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Add FreeRTOS-Plus directory.

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Richard Barry 2012-08-11 21:34:11 +00:00
parent 7bd5f21ad5
commit f508a5f653
6798 changed files with 134949 additions and 19 deletions
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FreeRTOS/Demo/CORTEX_M0_LPC1114_LPCXpresso/RTOSDemo/.cproject Normal file
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<projectStorage>&lt;?xml version="1.0" encoding="UTF-8"?&gt;&#13;
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&lt;Properties property_0="" property_1="" property_2="" property_3="NXP" property_4="LPC1114/301" property_count="5" version="1"/&gt;&#13;
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&lt;prog_flash blocksz="0x1000" location="0x0" maxprgbuff="0x400" progwithcode="TRUE" size="0x8000"/&gt;&#13;
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&lt;peripheralInstance derived_from="CM0_DCR" determined="infoFile" id="DCR" location="0xe000edf0"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_GPIO" determined="infoFile" id="GPIO0" location="0x50000000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_GPIO" determined="infoFile" id="GPIO1" location="0x50010000"/&gt;&#13;
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&lt;peripheralInstance derived_from="LPC11_GPIO" determined="infoFile" id="GPIO3" location="0x50030000"/&gt;&#13;
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&lt;peripheralInstance derived_from="LPC11_13_I2C" determined="infoFile" id="I2C0" location="0x40000000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_SSP" determined="infoFile" id="SSP0" location="0x40040000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_SSP" determined="infoFile" id="SSP1" location="0x40058000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_TIMER16" determined="infoFile" id="TMR160" location="0x4000c000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_TIMER16" determined="infoFile" id="TMR161" location="0x40010000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_TIMER32" determined="infoFile" id="TIMER0" location="0x40014000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_TIMER32" determined="infoFile" id="TIMER1" location="0x40018000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_WDT" determined="infoFile" id="WDT" location="0x40004000"/&gt;&#13;
&lt;peripheralInstance derived_from="LPC11_13_ADC" determined="infoFile" id="ADC" location="0x4001c000"/&gt;&#13;
&lt;/chip&gt;&#13;
&lt;processor&gt;&lt;name gcc_name="cortex-m0"&gt;Cortex-M0&lt;/name&gt;&#13;
&lt;family&gt;Cortex-M&lt;/family&gt;&#13;
&lt;/processor&gt;&#13;
&lt;link href="nxp_lpc11_13_peripheral.xme" show="embed" type="simple"/&gt;&#13;
&lt;/info&gt;&#13;
&lt;/infoList&gt;&#13;
&lt;/TargetConfig&gt;</projectStorage>
</storageModule>
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83
FreeRTOS/Demo/CORTEX_M0_LPC1114_LPCXpresso/RTOSDemo/.project Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>RTOSDemo</name>
<comment></comment>
<projects>
<project>CMSISv2p00_LPC11xx</project>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
<triggers>clean,full,incremental,</triggers>
<arguments>
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<key>?name?</key>
<value></value>
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<value>make</value>
</dictionary>
<dictionary>
<key>org.eclipse.cdt.make.core.buildLocation</key>
<value>${workspace_loc:/RTOSDemo/Debug}</value>
</dictionary>
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<triggers>full,incremental,</triggers>
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51
FreeRTOS/Demo/CORTEX_M0_LPC1114_LPCXpresso/RTOSDemo/CreateProjectDirectoryStructure.bat Normal file
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REM This file should be executed from the command line prior to the first
REM build. It will be necessary to refresh the Eclipse project once the
REM .bat file has been executed (normally just press F5 to refresh).
REM Copies all the required files from their location within the standard
REM FreeRTOS directory structure to under the Eclipse project directory.
REM This permits the Eclipse project to be used in 'managed' mode and without
REM having to setup any linked resources.
REM Have the files already been copied?
IF EXIST Source\FreeRTOS_Source Goto END
REM Create the required directory structure.
MD Source\FreeRTOS_Source
MD Source\FreeRTOS_Source\include
MD Source\FreeRTOS_Source\portable
MD Source\FreeRTOS_Source\portable\GCC
MD Source\FreeRTOS_Source\portable\GCC\ARM_CM0
MD Source\FreeRTOS_Source\portable\MemMang
MD Source\Common_Demo_Tasks
MD Source\Common_Demo_Tasks\include
REM Copy the core kernel files.
copy ..\..\..\Source\tasks.c Source\FreeRTOS_Source
copy ..\..\..\Source\queue.c Source\FreeRTOS_Source
copy ..\..\..\Source\list.c Source\FreeRTOS_Source
copy ..\..\..\Source\timers.c Source\FreeRTOS_Source
REM Copy the common header files
copy ..\..\..\Source\include\*.* Source\FreeRTOS_Source\include
REM Copy the portable layer files
copy ..\..\..\Source\portable\GCC\ARM_CM0\*.* Source\FreeRTOS_Source\portable\GCC\ARM_CM0
REM Copy the basic memory allocation files
copy ..\..\..\Source\portable\MemMang\heap_1.c Source\FreeRTOS_Source\portable\MemMang
REM Copy the files that define the common demo tasks.
copy ..\..\Common\minimal\blocktim.c Source\Common_Demo_Tasks
copy ..\..\Common\minimal\recmutex.c Source\Common_Demo_Tasks
copy ..\..\Common\minimal\countsem.c Source\Common_Demo_Tasks
copy ..\..\Common\minimal\IntQueue.c Source\Common_Demo_Tasks
REM Copy the common demo file headers.
copy ..\..\Common\include\blocktim.h Source\Common_Demo_Tasks\include
copy ..\..\Common\include\recmutex.h Source\Common_Demo_Tasks\include
copy ..\..\Common\include\countsem.h Source\Common_Demo_Tasks\include
copy ..\..\Common\include\IntQueue.h Source\Common_Demo_Tasks\include
: END

146
FreeRTOS/Demo/CORTEX_M0_LPC1114_LPCXpresso/RTOSDemo/Source/FreeRTOSConfig.h Normal file
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@ -0,0 +1,146 @@
/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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 FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
/*
* The following #error directive is to remind users that a batch file must be
* executed prior to this project being built. The batch file *cannot* be
* executed from within the IDE! Once it has been executed, re-open or refresh
* the Eclipse project and remove the #error line below.
*/
#error Ensure CreateProjectDirectoryStructure.bat has been executed before building. See comment immediately above.
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
*
* See http://www.freertos.org/a00110.html.
*----------------------------------------------------------*/
#include <stdint.h>
extern uint32_t SystemCoreClock;
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 0
#define configUSE_TICK_HOOK 1
#define configCPU_CLOCK_HZ ( SystemCoreClock )
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 5 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 70 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 6500 ) )
#define configMAX_TASK_NAME_LEN ( 5 )
#define configUSE_TRACE_FACILITY 1
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
#define configUSE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 8
#define configCHECK_FOR_STACK_OVERFLOW 2
#define configUSE_RECURSIVE_MUTEXES 1
#define configUSE_MALLOC_FAILED_HOOK 1
#define configUSE_APPLICATION_TASK_TAG 0
#define configUSE_COUNTING_SEMAPHORES 1
#define configGENERATE_RUN_TIME_STATS 0
/* Co-routine definitions. */
#define configUSE_CO_ROUTINES 0
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
/* Software timer definitions. */
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY ( 2 )
#define configTIMER_QUEUE_LENGTH 2
#define configTIMER_TASK_STACK_DEPTH ( 80 )
/* Set the following definitions to 1 to include the API function, or zero
to exclude the API function. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 1
#define INCLUDE_vTaskCleanUpResources 1
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
/* Normal assert() semantics without relying on the provision of an assert.h
header file. */
#define configASSERT( x ) if( ( x ) == 0 ) { taskDISABLE_INTERRUPTS(); for( ;; ); }
/* Definitions that map the FreeRTOS port interrupt handlers to their CMSIS
standard names - or at least those used in the unmodified vector table. */
#define vPortSVCHandler SVCall_Handler
#define xPortPendSVHandler PendSV_Handler
#define xPortSysTickHandler SysTick_Handler
#endif /* FREERTOS_CONFIG_H */

138
FreeRTOS/Demo/CORTEX_M0_LPC1114_LPCXpresso/RTOSDemo/Source/IntQueueTimer.c Normal file
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@ -0,0 +1,138 @@
/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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.
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Demo includes. */
#include "IntQueueTimer.h"
#include "IntQueue.h"
/* Hardware includes. */
#include "lpc11xx.h"
/* The two timer frequencies. */
#define tmrTIMER_2_FREQUENCY ( 2000UL )
#define tmrTIMER_3_FREQUENCY ( 2001UL )
/* The priorities for the two timers. Note that a priority of 0 is the highest
possible on Cortex-M devices. */
#define tmrMAX_PRIORITY ( 0UL )
#define trmSECOND_HIGHEST_PRIORITY ( tmrMAX_PRIORITY + 1 )
void vInitialiseTimerForIntQueueTest( void )
{
/* Enable AHB clock for GPIO and 16-bit timers. */
LPC_SYSCON->SYSAHBCLKCTRL |= ( 7 << 6 );
/* Interrupt and reset on MR0 match. */
LPC_TMR16B0->MCR = 0x03;
LPC_TMR16B1->MCR = 0x03;
/* Configure the frequency of the interrupt generated by MR0 matches. */
LPC_TMR16B0->MR0 = SystemCoreClock / tmrTIMER_2_FREQUENCY;
LPC_TMR16B1->MR0 = SystemCoreClock / tmrTIMER_3_FREQUENCY;
/* Don't generate interrupts until the scheduler has been started.
Interrupts will be automatically enabled when the first task starts
running. */
taskDISABLE_INTERRUPTS();
/* Set the timer interrupts to be above the kernel. The interrupts are
assigned different priorities so they nest with each other. */
NVIC_SetPriority( TIMER_16_0_IRQn, trmSECOND_HIGHEST_PRIORITY );
NVIC_SetPriority( TIMER_16_1_IRQn, tmrMAX_PRIORITY );
/* Enable the timer interrupts. */
NVIC_EnableIRQ( TIMER_16_0_IRQn );
NVIC_EnableIRQ( TIMER_16_1_IRQn );
/* Start the timers. */
LPC_TMR16B0->TCR = 0x01;
LPC_TMR16B1->TCR = 0x01;
}
/*-----------------------------------------------------------*/
void TIMER16_0_IRQHandler(void)
{
/* Clear the interrupt. */
LPC_TMR16B0->IR = LPC_TMR16B0->IR;
/* Call the standard demo int queue timer function for this first timer. */
portEND_SWITCHING_ISR( xFirstTimerHandler() );
}
/*-----------------------------------------------------------*/
void TIMER16_1_IRQHandler(void)
{
/* Clear the interrupt. */
LPC_TMR16B1->IR = LPC_TMR16B1->IR;
/* Call the standard demo int queue timer function for this second timer. */
portEND_SWITCHING_ISR( xSecondTimerHandler() );
}
/*-----------------------------------------------------------*/

75
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/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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 INT_QUEUE_TIMER_H
#define INT_QUEUE_TIMER_H
void vInitialiseTimerForIntQueueTest( void );
portBASE_TYPE xTimer0Handler( void );
portBASE_TYPE xTimer1Handler( void );
#endif

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/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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.
*/
void vRegTest1Task( void ) __attribute__((naked));
void vRegTest2Task( void ) __attribute__((naked));
void vRegTest1Task( void )
{
__asm volatile
(
".extern ulRegTest1LoopCounter \n"
" \n"
" /* Fill the core registers with known values. */ \n"
" movs r1, #101 \n"
" movs r2, #102 \n"
" movs r3, #103 \n"
" movs r4, #104 \n"
" movs r5, #105 \n"
" movs r6, #106 \n"
" movs r7, #107 \n"
" movs r0, #108 \n"
" mov r8, r0 \n"
" movs r0, #109 \n"
" mov r9, r0 \n"
" movs r0, #110 \n"
" mov r10, r0 \n"
" movs r0, #111 \n"
" mov r11, r0 \n"
" movs r0, #112 \n"
" mov r12, r0 \n"
" movs r0, #100 \n"
" \n"
"reg1_loop: \n"
" \n"
" cmp r0, #100 \n"
" bne reg1_error_loop \n"
" cmp r1, #101 \n"
" bne reg1_error_loop \n"
" cmp r2, #102 \n"
" bne reg1_error_loop \n"
" cmp r3, #103 \n"
" bne reg1_error_loop \n"
" cmp r4, #104 \n"
" bne reg1_error_loop \n"
" cmp r5, #105 \n"
" bne reg1_error_loop \n"
" cmp r6, #106 \n"
" bne reg1_error_loop \n"
" cmp r7, #107 \n"
" bne reg1_error_loop \n"
" movs r0, #108 \n"
" cmp r8, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #109 \n"
" cmp r9, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #110 \n"
" cmp r10, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #111 \n"
" cmp r11, r0 \n"
" bne reg1_error_loop \n"
" movs r0, #112 \n"
" cmp r12, r0 \n"
" bne reg1_error_loop \n"
" \n"
" /* Everything passed, increment the loop counter. */ \n"
" push { r1 } \n"
" ldr r0, =ulRegTest1LoopCounter \n"
" ldr r1, [r0] \n"
" add r1, r1, #1 \n"
" str r1, [r0] \n"
" pop { r1 } \n"
" \n"
" /* Start again. */ \n"
" movs r0, #100 \n"
" b reg1_loop \n"
" \n"
"reg1_error_loop: \n"
" /* If this line is hit then there was an error in a core register value. \n"
" The loop ensures the loop counter stops incrementing. */ \n"
" b reg1_error_loop \n"
" nop \n"
);
}
/*-----------------------------------------------------------*/
void vRegTest2Task( void )
{
__asm volatile
(
".extern ulRegTest2LoopCounter \n"
" \n"
" /* Fill the core registers with known values. */ \n"
" movs r1, #1 \n"
" movs r2, #2 \n"
" movs r3, #3 \n"
" movs r4, #4 \n"
" movs r5, #5 \n"
" movs r6, #6 \n"
" movs r7, #7 \n"
" movs r0, #8 \n"
" movs r8, r0 \n"
" movs r0, #9 \n"
" mov r9, r0 \n"
" movs r0, #10 \n"
" mov r10, r0 \n"
" movs r0, #11 \n"
" mov r11, r0 \n"
" movs r0, #12 \n"
" mov r12, r0 \n"
" movs r0, #10 \n"
" \n"
"reg2_loop: \n"
" \n"
" cmp r0, #10 \n"
" bne reg2_error_loop \n"
" cmp r1, #1 \n"
" bne reg2_error_loop \n"
" cmp r2, #2 \n"
" bne reg2_error_loop \n"
" cmp r3, #3 \n"
" bne reg2_error_loop \n"
" cmp r4, #4 \n"
" bne reg2_error_loop \n"
" cmp r5, #5 \n"
" bne reg2_error_loop \n"
" cmp r6, #6 \n"
" bne reg2_error_loop \n"
" cmp r7, #7 \n"
" bne reg2_error_loop \n"
" movs r0, #8 \n"
" cmp r8, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #9 \n"
" cmp r9, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #10 \n"
" cmp r10, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #11 \n"
" cmp r11, r0 \n"
" bne reg2_error_loop \n"
" movs r0, #12 \n"
" cmp r12, r0 \n"
" bne reg2_error_loop \n"
" \n"
" /* Everything passed, increment the loop counter. */ \n"
" push { r1 } \n"
" ldr r0, =ulRegTest2LoopCounter \n"
" ldr r1, [r0] \n"
" add r1, r1, #1 \n"
" str r1, [r0] \n"
" pop { r1 } \n"
" \n"
" /* Start again. */ \n"
" movs r0, #10 \n"
" b reg2_loop \n"
" \n"
"reg2_error_loop: \n"
" /* If this line is hit then there was an error in a core register value. \n"
" The loop ensures the loop counter stops incrementing. */ \n"
" b reg2_error_loop \n"
" nop \n"
);
}
/*-----------------------------------------------------------*/

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//*****************************************************************************
// +--+
// | ++----+
// +-++ |
// | |
// +-+--+ |
// | +--+--+
// +----+ Copyright (c) 2009-10 Code Red Technologies Ltd.
//
// Microcontroller Startup code for use with Red Suite
//
// Version : 101130
//
// Software License Agreement
//
// The software is owned by Code Red Technologies and/or its suppliers, and is
// protected under applicable copyright laws. All rights are reserved. Any
// use in violation of the foregoing restrictions may subject the user to criminal
// sanctions under applicable laws, as well as to civil liability for the breach
// of the terms and conditions of this license.
//
// THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED
// OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE.
// USE OF THIS SOFTWARE FOR COMMERCIAL DEVELOPMENT AND/OR EDUCATION IS SUBJECT
// TO A CURRENT END USER LICENSE AGREEMENT (COMMERCIAL OR EDUCATIONAL) WITH
// CODE RED TECHNOLOGIES LTD.
//
//*****************************************************************************
#if defined (__cplusplus)
#ifdef __REDLIB__
#error Redlib does not support C++
#else
//*****************************************************************************
//
// The entry point for the C++ library startup
//
//*****************************************************************************
extern "C" {
extern void __libc_init_array(void);
}
#endif
#endif
#define WEAK __attribute__ ((weak))
#define ALIAS(f) __attribute__ ((weak, alias (#f)))
// Code Red - if CMSIS is being used, then SystemInit() routine
// will be called by startup code rather than in application's main()
#if defined (__USE_CMSIS)
#include "system_LPC11xx.h"
#endif
//*****************************************************************************
#if defined (__cplusplus)
extern "C" {
#endif
//*****************************************************************************
//
// Forward declaration of the default handlers. These are aliased.
// When the application defines a handler (with the same name), this will
// automatically take precedence over these weak definitions
//
//*****************************************************************************
void ResetISR(void);
WEAK void NMI_Handler(void);
WEAK void HardFault_Handler(void);
WEAK void SVCall_Handler(void);
WEAK void PendSV_Handler(void);
WEAK void SysTick_Handler(void);
WEAK void IntDefaultHandler(void);
//*****************************************************************************
//
// Forward declaration of the specific IRQ handlers. These are aliased
// to the IntDefaultHandler, which is a 'forever' loop. When the application
// defines a handler (with the same name), this will automatically take
// precedence over these weak definitions
//
//*****************************************************************************
void CAN_IRQHandler (void) ALIAS(IntDefaultHandler);
void SSP1_IRQHandler (void) ALIAS(IntDefaultHandler);
void I2C_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER16_0_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER16_1_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER32_0_IRQHandler (void) ALIAS(IntDefaultHandler);
void TIMER32_1_IRQHandler (void) ALIAS(IntDefaultHandler);
void SSP0_IRQHandler (void) ALIAS(IntDefaultHandler);
void UART_IRQHandler (void) ALIAS(IntDefaultHandler);
void ADC_IRQHandler (void) ALIAS(IntDefaultHandler);
void WDT_IRQHandler (void) ALIAS(IntDefaultHandler);
void BOD_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT3_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT2_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT1_IRQHandler (void) ALIAS(IntDefaultHandler);
void PIOINT0_IRQHandler (void) ALIAS(IntDefaultHandler);
void WAKEUP_IRQHandler (void) ALIAS(IntDefaultHandler);
//*****************************************************************************
//
// The entry point for the application.
// __main() is the entry point for redlib based applications
// main() is the entry point for newlib based applications
//
//*****************************************************************************
//
// The entry point for the application.
// __main() is the entry point for Redlib based applications
// main() is the entry point for Newlib based applications
//
//*****************************************************************************
#if defined (__REDLIB__)
extern void __main(void);
#endif
extern int main(void);
//*****************************************************************************
//
// External declaration for the pointer to the stack top from the Linker Script
//
//*****************************************************************************
extern void _vStackTop(void);
//*****************************************************************************
#if defined (__cplusplus)
} // extern "C"
#endif
//*****************************************************************************
//
// The vector table. Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000.
//
//*****************************************************************************
extern void (* const g_pfnVectors[])(void);
__attribute__ ((section(".isr_vector")))
void (* const g_pfnVectors[])(void) = {
&_vStackTop, // The initial stack pointer
ResetISR, // The reset handler
NMI_Handler, // The NMI handler
HardFault_Handler, // The hard fault handler
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
0, // Reserved
SVCall_Handler, // SVCall handler
0, // Reserved
0, // Reserved
PendSV_Handler, // The PendSV handler
SysTick_Handler, // The SysTick handler
// Wakeup sources for the I/O pins:
// PIO0 (0:11)
// PIO1 (0)
WAKEUP_IRQHandler, // PIO0_0 Wakeup
WAKEUP_IRQHandler, // PIO0_1 Wakeup
WAKEUP_IRQHandler, // PIO0_2 Wakeup
WAKEUP_IRQHandler, // PIO0_3 Wakeup
WAKEUP_IRQHandler, // PIO0_4 Wakeup
WAKEUP_IRQHandler, // PIO0_5 Wakeup
WAKEUP_IRQHandler, // PIO0_6 Wakeup
WAKEUP_IRQHandler, // PIO0_7 Wakeup
WAKEUP_IRQHandler, // PIO0_8 Wakeup
WAKEUP_IRQHandler, // PIO0_9 Wakeup
WAKEUP_IRQHandler, // PIO0_10 Wakeup
WAKEUP_IRQHandler, // PIO0_11 Wakeup
WAKEUP_IRQHandler, // PIO1_0 Wakeup
CAN_IRQHandler, // C_CAN Interrupt
SSP1_IRQHandler, // SPI/SSP1 Interrupt
I2C_IRQHandler, // I2C0
TIMER16_0_IRQHandler, // CT16B0 (16-bit Timer 0)
TIMER16_1_IRQHandler, // CT16B1 (16-bit Timer 1)
TIMER32_0_IRQHandler, // CT32B0 (32-bit Timer 0)
TIMER32_1_IRQHandler, // CT32B1 (32-bit Timer 1)
SSP0_IRQHandler, // SPI/SSP0 Interrupt
UART_IRQHandler, // UART0
0, // Reserved
0, // Reserved
ADC_IRQHandler, // ADC (A/D Converter)
WDT_IRQHandler, // WDT (Watchdog Timer)
BOD_IRQHandler, // BOD (Brownout Detect)
0, // Reserved
PIOINT3_IRQHandler, // PIO INT3
PIOINT2_IRQHandler, // PIO INT2
PIOINT1_IRQHandler, // PIO INT1
PIOINT0_IRQHandler, // PIO INT0
};
//*****************************************************************************
// Functions to carry out the initialization of RW and BSS data sections. These
// are written as separate functions rather than being inlined within the
// ResetISR() function in order to cope with MCUs with multiple banks of
// memory.
//*****************************************************************************
__attribute__ ((section(".after_vectors")))
void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
unsigned int *pulDest = (unsigned int*) start;
unsigned int *pulSrc = (unsigned int*) romstart;
unsigned int loop;
for (loop = 0; loop < len; loop = loop + 4)
*pulDest++ = *pulSrc++;
}
__attribute__ ((section(".after_vectors")))
void bss_init(unsigned int start, unsigned int len) {
unsigned int *pulDest = (unsigned int*) start;
unsigned int loop;
for (loop = 0; loop < len; loop = loop + 4)
*pulDest++ = 0;
}
#ifndef USE_OLD_STYLE_DATA_BSS_INIT
//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the location of various points in the "Global Section Table". This table is
// created by the linker via the Code Red managed linker script mechanism. It
// contains the load address, execution address and length of each RW data
// section and the execution and length of each BSS (zero initialized) section.
//*****************************************************************************
extern unsigned int __data_section_table;
extern unsigned int __data_section_table_end;
extern unsigned int __bss_section_table;
extern unsigned int __bss_section_table_end;
#else
//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the load address, execution address and length of the RW data section and
// the execution and length of the BSS (zero initialized) section.
// Note that these symbols are not normally used by the managed linker script
// mechanism in Red Suite/LPCXpresso 3.6 (Windows) and LPCXpresso 3.8 (Linux).
// They are provide here simply so this startup code can be used with earlier
// versions of Red Suite which do not support the more advanced managed linker
// script mechanism introduced in the above version. To enable their use,
// define "USE_OLD_STYLE_DATA_BSS_INIT".
//*****************************************************************************
extern unsigned int _etext;
extern unsigned int _data;
extern unsigned int _edata;
extern unsigned int _bss;
extern unsigned int _ebss;
#endif
//*****************************************************************************
// Reset entry point for your code.
// Sets up a simple runtime environment and initializes the C/C++
// library.
//*****************************************************************************
__attribute__ ((section(".after_vectors")))
void
ResetISR(void) {
#ifndef USE_OLD_STYLE_DATA_BSS_INIT
//
// Copy the data sections from flash to SRAM.
//
unsigned int LoadAddr, ExeAddr, SectionLen;
unsigned int *SectionTableAddr;
// Load base address of Global Section Table
SectionTableAddr = &__data_section_table;
// Copy the data sections from flash to SRAM.
while (SectionTableAddr < &__data_section_table_end) {
LoadAddr = *SectionTableAddr++;
ExeAddr = *SectionTableAddr++;
SectionLen = *SectionTableAddr++;
data_init(LoadAddr, ExeAddr, SectionLen);
}
// At this point, SectionTableAddr = &__bss_section_table;
// Zero fill the bss segment
while (SectionTableAddr < &__bss_section_table_end) {
ExeAddr = *SectionTableAddr++;
SectionLen = *SectionTableAddr++;
bss_init(ExeAddr, SectionLen);
}
#else
// Use Old Style Data and BSS section initialization.
// This will only initialize a single RAM bank.
unsigned int * LoadAddr, *ExeAddr, *EndAddr, SectionLen;
// Copy the data segment from flash to SRAM.
LoadAddr = &_etext;
ExeAddr = &_data;
EndAddr = &_edata;
SectionLen = (void*)EndAddr - (void*)ExeAddr;
data_init((unsigned int)LoadAddr, (unsigned int)ExeAddr, SectionLen);
// Zero fill the bss segment
ExeAddr = &_bss;
EndAddr = &_ebss;
SectionLen = (void*)EndAddr - (void*)ExeAddr;
bss_init ((unsigned int)ExeAddr, SectionLen);
#endif
#ifdef __USE_CMSIS
SystemInit();
#endif
#if defined (__cplusplus)
//
// Call C++ library initialisation
//
__libc_init_array();
#endif
#if defined (__REDLIB__)
// Call the Redlib library, which in turn calls main()
__main() ;
#else
main();
#endif
//
// main() shouldn't return, but if it does, we'll just enter an infinite loop
//
while (1) {
;
}
}
//*****************************************************************************
// Default exception handlers. Override the ones here by defining your own
// handler routines in your application code.
//*****************************************************************************
__attribute__ ((section(".after_vectors")))
void NMI_Handler(void)
{
while(1)
{
}
}
void pop_registers_from_fault_stack(unsigned int * hardfault_args)
{
volatile unsigned int stacked_r0;
volatile unsigned int stacked_r1;
volatile unsigned int stacked_r2;
volatile unsigned int stacked_r3;
volatile unsigned int stacked_r12;
volatile unsigned int stacked_lr;
volatile unsigned int stacked_pc;
volatile unsigned int stacked_psr;
stacked_r0 = ((unsigned long) hardfault_args[0]);
stacked_r1 = ((unsigned long) hardfault_args[1]);
stacked_r2 = ((unsigned long) hardfault_args[2]);
stacked_r3 = ((unsigned long) hardfault_args[3]);
stacked_r12 = ((unsigned long) hardfault_args[4]);
stacked_lr = ((unsigned long) hardfault_args[5]);
stacked_pc = ((unsigned long) hardfault_args[6]);
stacked_psr = ((unsigned long) hardfault_args[7]);
/* Inspect stacked_pc to locate the offending instruction. */
for( ;; )
{
__asm volatile ( "NOP" );
}
}
__attribute__ ((section(".after_vectors")))
void HardFault_Handler(void)
{
__asm volatile
(
" mov r0, lr \n"
" mov r1, #4 \n"
" and r1, r0 \n"
" cmp r1, #0 \n"
" beq is_equal \n"
" mrs r0, psp \n"
" b is_done \n"
"is_equal: \n"
" mrs r0, msp \n"
"is_done: \n"
" ldr r1, [r0, #24] \n"
" ldr r2, handler2_address_const \n"
" bx r2 \n"
" handler2_address_const: .word pop_registers_from_fault_stack \n"
);
while(1)
{
}
}
__attribute__ ((section(".after_vectors")))
void SVCall_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section(".after_vectors")))
void PendSV_Handler(void)
{
while(1)
{
}
}
__attribute__ ((section(".after_vectors")))
void SysTick_Handler(void)
{
while(1)
{
}
}
//*****************************************************************************
//
// Processor ends up here if an unexpected interrupt occurs or a specific
// handler is not present in the application code.
//
//*****************************************************************************
__attribute__ ((section(".after_vectors")))
void IntDefaultHandler(void)
{
while(1)
{
}
}

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/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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.
*/
/******************************************************************************
* NOTE 1: This project provides two demo applications. A simple blinky style
* project, and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting in main.c is used to select
* between the two. See the notes on using mainCREATE_SIMPLE_BLINKY_DEMO_ONLY
* in main.c. This file implements the simply blinky style version.
*
* NOTE 2: This file only contains the source code that is specific to the
* full demo. Generic functions, such FreeRTOS hook functions, and functions
* required to configure the hardware, are defined in main.c.
******************************************************************************
*
* main_blinky() creates one queue, and two tasks. It then starts the
* scheduler.
*
* The Queue Send Task:
* The queue send task is implemented by the prvQueueSendTask() function in
* this file. prvQueueSendTask() sits in a loop that causes it to repeatedly
* block for 200 milliseconds, before sending the value 100 to the queue that
* was created within main_blinky(). Once the value is sent, the task loops
* back around to block for another 200 milliseconds.
*
* The Queue Receive Task:
* The queue receive task is implemented by the prvQueueReceiveTask() function
* in this file. prvQueueReceiveTask() sits in a loop where it repeatedly
* blocks on attempts to read data from the queue that was created within
* main_blinky(). When data is received, the task checks the value of the
* data, and if the value equals the expected 100, toggles the LED. The 'block
* time' parameter passed to the queue receive function specifies that the
* task should be held in the Blocked state indefinitely to wait for data to
* be available on the queue. The queue receive task will only leave the
* Blocked state when the queue send task writes to the queue. As the queue
* send task writes to the queue every 200 milliseconds, the queue receive
* task leaves the Blocked state every 200 milliseconds, and therefore toggles
* the LED every 200 milliseconds.
*/
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
/* Hardware specific includes. */
#include "lpc11xx.h"
/* Priorities at which the tasks are created. */
#define mainQUEUE_RECEIVE_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainQUEUE_SEND_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
/* The rate at which data is sent to the queue. The 200ms value is converted
to ticks using the portTICK_RATE_MS constant. */
#define mainQUEUE_SEND_FREQUENCY_MS ( 200 / portTICK_RATE_MS )
/* The number of items the queue can hold. This is 1 as the receive task
will remove items as they are added, meaning the send task should always find
the queue empty. */
#define mainQUEUE_LENGTH ( 1 )
/* Values passed to the two tasks just to check the task parameter
functionality. */
#define mainQUEUE_SEND_PARAMETER ( 0x1111UL )
#define mainQUEUE_RECEIVE_PARAMETER ( 0x22UL )
/*-----------------------------------------------------------*/
/*
* The tasks as described in the comments at the top of this file.
*/
static void prvQueueReceiveTask( void *pvParameters );
static void prvQueueSendTask( void *pvParameters );
/*
* Called by main() to create the simply blinky style application if
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
*/
void main_blinky( void );
/*
* The hardware only has a single LED. Simply toggle it.
*/
extern void vMainToggleLED( void );
/*-----------------------------------------------------------*/
/* The queue used by both tasks. */
static xQueueHandle xQueue = NULL;
/*-----------------------------------------------------------*/
void main_blinky( void )
{
/* Create the queue. */
xQueue = xQueueCreate( mainQUEUE_LENGTH, sizeof( unsigned long ) );
if( xQueue != NULL )
{
/* Start the two tasks as described in the comments at the top of this
file. */
xTaskCreate( prvQueueReceiveTask, /* The function that implements the task. */
( signed char * ) "Rx", /* The text name assigned to the task - for debug only as it is not used by the kernel. */
configMINIMAL_STACK_SIZE, /* The size of the stack to allocate to the task. */
( void * ) mainQUEUE_RECEIVE_PARAMETER, /* The parameter passed to the task - just to check the functionality. */
mainQUEUE_RECEIVE_TASK_PRIORITY, /* The priority assigned to the task. */
NULL ); /* The task handle is not required, so NULL is passed. */
xTaskCreate( prvQueueSendTask, ( signed char * ) "TX", configMINIMAL_STACK_SIZE, ( void * ) mainQUEUE_SEND_PARAMETER, mainQUEUE_SEND_TASK_PRIORITY, NULL );
/* Start the tasks and timer running. */
vTaskStartScheduler();
}
/* If all is well, the scheduler will now be running, and the following
line will never be reached. If the following line does execute, then
there was insufficient FreeRTOS heap memory available for the idle and/or
timer tasks to be created. See the memory management section on the
FreeRTOS web site for more details. */
for( ;; );
}
/*-----------------------------------------------------------*/
static void prvQueueSendTask( void *pvParameters )
{
portTickType xNextWakeTime;
const unsigned long ulValueToSend = 100UL;
/* Check the task parameter is as expected. */
configASSERT( ( ( unsigned long ) pvParameters ) == mainQUEUE_SEND_PARAMETER );
/* Initialise xNextWakeTime - this only needs to be done once. */
xNextWakeTime = xTaskGetTickCount();
for( ;; )
{
/* Place this task in the blocked state until it is time to run again.
The block time is specified in ticks, the constant used converts ticks
to ms. While in the Blocked state this task will not consume any CPU
time. */
vTaskDelayUntil( &xNextWakeTime, mainQUEUE_SEND_FREQUENCY_MS );
/* Send to the queue - causing the queue receive task to unblock and
toggle the LED. 0 is used as the block time so the sending operation
will not block - it shouldn't need to block as the queue should always
be empty at this point in the code. */
xQueueSend( xQueue, &ulValueToSend, 0U );
}
}
/*-----------------------------------------------------------*/
static void prvQueueReceiveTask( void *pvParameters )
{
unsigned long ulReceivedValue;
/* Check the task parameter is as expected. */
configASSERT( ( ( unsigned long ) pvParameters ) == mainQUEUE_RECEIVE_PARAMETER );
for( ;; )
{
/* Wait until something arrives in the queue - this task will block
indefinitely provided INCLUDE_vTaskSuspend is set to 1 in
FreeRTOSConfig.h. */
xQueueReceive( xQueue, &ulReceivedValue, portMAX_DELAY );
/* To get here something must have been received from the queue, but
is it the expected value? If it is, toggle the LED. */
if( ulReceivedValue == 100UL )
{
vMainToggleLED();
ulReceivedValue = 0U;
}
}
}
/*-----------------------------------------------------------*/

307
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@ -0,0 +1,307 @@
/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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.
*/
/******************************************************************************
* NOTE 1: This project provides two demo applications. A simple blinky style
* project, and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting in main.c is used to select
* between the two. See the notes on using mainCREATE_SIMPLE_BLINKY_DEMO_ONLY
* in main.c. This file implements the comprehensive test and demo version.
*
* NOTE 2: This file only contains the source code that is specific to the
* full demo. Generic functions, such FreeRTOS hook functions, and functions
* required to configure the hardware, are defined in main.c.
******************************************************************************
*
* main_full() creates a set of standard demo tasks (including a set of tasks
* that test the interrupt nesting behaviour), some application specific tasks,
* and a timer. It then starts the scheduler. The web documentation provides
* more details of the standard demo application tasks, which provide no
* particular functionality, but do provide a good example of how to use the
* FreeRTOS API.
*
* The interrupt nesting test tasks require that two timers are configured to
* generate interrupts. The interrupt service routines are defined in
* IntQueueTimer.c, and can be used as examples for application writers. They
* do not, however, directly demonstrate the use of FreeRTOS safe API functions
* (those that end in "FromISR"). Therefore, a dummy interrupt implementation
* called Dummy_IRQHandler() is provided at the end of main.c.
*
* In addition to the standard demo tasks, the following tasks and timer are
* defined and/or created within this file:
*
* "Reg test" tasks - These fill the registers with known values, then check
* that each register maintains its expected value for the lifetime of the
* task. Each task uses a different set of values. The reg test tasks execute
* with a very low priority, so get preempted very frequently. A register
* containing an unexpected value is indicative of an error in the context
* switching mechanism.
*
* "Check" software timer - The check timer period is initially set to three
* seconds. Its callback function checks that all the standard demo tasks, and
* the register check tasks, are not only still executing, but are executing
* without reporting any errors. If the check timer callback discovers that a
* task has either stalled, or reported an error, then it changes the period of
* the check timer from the initial three seconds, to just 200ms. The callback
* function also toggles the LED each time it is called. This provides a visual
* indication of the system status: If the LED toggles every three seconds,
* then no issues have been discovered. If the LED toggles every 200ms, then
* an issue has been discovered with at least one task.
*/
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "timers.h"
/* Common demo includes. */
#include "blocktim.h"
#include "countsem.h"
#include "recmutex.h"
#include "IntQueue.h"
/* Hardware specific includes. */
#include "lpc11xx.h"
/* The period after which the check timer will expire provided no errors have
been reported by any of the standard demo tasks. ms are converted to the
equivalent in ticks using the portTICK_RATE_MS constant. */
#define mainCHECK_TIMER_PERIOD_MS ( 3000UL / portTICK_RATE_MS )
/* The period at which the check timer will expire if an error has been
reported in one of the standard demo tasks. ms are converted to the equivalent
in ticks using the portTICK_RATE_MS constant. */
#define mainERROR_CHECK_TIMER_PERIOD_MS ( 200UL / portTICK_RATE_MS )
/* A block time of zero simply means "don't block". */
#define mainDONT_BLOCK ( 0UL )
/*-----------------------------------------------------------*/
/*
* Register check tasks, as described at the top of this file. The nature of
* these files necessitates that they are written in an assembly.
*/
extern void vRegTest1Task( void *pvParameters );
extern void vRegTest2Task( void *pvParameters );
/*
* The hardware only has a single LED. Simply toggle it.
*/
extern void vMainToggleLED( void );
/*
* The check timer callback function, as described at the top of this file.
*/
static void prvCheckTimerCallback( xTimerHandle xTimer );
/*
* Called by main() to create the comprehensive test/demo application if
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is not set to 1.
*/
void main_full( void );
/*-----------------------------------------------------------*/
/* The following two variables are used to communicate the status of the
register check tasks to the check software timer. If the variables keep
incrementing, then the register check tasks has not discovered any errors. If
a variable stops incrementing, then an error has been found. */
volatile unsigned long ulRegTest1LoopCounter = 0UL, ulRegTest2LoopCounter = 0UL;
/*-----------------------------------------------------------*/
void main_full( void )
{
xTimerHandle xCheckTimer = NULL;
/* The register test tasks are asm functions that don't use a stack. The
stack allocated just has to be large enough to hold the task context, and
for the additional required for the stack overflow checking to work (if
configured). */
const size_t xRegTestStackSize = 25U;
/* Create the standard demo tasks, including the interrupt nesting test
tasks. */
vStartInterruptQueueTasks();
vCreateBlockTimeTasks();
vStartCountingSemaphoreTasks();
vStartRecursiveMutexTasks();
/* Create the register test tasks as described at the top of this file.
These are naked functions that don't use any stack. A stack still has
to be allocated to hold the task context. */
xTaskCreate( vRegTest1Task, /* Function that implements the task. */
( signed char * ) "Reg1", /* Text name of the task. */
xRegTestStackSize, /* Stack allocated to the task. */
NULL, /* The task parameter is not used. */
tskIDLE_PRIORITY, /* The priority to assign to the task. */
NULL ); /* Don't receive a handle back, it is not needed. */
xTaskCreate( vRegTest2Task, /* Function that implements the task. */
( signed char * ) "Reg2", /* Text name of the task. */
xRegTestStackSize, /* Stack allocated to the task. */
NULL, /* The task parameter is not used. */
tskIDLE_PRIORITY, /* The priority to assign to the task. */
NULL ); /* Don't receive a handle back, it is not needed. */
/* Create the software timer that performs the 'check' functionality,
as described at the top of this file. */
xCheckTimer = xTimerCreate( ( const signed char * ) "CheckTimer",/* A text name, purely to help debugging. */
( mainCHECK_TIMER_PERIOD_MS ), /* The timer period, in this case 3000ms (3s). */
pdTRUE, /* This is an auto-reload timer, so xAutoReload is set to pdTRUE. */
( void * ) 0, /* The ID is not used, so can be set to anything. */
prvCheckTimerCallback /* The callback function that inspects the status of all the other tasks. */
);
/* If the software timer was created successfully, start it. It won't
actually start running until the scheduler starts. A block time of
zero is used in this call, although any value could be used as the block
time will be ignored because the scheduler has not started yet. */
if( xCheckTimer != NULL )
{
xTimerStart( xCheckTimer, mainDONT_BLOCK );
}
/* Start the kernel. From here on, only tasks and interrupts will run. */
vTaskStartScheduler();
/* If all is well, the scheduler will now be running, and the following
line will never be reached. If the following line does execute, then there
was insufficient FreeRTOS heap memory available for the idle and/or timer
tasks to be created. See the memory management section on the FreeRTOS web
site, or the FreeRTOS tutorial books for more details. */
for( ;; );
}
/*-----------------------------------------------------------*/
/* See the description at the top of this file. */
static void prvCheckTimerCallback( xTimerHandle xTimer )
{
static long lChangedTimerPeriodAlready = pdFALSE;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
unsigned long ulErrorFound = pdFALSE;
/* Check all the demo and test tasks to ensure that they are all still
running, and that none have detected an error. */
if( xAreIntQueueTasksStillRunning() != pdPASS )
{
ulErrorFound |= ( 0x01UL << 0UL );
}
if( xAreBlockTimeTestTasksStillRunning() != pdPASS )
{
ulErrorFound |= ( 0x01UL << 1UL );
}
if( xAreCountingSemaphoreTasksStillRunning() != pdPASS )
{
ulErrorFound |= ( 0x01UL << 2UL );
}
if( xAreRecursiveMutexTasksStillRunning() != pdPASS )
{
ulErrorFound |= ( 0x01UL << 3UL );
}
/* Check that the register test 1 task is still running. */
if( ulLastRegTest1Value == ulRegTest1LoopCounter )
{
ulErrorFound |= ( 0x01UL << 4UL );
}
ulLastRegTest1Value = ulRegTest1LoopCounter;
/* Check that the register test 2 task is still running. */
if( ulLastRegTest2Value == ulRegTest2LoopCounter )
{
ulErrorFound |= ( 0x01UL << 5UL );
}
ulLastRegTest2Value = ulRegTest2LoopCounter;
/* Toggle the check LED to give an indication of the system status. If
the LED toggles every mainCHECK_TIMER_PERIOD_MS milliseconds then
everything is ok. A faster toggle indicates an error. */
vMainToggleLED();
/* Have any errors been latched in ulErrorFound? If so, shorten the
period of the check timer to mainERROR_CHECK_TIMER_PERIOD_MS milliseconds.
This will result in an increase in the rate at which mainCHECK_LED
toggles. */
if( ulErrorFound != pdFALSE )
{
if( lChangedTimerPeriodAlready == pdFALSE )
{
lChangedTimerPeriodAlready = pdTRUE;
/* This call to xTimerChangePeriod() uses a zero block time.
Functions called from inside of a timer callback function must
*never* attempt to block. */
xTimerChangePeriod( xTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
}
}
}
/*-----------------------------------------------------------*/

300
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@ -0,0 +1,300 @@
/*
FreeRTOS V7.1.1 - 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!
***************************************************************************
* *
* 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.
*/
/******************************************************************************
* This project provides two demo applications. A simple blinky style project,
* and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
* select between the two. The simply blinky demo is implemented and described
* in main_blinky.c. The more comprehensive test and demo application is
* implemented and described in main_full.c.
*
* This file implements the code that is not demo specific, including the
* hardware setup and FreeRTOS hook functions. It also contains a dummy
* interrupt service routine called Dummy_IRQHandler() that is provided as an
* example of how to use interrupt safe FreeRTOS API functions (those that end
* in "FromISR").
*
*****************************************************************************/
#error The batch file Demo\CORTEX_M0_LPC1114_LPCXpresso\RTOSDemo\CreateProjectDirectoryStructure.bat must be executed before the first build. After executing the batch file hit F5 to refrech the Eclipse project, then delete this line.
/* Standard includes. */
#include "string.h"
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Hardware specific includes. */
#include "lpc11xx.h"
/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
or 0 to run the more comprehensive test and demo application. */
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
/* The bit on port 0 to which the LED is wired. */
#define mainLED_BIT ( 1UL << 7UL )
/* The configCHECK_FOR_STACK_OVERFLOW setting in FreeRTOSConifg can be used to
check task stacks for overflows. It does not however check the stack used by
interrupts. This demo has a simple addition that will also check the stack used
by interrupts if mainCHECK_INTERRUPT_STACK is set to 1. Note that this check is
only performed from the tick hook function (which runs in an interrupt context).
It is a good debugging aid - but won't catch interrupt stack problems until the
tick interrupt next executes. */
#define mainCHECK_INTERRUPT_STACK 1
#if mainCHECK_INTERRUPT_STACK == 1
const unsigned char ucExpectedInterruptStackValues[] = { 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC };
#endif
/*-----------------------------------------------------------*/
/*
* Perform any application specific hardware configuration. The clocks,
* memory, etc. are configured before main() is called.
*/
static void prvSetupHardware( void );
/*
* The hardware only has a single LED. Simply toggle it.
*/
void vMainToggleLED( void );
/* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0. */
void main_blinky( void );
void main_full( void );
/*-----------------------------------------------------------*/
/* The GPIO port to which the LED is attached. */
static LPC_GPIO_TypeDef * const xGPIO0 = LPC_GPIO0;
/*-----------------------------------------------------------*/
int main( void )
{
/* Prepare the hardware to run this demo. */
prvSetupHardware();
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
of this file. */
#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
{
main_blinky();
}
#else
{
main_full();
}
#endif
return 0;
}
/*-----------------------------------------------------------*/
void vMainToggleLED( void )
{
static unsigned long ulLEDState = 0UL;
if( ulLEDState == 0UL )
{
xGPIO0->MASKED_ACCESS[ mainLED_BIT ] = 0UL;
}
else
{
xGPIO0->MASKED_ACCESS[ mainLED_BIT ] = mainLED_BIT;
}
ulLEDState = !ulLEDState;
}
/*-----------------------------------------------------------*/
static void prvSetupHardware( void )
{
extern unsigned long _vStackTop[], _pvHeapStart[];
unsigned long ulInterruptStackSize;
/* Enable AHB clock for GPIO. */
LPC_SYSCON->SYSAHBCLKCTRL |= ( 1 << 6 );
/* Configure GPIO for LED output. */
xGPIO0->DIR |= mainLED_BIT;
/* The size of the stack used by main and interrupts is not defined in
the linker, but just uses whatever RAM is left. Calculate the amount of
RAM available for the main/interrupt/system stack, and check it against
a reasonable number. If this assert is hit then it is likely you don't
have enough stack to start the kernel, or to allow interrupts to nest.
Note - this is separate to the stacks that are used by tasks. The stacks
that are used by tasks are automatically checked if
configCHECK_FOR_STACK_OVERFLOW is not 0 in FreeRTOSConfig.h - but the stack
used by interrupts is not. Reducing the conifgTOTAL_HEAP_SIZE setting will
increase the stack available to main() and interrupts. */
ulInterruptStackSize = ( ( unsigned long ) _vStackTop ) - ( ( unsigned long ) _pvHeapStart );
configASSERT( ulInterruptStackSize > 350UL );
/* Fill the stack used by main() and interrupts to a known value, so its
use can be manually checked. */
memcpy( ( void * ) _pvHeapStart, ucExpectedInterruptStackValues, sizeof( ucExpectedInterruptStackValues ) );
}
/*-----------------------------------------------------------*/
void vApplicationMallocFailedHook( void )
{
/* vApplicationMallocFailedHook() will only be called if
configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
function that will get called if a call to pvPortMalloc() fails.
pvPortMalloc() is called internally by the kernel whenever a task, queue,
timer or semaphore is created. It is also called by various parts of the
demo application. If heap_1.c or heap_2.c are used, then the size of the
heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
to query the size of free heap space that remains (although it does not
provide information on how the remaining heap might be fragmented). */
taskDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vApplicationIdleHook( void )
{
/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
task. It is essential that code added to this hook function never attempts
to block in any way (for example, call xQueueReceive() with a block time
specified, or call vTaskDelay()). If the application makes use of the
vTaskDelete() API function (as this demo application does) then it is also
important that vApplicationIdleHook() is permitted to return to its calling
function, because it is the responsibility of the idle task to clean up
memory allocated by the kernel to any task that has since been deleted. */
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName )
{
( void ) pcTaskName;
( void ) pxTask;
/* Run time stack overflow checking is performed if
configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
function is called if a stack overflow is detected. */
taskDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vApplicationTickHook( void )
{
#if mainCHECK_INTERRUPT_STACK == 1
extern unsigned long _pvHeapStart[];
/* This function will be called by each tick interrupt if
configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
added here, but the tick hook is called from an interrupt context, so
code must not attempt to block, and only the interrupt safe FreeRTOS API
functions can be used (those that end in FromISR()). */
/* Manually check the last few bytes of the interrupt stack to check they
have not been overwritten. Note - the task stacks are automatically
checked for overflow if configCHECK_FOR_STACK_OVERFLOW is set to 1 or 2
in FreeRTOSConifg.h, but the interrupt stack is not. */
configASSERT( memcmp( ( void * ) _pvHeapStart, ucExpectedInterruptStackValues, sizeof( ucExpectedInterruptStackValues ) ) == 0U );
#endif /* mainCHECK_INTERRUPT_STACK */
}
/*-----------------------------------------------------------*/
#ifdef JUST_AN_EXAMPLE_ISR
void Dummy_IRQHandler(void)
{
long lHigherPriorityTaskWoken = pdFALSE;
/* Clear the interrupt if necessary. */
Dummy_ClearITPendingBit();
/* This interrupt does nothing more than demonstrate how to synchronise a
task with an interrupt. A semaphore is used for this purpose. Note
lHigherPriorityTaskWoken is initialised to zero. Only FreeRTOS API functions
that end in "FromISR" can be called from an ISR. */
xSemaphoreGiveFromISR( xTestSemaphore, &lHigherPriorityTaskWoken );
/* If there was a task that was blocked on the semaphore, and giving the
semaphore caused the task to unblock, and the unblocked task has a priority
higher than the current Running state task (the task that this interrupt
interrupted), then lHigherPriorityTaskWoken will have been set to pdTRUE
internally within xSemaphoreGiveFromISR(). Passing pdTRUE into the
portEND_SWITCHING_ISR() macro will result in a context switch being pended to
ensure this interrupt returns directly to the unblocked, higher priority,
task. Passing pdFALSE into portEND_SWITCHING_ISR() has no effect. */
portEND_SWITCHING_ISR( lHigherPriorityTaskWoken );
}
#endif /* JUST_AN_EXAMPLE_ISR */