/*
    FreeRTOS V8.2.0 - Copyright (C) 2015 Real Time Engineers Ltd.
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    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 on the following
    link: http://www.freertos.org/a00114.html

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
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    ***************************************************************************

    http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading
	the FAQ page "My application does not run, what could be wrong?".  Have you
	defined configASSERT()?

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    http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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    http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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    http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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    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	uint32_t
#define portBASE_TYPE	long

typedef portSTACK_TYPE StackType_t;
typedef long BaseType_t;
typedef unsigned long UBaseType_t;

typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL

/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
not need to be guarded with a critical section. */
#define portTICK_TYPE_IS_ATOMIC 1

/*-----------------------------------------------------------*/

/* Hardware specifics. */
#define portSTACK_GROWTH			( -1 )
#define portTICK_PERIOD_MS			( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portBYTE_ALIGNMENT			8

/*-----------------------------------------------------------*/

/* Task utilities. */

/* Called at the end of an ISR that can cause a context switch. */
#define portEND_SWITCHING_ISR( xSwitchRequired )\
{												\
extern uint32_t ulPortYieldRequired;			\
												\
	if( xSwitchRequired != pdFALSE )			\
	{											\
		ulPortYieldRequired = pdTRUE;			\
	}											\
}

#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
#define portYIELD() __asm volatile ( "SWI 0" );


/*-----------------------------------------------------------
 * Critical section control
 *----------------------------------------------------------*/

extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );
extern uint32_t ulPortSetInterruptMask( void );
extern void vPortClearInterruptMask( uint32_t ulNewMaskValue );
extern void vPortInstallFreeRTOSVectorTable( void );

/* These macros do not globally disable/enable interrupts.  They do mask off
interrupts that have a priority below configMAX_API_CALL_INTERRUPT_PRIORITY. */
#define portENTER_CRITICAL()		vPortEnterCritical();
#define portEXIT_CRITICAL()			vPortExitCritical();
#define portDISABLE_INTERRUPTS()	ulPortSetInterruptMask()
#define portENABLE_INTERRUPTS()		vPortClearInterruptMask( 0 )
#define portSET_INTERRUPT_MASK_FROM_ISR()		ulPortSetInterruptMask()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x)	vPortClearInterruptMask(x)

/*-----------------------------------------------------------*/

/* Task function macros as described on the FreeRTOS.org WEB site.  These are
not required for this port but included in case common demo code that uses these
macros is used. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters )	void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters )	void vFunction( void *pvParameters )

/* Prototype of the FreeRTOS tick handler.  This must be installed as the
handler for whichever peripheral is used to generate the RTOS tick. */
void FreeRTOS_Tick_Handler( void );

/* Any task that uses the floating point unit MUST call vPortTaskUsesFPU()
before any floating point instructions are executed. */
void vPortTaskUsesFPU( void );
#define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()

#define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL )
#define portLOWEST_USABLE_INTERRUPT_PRIORITY ( portLOWEST_INTERRUPT_PRIORITY - 1UL )

/* Architecture specific optimisations. */
#ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
	#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
#endif

#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1

	/* Store/clear the ready priorities in a bit map. */
	#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
	#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )

	/*-----------------------------------------------------------*/

	#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - __builtin_clz( uxReadyPriorities ) )

#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */

#ifdef configASSERT
	void vPortValidateInterruptPriority( void );
	#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() 	vPortValidateInterruptPriority()
#endif /* configASSERT */

#define portNOP() __asm volatile( "NOP" )


#ifdef __cplusplus
	} /* extern C */
#endif


/* The number of bits to shift for an interrupt priority is dependent on the
number of bits implemented by the interrupt controller. */
#if configUNIQUE_INTERRUPT_PRIORITIES == 16
	#define portPRIORITY_SHIFT 4
	#define portMAX_BINARY_POINT_VALUE	3
#elif configUNIQUE_INTERRUPT_PRIORITIES == 32
	#define portPRIORITY_SHIFT 3
	#define portMAX_BINARY_POINT_VALUE	2
#elif configUNIQUE_INTERRUPT_PRIORITIES == 64
	#define portPRIORITY_SHIFT 2
	#define portMAX_BINARY_POINT_VALUE	1
#elif configUNIQUE_INTERRUPT_PRIORITIES == 128
	#define portPRIORITY_SHIFT 1
	#define portMAX_BINARY_POINT_VALUE	0
#elif configUNIQUE_INTERRUPT_PRIORITIES == 256
	#define portPRIORITY_SHIFT 0
	#define portMAX_BINARY_POINT_VALUE	0
#else
	#error Invalid configUNIQUE_INTERRUPT_PRIORITIES setting.  configUNIQUE_INTERRUPT_PRIORITIES must be set to the number of unique priorities implemented by the target hardware
#endif

/* Interrupt controller access addresses. */
#define portICCPMR_PRIORITY_MASK_OFFSET  						( 0x04 )
#define portICCIAR_INTERRUPT_ACKNOWLEDGE_OFFSET 				( 0x0C )
#define portICCEOIR_END_OF_INTERRUPT_OFFSET 					( 0x10 )
#define portICCBPR_BINARY_POINT_OFFSET							( 0x08 )
#define portICCRPR_RUNNING_PRIORITY_OFFSET						( 0x14 )

#define portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS 		( configINTERRUPT_CONTROLLER_BASE_ADDRESS + configINTERRUPT_CONTROLLER_CPU_INTERFACE_OFFSET )
#define portICCPMR_PRIORITY_MASK_REGISTER 					( *( ( volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCPMR_PRIORITY_MASK_OFFSET ) ) )
#define portICCIAR_INTERRUPT_ACKNOWLEDGE_REGISTER_ADDRESS 	( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCIAR_INTERRUPT_ACKNOWLEDGE_OFFSET )
#define portICCEOIR_END_OF_INTERRUPT_REGISTER_ADDRESS 		( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCEOIR_END_OF_INTERRUPT_OFFSET )
#define portICCPMR_PRIORITY_MASK_REGISTER_ADDRESS 			( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCPMR_PRIORITY_MASK_OFFSET )
#define portICCBPR_BINARY_POINT_REGISTER 					( *( ( const volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCBPR_BINARY_POINT_OFFSET ) ) )
#define portICCRPR_RUNNING_PRIORITY_REGISTER 				( *( ( const volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCRPR_RUNNING_PRIORITY_OFFSET ) ) )

#endif /* PORTMACRO_H */