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/*
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* FreeRTOS Kernel V10 .2 .0
* Copyright ( C ) 2019 Amazon . com , Inc . or its affiliates . All Rights Reserved .
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*
* 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
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* copies or substantial portions of the Software .
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*
* 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 .
*
* http : //www.FreeRTOS.org
* http : //aws.amazon.com/freertos
*
* 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 . */ \
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__asm volatile ( " dsb " : : : " memory " ) ; \
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__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)
# define portDISABLE_INTERRUPTS() vPortRaiseBASEPRI()
# 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 ) : " memory " ) ;
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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 ) )
/*-----------------------------------------------------------*/
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# define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( uint32_t ) ucPortCountLeadingZeros( ( uxReadyPriorities ) ) )
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# endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
/*-----------------------------------------------------------*/
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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
# ifndef portFORCE_INLINE
# define portFORCE_INLINE inline __attribute__(( always_inline))
# endif
portFORCE_INLINE static BaseType_t xPortIsInsideInterrupt ( void )
{
uint32_t ulCurrentInterrupt ;
BaseType_t xReturn ;
/* Obtain the number of the currently executing interrupt. */
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__asm volatile ( " mrs %0, ipsr " : " =r " ( ulCurrentInterrupt ) : : " memory " ) ;
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if ( ulCurrentInterrupt = = 0 )
{
xReturn = pdFALSE ;
}
else
{
xReturn = pdTRUE ;
}
return xReturn ;
}
/*-----------------------------------------------------------*/
portFORCE_INLINE static void vPortRaiseBASEPRI ( void )
{
uint32_t ulNewBASEPRI ;
__asm volatile
(
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" mov %0, %1 \n " \
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" msr basepri, %0 \n " \
" isb \n " \
" dsb \n " \
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: " =r " ( ulNewBASEPRI ) : " i " ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : " memory "
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) ;
}
/*-----------------------------------------------------------*/
portFORCE_INLINE static uint32_t ulPortRaiseBASEPRI ( void )
{
uint32_t ulOriginalBASEPRI , ulNewBASEPRI ;
__asm volatile
(
" mrs %0, basepri \n " \
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" mov %1, %2 \n " \
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" msr basepri, %1 \n " \
" isb \n " \
" dsb \n " \
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: " =r " ( ulOriginalBASEPRI ) , " =r " ( ulNewBASEPRI ) : " i " ( configMAX_SYSCALL_INTERRUPT_PRIORITY ) : " memory "
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) ;
/* 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
(
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" msr basepri, %0 " : : " r " ( ulNewMaskValue ) : " memory "
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) ;
}
/*-----------------------------------------------------------*/
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# ifdef __cplusplus
}
# endif
# endif /* PORTMACRO_H */