/*
    FreeRTOS V9.0.0 - Copyright (C) 2016 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,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that is more than just the market leader, it     *
     *    is the industry's de facto standard.                               *
     *                                                                       *
     *    Help yourself get started quickly while simultaneously helping     *
     *    to support the FreeRTOS project by purchasing a FreeRTOS           *
     *    tutorial book, reference manual, or both:                          *
     *    http://www.FreeRTOS.org/Documentation                              *
     *                                                                       *
    ***************************************************************************

    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()?

    http://www.FreeRTOS.org/support - In return for receiving this top quality
    embedded software for free we request you assist our global community by
    participating in the support forum.

    http://www.FreeRTOS.org/training - Investing in training allows your team to
    be as productive as possible as early as possible.  Now you can receive
    FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
    Ltd, and the world's leading authority on the world's leading RTOS.

    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.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
    Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

    http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
    Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and commercial 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!
*/

/* This file was separated prom original port.c by SDK team to enable efective tickless idle mode implementation. */

#ifndef FSL_TICKLESS_GENERIC_H
#define FSL_TICKLESS_GENERIC_H

#ifdef __cplusplus
extern "C" {
#endif

#ifndef configSYSTICK_CLOCK_HZ
	#define configSYSTICK_CLOCK_HZ			configCPU_CLOCK_HZ
	/* Ensure the SysTick is clocked at the same frequency as the core. */
	#define portNVIC_SYSTICK_CLK_BIT		( 1UL << 2UL )
#else
	/* The way the SysTick is clocked is not modified in case it is not the same
	as the core. */
	#define portNVIC_SYSTICK_CLK_BIT		( 0 )
#endif

/* Constants required to manipulate the NVIC. */
#define portNVIC_SYSTICK_CTRL				( ( volatile uint32_t *) 0xe000e010 )
#define portNVIC_SYSTICK_LOAD				( ( volatile uint32_t *) 0xe000e014 )
#define portNVIC_INT_CTRL					( ( volatile uint32_t *) 0xe000ed04 )
#define portNVIC_SYSPRI2					( ( volatile uint32_t *) 0xe000ed20 )
#define portNVIC_SYSTICK_CURRENT_VALUE_REG	( * ( ( volatile uint32_t * ) 0xe000e018 ) )
#define portNVIC_SYSTICK_CLK				0x00000004
#define portNVIC_SYSTICK_INT				0x00000002
#define portNVIC_SYSTICK_ENABLE				0x00000001
#define portNVIC_PENDSVSET					0x10000000
#define portMIN_INTERRUPT_PRIORITY			( 255UL )
#define portNVIC_PENDSV_PRI					( portMIN_INTERRUPT_PRIORITY << 16UL )
#define portNVIC_SYSTICK_PRI				( portMIN_INTERRUPT_PRIORITY << 24UL )

/* ...then bits in the registers. */
#define portNVIC_SYSTICK_INT_BIT			( 1UL << 1UL )
#define portNVIC_SYSTICK_ENABLE_BIT			( 1UL << 0UL )
#define portNVIC_SYSTICK_COUNT_FLAG_BIT		( 1UL << 16UL )
#define portNVIC_PENDSVCLEAR_BIT			( 1UL << 27UL )
#define portNVIC_PEND_SYSTICK_CLEAR_BIT		( 1UL << 25UL )

/* The systick is a 24-bit counter. */
#define portMAX_24_BIT_NUMBER				( 0xffffffUL )

/* The LPTMR is a 16-bit counter. */
#define portMAX_16_BIT_NUMBER				( 0xffffUL )

/* A fiddle factor to estimate the number of SysTick counts that would have
occurred while the SysTick counter is stopped during tickless idle
calculations. */
#define portMISSED_COUNTS_FACTOR			( 45UL )

/*
 * Setup the timer to generate the tick interrupts.
 */
void prvSetupTimerInterrupt( void );

#ifdef __cplusplus
}
#endif

#endif /* FSL_TICKLESS_GENERIC_H */
