIOD_MS;
	extern SemaphoreHandle_t xLEDSemaphore;

	configASSERT( xLEDSemaphore );

	if( ( xTaskGetTickCountFromISR() - ulLastGiveTime ) > ulRate )
	{
	/* The second parameter is normally used to determine if a context
	switch should be performed or not. In this case the function is
	being performed from the tick hook, so the scheduler will make that
	assessment before returning to a task anyway - so the parameter is
	not needed and is just set to NULL. */
	xSemaphoreGiveFromISR( xLEDSemaphore, NULL );
	ulLastGiveTime += ulRate;
	}

	/* Write to a queue that is in use as part of the queue set demo to
	demonstrate using queue sets from an ISR. */
	vQueueSetAccessQueueSetFromISR();
	}
	#endif /* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY */
	}
	/-----------------------------------------------------------/

	#ifdef JUST_AN_EXAMPLE_ISR

	void Dummy_IRQHandler(void)
	{
	long lHigherPriorityTaskWoken = pdFALSE;

	/* Clear the interrupt if necessary. */
	Dummy_ClearITPendingBit();

	/* This interrupt does nothing more than demonstrate how to synchronise a
	task with an interrupt. A semaphore is used for this purpose. Note
	lHigherPriorityTaskWoken is initialised to zero. Only FreeRTOS API functions
	that end in "FromISR" can be called from an ISR. */
	xSemaphoreGiveFromISR( xTestSemaphore, &lHigherPriorityTaskWoken );

	/* If there was a task that was blocked on the semaphore, and giving the
	semaphore caused the task to unblock, and the unblocked task has a priority
	higher than the current Running state task (the task that this interrupt
	interrupted), then lHigherPriorityTaskWoken will have been set to pdTRUE
	internally within xSemaphoreGiveFromISR(). Passing pdTRUE into the
	portEND_SWITCHING_ISR() macro will result in a context switch being pended to
	ensure this interrupt returns directly to the unblocked, higher priority,
	task. Passing pdFALSE into portEND_SWITCHING_ISR() has no effect. */
	portEND_SWITCHING_ISR( lHigherPriorityTaskWoken );
	}

	#endif /* JUST_AN_EXAMPLE_ISR */