/* | |
FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* If you are: * | |
* * | |
* + New to FreeRTOS, * | |
* + Wanting to learn FreeRTOS or multitasking in general quickly * | |
* + Looking for basic training, * | |
* + Wanting to improve your FreeRTOS skills and productivity * | |
* * | |
* then take a look at the FreeRTOS books - available as PDF or paperback * | |
* * | |
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" * | |
* http://www.FreeRTOS.org/Documentation * | |
* * | |
* A pdf reference manual is also available. Both are usually delivered * | |
* to your inbox within 20 minutes to two hours when purchased between 8am * | |
* and 8pm GMT (although please allow up to 24 hours in case of * | |
* exceptional circumstances). 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 exception 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! | |
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 | |
/*----------------------------------------------------------- | |
* 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 int | |
#define portSTACK_TYPE unsigned portSHORT | |
#define portBASE_TYPE portSHORT | |
#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 | |
/*-----------------------------------------------------------*/ | |
/* Interrupt control macros. */ | |
#define portDISABLE_INTERRUPTS() _DINT(); | |
#define portENABLE_INTERRUPTS() _EINT(); | |
/*-----------------------------------------------------------*/ | |
/* Critical section control macros. */ | |
#define portNO_CRITICAL_SECTION_NESTING ( ( unsigned portSHORT ) 0 ) | |
#define portENTER_CRITICAL() \ | |
{ \ | |
extern volatile unsigned portSHORT usCriticalNesting; \ | |
\ | |
portDISABLE_INTERRUPTS(); \ | |
\ | |
/* Now interrupts are disabled usCriticalNesting can be accessed */ \ | |
/* directly. Increment ulCriticalNesting to keep a count of how many */ \ | |
/* times portENTER_CRITICAL() has been called. */ \ | |
usCriticalNesting++; \ | |
} | |
#define portEXIT_CRITICAL() \ | |
{ \ | |
extern volatile unsigned portSHORT usCriticalNesting; \ | |
\ | |
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \ | |
{ \ | |
/* Decrement the nesting count as we are leaving a critical section. */ \ | |
usCriticalNesting--; \ | |
\ | |
/* If the nesting level has reached zero then interrupts should be */ \ | |
/* re-enabled. */ \ | |
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \ | |
{ \ | |
portENABLE_INTERRUPTS(); \ | |
} \ | |
} \ | |
} | |
/*-----------------------------------------------------------*/ | |
/* Task utilities. */ | |
/* | |
* Manual context switch called by portYIELD or taskYIELD. | |
*/ | |
extern void vPortYield( void ); | |
#define portYIELD() vPortYield() | |
/*-----------------------------------------------------------*/ | |
/* Hardware specifics. */ | |
#define portBYTE_ALIGNMENT 2 | |
#define portSTACK_GROWTH ( -1 ) | |
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ ) | |
#define portNOP() | |
/*-----------------------------------------------------------*/ | |
/* 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 ) | |
#if configINTERRUPT_EXAMPLE_METHOD == 2 | |
extern void vTaskSwitchContext( void ); | |
#define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext() | |
#endif | |
#endif /* PORTMACRO_H */ | |