/*
    FreeRTOS V7.5.1 - Copyright (C) 2013 Real Time Engineers Ltd.

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that has become a de facto standard.             *
     *                                                                       *
     *    Help yourself get started quickly and support the FreeRTOS         *
     *    project by purchasing a FreeRTOS tutorial book, reference          *
     *    manual, or both from: http://www.FreeRTOS.org/Documentation        *
     *                                                                       *
     *    Thank you!                                                         *
     *                                                                       *
    ***************************************************************************

    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 (version 2) as published by the
    Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.

    >>! NOTE: The modification to the GPL is included to allow you to distribute
    >>! a combined work that includes FreeRTOS without being obliged to provide
    >>! the source code for proprietary components outside of the FreeRTOS
    >>! kernel.

    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.  Full license text is available from the following
    link: http://www.freertos.org/a00114.html

    1 tab == 4 spaces!

    ***************************************************************************
     *                                                                       *
     *    Having a problem?  Start by reading the FAQ "My application does   *
     *    not run, what could be wrong?"                                     *
     *                                                                       *
     *    http://www.FreeRTOS.org/FAQHelp.html                               *
     *                                                                       *
    ***************************************************************************

    http://www.FreeRTOS.org - Documentation, books, training, latest versions,
    license and Real Time Engineers Ltd. contact details.

    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
    including FreeRTOS+Trace - an indispensable productivity tool, a DOS
    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
    Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and middleware.

    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
    engineered and independently SIL3 certified version for use in safety and
    mission critical applications that require provable dependability.

    1 tab == 4 spaces!
*/


#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	long

#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
/*-----------------------------------------------------------*/

/* MPU specific constants. */
#define portUSING_MPU_WRAPPERS		1
#define portPRIVILEGE_BIT			( 0x80000000UL )

#define portMPU_REGION_READ_WRITE				( 0x03UL << 24UL )
#define portMPU_REGION_PRIVILEGED_READ_ONLY		( 0x05UL << 24UL )
#define portMPU_REGION_READ_ONLY				( 0x06UL << 24UL )
#define portMPU_REGION_PRIVILEGED_READ_WRITE	( 0x01UL << 24UL )
#define portMPU_REGION_CACHEABLE_BUFFERABLE		( 0x07UL << 16UL )
#define portMPU_REGION_EXECUTE_NEVER			( 0x01UL << 28UL )

#define portUNPRIVILEGED_FLASH_REGION		( 0UL )
#define portPRIVILEGED_FLASH_REGION			( 1UL )
#define portPRIVILEGED_RAM_REGION			( 2UL )
#define portGENERAL_PERIPHERALS_REGION		( 3UL )
#define portSTACK_REGION					( 4UL )
#define portFIRST_CONFIGURABLE_REGION	    ( 5UL )
#define portLAST_CONFIGURABLE_REGION		( 7UL )
#define portNUM_CONFIGURABLE_REGIONS		( ( portLAST_CONFIGURABLE_REGION - portFIRST_CONFIGURABLE_REGION ) + 1 )
#define portTOTAL_NUM_REGIONS				( portNUM_CONFIGURABLE_REGIONS + 1 ) /* Plus one to make space for the stack region. */

#define portSWITCH_TO_USER_MODE() __asm volatile ( " mrs r0, control \n orr r0, #1 \n msr control, r0 " :::"r0" )

typedef struct MPU_REGION_REGISTERS
{
	unsigned portLONG ulRegionBaseAddress;
	unsigned portLONG ulRegionAttribute;
} xMPU_REGION_REGISTERS;

/* Plus 1 to create space for the stack region. */
typedef struct MPU_SETTINGS
{
	xMPU_REGION_REGISTERS xRegion[ portTOTAL_NUM_REGIONS ];
} xMPU_SETTINGS;

/* Architecture specifics. */
#define portSTACK_GROWTH			( -1 )
#define portTICK_RATE_MS			( ( portTickType ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT			8
/*-----------------------------------------------------------*/

/* SVC numbers for various services. */
#define portSVC_START_SCHEDULER				0
#define portSVC_YIELD						1
#define portSVC_RAISE_PRIVILEGE				2

/* Scheduler utilities. */

#define portYIELD()				__asm volatile ( "	SVC	%0	\n" :: "i" (portSVC_YIELD) )
#define portYIELD_WITHIN_API()	*(portNVIC_INT_CTRL) = portNVIC_PENDSVSET

#define portNVIC_INT_CTRL			( ( volatile unsigned portLONG *) 0xe000ed04 )
#define portNVIC_PENDSVSET			0x10000000
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
/*-----------------------------------------------------------*/


/* Critical section management. */

/*
 * Set basepri to portMAX_SYSCALL_INTERRUPT_PRIORITY without effecting other
 * registers.  r0 is clobbered.
 */
#define portSET_INTERRUPT_MASK()						\
	__asm volatile										\
	(													\
		"	mov r0, %0								\n"	\
		"	msr basepri, r0							\n" \
		::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY):"r0"	\
	)

/*
 * Set basepri back to 0 without effective other registers.
 * r0 is clobbered.  FAQ:  Setting BASEPRI to 0 is not a bug.  Please see
 * http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html before disagreeing.
 */
#define portCLEAR_INTERRUPT_MASK()			\
	__asm volatile							\
	(										\
		"	mov r0, #0					\n"	\
		"	msr basepri, r0				\n"	\
		:::"r0"								\
	)

/* FAQ:  Setting BASEPRI to 0 is not a bug.  Please see
http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html before disagreeing. */
#define portSET_INTERRUPT_MASK_FROM_ISR()		0;portSET_INTERRUPT_MASK()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x)	portCLEAR_INTERRUPT_MASK();(void)x


extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );

#define portDISABLE_INTERRUPTS()	portSET_INTERRUPT_MASK()
#define portENABLE_INTERRUPTS()		portCLEAR_INTERRUPT_MASK()
#define portENTER_CRITICAL()		vPortEnterCritical()
#define portEXIT_CRITICAL()			vPortExitCritical()
/*-----------------------------------------------------------*/

/* 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 )

#define portNOP()


#ifdef __cplusplus
}
#endif

#endif /* PORTMACRO_H */