main.c

FreeRTOS source code as bundled with the book "Using FreeRTOS Real-Time Kernel - A Practical Approac

/*
	FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.

	This file is part of the FreeRTOS.org distribution.

	FreeRTOS.org is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	FreeRTOS.org is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with FreeRTOS.org; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

	A special exception to the GPL can be applied should you wish to distribute
	a combined work that includes FreeRTOS.org, without being obliged to provide
	the source code for any proprietary components.  See the licensing section 
	of http://www.FreeRTOS.org for full details of how and when the exception
	can be applied.

    ***************************************************************************
    ***************************************************************************
    *                                                                         *
    * SAVE TIME AND MONEY!  We can port FreeRTOS.org to your own hardware,    *
    * and even write all or part of your application on your behalf.          *
    * See http://www.OpenRTOS.com for details of the services we provide to   *
    * expedite your project.                                                  *
    *                                                                         *
    ***************************************************************************
    ***************************************************************************

	Please ensure to read the configuration and relevant port sections of the
	online documentation.

	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.
*/

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

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

/* The task function. */
void vTaskFunction( void *pvParameters );

/* A variable that is incremented by the idle task hook function. */
static unsigned long ulIdleCycleCount = 0UL;

/* Define the strings that will be passed in as the task parameters.  These are
defined const and off the stack to ensure they remain valid when the tasks are
executing. */
const char *pcTextForTask1 = "Task 1 is running\r\n";
const char *pcTextForTask2 = "Task 2 is running\t\n";

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

int main( void )
{
	/* Create the first task at priority 1... */
	xTaskCreate( vTaskFunction, "Task 1", 1000, (void*)pcTextForTask1, 1, NULL );

	/* ... and the second task at priority 2.  The priority is the second to
	last parameter. */
	xTaskCreate( vTaskFunction, "Task 2", 1000, (void*)pcTextForTask2, 2, NULL );

	/* Start the scheduler so our tasks start executing. */
	vTaskStartScheduler();	
	
	for( ;; );
	return 0;
}
/*-----------------------------------------------------------*/

void vTaskFunction( void *pvParameters )
{
char *pcTaskName;

	/* The string to print out is passed in via the parameter.  Cast this to a
	character pointer. */
	pcTaskName = ( char * ) pvParameters;

	/* As per most tasks, this task is implemented in an infinite loop. */
	for( ;; )
	{
		/* Print out the name of this task AND the number of times ulIdleCycleCount
        has been incremented. */
		vPrintStringAndNumber( pcTaskName, ulIdleCycleCount );

		/* Delay for a period.  This time we use a call to vTaskDelay() which
		puts the task into the Blocked state until the delay period has expired.
		The delay period is specified in 'ticks'. */
		vTaskDelay( 250 / portTICK_RATE_MS );
	}
}
/*-----------------------------------------------------------*/

/* Idle hook functions MUST be called vApplicationIdleHook(), take no parameters,
and return void. */
void vApplicationIdleHook( void )
{
	/* This hook function does nothing but increment a counter. */
	ulIdleCycleCount++;
}