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 30 #ifndef PORTMACRO_H 31 #define PORTMACRO_H 32 33 /* *INDENT-OFF* */ 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 /* *INDENT-ON* */ 38 39 /*----------------------------------------------------------- 40 * Port specific definitions. 41 * 42 * The settings in this file configure FreeRTOS correctly for the 43 * given hardware and compiler. 44 * 45 * These settings should not be altered. 46 *----------------------------------------------------------- 47 */ 48 49 /* Type definitions. */ 50 #define portCHAR char 51 #define portFLOAT float 52 #define portDOUBLE double 53 #define portLONG long 54 #define portSHORT short 55 #define portSTACK_TYPE uint8_t 56 #define portBASE_TYPE char 57 58 typedef portSTACK_TYPE StackType_t; 59 typedef signed char BaseType_t; 60 typedef unsigned char UBaseType_t; 61 62 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS ) 63 typedef uint16_t TickType_t; 64 #define portMAX_DELAY ( TickType_t ) 0xffff 65 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS ) 66 typedef uint32_t TickType_t; 67 #define portMAX_DELAY ( TickType_t ) ( 0xFFFFFFFFUL ) 68 #else 69 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width. 70 #endif 71 /*-----------------------------------------------------------*/ 72 73 /* Hardware specifics. */ 74 #define portBYTE_ALIGNMENT 2 75 #define portSTACK_GROWTH ( -1 ) 76 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) 77 #define portYIELD() asm volatile ( "TRAPA #0" ) 78 #define portNOP() asm volatile ( "NOP" ) 79 /*-----------------------------------------------------------*/ 80 81 /* Critical section handling. */ 82 #define portENABLE_INTERRUPTS() asm volatile ( "ANDC #0x7F, CCR" ); 83 #define portDISABLE_INTERRUPTS() asm volatile ( "ORC #0x80, CCR" ); 84 85 /* Push the CCR then disable interrupts. */ 86 #define portENTER_CRITICAL() \ 87 asm volatile ( "STC CCR, @-ER7" ); \ 88 portDISABLE_INTERRUPTS(); 89 90 /* Pop the CCR to set the interrupt masking back to its previous state. */ 91 #define portEXIT_CRITICAL() asm volatile ( "LDC @ER7+, CCR" ); 92 /*-----------------------------------------------------------*/ 93 94 /* Task utilities. */ 95 96 /* Context switch macros. These macros are very simple as the context 97 * is saved simply by selecting the saveall attribute of the context switch 98 * interrupt service routines. These macros save and restore the stack 99 * pointer to the TCB. */ 100 101 #define portSAVE_STACK_POINTER() \ 102 extern void * pxCurrentTCB; \ 103 \ 104 asm volatile ( \ 105 "MOV.L @_pxCurrentTCB, ER5 \n\t" \ 106 "MOV.L ER7, @ER5 \n\t" \ 107 ); \ 108 ( void ) pxCurrentTCB; 109 110 111 #define portRESTORE_STACK_POINTER() \ 112 extern void * pxCurrentTCB; \ 113 \ 114 asm volatile ( \ 115 "MOV.L @_pxCurrentTCB, ER5 \n\t" \ 116 "MOV.L @ER5, ER7 \n\t" \ 117 ); \ 118 ( void ) pxCurrentTCB; 119 120 /*-----------------------------------------------------------*/ 121 122 /* Macros to allow a context switch from within an application ISR. */ 123 124 #define portENTER_SWITCHING_ISR() portSAVE_STACK_POINTER(); { 125 #define portEXIT_SWITCHING_ISR( x ) \ 126 if( x ) \ 127 { \ 128 extern void vTaskSwitchContext( void ); \ 129 vTaskSwitchContext(); \ 130 } \ 131 } \ 132 portRESTORE_STACK_POINTER(); 133 /*-----------------------------------------------------------*/ 134 135 /* Task function macros as described on the FreeRTOS.org WEB site. */ 136 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) 137 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters ) 138 139 /* *INDENT-OFF* */ 140 #ifdef __cplusplus 141 } 142 #endif 143 /* *INDENT-ON* */ 144 145 #endif /* PORTMACRO_H */ 146
