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/*
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FreeRTOS V8 .2 .0 rc1 - Copyright ( C ) 2014 Real Time Engineers Ltd .
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All rights reserved
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VISIT http : //www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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This file is part of the FreeRTOS distribution .
FreeRTOS is free software ; you can redistribute it and / or modify it under
the terms of the GNU General Public License ( version 2 ) as published by the
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Free Software Foundation > > ! AND MODIFIED BY ! < < the FreeRTOS exception .
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> > ! NOTE : The modification to the GPL is included to allow you to ! < <
> > ! distribute a combined work that includes FreeRTOS without being ! < <
> > ! obliged to provide the source code for proprietary components ! < <
> > ! outside of the FreeRTOS kernel . ! < <
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FreeRTOS is distributed in the hope that it will be useful , but WITHOUT ANY
WARRANTY ; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE . Full license text is available on the following
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link : http : //www.freertos.org/a00114.html
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1 tab = = 4 spaces !
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* *
* Having a problem ? Start by reading the FAQ " My application does *
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* not run , what could be wrong ? " . Have you defined configASSERT()? *
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* *
* http : //www.FreeRTOS.org/FAQHelp.html *
* *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* FreeRTOS provides completely free yet professionally developed , *
* robust , strictly quality controlled , supported , and cross *
* platform software that is more than just the market leader , it *
* is the industry ' s de facto standard . *
* *
* Help yourself get started quickly while simultaneously helping *
* to support the FreeRTOS project by purchasing a FreeRTOS *
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* http : //www.FreeRTOS.org/Documentation *
* *
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* *
* Investing in training allows your team to be as productive as *
* possible as early as possible , lowering your overall development *
* cost , and enabling you to bring a more robust product to market *
* earlier than would otherwise be possible . Richard Barry is both *
* the architect and key author of FreeRTOS , and so also the world ' s *
* leading authority on what is the world ' s most popular real time *
* kernel for deeply embedded MCU designs . Obtaining your training *
* from Richard ensures your team will gain directly from his in - depth *
* product knowledge and years of usage experience . Contact Real Time *
* Engineers Ltd to enquire about the FreeRTOS Masterclass , presented *
* by Richard Barry : http : //www.FreeRTOS.org/contact
* *
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http : //www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd . contact details .
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http : //www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS + Trace - an indispensable productivity tool , a DOS
compatible FAT file system , and our tiny thread aware UDP / IP stack .
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http : //www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
Come and try FreeRTOS + TCP , our new open source TCP / IP stack for FreeRTOS .
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http : //www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems ltd . to sell under the OpenRTOS brand . Low cost OpenRTOS
licenses offer ticketed support , indemnification and commercial middleware .
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http : //www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability .
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1 tab = = 4 spaces !
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*/
# ifndef PORTMACRO_H
# define PORTMACRO_H
# ifdef __cplusplus
extern " C " {
# endif
/*-----------------------------------------------------------
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* Port specific definitions .
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*
* 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
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# define portSTACK_TYPE uint32_t
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# define portBASE_TYPE long
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typedef portSTACK_TYPE StackType_t ;
typedef long BaseType_t ;
typedef unsigned long UBaseType_t ;
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# if( configUSE_16_BIT_TICKS == 1 )
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typedef uint16_t TickType_t ;
# define portMAX_DELAY ( TickType_t ) 0xffff
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# else
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typedef uint32_t TickType_t ;
# define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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/* 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
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# endif
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/*-----------------------------------------------------------*/
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/* Architecture specifics. */
# define portSTACK_GROWTH ( -1 )
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# define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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# define portBYTE_ALIGNMENT 8
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/*-----------------------------------------------------------*/
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/* Scheduler utilities. */
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# define portYIELD() \
{ \
/* Set a PendSV to request a context switch. */ \
portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT ; \
\
/* Barriers are normally not required but do ensure the code is completely \
within the specified behaviour for the architecture . */ \
__asm volatile ( " dsb " ) ; \
__asm volatile ( " isb " ) ; \
}
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# define portNVIC_INT_CTRL_REG ( * ( ( volatile uint32_t * ) 0xe000ed04 ) )
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# define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
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# define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired != pdFALSE ) portYIELD()
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# define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
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/*-----------------------------------------------------------*/
/* Critical section management. */
extern void vPortEnterCritical ( void ) ;
extern void vPortExitCritical ( void ) ;
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# define portSET_INTERRUPT_MASK_FROM_ISR() ulPortRaiseBASEPRI()
# define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortSetBASEPRI(x)
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# define portDISABLE_INTERRUPTS() vPortRaiseBASEPRI()
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# define portENABLE_INTERRUPTS() vPortSetBASEPRI(0)
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# define portENTER_CRITICAL() vPortEnterCritical()
# define portEXIT_CRITICAL() vPortExitCritical()
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/*-----------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. These are
not necessary for to use this port . They are defined so the common demo files
( which build with all the ports ) will build . */
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# define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
# define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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/*-----------------------------------------------------------*/
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/* Tickless idle/low power functionality. */
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# ifndef portSUPPRESS_TICKS_AND_SLEEP
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extern void vPortSuppressTicksAndSleep ( TickType_t xExpectedIdleTime ) ;
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# define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
# endif
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/*-----------------------------------------------------------*/
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/* Architecture specific optimisations. */
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# ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
# define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
# endif
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# if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* Generic helper function. */
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__attribute__ ( ( always_inline ) ) static inline uint8_t ucPortCountLeadingZeros ( uint32_t ulBitmap )
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{
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uint8_t ucReturn ;
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__asm volatile ( " clz %0, %1 " : " =r " ( ucReturn ) : " r " ( ulBitmap ) ) ;
return ucReturn ;
}
/* Check the configuration. */
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# if( configMAX_PRIORITIES > 32 )
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# error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
# endif
/* 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 = ( 31 - ucPortCountLeadingZeros( ( uxReadyPriorities ) ) )
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# endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
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/*-----------------------------------------------------------*/
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# ifdef configASSERT
void vPortValidateInterruptPriority ( void ) ;
# define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
# endif
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/* portNOP() is not required by this port. */
# define portNOP()
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# ifndef portFORCE_INLINE
# define portFORCE_INLINE inline __attribute__(( always_inline))
# endif
/*-----------------------------------------------------------*/
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portFORCE_INLINE static void vPortRaiseBASEPRI ( void )
{
uint32_t ulNewBASEPRI ;
__asm volatile
(
" mov %0, %1 \n " \
" msr basepri, %0 \n " \
" isb \n " \
" dsb \n " \
: " =r " ( ulNewBASEPRI ) : " i " ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
) ;
}
/*-----------------------------------------------------------*/
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portFORCE_INLINE static uint32_t ulPortRaiseBASEPRI ( void )
{
uint32_t ulOriginalBASEPRI , ulNewBASEPRI ;
__asm volatile
(
" mrs %0, basepri \n " \
" mov %1, %2 \n " \
" msr basepri, %1 \n " \
" isb \n " \
" dsb \n " \
: " =r " ( ulOriginalBASEPRI ) , " =r " ( ulNewBASEPRI ) : " i " ( configMAX_SYSCALL_INTERRUPT_PRIORITY )
) ;
/* This return will not be reached but is necessary to prevent compiler
warnings . */
return ulOriginalBASEPRI ;
}
/*-----------------------------------------------------------*/
portFORCE_INLINE static void vPortSetBASEPRI ( uint32_t ulNewMaskValue )
{
__asm volatile
(
" msr basepri, %0 " : : " r " ( ulNewMaskValue )
) ;
}
/*-----------------------------------------------------------*/
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# ifdef __cplusplus
}
# endif
# endif /* PORTMACRO_H */