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

/* Hardware definition header file. */
#include <msp430x44x.h>

/*-----------------------------------------------------------
 * Port specific definitions for the MSP430 port.
 *----------------------------------------------------------*/

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

#define portUSE_PREEMPTION		1
#define portCPU_CLOCK_HZ		( ( unsigned portLONG ) 7995392 ) /* Clock setup from main.c in the demo application. */
#define portTICK_RATE_HZ		( ( portTickType ) 1000 )
#define portMAX_PRIORITIES		( ( unsigned portCHAR ) 4 )
#define portMINIMAL_STACK_SIZE	( ( unsigned portSHORT ) 50 )
#define portTOTAL_HEAP_SIZE		( ( unsigned portSHORT ) ( 1800 ) )

/* 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 portSHORT

#define portBYTE_ALIGNMENT			2

#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

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

/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS()	asm volatile ( "DINT" )
#define portENABLE_INTERRUPTS()		asm volatile ( "EINT" )

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

/* Critical section control macros. */

#define portNO_CRITICAL_SECTION_NESTING		( ( unsigned portSHORT ) 0 )

#define portENTER_CRITICAL()													\
{																				\
extern portSHORT usCriticalNesting;												\
																				\
	portDISABLE_INTERRUPTS();													\
																				\
	/* Now interrupts are disabled ulCriticalNesting can be accessed */			\
	/* directly.  Increment ulCriticalNesting to keep a count of how many */	\
	/* times portENTER_CRITICAL() has been called. */							\
	usCriticalNesting++;														\
}

#define portEXIT_CRITICAL()														\
{																				\
extern portSHORT usCriticalNesting;												\
																				\
	if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )					\
	{																			\
		/* Decrement the nesting count as we are leaving a critical section. */	\
		usCriticalNesting--;													\
																				\
		/* If the nesting level has reached zero then interrupts should be */	\
		/* re-enabled. */														\
		if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )				\
		{																		\
			portENABLE_INTERRUPTS();											\
		}																		\
	}																			\
}

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

/* Misc macros. */

extern void vPortYield( void ) __attribute__ ( ( naked ) );

#define portYIELD()					vPortYield()
#define portSTACK_GROWTH			( -1 )
#define portTICK_RATE_MS			( ( portTickType ) 1000 / portTICK_RATE_HZ )		

#endif /* PORTMACRO_H */