/* | |
* FreeRTOS Kernel <DEVELOPMENT BRANCH> | |
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* SPDX-License-Identifier: MIT | |
* | |
* 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. | |
* | |
* https://www.FreeRTOS.org | |
* https://github.com/FreeRTOS | |
* | |
*/ | |
#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. | |
*----------------------------------------------------------- | |
*/ | |
/* Type definitions. */ | |
#define portCHAR char | |
#define portFLOAT float | |
#define portDOUBLE double | |
#define portLONG long | |
#define portSHORT short | |
#define portSTACK_TYPE uint8_t | |
#define portBASE_TYPE char | |
typedef portSTACK_TYPE StackType_t; | |
typedef signed char BaseType_t; | |
typedef unsigned char 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 | |
/*-----------------------------------------------------------*/ | |
/* Hardware specifics. */ | |
#define portBYTE_ALIGNMENT 2 | |
#define portSTACK_GROWTH ( -1 ) | |
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) | |
#define portYIELD() asm volatile( "TRAPA #0" ) | |
#define portNOP() asm volatile( "NOP" ) | |
/*-----------------------------------------------------------*/ | |
/* Critical section handling. */ | |
#define portENABLE_INTERRUPTS() asm volatile( "ANDC #0x7F, CCR" ); | |
#define portDISABLE_INTERRUPTS() asm volatile( "ORC #0x80, CCR" ); | |
/* Push the CCR then disable interrupts. */ | |
#define portENTER_CRITICAL() asm volatile( "STC CCR, @-ER7" ); \ | |
portDISABLE_INTERRUPTS(); | |
/* Pop the CCR to set the interrupt masking back to its previous state. */ | |
#define portEXIT_CRITICAL() asm volatile( "LDC @ER7+, CCR" ); | |
/*-----------------------------------------------------------*/ | |
/* Task utilities. */ | |
/* Context switch macros. These macros are very simple as the context | |
is saved simply by selecting the saveall attribute of the context switch | |
interrupt service routines. These macros save and restore the stack | |
pointer to the TCB. */ | |
#define portSAVE_STACK_POINTER() \ | |
extern void* pxCurrentTCB; \ | |
\ | |
asm volatile( \ | |
"MOV.L @_pxCurrentTCB, ER5 \n\t" \ | |
"MOV.L ER7, @ER5 \n\t" \ | |
); \ | |
( void ) pxCurrentTCB; | |
#define portRESTORE_STACK_POINTER() \ | |
extern void* pxCurrentTCB; \ | |
\ | |
asm volatile( \ | |
"MOV.L @_pxCurrentTCB, ER5 \n\t" \ | |
"MOV.L @ER5, ER7 \n\t" \ | |
); \ | |
( void ) pxCurrentTCB; | |
/*-----------------------------------------------------------*/ | |
/* Macros to allow a context switch from within an application ISR. */ | |
#define portENTER_SWITCHING_ISR() portSAVE_STACK_POINTER(); { | |
#define portEXIT_SWITCHING_ISR( x ) \ | |
if( x ) \ | |
{ \ | |
extern void vTaskSwitchContext( void ); \ | |
vTaskSwitchContext(); \ | |
} \ | |
} portRESTORE_STACK_POINTER(); | |
/*-----------------------------------------------------------*/ | |
/* Task function macros as described on the FreeRTOS.org WEB site. */ | |
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* PORTMACRO_H */ | |