1 /* 2 * FreeRTOS Kernel V11.1.0 3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. 4 * 5 * SPDX-License-Identifier: MIT 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy of 8 * this software and associated documentation files (the "Software"), to deal in 9 * the Software without restriction, including without limitation the rights to 10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 11 * the Software, and to permit persons to whom the Software is furnished to do so, 12 * subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in all 15 * copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 19 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 20 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * https://www.FreeRTOS.org 25 * https://github.com/FreeRTOS 26 * 27 */ 28 29 #ifndef PORTMACRO_H 30 #define PORTMACRO_H 31 32 /* *INDENT-OFF* */ 33 #ifdef __cplusplus 34 extern "C" { 35 #endif 36 /* *INDENT-ON* */ 37 38 /*----------------------------------------------------------- 39 * Port specific definitions. 40 * 41 * The settings in this file configure FreeRTOS correctly for the 42 * given hardware and compiler. 43 * 44 * These settings should not be altered. 45 *----------------------------------------------------------- 46 */ 47 48 #include <avr/wdt.h> 49 50 /* Type definitions. */ 51 #define portCHAR char 52 #define portFLOAT float 53 #define portDOUBLE double 54 #define portLONG long 55 #define portSHORT int 56 57 #define portPOINTER_SIZE_TYPE uint16_t 58 59 typedef uint8_t StackType_t; 60 typedef int8_t BaseType_t; 61 typedef uint8_t UBaseType_t; 62 63 #if configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS 64 typedef uint16_t TickType_t; 65 #define portMAX_DELAY ( TickType_t ) 0xffff 66 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS ) 67 typedef uint32_t TickType_t; 68 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL 69 #else 70 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width. 71 #endif 72 /*-----------------------------------------------------------*/ 73 74 /* Critical section management. */ 75 76 #define portENTER_CRITICAL() \ 77 __asm__ __volatile__ ( \ 78 "in __tmp_reg__, __SREG__" "\n\t" \ 79 "cli" "\n\t" \ 80 "push __tmp_reg__" "\n\t" \ 81 ::: "memory" \ 82 ) 83 84 85 #define portEXIT_CRITICAL() \ 86 __asm__ __volatile__ ( \ 87 "pop __tmp_reg__" "\n\t" \ 88 "out __SREG__, __tmp_reg__" "\n\t" \ 89 ::: "memory" \ 90 ) 91 92 93 #define portDISABLE_INTERRUPTS() __asm__ __volatile__ ( "cli" ::: "memory" ) 94 #define portENABLE_INTERRUPTS() __asm__ __volatile__ ( "sei" ::: "memory" ) 95 /*-----------------------------------------------------------*/ 96 97 /* Architecture specifics. */ 98 99 /* System Tick - Scheduler timer 100 * Prefer to use the enhanced Watchdog Timer, but also Timer0 is ok. 101 */ 102 103 #if defined( WDIE ) && defined( WDIF ) /* If Enhanced WDT with interrupt capability is available */ 104 105 #define portUSE_WDTO WDTO_15MS /* use the Watchdog Timer for xTaskIncrementTick */ 106 107 /* Watchdog period options: WDTO_15MS 108 * WDTO_30MS 109 * WDTO_60MS 110 * WDTO_120MS 111 * WDTO_250MS 112 * WDTO_500MS 113 * WDTO_1S 114 * WDTO_2S 115 */ 116 117 #else 118 119 #define portUSE_TIMER0 /* use the 8-bit Timer0 for xTaskIncrementTick */ 120 121 #endif 122 123 #define portSTACK_GROWTH ( -1 ) 124 125 /* Timing for the scheduler. 126 * Watchdog Timer is 128kHz nominal, 127 * but 120 kHz at 5V DC and 25 degrees is actually more accurate, 128 * from data sheet. 129 */ 130 #if defined( portUSE_WDTO ) 131 #define portTICK_PERIOD_MS ( ( TickType_t ) _BV( portUSE_WDTO + 4 ) ) 132 #else 133 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) 134 #endif 135 136 #define portBYTE_ALIGNMENT 1 137 #define portNOP() __asm__ __volatile__ ( "nop" ); 138 /*-----------------------------------------------------------*/ 139 140 /* Kernel utilities. */ 141 extern void vPortYield( void ) __attribute__( ( naked ) ); 142 #define portYIELD() vPortYield() 143 144 extern void vPortYieldFromISR( void ) __attribute__( ( naked ) ); 145 #define portYIELD_FROM_ISR() vPortYieldFromISR() 146 /*-----------------------------------------------------------*/ 147 148 #if defined( __AVR_3_BYTE_PC__ ) 149 /* Task function macros as described on the FreeRTOS.org WEB site. */ 150 151 /* Add .lowtext tag from the avr linker script avr6.x for ATmega2560 and ATmega2561 152 * to make sure functions are loaded in low memory. 153 */ 154 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) __attribute__( ( section( ".lowtext" ) ) ) 155 #else 156 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) 157 #endif 158 159 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters ) 160 161 /* *INDENT-OFF* */ 162 #ifdef __cplusplus 163 } 164 #endif 165 /* *INDENT-ON* */ 166 167 #endif /* PORTMACRO_H */ 168
