Demo/RX600_RX62N-RDK_IAR/main-blinky.c - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /*
     FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.

     ***************************************************************************
     *                                                                         *
     * If you are:                                                             *
     *                                                                         *
     *    + New to FreeRTOS,                                                   *
     *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
     *    + Looking for basic training,                                        *
     *    + Wanting to improve your FreeRTOS skills and productivity           *
     *                                                                         *
     * then take a look at the FreeRTOS books - available as PDF or paperback  *
     *                                                                         *
     *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
     *                  http://www.FreeRTOS.org/Documentation                  *
     *                                                                         *
     * A pdf reference manual is also available.  Both are usually delivered   *
     * to your inbox within 20 minutes to two hours when purchased between 8am *
     * and 8pm GMT (although please allow up to 24 hours in case of            *
     * exceptional circumstances).  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 exception 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!

     http://www.FreeRTOS.org - Documentation, latest information, license and
     contact details.

     http://www.SafeRTOS.com - A version that is certified for use in safety
     critical systems.

     http://www.OpenRTOS.com - Commercial support, development, porting,
     licensing and training services.
 */

 /*
  * This is a very simple demo that creates two tasks and one queue.  One task
  * (the queue receive task) blocks on the queue to wait for data to arrive,
  * toggling an LED each time '100' is received.  The other task (the queue send
  * task) repeatedly blocks for a fixed period before sending '100' to the queue
  * (causing the first task to toggle the LED).
  *
  * For a much more complete and complex example select either the Debug or
  * Debug_with_optimisation build configurations within the Embedded Workbench
  * IDE.
 */

 /* Hardware specific includes. */
 #include <iorx62n.h>

 /* Kernel includes. */
 #include "FreeRTOS.h"
 #include "task.h"
 #include "queue.h"

 /* Demo includes. */
 #include "partest.h"

 /* Priorities at which the tasks are created. */
 #define configQUEUE_RECEIVE_TASK_PRIORITY	( tskIDLE_PRIORITY + 1 )
 #define	configQUEUE_SEND_TASK_PRIORITY		( tskIDLE_PRIORITY + 2 )

 /* The rate at which data is sent to the queue, specified in milliseconds. */
 #define mainQUEUE_SEND_FREQUENCY_MS			( 500 / portTICK_RATE_MS )

 /* The number of items the queue can hold.  This is 1 as the receive task
 will remove items as they are added so the send task should always find the
 queue empty. */
 #define mainQUEUE_LENGTH					( 1 )

 /*
  * The tasks as defined at the top of this file.
  */
 static void prvQueueReceiveTask( void *pvParameters );
 static void prvQueueSendTask( void *pvParameters );

 /* The queue used by both tasks. */
 static xQueueHandle xQueue = NULL;

 /* This variable is not used by this simple Blinky example.  It is defined
 purely to allow the project to link as it is used by the full project. */
 volatile unsigned long ulHighFrequencyTickCount = 0UL;
 /*-----------------------------------------------------------*/

 void main(void)
 {
 extern void HardwareSetup( void );

 	/* Renesas provided CPU configuration routine.  The clocks are configured in
 	here. */
 	HardwareSetup();

 	/* Create the queue. */
 	xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );

 	if( xQueue != NULL )
 	{
 		/* Start the two tasks as described at the top of this file. */
 		xTaskCreate( prvQueueReceiveTask, "Rx", configMINIMAL_STACK_SIZE, NULL, configQUEUE_RECEIVE_TASK_PRIORITY, NULL );
 		xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, configQUEUE_SEND_TASK_PRIORITY, NULL );

 		/* Start the tasks running. */
 		vTaskStartScheduler();
 	}

 	/* If all is well we will never reach here as the scheduler will now be
 	running.  If we do reach here then it is likely that there was insufficient
 	heap available for the idle task to be created. */
 	for( ;; );
 }
 /*-----------------------------------------------------------*/

 static void prvQueueSendTask( void *pvParameters )
 {
 portTickType xNextWakeTime;
 const unsigned long ulValueToSend = 100UL;

 	/* Initialise xNextWakeTime - this only needs to be done once. */
 	xNextWakeTime = xTaskGetTickCount();

 	for( ;; )
 	{
 		/* Place this task in the blocked state until it is time to run again.
 		The block state is specified in ticks, the constant used converts ticks
 		to ms. */
 		vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );

 		/* Send to the queue - causing the queue receive task to flash its LED.  0
 		is used so the send does not block - it shouldn't need to as the queue
 		should always be empty here. */
 		xQueueSend( xQueue, &ulValueToSend, 0 );
 	}
 }
 /*-----------------------------------------------------------*/

 static void prvQueueReceiveTask( void *pvParameters )
 {
 unsigned long ulReceivedValue;

 	for( ;; )
 	{
 		/* Wait until something arives in the queue - this will block
 		indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
 		FreeRTOSConfig.h. */
 		xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );

 		/*  To get here something must have arrived, but is it the expected
 		value?  If it is, toggle the LED. */
 		if( ulReceivedValue == 100UL )
 		{
 			vParTestToggleLED( 0 );
 		}
 	}
 }
 /*-----------------------------------------------------------*/

 void vApplicationSetupTimerInterrupt( void )
 {
 	/* Enable compare match timer 0. */
 	MSTP( CMT0 ) = 0;

 	/* Interrupt on compare match. */
 	CMT0.CMCR.BIT.CMIE = 1;

 	/* Set the compare match value. */
 	CMT0.CMCOR = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / configTICK_RATE_HZ ) -1 ) / 8 );

 	/* Divide the PCLK by 8. */
 	CMT0.CMCR.BIT.CKS = 0;

 	/* Enable the interrupt... */
 	_IEN( _CMT0_CMI0 ) = 1;

 	/* ...and set its priority to the application defined kernel priority. */
 	_IPR( _CMT0_CMI0 ) = configKERNEL_INTERRUPT_PRIORITY;

 	/* Start the timer. */
 	CMT.CMSTR0.BIT.STR0 = 1;
 }
 /*-----------------------------------------------------------*/

 /* This function is explained by the comments above its prototype at the top
 of this file. */
 void vApplicationMallocFailedHook( void )
 {
 	for( ;; );
 }
 /*-----------------------------------------------------------*/

 /* This function is explained by the comments above its prototype at the top
 of this file. */
 void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed char *pcTaskName )
 {
 	for( ;; );
 }
 /*-----------------------------------------------------------*/

 /* This function is explained by the comments above its prototype at the top
 of this file. */
 void vApplicationIdleHook( void )
 {
 	/* Just to prevent the variable getting optimised away. */
 	( void ) ulHighFrequencyTickCount;
 }
 /*-----------------------------------------------------------*/

 /* The following two functions are here just to allow all three build
 configurations to use the same vector table.  They are not used in this
 demo, but linker errors will result if they are not defined.  They can
 be ignored. */
 void vT0_1InterruptHandler( void ) {}
 void vT2_3InterruptHandler( void ) {}
	/*
	FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.

	***************************************************************************
	* *
	* If you are: *
	* *
	* + New to FreeRTOS, *
	* + Wanting to learn FreeRTOS or multitasking in general quickly *
	* + Looking for basic training, *
	* + Wanting to improve your FreeRTOS skills and productivity *
	* *
	* then take a look at the FreeRTOS books - available as PDF or paperback *
	* *
	* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
	* http://www.FreeRTOS.org/Documentation *
	* *
	* A pdf reference manual is also available. Both are usually delivered *
	* to your inbox within 20 minutes to two hours when purchased between 8am *
	* and 8pm GMT (although please allow up to 24 hours in case of *
	* exceptional circumstances). 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 exception 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!

	http://www.FreeRTOS.org - Documentation, latest information, license and
	contact details.

	http://www.SafeRTOS.com - A version that is certified for use in safety
	critical systems.

	http://www.OpenRTOS.com - Commercial support, development, porting,
	licensing and training services.
	*/

	/*
	* This is a very simple demo that creates two tasks and one queue. One task
	* (the queue receive task) blocks on the queue to wait for data to arrive,
	* toggling an LED each time '100' is received. The other task (the queue send
	* task) repeatedly blocks for a fixed period before sending '100' to the queue
	* (causing the first task to toggle the LED).
	*
	* For a much more complete and complex example select either the Debug or
	* Debug_with_optimisation build configurations within the Embedded Workbench
	* IDE.
	*/

	/* Hardware specific includes. */
	#include <iorx62n.h>

	/* Kernel includes. */
	#include "FreeRTOS.h"
	#include "task.h"
	#include "queue.h"

	/* Demo includes. */
	#include "partest.h"

	/* Priorities at which the tasks are created. */
	#define configQUEUE_RECEIVE_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
	#define configQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )

	/* The rate at which data is sent to the queue, specified in milliseconds. */
	#define mainQUEUE_SEND_FREQUENCY_MS ( 500 / portTICK_RATE_MS )

	/* The number of items the queue can hold. This is 1 as the receive task
	will remove items as they are added so the send task should always find the
	queue empty. */
	#define mainQUEUE_LENGTH ( 1 )

	/*
	* The tasks as defined at the top of this file.
	*/
	static void prvQueueReceiveTask( void *pvParameters );
	static void prvQueueSendTask( void *pvParameters );

	/* The queue used by both tasks. */
	static xQueueHandle xQueue = NULL;

	/* This variable is not used by this simple Blinky example. It is defined
	purely to allow the project to link as it is used by the full project. */
	volatile unsigned long ulHighFrequencyTickCount = 0UL;
	/-----------------------------------------------------------/

	void main(void)
	{
	extern void HardwareSetup( void );

	/* Renesas provided CPU configuration routine. The clocks are configured in
	here. */
	HardwareSetup();

	/* Create the queue. */
	xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );

	if( xQueue != NULL )
	{
	/* Start the two tasks as described at the top of this file. */
	xTaskCreate( prvQueueReceiveTask, "Rx", configMINIMAL_STACK_SIZE, NULL, configQUEUE_RECEIVE_TASK_PRIORITY, NULL );
	xTaskCreate( prvQueueSendTask, "TX", configMINIMAL_STACK_SIZE, NULL, configQUEUE_SEND_TASK_PRIORITY, NULL );

	/* Start the tasks running. */
	vTaskStartScheduler();
	}

	/* If all is well we will never reach here as the scheduler will now be
	running. If we do reach here then it is likely that there was insufficient
	heap available for the idle task to be created. */
	for( ;; );
	}
	/-----------------------------------------------------------/

	static void prvQueueSendTask( void *pvParameters )
	{
	portTickType xNextWakeTime;
	const unsigned long ulValueToSend = 100UL;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
	/* Place this task in the blocked state until it is time to run again.
	The block state is specified in ticks, the constant used converts ticks
	to ms. */
	vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );

	/* Send to the queue - causing the queue receive task to flash its LED. 0
	is used so the send does not block - it shouldn't need to as the queue
	should always be empty here. */
	xQueueSend( xQueue, &ulValueToSend, 0 );
	}
	}
	/-----------------------------------------------------------/

	static void prvQueueReceiveTask( void *pvParameters )
	{
	unsigned long ulReceivedValue;

	for( ;; )
	{
	/* Wait until something arives in the queue - this will block
	indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
	FreeRTOSConfig.h. */
	xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );

	/* To get here something must have arrived, but is it the expected
	value? If it is, toggle the LED. */
	if( ulReceivedValue == 100UL )
	{
	vParTestToggleLED( 0 );
	}
	}
	}
	/-----------------------------------------------------------/

	void vApplicationSetupTimerInterrupt( void )
	{
	/* Enable compare match timer 0. */
	MSTP( CMT0 ) = 0;

	/* Interrupt on compare match. */
	CMT0.CMCR.BIT.CMIE = 1;

	/* Set the compare match value. */
	CMT0.CMCOR = ( unsigned short ) ( ( ( configPERIPHERAL_CLOCK_HZ / configTICK_RATE_HZ ) -1 ) / 8 );

	/* Divide the PCLK by 8. */
	CMT0.CMCR.BIT.CKS = 0;

	/* Enable the interrupt... */
	_IEN( _CMT0_CMI0 ) = 1;

	/* ...and set its priority to the application defined kernel priority. */
	_IPR( _CMT0_CMI0 ) = configKERNEL_INTERRUPT_PRIORITY;

	/* Start the timer. */
	CMT.CMSTR0.BIT.STR0 = 1;
	}
	/-----------------------------------------------------------/

	/* This function is explained by the comments above its prototype at the top
	of this file. */
	void vApplicationMallocFailedHook( void )
	{
	for( ;; );
	}
	/-----------------------------------------------------------/

	/* This function is explained by the comments above its prototype at the top
	of this file. */
	void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char pcTaskName )
	{
	for( ;; );
	}
	/-----------------------------------------------------------/

	/* This function is explained by the comments above its prototype at the top
	of this file. */
	void vApplicationIdleHook( void )
	{
	/* Just to prevent the variable getting optimised away. */
	( void ) ulHighFrequencyTickCount;
	}
	/-----------------------------------------------------------/

	/* The following two functions are here just to allow all three build
	configurations to use the same vector table. They are not used in this
	demo, but linker errors will result if they are not defined. They can
	be ignored. */
	void vT0_1InterruptHandler( void ) {}
	void vT2_3InterruptHandler( void ) {}