FreeRTOS/Source/portable/IAR/MSP430X/portmacro.h

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*/

#ifndef PORTMACRO_H
#define PORTMACRO_H

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

/* Hardware includes. */
#include "msp430.h"

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

/* The stack type changes depending on the data model. */
#if( __DATA_MODEL__ == __DATA_MODEL_SMALL__ )
	#define portSTACK_TYPE uint16_t
#else
	#define portSTACK_TYPE uint32_t
#endif

typedef portSTACK_TYPE StackType_t;
typedef short BaseType_t;
typedef unsigned short UBaseType_t;

#if( configUSE_16_BIT_TICKS == 1 )
	typedef uint16_t TickType_t;
	#define portMAX_DELAY ( TickType_t ) 0xffff
#else
	typedef uint32_t TickType_t;
	#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
#endif

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

/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS()	_DINT();_NOP()
#define portENABLE_INTERRUPTS()		_EINT()
/*-----------------------------------------------------------*/

/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING		( ( uint16_t ) 0 )

#define portENTER_CRITICAL()													\
{																				\
extern volatile uint16_t usCriticalNesting;								\
																				\
	portDISABLE_INTERRUPTS();													\
																				\
	/* Now interrupts are disabled usCriticalNesting can be accessed */			\
	/* directly.  Increment ulCriticalNesting to keep a count of how many */	\
	/* times portENTER_CRITICAL() has been called. */							\
	usCriticalNesting++;														\
}

#define portEXIT_CRITICAL()														\
{																				\
extern volatile uint16_t 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();											\
		}																		\
	}																			\
}
/*-----------------------------------------------------------*/

/* Task utilities. */

/*
 * Manual context switch called by portYIELD or taskYIELD.
 */
extern void vPortYield( void );
#define portYIELD() vPortYield()
/*-----------------------------------------------------------*/

/* Hardware specifics. */
#define portBYTE_ALIGNMENT			2
#define portSTACK_GROWTH			( -1 )
#define portTICK_RATE_MS			( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP()					__no_operation()
/*-----------------------------------------------------------*/

/* 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 )

extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) if( x ) vPortYield()

void vApplicationSetupTimerInterrupt( void );

/* sizeof( int ) != sizeof( long ) so a full printf() library is required if
run time stats information is to be displayed. */
#define portLU_PRINTF_SPECIFIER_REQUIRED

#endif /* PORTMACRO_H */