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/*
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FreeRTOS V9 .0 .0 - Copyright ( C ) 2016 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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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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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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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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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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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* 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 *
* tutorial book , reference manual , or both : *
* http : //www.FreeRTOS.org/Documentation *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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http : //www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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the FAQ page " My application does not run, what could be wrong? " . Have you
defined configASSERT ( ) ?
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http : //www.FreeRTOS.org/support - In return for receiving this top quality
embedded software for free we request you assist our global community by
participating in the support forum .
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http : //www.FreeRTOS.org/training - Investing in training allows your team to
be as productive as possible as early as possible . Now you can receive
FreeRTOS training directly from Richard Barry , CEO of Real Time Engineers
Ltd , and the world ' s leading authority on the world ' s leading RTOS .
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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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/* Constants used with memory barrier intrinsics. */
# define portSY_FULL_READ_WRITE ( 15 )
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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 . */ \
__dsb ( portSY_FULL_READ_WRITE ) ; \
__isb ( portSY_FULL_READ_WRITE ) ; \
}
/*-----------------------------------------------------------*/
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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 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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# define portSET_INTERRUPT_MASK_FROM_ISR() ulPortRaiseBASEPRI()
# define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortSetBASEPRI(x)
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/*-----------------------------------------------------------*/
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/* Tickless idle/low power functionality. */
# 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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/* Port 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
/* 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 ) )
/*-----------------------------------------------------------*/
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# define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( uint32_t ) __clz( ( uxReadyPriorities ) ) )
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# endif /* taskRECORD_READY_PRIORITY */
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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 . */
# define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
# define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
/*-----------------------------------------------------------*/
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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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# define portINLINE __inline
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# ifndef portFORCE_INLINE
# define portFORCE_INLINE __forceinline
# endif
/*-----------------------------------------------------------*/
static portFORCE_INLINE void vPortSetBASEPRI ( uint32_t ulBASEPRI )
{
__asm
{
/* Barrier instructions are not used as this function is only used to
lower the BASEPRI value . */
msr basepri , ulBASEPRI
}
}
/*-----------------------------------------------------------*/
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static portFORCE_INLINE void vPortRaiseBASEPRI ( void )
{
uint32_t ulNewBASEPRI = configMAX_SYSCALL_INTERRUPT_PRIORITY ;
__asm
{
/* Set BASEPRI to the max syscall priority to effect a critical
section . */
msr basepri , ulNewBASEPRI
dsb
isb
}
}
/*-----------------------------------------------------------*/
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static portFORCE_INLINE void vPortClearBASEPRIFromISR ( void )
{
__asm
{
/* Set BASEPRI to 0 so no interrupts are masked. This function is only
used to lower the mask in an interrupt , so memory barriers are not
used . */
msr basepri , # 0
}
}
/*-----------------------------------------------------------*/
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static portFORCE_INLINE uint32_t ulPortRaiseBASEPRI ( void )
{
uint32_t ulReturn , ulNewBASEPRI = configMAX_SYSCALL_INTERRUPT_PRIORITY ;
__asm
{
/* Set BASEPRI to the max syscall priority to effect a critical
section . */
mrs ulReturn , basepri
msr basepri , ulNewBASEPRI
dsb
isb
}
return ulReturn ;
}
/*-----------------------------------------------------------*/
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static portFORCE_INLINE BaseType_t xPortIsInsideInterrupt ( void )
{
uint32_t ulCurrentInterrupt ;
BaseType_t xReturn ;
/* Obtain the number of the currently executing interrupt. */
__asm
{
mrs ulCurrentInterrupt , ipsr
}
if ( ulCurrentInterrupt = = 0 )
{
xReturn = pdFALSE ;
}
else
{
xReturn = pdTRUE ;
}
return xReturn ;
}
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# ifdef __cplusplus
}
# endif
# endif /* PORTMACRO_H */