/* | |
* 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 | |
#include <intrinsics.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 uint32_t | |
#define portBASE_TYPE long | |
typedef portSTACK_TYPE StackType_t; | |
typedef long BaseType_t; | |
typedef unsigned long UBaseType_t; | |
typedef uint32_t TickType_t; | |
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL | |
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do | |
not need to be guarded with a critical section. */ | |
#define portTICK_TYPE_IS_ATOMIC 1 | |
/*-----------------------------------------------------------*/ | |
/* Hardware specifics. */ | |
#define portSTACK_GROWTH ( -1 ) | |
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) | |
#define portBYTE_ALIGNMENT 8 | |
/*-----------------------------------------------------------*/ | |
/* Task utilities. */ | |
/* Called at the end of an ISR that can cause a context switch. */ | |
#define portEND_SWITCHING_ISR( xSwitchRequired )\ | |
{ \ | |
extern volatile uint32_t ulPortYieldRequired; \ | |
\ | |
if( xSwitchRequired != pdFALSE ) \ | |
{ \ | |
ulPortYieldRequired = pdTRUE; \ | |
} \ | |
} | |
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x ) | |
#define portYIELD() __asm volatile ( "SWI 0 \n" \ | |
"ISB " ); | |
/*----------------------------------------------------------- | |
* Critical section control | |
*----------------------------------------------------------*/ | |
extern void vPortEnterCritical( void ); | |
extern void vPortExitCritical( void ); | |
extern uint32_t ulPortSetInterruptMask( void ); | |
extern void vPortClearInterruptMask( uint32_t ulNewMaskValue ); | |
extern void vPortInstallFreeRTOSVectorTable( void ); | |
/* The I bit within the CPSR. */ | |
#define portINTERRUPT_ENABLE_BIT ( 1 << 7 ) | |
/* In the absence of a priority mask register, these functions and macros | |
globally enable and disable interrupts. */ | |
#define portENTER_CRITICAL() vPortEnterCritical(); | |
#define portEXIT_CRITICAL() vPortExitCritical(); | |
#define portENABLE_INTERRUPTS() __asm volatile ( "CPSIE i \n" ); | |
#define portDISABLE_INTERRUPTS() __asm volatile ( "CPSID i \n" \ | |
"DSB \n" \ | |
"ISB " ); | |
#pragma inline | |
static inline uint32_t portINLINE_SET_INTERRUPT_MASK_FROM_ISR( void ) | |
{ | |
volatile uint32_t ulCPSR; | |
__asm volatile ( "MRS %0, CPSR" : "=r" (ulCPSR) ); | |
ulCPSR &= portINTERRUPT_ENABLE_BIT; | |
portDISABLE_INTERRUPTS(); | |
return ulCPSR; | |
} | |
#define portSET_INTERRUPT_MASK_FROM_ISR() portINLINE_SET_INTERRUPT_MASK_FROM_ISR() | |
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) do { if( x == 0 ) portENABLE_INTERRUPTS(); } while( 0 ) | |
/*-----------------------------------------------------------*/ | |
/* Task function macros as described on the FreeRTOS.org WEB site. These are | |
not required for this port but included in case common demo code that uses these | |
macros is used. */ | |
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
/* Prototype of the FreeRTOS tick handler. This must be installed as the | |
handler for whichever peripheral is used to generate the RTOS tick. */ | |
void FreeRTOS_Tick_Handler( void ); | |
/* Any task that uses the floating point unit MUST call vPortTaskUsesFPU() | |
before any floating point instructions are executed. */ | |
void vPortTaskUsesFPU( void ); | |
#define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU() | |
#define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL ) | |
#define portLOWEST_USABLE_INTERRUPT_PRIORITY ( portLOWEST_INTERRUPT_PRIORITY - 1UL ) | |
/* Architecture specific optimisations. */ | |
#ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION | |
#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1 | |
#endif | |
#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1 | |
/* Store/clear the ready priorities in a bit map. */ | |
#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) ) | |
#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) ) | |
/*-----------------------------------------------------------*/ | |
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( uint32_t ) __CLZ( uxReadyPriorities ) ) | |
#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */ | |
#define portNOP() __asm volatile( "NOP" ) | |
#define portINLINE inline | |
/* Suppress warnings that are generated by the IAR tools, but cannot be fixed in | |
the source code because to do so would cause other compilers to generate | |
warnings. */ | |
#pragma diag_suppress=Pe191 | |
#pragma diag_suppress=Pa082 | |
#ifdef __cplusplus | |
} /* extern C */ | |
#endif | |
#endif /* PORTMACRO_H */ | |