/* | |
FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry. | |
This file is part of the FreeRTOS.org distribution. | |
FreeRTOS.org is free software; you can redistribute it and/or modify | |
it under the terms of the GNU General Public License as published by | |
the Free Software Foundation; either version 2 of the License, or | |
(at your option) any later version. | |
FreeRTOS.org 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 | |
along with FreeRTOS.org; if not, write to the Free Software | |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
A special exception to the GPL can be applied should you wish to distribute | |
a combined work that includes FreeRTOS.org, without being obliged to provide | |
the source code for any proprietary components. See the licensing section | |
of http://www.FreeRTOS.org for full details of how and when the exception | |
can be applied. | |
*************************************************************************** | |
*************************************************************************** | |
* * | |
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation * | |
* * | |
* This is a concise, step by step, 'hands on' guide that describes both * | |
* general multitasking concepts and FreeRTOS specifics. It presents and * | |
* explains numerous examples that are written using the FreeRTOS API. * | |
* Full source code for all the examples is provided in an accompanying * | |
* .zip file. * | |
* * | |
*************************************************************************** | |
*************************************************************************** | |
Please ensure to read the configuration and relevant port sections of the | |
online documentation. | |
http://www.FreeRTOS.org - Documentation, latest information, license and | |
contact details. | |
http://www.SafeRTOS.com - A version that is certified for use in safety | |
critical systems. | |
http://www.OpenRTOS.com - Commercial support, development, porting, | |
licensing and training services. | |
*/ | |
#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. | |
*----------------------------------------------------------- | |
*/ | |
/* 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 | |
#else | |
typedef unsigned portLONG portTickType; | |
#define portMAX_DELAY ( portTickType ) 0xffffffff | |
#endif | |
/*-----------------------------------------------------------*/ | |
/* 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" ); \ | |
portDISABLE_INTERRUPTS(); | |
/* 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; | |
#define portRESTORE_STACK_POINTER() \ | |
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 portENTER_SWITCHING_ISR() portSAVE_STACK_POINTER(); { | |
#define portEXIT_SWITCHING_ISR( x ) \ | |
if( x ) \ | |
{ \ | |
extern void vTaskSwitchContext( void ); \ | |
vTaskSwitchContext(); \ | |
} \ | |
} portRESTORE_STACK_POINTER(); | |
/*-----------------------------------------------------------*/ | |
/* Task function macros as described on the FreeRTOS.org WEB site. */ | |
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* PORTMACRO_H */ | |