Source/portable/GCC/ATMega323/portmacro.h

/*
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	Temple Place, Suite 330, Boston, MA  02111-1307  USA.


	***************************************************************************
	*                                                                         *
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	*                                                                         *
	* This is a concise, step by step, 'hands on' guide that describes both   *
	* general multitasking concepts and FreeRTOS specifics. It presents and   *
	* explains numerous examples that are written using the FreeRTOS API.     *
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	***************************************************************************

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

	http://www.FreeRTOS.org - Documentation, latest information, license and
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*/

/*
Changes from V1.2.3

	+ portCPU_CLOSK_HZ definition changed to 8MHz base 10, previously it 
	  base 16.
*/

#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		int
#define portSTACK_TYPE	unsigned portCHAR
#define portBASE_TYPE	char

#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
/*-----------------------------------------------------------*/	

/* Critical section management. */
#define portENTER_CRITICAL()		asm volatile ( "in		__tmp_reg__, __SREG__" :: );	\
									asm volatile ( "cli" :: );								\
									asm volatile ( "push	__tmp_reg__" :: )

#define portEXIT_CRITICAL()			asm volatile ( "pop		__tmp_reg__" :: );				\
									asm volatile ( "out		__SREG__, __tmp_reg__" :: )

#define portDISABLE_INTERRUPTS()	asm volatile ( "cli" :: );
#define portENABLE_INTERRUPTS()		asm volatile ( "sei" :: );
/*-----------------------------------------------------------*/

/* Architecture specifics. */
#define portSTACK_GROWTH			( -1 )
#define portTICK_RATE_MS			( ( portTickType ) 1000 / configTICK_RATE_HZ )		
#define portBYTE_ALIGNMENT			1
#define portNOP()					asm volatile ( "nop" );
/*-----------------------------------------------------------*/

/* Kernel utilities. */
extern void vPortYield( void ) __attribute__ ( ( naked ) );
#define portYIELD()					vPortYield()
/*-----------------------------------------------------------*/

/* 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 */