/*
FreeRTOS V7 .2 .0 - Copyright ( C ) 2012 Real Time Engineers Ltd .
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* FreeRTOS tutorial books are available in pdf and paperback . *
* Complete , revised , and edited pdf reference manuals are also *
* available . *
* *
* Purchasing FreeRTOS documentation will not only help you , by *
* ensuring you get running as quickly as possible and with an *
* in - depth knowledge of how to use FreeRTOS , it will also help *
* the FreeRTOS project to continue with its mission of providing *
* professional grade , cross platform , de facto standard solutions *
* for microcontrollers - completely free of charge ! *
* *
* > > > See http : //www.FreeRTOS.org/Documentation for details. <<< *
* *
* Thank you for using FreeRTOS , and thank you for your support ! *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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 .
> > > 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 . FreeRTOS is distributed in the hope that it will be useful , but
WITHOUT ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License for
more details . You should have received a copy of the GNU General Public
License and the FreeRTOS license exception along with FreeRTOS ; if not it
can be viewed here : http : //www.freertos.org/a00114.html and also obtained
by writing to Richard Barry , contact details for whom are available on the
FreeRTOS WEB site .
1 tab = = 4 spaces !
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* *
* Having a problem ? Start by reading the FAQ " My application does *
* not run , what could be wrong ? *
* *
* http : //www.FreeRTOS.org/FAQHelp.html *
* *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
http : //www.FreeRTOS.org - Documentation, training, latest information,
license and contact details .
http : //www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS + Trace - an indispensable productivity tool .
Real Time Engineers ltd license FreeRTOS to High Integrity Systems , who sell
the code with commercial support , indemnification , and middleware , under
the OpenRTOS brand : http : //www.OpenRTOS.com. High Integrity Systems also
provide a safety engineered and independently SIL3 certified version under
the SafeRTOS brand : http : //www.SafeRTOS.com.
*/
# ifndef PORTMACRO_H
# define PORTMACRO_H
/* System include files */
# include <plib.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 unsigned long
# define portBASE_TYPE long
# if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType ;
# define portMAX_DELAY ( portTickType ) 0xffff
# else
typedef unsigned long portTickType ;
# define portMAX_DELAY ( portTickType ) 0xffffffff
# endif
/*-----------------------------------------------------------*/
/* Hardware specifics. */
# define portBYTE_ALIGNMENT 8
# define portSTACK_GROWTH -1
# define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
/*-----------------------------------------------------------*/
/* Critical section management. */
# define portIPL_SHIFT ( 10UL )
# define portALL_IPL_BITS ( 0x3fUL << portIPL_SHIFT )
# define portSW0_BIT ( 0x01 << 8 )
/* This clears the IPL bits, then sets them to
configMAX_SYSCALL_INTERRUPT_PRIORITY . This function should not be called
from an interrupt , so therefore will not be called with an IPL setting
above configMAX_SYSCALL_INTERRUPT_PRIORITY . Therefore , when used correctly , the
instructions in this macro can only result in the IPL being raised , and
therefore never lowered . */
# define portDISABLE_INTERRUPTS() \
{ \
unsigned long ulStatus ; \
\
/* Mask interrupts at and below the kernel interrupt priority. */ \
ulStatus = _CP0_GET_STATUS ( ) ; \
ulStatus & = ~ portALL_IPL_BITS ; \
_CP0_SET_STATUS ( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY < < portIPL_SHIFT ) ) ) ; \
}
# define portENABLE_INTERRUPTS() \
{ \
unsigned long ulStatus ; \
\
/* Unmask all interrupts. */ \
ulStatus = _CP0_GET_STATUS ( ) ; \
ulStatus & = ~ portALL_IPL_BITS ; \
_CP0_SET_STATUS ( ulStatus ) ; \
}
extern void vTaskEnterCritical ( void ) ;
extern void vTaskExitCritical ( void ) ;
# define portCRITICAL_NESTING_IN_TCB 1
# define portENTER_CRITICAL() vTaskEnterCritical()
# define portEXIT_CRITICAL() vTaskExitCritical()
extern unsigned portBASE_TYPE uxPortSetInterruptMaskFromISR ( ) ;
extern void vPortClearInterruptMaskFromISR ( unsigned portBASE_TYPE ) ;
# define portSET_INTERRUPT_MASK_FROM_ISR() uxPortSetInterruptMaskFromISR()
# define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusRegister ) vPortClearInterruptMaskFromISR( uxSavedStatusRegister )
# if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* 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 = ( 31 - _clz( ( uxReadyPriorities ) ) )
# endif /* taskRECORD_READY_PRIORITY */
/*-----------------------------------------------------------*/
/* Task utilities. */
# define portYIELD() \
{ \
unsigned long ulStatus ; \
\
/* Trigger software interrupt. */ \
ulStatus = _CP0_GET_CAUSE ( ) ; \
ulStatus | = portSW0_BIT ; \
_CP0_SET_CAUSE ( ulStatus ) ; \
}
# define portNOP() asm volatile ( "nop" )
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */
# define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) __attribute__((noreturn))
# define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
/*-----------------------------------------------------------*/
# define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) \
{ \
portYIELD ( ) ; \
}
/* Required by the kernel aware debugger. */
# ifdef __DEBUG
# define portREMOVE_STATIC_QUALIFIER
# endif
# ifdef __cplusplus
}
# endif
# endif /* PORTMACRO_H */
