/*
 * FreeRTOS Kernel V10.3.1
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * 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.
 *
 * http://www.FreeRTOS.org
 * http://aws.amazon.com/freertos
 *
 * 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.
 *-----------------------------------------------------------
 */

    #include <avr/wdt.h>

/* Type definitions. */
    #define portCHAR      char
    #define portFLOAT     float
    #define portDOUBLE    double
    #define portLONG      long
    #define portSHORT     int

    typedef uint8_t        StackType_t;
    typedef int8_t         BaseType_t;
    typedef uint8_t        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
/*-----------------------------------------------------------*/

/* Critical section management. */

    #define portENTER_CRITICAL()                                                                                     \
    __asm__ __volatile__ (                                                                                           \
        "in __tmp_reg__, __SREG__"        "\n\t"                                                                     \
                                          "cli"                             "\n\t"                                   \
                                                                            "push __tmp_reg__"                "\n\t" \
        ::: "memory"                                                                                                 \
        )


    #define portEXIT_CRITICAL()                                                    \
    __asm__ __volatile__ (                                                         \
        "pop __tmp_reg__"                 "\n\t"                                   \
                                          "out __SREG__, __tmp_reg__"       "\n\t" \
        ::: "memory"                                                               \
        )


    #define portDISABLE_INTERRUPTS()    __asm__ __volatile__ ( "cli" ::: "memory" )
    #define portENABLE_INTERRUPTS()     __asm__ __volatile__ ( "sei" ::: "memory" )
/*-----------------------------------------------------------*/

/* Architecture specifics. */

/* System Tick  - Scheduler timer
 * Prefer to use the enhanced Watchdog Timer, but also Timer0 is ok.
 */

    #if defined( WDIE ) && defined( WDIF ) /* If Enhanced WDT with interrupt capability is available */

        #define portUSE_WDTO    WDTO_15MS  /* use the Watchdog Timer for xTaskIncrementTick */

/* Watchdog period options:         WDTO_15MS
 *                                  WDTO_30MS
 *                                  WDTO_60MS
 *                                  WDTO_120MS
 *                                  WDTO_250MS
 *                                  WDTO_500MS
 *                                  WDTO_1S
 *                                  WDTO_2S
 */

    #else

        #define portUSE_TIMER0    /* use the 8-bit Timer0 for xTaskIncrementTick */

    #endif

    #define portSTACK_GROWTH    ( -1 )

/* Timing for the scheduler.
 * Watchdog Timer is 128kHz nominal,
 * but 120 kHz at 5V DC and 25 degrees is actually more accurate,
 * from data sheet.
 */
    #if defined( portUSE_WDTO )
        #define portTICK_PERIOD_MS    ( ( TickType_t ) _BV( portUSE_WDTO + 4 ) )
    #else
        #define portTICK_PERIOD_MS    ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
    #endif

    #define portBYTE_ALIGNMENT        1
    #define portNOP()    __asm__ __volatile__ ( "nop" );
/*-----------------------------------------------------------*/

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

    extern void vPortYieldFromISR( void )   __attribute__( ( naked ) );
    #define portYIELD_FROM_ISR()    vPortYieldFromISR()
/*-----------------------------------------------------------*/

    #if defined( __AVR_3_BYTE_PC__ )
/* Task function macros as described on the FreeRTOS.org WEB site. */

/* Add .lowtext tag from the avr linker script avr6.x for ATmega2560 and ATmega2561
 * to make sure functions are loaded in low memory.
 */
        #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters ) __attribute__( ( section( ".lowtext" ) ) )
    #else
        #define portTASK_FUNCTION_PROTO( vFunction, pvParameters )    void vFunction( void * pvParameters )
    #endif

    #define portTASK_FUNCTION( vFunction, pvParameters )              void vFunction( void * pvParameters )

    #ifdef __cplusplus
        }
    #endif

#endif /* PORTMACRO_H */