portmacro.h

FREE embed os FOR ARM ,51等多种MCU

/*
	FreeRTOS V2.5.2 - Copyright (C) 2003, 2004 Richard Barry.

	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 as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	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
	along with FreeRTOS; 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, 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.

	***************************************************************************
	See http://www.FreeRTOS.org for documentation, latest information, license 
	and contact details.  Please ensure to read the configuration and relevant 
	port sections of the online documentation.
	***************************************************************************
*/

#ifndef PORTMACRO_H
#define PORTMACRO_H

#include <p18cxxx.h>
#include <stddef.h>

/*-----------------------------------------------------------
 * Port specific definitions for the PIC port.
 *----------------------------------------------------------*/

/* These are the only definitions that can be modified!. */

#define portUSE_PREEMPTION			1
#define portTICK_RATE_HZ			( ( portTickType ) 1000 )
#define portCPU_CLOCK_HZ			( ( unsigned portLONG ) 20000000 )
#define portMAX_PRIORITIES			( 4 )
#define portMINIMAL_STACK_SIZE		( 105 )
#define portGLOBAL_INT_ENABLE_BIT	0x80
#define portTOTAL_HEAP_SIZE			( 1024 )

/* Set the following definitions to 1 to include the component, or zero
to exclude the component. */

/* Include/exclude the stated API function. */
#define INCLUDE_vTaskPrioritySet		0
#define INCLUDE_ucTaskPriorityGet		0
#define INCLUDE_vTaskDelete				1
#define INCLUDE_vTaskCleanUpResources	0
#define INCLUDE_vTaskSuspend			0

/* Use/don't use the trace visualisation. */
#define USE_TRACE_FACILITY				0

/* 
 * The tick count (and times defined in tick count units) can be either a 16bit
 * or a 32 bit value.  See documentation on http://www.FreeRTOS.org to decide
 * which to use.
 */
#define USE_16_BIT_TICKS	1


/*-----------------------------------------------------------
 * Do not modify anything below here. 
 *----------------------------------------------------------*/

#define portCHAR		char
#define portFLOAT		float
#define portDOUBLE		double
#define portLONG		long
#define portSHORT		int
#define portSTACK_TYPE	unsigned char

#if( USE_16_BIT_TICKS == 1 )
	typedef unsigned portSHORT portTickType;
	#define portMAX_DELAY ( portTickType ) 0xffff
#else
	typedef unsigned portLONG portTickType;
	#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif

#define portBYTE_ALIGNMENT			1

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

/* Macros to modify the global interrupt enable bits in INTCON. */
#define portDISABLE_INTERRUPTS()	INTCONbits.GIEH = 0;
#define portENABLE_INTERRUPTS()		INTCONbits.GIEH = 1;

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

/* Push the INTCON register onto the stack, then disable interrupts. */
#define portENTER_CRITICAL()		POSTINC1 = INTCON;				\
									INTCONbits.GIEH = 0;

/* Retrieve the INTCON register from the stack, and enable interrupts
if they were saved as being enabled.  Don't modify any other bits
within the INTCON register as these may have lagitimately have been
modified within the critical region. */
#define portEXIT_CRITICAL()			_asm									\
										MOVF	POSTDEC1, 1, 0				\
									_endasm									\
									if( INDF1 & portGLOBAL_INT_ENABLE_BIT )	\
									{										\
										portENABLE_INTERRUPTS();			\
									}
								
/*-----------------------------------------------------------*/

#define portSTACK_GROWTH			1

/*-----------------------------------------------------------*/
#define portTICK_RATE_MS			( ( portTickType ) 1000 / portTICK_RATE_HZ )		

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

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

#define inline

#endif /* PORTMACRO_H */