2 * FreeRTOS Kernel V10.4.5
3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * SPDX-License-Identifier: MIT
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:
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
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.
24 * https://www.FreeRTOS.org
25 * https://github.com/FreeRTOS
36 /*-----------------------------------------------------------
37 * Port specific definitions.
39 * The settings in this file configure FreeRTOS correctly for the
40 * given hardware and compiler.
42 * These settings should not be altered.
43 *-----------------------------------------------------------
48 /* Type definitions. */
50 #define portFLOAT float
51 #define portDOUBLE double
55 typedef uint8_t StackType_t;
56 typedef int8_t BaseType_t;
57 typedef uint8_t UBaseType_t;
59 #if configUSE_16_BIT_TICKS == 1
60 typedef uint16_t TickType_t;
61 #define portMAX_DELAY ( TickType_t ) 0xffff
63 typedef uint32_t TickType_t;
64 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
66 /*-----------------------------------------------------------*/
68 /* Critical section management. */
70 #define portENTER_CRITICAL() __asm__ __volatile__ ( \
71 "in __tmp_reg__, __SREG__" "\n\t" \
73 "push __tmp_reg__" "\n\t" \
78 #define portEXIT_CRITICAL() __asm__ __volatile__ ( \
79 "pop __tmp_reg__" "\n\t" \
80 "out __SREG__, __tmp_reg__" "\n\t" \
85 #define portDISABLE_INTERRUPTS() __asm__ __volatile__ ( "cli" ::: "memory")
86 #define portENABLE_INTERRUPTS() __asm__ __volatile__ ( "sei" ::: "memory")
87 /*-----------------------------------------------------------*/
89 /* Architecture specifics. */
91 /* System Tick - Scheduler timer
92 * Prefer to use the enhanced Watchdog Timer, but also Timer0 is ok.
95 #if defined(WDIE) && defined(WDIF) /* If Enhanced WDT with interrupt capability is available */
97 #define portUSE_WDTO WDTO_15MS /* use the Watchdog Timer for xTaskIncrementTick */
99 /* Watchdog period options: WDTO_15MS
111 #define portUSE_TIMER0 /* use the 8-bit Timer0 for xTaskIncrementTick */
115 #define portSTACK_GROWTH ( -1 )
117 /* Timing for the scheduler.
118 * Watchdog Timer is 128kHz nominal,
119 * but 120 kHz at 5V DC and 25 degrees is actually more accurate,
122 #if defined( portUSE_WDTO )
123 #define portTICK_PERIOD_MS ( (TickType_t) _BV( portUSE_WDTO + 4 ) )
125 #define portTICK_PERIOD_MS ( (TickType_t) 1000 / configTICK_RATE_HZ )
128 #define portBYTE_ALIGNMENT 1
129 #define portNOP() __asm__ __volatile__ ( "nop" );
130 /*-----------------------------------------------------------*/
132 /* Kernel utilities. */
133 extern void vPortYield( void ) __attribute__ ( ( naked ) );
134 #define portYIELD() vPortYield()
136 extern void vPortYieldFromISR( void ) __attribute__ ( ( naked ) );
137 #define portYIELD_FROM_ISR() vPortYieldFromISR()
138 /*-----------------------------------------------------------*/
140 #if defined(__AVR_3_BYTE_PC__)
141 /* Task function macros as described on the FreeRTOS.org WEB site. */
143 /* Add .lowtext tag from the avr linker script avr6.x for ATmega2560 and ATmega2561
144 * to make sure functions are loaded in low memory.
146 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) __attribute__ ((section (".lowtext")))
148 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
151 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
157 #endif /* PORTMACRO_H */