2016-04-26 01:24:54 +08:00
/*
2017-01-22 13:28:13 +08:00
FreeRTOS V9 .0 .1 - Copyright ( C ) 2017 Real Time Engineers Ltd .
2016-04-26 01:24:54 +08:00
All rights reserved
VISIT http : //www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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
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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* *
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http : //www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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Come and try FreeRTOS + TCP , our new open source TCP / IP stack for FreeRTOS .
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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
mission critical applications that require provable dependability .
1 tab = = 4 spaces !
*/
# 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 .
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
/* The compiler needs to be told functions that are only referenced by pointer
are to be included in the build . NOTE : Omitting these lines will result in a
run - time crash , not a linker error ! */
# pragma funcall vTaskStartScheduler prvIdleTask
# pragma funcall xTimerCreateTimerTask prvTimerTask
/* 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 ;
# 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
/* 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
# endif
/*-----------------------------------------------------------*/
/* Architecture specifics. */
# define portSTACK_GROWTH ( -1 )
# define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
# define portBYTE_ALIGNMENT 8
/*-----------------------------------------------------------*/
/* Scheduler utilities. */
# 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 { dsb } ; \
__asm { isb } ; \
}
# define portNVIC_INT_CTRL_REG ( * ( ( volatile uint32_t * ) 0xe000ed04 ) )
# define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
# define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired != pdFALSE ) portYIELD()
# define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
/*-----------------------------------------------------------*/
/* Critical section management. */
extern void vPortEnterCritical ( void ) ;
extern void vPortExitCritical ( void ) ;
# define portDISABLE_INTERRUPTS() CPU_REG_SET( CPU_BASEPRI, configMAX_SYSCALL_INTERRUPT_PRIORITY ); __asm{ dsb }; __asm{ isb }
# define portENABLE_INTERRUPTS() CPU_REG_SET( CPU_BASEPRI, 0 );
# define portENTER_CRITICAL() vPortEnterCritical()
# define portEXIT_CRITICAL() vPortExitCritical()
# define portSET_INTERRUPT_MASK_FROM_ISR() ulPortRaiseBASEPRI()
# define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) CPU_REG_SET( CPU_BASEPRI, x ); /* Barrier instructions not used as this is only used to lower the basepri. */
/*-----------------------------------------------------------*/
/* 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 )
/*-----------------------------------------------------------*/
/* Tickless idle/low power functionality. */
# ifndef portSUPPRESS_TICKS_AND_SLEEP
extern void vPortSuppressTicksAndSleep ( TickType_t xExpectedIdleTime ) ;
# define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
# endif
/*-----------------------------------------------------------*/
/* Architecture specific optimisations. */
# ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
# define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
# endif
# if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* Generic helper function. */
__attribute__ ( ( always_inline ) ) static inline uint8_t ucPortCountLeadingZeros ( uint32_t ulBitmap )
{
uint8_t ucReturn ;
__asm volatile ( " clz %0, %1 " : " =r " ( ucReturn ) : " r " ( ulBitmap ) ) ;
return ucReturn ;
}
/* Check the configuration. */
# if( configMAX_PRIORITIES > 32 )
# 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 = ( 31UL - ( uint32_t ) ucPortCountLeadingZeros( ( uxReadyPriorities ) ) )
# endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
/*-----------------------------------------------------------*/
# ifdef configASSERT
void vPortValidateInterruptPriority ( void ) ;
# define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
# endif
/* portNOP() is not required by this port. */
# define portNOP()
BaseType_t xPortIsInsideInterrupt ( void ) ;
/*-----------------------------------------------------------*/
static inline uint32_t ulPortRaiseBASEPRI ( void )
{
uint32_t ulOriginalBASEPRI ;
ulOriginalBASEPRI = CPU_REG_GET ( CPU_BASEPRI ) ;
CPU_REG_SET ( CPU_BASEPRI , configMAX_SYSCALL_INTERRUPT_PRIORITY ) ;
__asm { dsb } ;
__asm { isb } ;
return ulOriginalBASEPRI ;
}
/*-----------------------------------------------------------*/
# ifdef __cplusplus
}
# endif
# endif /* PORTMACRO_H */