/*
	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.
*/


#ifndef PORTMACRO_H
#define PORTMACRO_H

#ifdef __cplusplus
extern "C" {
#endif

/*-----------------------------------------------------------
 * Port specific definitions.  
 *
 * The settings in this file configure FreeRTOS correctly for the
 * given hardware and compiler.
 *
 * These settings should not be altered.
 *-----------------------------------------------------------
 */

/* Type definitions. */
#define portCHAR		char
#define portFLOAT		float
#define portDOUBLE		double
#define portLONG		long
#define portSHORT		short
#define portSTACK_TYPE	unsigned portLONG
#define portBASE_TYPE	portLONG

#if( configUSE_16_BIT_TICKS == 1 )
	typedef unsigned portSHORT portTickType;
	#define portMAX_DELAY ( portTickType ) 0xffff
#else
	typedef unsigned portLONG portTickType;
	#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/	

/* Hardware specifics. */
#define portSTACK_GROWTH			( -1 )
#define portTICK_RATE_MS			( ( portTickType ) 1000 / configTICK_RATE_HZ )		
#define portBYTE_ALIGNMENT			4
/*-----------------------------------------------------------*/	

/* Task utilities. */

/*-----------------------------------------------------------
 * ISR entry and exit macros.  These are only required if a task switch
 * is required from an ISR.
 *----------------------------------------------------------*/

/* If a switch is required then we just need to call */	
/* vTaskSwitchContext() as the context has already been */
/* saved. */

#define portEXIT_SWITCHING_ISR(SwitchRequired)				 \
{															 \
extern void vTaskSwitchContext(void);						 \
															 \
		if(SwitchRequired)									 \
		{													 \
			vTaskSwitchContext();							 \
		}													 \
}															 \

extern void vPortYield( void );
#define portYIELD() vPortYield()


/* Critical section management. */

/*
 ****************************************************************** 
 * We don't need to worry about whether we're in ARM or
 * THUMB mode with the Keil Real View compiler when enabling 
 * or disabling interrupts as the compiler's intrinsic functions 
 * take care of that for us.
 *******************************************************************
 */
#define portDISABLE_INTERRUPTS()	__disable_irq()					
#define portENABLE_INTERRUPTS()		__enable_irq()


/*-----------------------------------------------------------
 * Critical section control
 *
 * The code generated by the Keil compiler does not maintain separate
 * stack and frame pointers. The portENTER_CRITICAL macro cannot therefore
 * use the stack as per other ports.  Instead a variable is used to keep
 * track of the critical section nesting.  This necessitates the use of a 
 * function in place of the macro.
 *----------------------------------------------------------*/

extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );

#define portENTER_CRITICAL()		vPortEnterCritical();
#define portEXIT_CRITICAL()			vPortExitCritical();
/*-----------------------------------------------------------*/	

/* Compiler specifics. */
#define inline
#define register
#define portNOP()	__asm{ NOP }
/*-----------------------------------------------------------*/	

/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters )	void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters )	void vFunction( void *pvParameters )

#ifdef __cplusplus
}
#endif

#endif /* PORTMACRO_H */