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FreeRTOS V7.4.1 - Copyright (C) 2013 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 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
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: and also obtained by
writing to Real Time Engineers Ltd., contact details for whom are available
on the FreeRTOS WEB site.
1 tab == 4 spaces!
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* *
* *
*************************************************************************** - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details. - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, and our new
fully thread aware and reentrant UDP/IP stack. - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems, who sell the code with commercial support,
indemnification and middleware, under the OpenRTOS brand. - 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.
#ifdef __cplusplus
extern "C" {
* 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 portCHAR
#define portBASE_TYPE char
#if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType;
#define portMAX_DELAY ( portTickType ) 0xffff
typedef unsigned portLONG portTickType;
#define portMAX_DELAY ( portTickType ) 0xffffffff
/* Hardware specifics. */
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
#define portYIELD() asm volatile( "TRAPA #0" )
#define portNOP() asm volatile( "NOP" )
/* Critical section handling. */
#define portENABLE_INTERRUPTS() asm volatile( "ANDC #0x7F, CCR" );
#define portDISABLE_INTERRUPTS() asm volatile( "ORC #0x80, CCR" );
/* Push the CCR then disable interrupts. */
#define portENTER_CRITICAL() asm volatile( "STC CCR, @-ER7" ); \
/* Pop the CCR to set the interrupt masking back to its previous state. */
#define portEXIT_CRITICAL() asm volatile( "LDC @ER7+, CCR" );
/* Task utilities. */
/* Context switch macros. These macros are very simple as the context
is saved simply by selecting the saveall attribute of the context switch
interrupt service routines. These macros save and restore the stack
pointer to the TCB. */
#define portSAVE_STACK_POINTER() \
extern void* pxCurrentTCB; \
asm volatile( \
"MOV.L @_pxCurrentTCB, ER5 \n\t" \
"MOV.L ER7, @ER5 \n\t" \
); \
( void ) pxCurrentTCB;
extern void* pxCurrentTCB; \
asm volatile( \
"MOV.L @_pxCurrentTCB, ER5 \n\t" \
"MOV.L @ER5, ER7 \n\t" \
); \
( void ) pxCurrentTCB;
/* Macros to allow a context switch from within an application ISR. */
#define portEXIT_SWITCHING_ISR( x ) \
if( x ) \
{ \
extern void vTaskSwitchContext( void ); \
vTaskSwitchContext(); \
} \
/* Task function macros as described on the WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
#ifdef __cplusplus
#endif /* PORTMACRO_H */