/*
 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */

#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.
 *-----------------------------------------------------------
 */

/* Type definitions. */
#define portCHAR		char
#define portFLOAT		float
#define portDOUBLE		double
#define portLONG		long
#define portSHORT		int
#define portSTACK_TYPE	uint16_t
#define portBASE_TYPE	short

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_PERIOD_MS			( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP()
/*-----------------------------------------------------------*/

/* 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 ) __toplevel

#if configINTERRUPT_EXAMPLE_METHOD == 2

extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) do { if( x ) vTaskSwitchContext(); } while( 0 )

#endif

#endif /* PORTMACRO_H */