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383 lines
16 KiB
C
383 lines
16 KiB
C
/*
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FreeRTOS V7.4.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS tutorial books are available in pdf and paperback. *
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* Complete, revised, and edited pdf reference manuals are also *
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* available. *
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* *
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* Purchasing FreeRTOS documentation will not only help you, by *
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* ensuring you get running as quickly as possible and with an *
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* in-depth knowledge of how to use FreeRTOS, it will also help *
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* the FreeRTOS project to continue with its mission of providing *
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* professional grade, cross platform, de facto standard solutions *
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* for microcontrollers - completely free of charge! *
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* *
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* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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* *
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* Thank you for using FreeRTOS, and thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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>>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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distribute a combined work that includes FreeRTOS without being obliged to
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provide the source code for proprietary components outside of the FreeRTOS
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kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details. You should have received a copy of the GNU General Public License
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and the FreeRTOS license exception along with FreeRTOS; if not it can be
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viewed here: http://www.freertos.org/a00114.html and also obtained by
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writing to Real Time Engineers Ltd., contact details for whom are available
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on the FreeRTOS WEB site.
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, and our new
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fully thread aware and reentrant UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems, who sell the code with commercial support,
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indemnification and middleware, under the OpenRTOS brand.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* BSP includes. */
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#include <mb_interface.h>
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#include <xparameters.h>
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/*-----------------------------------------------------------
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* Port specific definitions.
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*
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* The settings in this file configure FreeRTOS correctly for the
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* given hardware and compiler.
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*
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* These settings should not be altered.
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*-----------------------------------------------------------
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*/
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/* Type definitions. */
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#define portCHAR char
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#define portFLOAT float
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#define portDOUBLE double
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#define portLONG long
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#define portSHORT short
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#define portSTACK_TYPE unsigned long
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#define portBASE_TYPE long
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#if( configUSE_16_BIT_TICKS == 1 )
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typedef unsigned portSHORT portTickType;
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#define portMAX_DELAY ( portTickType ) 0xffff
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#else
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typedef unsigned portLONG portTickType;
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#define portMAX_DELAY ( portTickType ) 0xffffffff
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#endif
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/*-----------------------------------------------------------*/
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/* Interrupt control macros and functions. */
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void microblaze_disable_interrupts( void );
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void microblaze_enable_interrupts( void );
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#define portDISABLE_INTERRUPTS() microblaze_disable_interrupts()
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#define portENABLE_INTERRUPTS() microblaze_enable_interrupts()
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/*-----------------------------------------------------------*/
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/* Critical section macros. */
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void vPortEnterCritical( void );
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void vPortExitCritical( void );
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#define portENTER_CRITICAL() { \
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extern volatile unsigned portBASE_TYPE uxCriticalNesting; \
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microblaze_disable_interrupts(); \
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uxCriticalNesting++; \
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}
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#define portEXIT_CRITICAL() { \
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extern volatile unsigned portBASE_TYPE uxCriticalNesting; \
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/* Interrupts are disabled, so we can */ \
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/* access the variable directly. */ \
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uxCriticalNesting--; \
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if( uxCriticalNesting == 0 ) \
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{ \
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/* The nesting has unwound and we \
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can enable interrupts again. */ \
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portENABLE_INTERRUPTS(); \
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} \
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}
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/*-----------------------------------------------------------*/
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/* The yield macro maps directly to the vPortYield() function. */
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void vPortYield( void );
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#define portYIELD() vPortYield()
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/* portYIELD_FROM_ISR() does not directly call vTaskSwitchContext(), but instead
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sets a flag to say that a yield has been requested. The interrupt exit code
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then checks this flag, and calls vTaskSwitchContext() before restoring a task
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context, if the flag is not false. This is done to prevent multiple calls to
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vTaskSwitchContext() being made from a single interrupt, as a single interrupt
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can result in multiple peripherals being serviced. */
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extern volatile unsigned long ulTaskSwitchRequested;
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#define portYIELD_FROM_ISR( x ) if( x != pdFALSE ) ulTaskSwitchRequested = 1
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/*-----------------------------------------------------------*/
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/* Hardware specifics. */
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#define portBYTE_ALIGNMENT 4
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#define portSTACK_GROWTH ( -1 )
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#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
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#define portNOP() asm volatile ( "NOP" )
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/*-----------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. */
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#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
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#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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/*-----------------------------------------------------------*/
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/* The following structure is used by the FreeRTOS exception handler. It is
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filled with the MicroBlaze context as it was at the time the exception occurred.
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This is done as an aid to debugging exception occurrences. */
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typedef struct PORT_REGISTER_DUMP
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{
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/* The following structure members hold the values of the MicroBlaze
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registers at the time the exception was raised. */
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unsigned long ulR1_SP;
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unsigned long ulR2_small_data_area;
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unsigned long ulR3;
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unsigned long ulR4;
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unsigned long ulR5;
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unsigned long ulR6;
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unsigned long ulR7;
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unsigned long ulR8;
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unsigned long ulR9;
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unsigned long ulR10;
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unsigned long ulR11;
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unsigned long ulR12;
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unsigned long ulR13_read_write_small_data_area;
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unsigned long ulR14_return_address_from_interrupt;
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unsigned long ulR15_return_address_from_subroutine;
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unsigned long ulR16_return_address_from_trap;
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unsigned long ulR17_return_address_from_exceptions; /* The exception entry code will copy the BTR into R17 if the exception occurred in the delay slot of a branch instruction. */
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unsigned long ulR18;
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unsigned long ulR19;
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unsigned long ulR20;
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unsigned long ulR21;
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unsigned long ulR22;
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unsigned long ulR23;
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unsigned long ulR24;
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unsigned long ulR25;
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unsigned long ulR26;
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unsigned long ulR27;
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unsigned long ulR28;
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unsigned long ulR29;
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unsigned long ulR30;
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unsigned long ulR31;
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unsigned long ulPC;
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unsigned long ulESR;
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unsigned long ulMSR;
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unsigned long ulEAR;
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unsigned long ulFSR;
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unsigned long ulEDR;
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/* A human readable description of the exception cause. The strings used
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are the same as the #define constant names found in the
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microblaze_exceptions_i.h header file */
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signed char *pcExceptionCause;
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/* The human readable name of the task that was running at the time the
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exception occurred. This is the name that was given to the task when the
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task was created using the FreeRTOS xTaskCreate() API function. */
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signed char *pcCurrentTaskName;
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/* The handle of the task that was running a the time the exception
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occurred. */
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void * xCurrentTaskHandle;
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} xPortRegisterDump;
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/*
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* Installs pxHandler as the interrupt handler for the peripheral specified by
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* the ucInterruptID parameter.
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*
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* ucInterruptID:
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*
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* The ID of the peripheral that will have pxHandler assigned as its interrupt
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* handler. Peripheral IDs are defined in the xparameters.h header file, which
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* is itself part of the BSP project. For example, in the official demo
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* application for this port, xparameters.h defines the following IDs for the
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* four possible interrupt sources:
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*
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* XPAR_INTC_0_UARTLITE_1_VEC_ID - for the UARTlite peripheral.
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* XPAR_INTC_0_TMRCTR_0_VEC_ID - for the AXI Timer 0 peripheral.
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* XPAR_INTC_0_EMACLITE_0_VEC_ID - for the Ethernet lite peripheral.
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* XPAR_INTC_0_GPIO_1_VEC_ID - for the button inputs.
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*
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*
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* pxHandler:
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*
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* A pointer to the interrupt handler function itself. This must be a void
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* function that takes a (void *) parameter.
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*
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*
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* pvCallBackRef:
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*
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* The parameter passed into the handler function. In many cases this will not
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* be used and can be NULL. Some times it is used to pass in a reference to
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* the peripheral instance variable, so it can be accessed from inside the
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* handler function.
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*
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*
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* pdPASS is returned if the function executes successfully. Any other value
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* being returned indicates that the function did not execute correctly.
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*/
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portBASE_TYPE xPortInstallInterruptHandler( unsigned char ucInterruptID, XInterruptHandler pxHandler, void *pvCallBackRef );
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/*
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* Enables the interrupt, within the interrupt controller, for the peripheral
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* specified by the ucInterruptID parameter.
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*
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* ucInterruptID:
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*
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* The ID of the peripheral that will have its interrupt enabled in the
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* interrupt controller. Peripheral IDs are defined in the xparameters.h header
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* file, which is itself part of the BSP project. For example, in the official
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* demo application for this port, xparameters.h defines the following IDs for
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* the four possible interrupt sources:
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*
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* XPAR_INTC_0_UARTLITE_1_VEC_ID - for the UARTlite peripheral.
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* XPAR_INTC_0_TMRCTR_0_VEC_ID - for the AXI Timer 0 peripheral.
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* XPAR_INTC_0_EMACLITE_0_VEC_ID - for the Ethernet lite peripheral.
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* XPAR_INTC_0_GPIO_1_VEC_ID - for the button inputs.
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*
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*/
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void vPortEnableInterrupt( unsigned char ucInterruptID );
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/*
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* Disables the interrupt, within the interrupt controller, for the peripheral
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* specified by the ucInterruptID parameter.
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*
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* ucInterruptID:
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*
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* The ID of the peripheral that will have its interrupt disabled in the
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* interrupt controller. Peripheral IDs are defined in the xparameters.h header
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* file, which is itself part of the BSP project. For example, in the official
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* demo application for this port, xparameters.h defines the following IDs for
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* the four possible interrupt sources:
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*
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* XPAR_INTC_0_UARTLITE_1_VEC_ID - for the UARTlite peripheral.
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* XPAR_INTC_0_TMRCTR_0_VEC_ID - for the AXI Timer 0 peripheral.
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* XPAR_INTC_0_EMACLITE_0_VEC_ID - for the Ethernet lite peripheral.
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* XPAR_INTC_0_GPIO_1_VEC_ID - for the button inputs.
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*
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*/
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void vPortDisableInterrupt( unsigned char ucInterruptID );
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/*
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* This is an application defined callback function used to install the tick
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* interrupt handler. It is provided as an application callback because the
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* kernel will run on lots of different MicroBlaze and FPGA configurations - not
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* all of which will have the same timer peripherals defined or available. This
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* example uses the AXI Timer 0. If that is available on your hardware platform
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* then this example callback implementation should not require modification.
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* The name of the interrupt handler that should be installed is vPortTickISR(),
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* which the function below declares as an extern.
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*/
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void vApplicationSetupTimerInterrupt( void );
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/*
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* This is an application defined callback function used to clear whichever
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* interrupt was installed by the the vApplicationSetupTimerInterrupt() callback
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* function - in this case the interrupt generated by the AXI timer. It is
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* provided as an application callback because the kernel will run on lots of
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* different MicroBlaze and FPGA configurations - not all of which will have the
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* same timer peripherals defined or available. This example uses the AXI Timer 0.
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* If that is available on your hardware platform then this example callback
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* implementation should not require modification provided the example definition
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* of vApplicationSetupTimerInterrupt() is also not modified.
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*/
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void vApplicationClearTimerInterrupt( void );
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/*
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* vPortExceptionsInstallHandlers() is only available when the MicroBlaze
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* is configured to include exception functionality, and
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* configINSTALL_EXCEPTION_HANDLERS is set to 1 in FreeRTOSConfig.h.
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*
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* vPortExceptionsInstallHandlers() installs the FreeRTOS exception handler
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* for every possible exception cause.
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*
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* vPortExceptionsInstallHandlers() can be called explicitly from application
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* code. After that is done, the default FreeRTOS exception handler that will
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* have been installed can be replaced for any specific exception cause by using
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* the standard Xilinx library function microblaze_register_exception_handler().
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*
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* If vPortExceptionsInstallHandlers() is not called explicitly by the
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* application, it will be called automatically by the kernel the first time
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* xPortInstallInterruptHandler() is called. At that time, any exception
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* handlers that may have already been installed will be replaced.
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*
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* See the description of vApplicationExceptionRegisterDump() for information
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* on the processing performed by the FreeRTOS exception handler.
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*/
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void vPortExceptionsInstallHandlers( void );
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/*
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* The FreeRTOS exception handler fills an xPortRegisterDump structure (defined
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* in portmacro.h) with the MicroBlaze context, as it was at the time the
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* exception occurred. The exception handler then calls
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* vApplicationExceptionRegisterDump(), passing in the completed
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* xPortRegisterDump structure as its parameter.
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*
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* The FreeRTOS kernel provides its own implementation of
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* vApplicationExceptionRegisterDump(), but the kernel provided implementation
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* is declared as being 'weak'. The weak definition allows the application
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* writer to provide their own implementation, should they wish to use the
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* register dump information. For example, an implementation could be provided
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* that wrote the register dump data to a display, or a UART port.
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*/
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void vApplicationExceptionRegisterDump( xPortRegisterDump *xRegisterDump );
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#ifdef __cplusplus
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}
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#endif
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#endif /* PORTMACRO_H */
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