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Richard Barry 2012-08-11 21:34:11 +00:00
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commit f508a5f653
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118
FreeRTOS/Demo/PC/FRConfig.h Normal file
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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 FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
#include <conio.h>
/*-----------------------------------------------------------
* Application specific definitions for the x86 port.
*----------------------------------------------------------*/
/* These are the only definitions that can be modified!. */
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 1
#define configUSE_TICK_HOOK 1
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 128 ) /* This can be made smaller if required. */
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 32 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 1
#define configIDLE_SHOULD_YIELD 1
#define configUSE_CO_ROUTINES 1
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 10 )
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
/* The maximum number of characters a task name can take,
including the null terminator. */
#define configMAX_TASK_NAME_LEN ( 16 )
/* Set the following definitions to 1 to include the component, or zero
to exclude the component. */
/* Include/exclude the stated 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
/*
* The tick count (and times defined in tick count units) can be either a 16bit
* or a 32 bit value. See documentation on http://www.FreeRTOS.org to decide
* which to use.
*/
#define configUSE_16_BIT_TICKS 1
#endif /* FREERTOS_CONFIG_H */

124
FreeRTOS/Demo/PC/FileIO/fileIO.c Normal file
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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.
*/
#include <stdio.h>
#include <string.h>
/* Scheduler include files. */
#include "FreeRTOS.h"
#include "task.h"
/* Demo program include files. */
#include "fileio.h"
void vDisplayMessage( const char * const pcMessageToPrint )
{
vTaskSuspendAll();
{
printf( "%s", pcMessageToPrint );
fflush( stdout );
}
xTaskResumeAll();
}
/*-----------------------------------------------------------*/
void vWriteMessageToDisk( const char * const pcMessage )
{
const char * const pcFileName = "a:\\RTOSlog.txt";
const char * const pcSeparator = "\r\n-----------------------\r\n";
FILE *pf;
vTaskSuspendAll();
{
pf = fopen( pcFileName, "a" );
if( pf != NULL )
{
fwrite( pcMessage, strlen( pcMessage ), ( unsigned short ) 1, pf );
fwrite( pcSeparator, strlen( pcSeparator ), ( unsigned short ) 1, pf );
fclose( pf );
}
}
xTaskResumeAll();
}
/*-----------------------------------------------------------*/
void vWriteBufferToDisk( const char * const pcBuffer, unsigned long ulBufferLength )
{
const char * const pcFileName = "a:\\trace.bin";
FILE *pf;
vTaskSuspendAll();
{
pf = fopen( pcFileName, "wb" );
if( pf )
{
fwrite( pcBuffer, ( size_t ) ulBufferLength, ( unsigned short ) 1, pf );
fclose( pf );
}
}
xTaskResumeAll();
}

126
FreeRTOS/Demo/PC/FreeRTOSConfig.h Normal file
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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 FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
#include <i86.h>
#include <conio.h>
/*-----------------------------------------------------------
* 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.
*----------------------------------------------------------*/
#define configUSE_PREEMPTION 1
#define configUSE_IDLE_HOOK 1
#define configUSE_TICK_HOOK 1
#define configTICK_RATE_HZ ( ( portTickType ) 1000 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 256 ) /* This can be made smaller if required. */
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 32 * 1024 ) )
#define configMAX_TASK_NAME_LEN ( 16 )
#define configUSE_TRACE_FACILITY 1
#define configUSE_16_BIT_TICKS 1
#define configIDLE_SHOULD_YIELD 1
#define configUSE_CO_ROUTINES 1
#define configUSE_MUTEXES 1
#define configUSE_COUNTING_SEMAPHORES 1
#define configUSE_ALTERNATIVE_API 1
#define configUSE_RECURSIVE_MUTEXES 1
#define configCHECK_FOR_STACK_OVERFLOW 0 /* Do not use this option on the PC port. */
#define configUSE_APPLICATION_TASK_TAG 1
#define configQUEUE_REGISTRY_SIZE 0
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 10 )
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
/* 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
#define INCLUDE_uxTaskGetStackHighWaterMark 0 /* Do not use this option on the PC port. */
/* An example "task switched in" hook macro definition. */
#define traceTASK_SWITCHED_IN() xTaskCallApplicationTaskHook( NULL, ( void * ) 0xabcd )
extern void vMainQueueSendPassed( void );
#define traceQUEUE_SEND( pxQueue ) vMainQueueSendPassed()
#endif /* FREERTOS_CONFIG_H */

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FreeRTOS/Demo/PC/ParTest/ParTest.c Normal file
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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.
*/
/*
Changes from V1.01:
+ Types used updated.
+ Add vParTestToggleLED();
Changes from V2.0.0
+ Use scheduler suspends in place of critical sections.
*/
#include "FreeRTOS.h"
#include "partest.h"
#include "task.h"
#define partstALL_OUTPUTS_OFF ( ( unsigned char ) 0x00 )
#define partstMAX_OUTPUT_LED ( ( unsigned char ) 7 )
/*lint -e956 File scope parameters okay here. */
static unsigned short usPortAddress = partstDEFAULT_PORT_ADDRESS;
static volatile unsigned char ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
/*lint +e956 */
/*-----------------------------------------------------------
* Simple parallel port IO routines
*-----------------------------------------------------------*/
void vParTestInitialise( void )
{
ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
portOUTPUT_BYTE( usPortAddress, ( unsigned ) partstALL_OUTPUTS_OFF );
}
/*-----------------------------------------------------------*/
void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )
{
unsigned char ucBit = ( unsigned char ) 1;
if( uxLED <= partstMAX_OUTPUT_LED )
{
ucBit <<= uxLED;
}
vTaskSuspendAll();
{
if( xValue == pdTRUE )
{
ucBit ^= ( unsigned char ) 0xff;
ucCurrentOutputValue &= ucBit;
}
else
{
ucCurrentOutputValue |= ucBit;
}
portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );
}
xTaskResumeAll();
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned char ucBit;
if( uxLED <= partstMAX_OUTPUT_LED )
{
ucBit = ( ( unsigned char ) 1 ) << uxLED;
vTaskSuspendAll();
{
if( ucCurrentOutputValue & ucBit )
{
ucCurrentOutputValue &= ~ucBit;
}
else
{
ucCurrentOutputValue |= ucBit;
}
portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );
}
xTaskResumeAll();
}
}

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FreeRTOS/Demo/PC/RTOSDEMO.IDE Normal file
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FreeRTOS/Demo/PC/main.c Normal file
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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.
*/
/**
* Creates all the demo application tasks and co-routines, then starts the
* scheduler.
*
* Main. c also creates a task called "Print". This only executes every
* five seconds but has the highest priority so is guaranteed to get
* processor time. Its main function is to check that all the other tasks
* are still operational. Nearly all the tasks in the demo application
* maintain a unique count that is incremented each time the task successfully
* completes its function. Should any error occur within the task the count is
* permanently halted. The print task checks the count of each task to ensure
* it has changed since the last time the print task executed. If any count is
* found not to have changed the print task displays an appropriate message.
* If all the tasks are still incrementing their unique counts the print task
* displays an "OK" message.
*
* The LED flash tasks do not maintain a count as they already provide visual
* feedback of their status.
*
* The print task blocks on the queue into which messages that require
* displaying are posted. It will therefore only block for the full 5 seconds
* if no messages are posted onto the queue.
*
* Main. c also provides a demonstration of how the trace visualisation utility
* can be used, and how the scheduler can be stopped.
*
* \page MainC main.c
* \ingroup DemoFiles
* <HR>
*/
#include <stdlib.h>
#include <conio.h>
#include "FreeRTOS.h"
#include "task.h"
#include "croutine.h"
#include "partest.h"
#include "serial.h"
/* Demo file headers. */
#include "BlockQ.h"
#include "PollQ.h"
#include "death.h"
#include "crflash.h"
#include "flop.h"
#include "print.h"
#include "comtest.h"
#include "fileio.h"
#include "semtest.h"
#include "integer.h"
#include "dynamic.h"
#include "mevents.h"
#include "crhook.h"
#include "blocktim.h"
#include "AltBlock.h"
#include "GenQTest.h"
#include "QPeek.h"
#include "countsem.h"
#include "AltQTest.h"
#include "AltPollQ.h"
#include "AltBlckQ.h"
#include "RecMutex.h"
/* Priority definitions for the tasks in the demo application. */
#define mainLED_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
#define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
#define mainPRINT_TASK_PRIORITY ( tskIDLE_PRIORITY + 4 )
#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainQUEUE_BLOCK_PRIORITY ( tskIDLE_PRIORITY + 3 )
#define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainSEMAPHORE_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
#define mainGENERIC_QUEUE_PRIORITY ( tskIDLE_PRIORITY )
#define mainPRINT_STACK_SIZE ( ( unsigned short ) 512 )
#define mainDEBUG_LOG_BUFFER_SIZE ( ( unsigned short ) 20480 )
/* The number of flash co-routines to create. */
#define mainNUM_FLASH_CO_ROUTINES ( 8 )
/* Task function for the "Print" task as described at the top of the file. */
static void vErrorChecks( void *pvParameters );
/* Function that checks the unique count of all the other tasks as described at
the top of the file. */
static void prvCheckOtherTasksAreStillRunning( void );
/* Key presses can be used to start/stop the trace visualisation utility or stop
the scheduler. */
static void prvCheckForKeyPresses( void );
/* Buffer used by the trace visualisation utility so only needed if the trace
being used. */
#if configUSE_TRACE_FACILITY == 1
static char pcWriteBuffer[ mainDEBUG_LOG_BUFFER_SIZE ];
#endif
/* Constant definition used to turn on/off the pre-emptive scheduler. */
static const short sUsingPreemption = configUSE_PREEMPTION;
/* Start the math tasks appropriate to the build. The Borland port does
not yet support floating point so uses the integer equivalent. */
static void prvStartMathTasks( void );
/* Check which ever tasks are relevant to this build. */
static portBASE_TYPE prvCheckMathTasksAreStillRunning( void );
/* Used to demonstrate the "task switched in" callback function. */
static portBASE_TYPE prvExampleTaskHook( void * pvParameter );
/* Just used to count the number of times the example task callback function is
called, and the number of times a queue send passes. */
static unsigned long long uxCheckTaskHookCallCount = 0;
static unsigned long long uxQueueSendPassedCount = 0;
/*-----------------------------------------------------------*/
short main( void )
{
/* Initialise hardware and utilities. */
vParTestInitialise();
vPrintInitialise();
/* CREATE ALL THE DEMO APPLICATION TASKS. */
prvStartMathTasks();
vStartComTestTasks( mainCOM_TEST_PRIORITY, serCOM1, ser115200 );
vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
vStartBlockingQueueTasks( mainQUEUE_BLOCK_PRIORITY );
vCreateBlockTimeTasks();
vStartGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );
vStartSemaphoreTasks( mainSEMAPHORE_TASK_PRIORITY );
vStartDynamicPriorityTasks();
vStartMultiEventTasks();
vStartQueuePeekTasks();
vStartCountingSemaphoreTasks();
vStartAltGenericQueueTasks( mainGENERIC_QUEUE_PRIORITY );
vCreateAltBlockTimeTasks();
vStartAltBlockingQueueTasks( mainQUEUE_BLOCK_PRIORITY );
vStartAltPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
vStartRecursiveMutexTasks();
/* Create the "Print" task as described at the top of the file. */
xTaskCreate( vErrorChecks, "Print", mainPRINT_STACK_SIZE, NULL, mainPRINT_TASK_PRIORITY, NULL );
/* This task has to be created last as it keeps account of the number of tasks
it expects to see running. */
vCreateSuicidalTasks( mainCREATOR_TASK_PRIORITY );
/* Create the co-routines that flash the LED's. */
vStartFlashCoRoutines( mainNUM_FLASH_CO_ROUTINES );
/* Create the co-routines that communicate with the tick hook. */
vStartHookCoRoutines();
/* Set the scheduler running. This function will not return unless a task
calls vTaskEndScheduler(). */
vTaskStartScheduler();
return 1;
}
/*-----------------------------------------------------------*/
static portBASE_TYPE prvExampleTaskHook( void * pvParameter )
{
if( pvParameter != ( void * ) 0xabcd )
{
/* The parameter did not contain the value we expected, so cause an
error to be detected by setting the call count back to zero. */
uxCheckTaskHookCallCount = 0;
}
else
{
/* Simply increment a number so we know the callback has been executed. */
uxCheckTaskHookCallCount++;
}
return 0;
}
/*-----------------------------------------------------------*/
void vMainQueueSendPassed( void )
{
/* This is just an example implementation of the "queue send" trace hook. */
uxQueueSendPassedCount++;
}
/*-----------------------------------------------------------*/
static void vErrorChecks( void *pvParameters )
{
portTickType xExpectedWakeTime;
const portTickType xPrintRate = ( portTickType ) 5000 / portTICK_RATE_MS;
const long lMaxAllowableTimeDifference = ( long ) 0;
portTickType xWakeTime;
long lTimeDifference;
const char *pcReceivedMessage;
const char * const pcTaskBlockedTooLongMsg = "Print task blocked too long!\r\n";
const char * const pcUnexpectedHookValueMsg = "Task hook has unexpected value!\r\n";
( void ) pvParameters;
/* Register our callback function. */
vTaskSetApplicationTaskTag( NULL, prvExampleTaskHook );
/* Just for test purposes. */
if( xTaskGetApplicationTaskTag( NULL ) != prvExampleTaskHook )
{
vPrintDisplayMessage( &pcUnexpectedHookValueMsg );
}
/* Loop continuously, blocking, then checking all the other tasks are still
running, before blocking once again. This task blocks on the queue of
messages that require displaying so will wake either by its time out expiring,
or a message becoming available. */
for( ;; )
{
/* Calculate the time we will unblock if no messages are received
on the queue. This is used to check that we have not blocked for too long. */
xExpectedWakeTime = xTaskGetTickCount();
xExpectedWakeTime += xPrintRate;
/* Block waiting for either a time out or a message to be posted that
required displaying. */
pcReceivedMessage = pcPrintGetNextMessage( xPrintRate );
/* Was a message received? */
if( pcReceivedMessage == NULL )
{
/* A message was not received so we timed out, did we unblock at the
expected time? */
xWakeTime = xTaskGetTickCount();
/* Calculate the difference between the time we unblocked and the
time we should have unblocked. */
if( xWakeTime > xExpectedWakeTime )
{
lTimeDifference = ( long ) ( xWakeTime - xExpectedWakeTime );
}
else
{
lTimeDifference = ( long ) ( xExpectedWakeTime - xWakeTime );
}
if( lTimeDifference > lMaxAllowableTimeDifference )
{
/* We blocked too long - create a message that will get
printed out the next time around. If we are not using
preemption then we won't expect the timing to be so
accurate. */
if( sUsingPreemption == pdTRUE )
{
vPrintDisplayMessage( &pcTaskBlockedTooLongMsg );
}
}
/* Check the other tasks are still running, just in case. */
prvCheckOtherTasksAreStillRunning();
}
else
{
/* We unblocked due to a message becoming available. Send the message
for printing. */
vDisplayMessage( pcReceivedMessage );
}
/* Key presses are used to invoke the trace visualisation utility, or end
the program. */
prvCheckForKeyPresses();
}
}
/*-----------------------------------------------------------*/
static void prvCheckForKeyPresses( void )
{
short sIn;
taskENTER_CRITICAL();
#ifdef DEBUG_BUILD
/* kbhit can be used in .exe's that are executed from the command
line, but not if executed through the debugger. */
sIn = 0;
#else
sIn = kbhit();
#endif
taskEXIT_CRITICAL();
if( sIn )
{
/* Key presses can be used to start/stop the trace utility, or end the
program. */
sIn = getch();
switch( sIn )
{
/* Only define keys for turning on and off the trace if the trace
is being used. */
#if configUSE_TRACE_FACILITY == 1
case 't' : vTaskList( pcWriteBuffer );
vWriteMessageToDisk( pcWriteBuffer );
break;
case 's' : vTaskStartTrace( pcWriteBuffer, mainDEBUG_LOG_BUFFER_SIZE );
break;
case 'e' : {
unsigned long ulBufferLength;
ulBufferLength = ulTaskEndTrace();
vWriteBufferToDisk( pcWriteBuffer, ulBufferLength );
}
break;
#endif
default : vTaskEndScheduler();
break;
}
}
}
/*-----------------------------------------------------------*/
static void prvCheckOtherTasksAreStillRunning( void )
{
static short sErrorHasOccurred = pdFALSE;
static unsigned long long uxLastHookCallCount = 0, uxLastQueueSendCount = 0;
if( prvCheckMathTasksAreStillRunning() != pdTRUE )
{
vDisplayMessage( "Maths task count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreComTestTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Com test count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreBlockingQueuesStillRunning() != pdTRUE )
{
vDisplayMessage( "Blocking queues count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreAltBlockingQueuesStillRunning() != pdTRUE )
{
vDisplayMessage( "Alt blocking queues count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xArePollingQueuesStillRunning() != pdTRUE )
{
vDisplayMessage( "Polling queue count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreAltPollingQueuesStillRunning() != pdTRUE )
{
vDisplayMessage( "Alt polling queue count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xIsCreateTaskStillRunning() != pdTRUE )
{
vDisplayMessage( "Incorrect number of tasks running!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreSemaphoreTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Semaphore take count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Dynamic priority count unchanged!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreMultiEventTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in multi events tasks!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreFlashCoRoutinesStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in co-routine flash tasks!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreHookCoRoutinesStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in tick hook to co-routine communications!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in block time test tasks!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreAltBlockTimeTestTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in fast block time test tasks!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreGenericQueueTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in generic queue test task!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreAltGenericQueueTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in fast generic queue test task!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreQueuePeekTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in queue peek test task!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in counting semaphore demo task!\r\n" );
sErrorHasOccurred = pdTRUE;
}
if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
{
vDisplayMessage( "Error in recursive mutex tasks!\r\n" );
sErrorHasOccurred = pdTRUE;
}
/* The hook function associated with this task is called each time the task
is switched in. We therefore expect the number of times the callback
function has been executed to have increrment since the last time this
function executed. */
if( uxCheckTaskHookCallCount <= uxLastHookCallCount )
{
vDisplayMessage( "Error in task hook call count!\r\n" );
sErrorHasOccurred = pdTRUE;
}
else
{
uxLastHookCallCount = uxCheckTaskHookCallCount;
}
/* We would expect some queue sending to occur between calls of this
function. */
if( uxQueueSendPassedCount <= uxLastQueueSendCount )
{
vDisplayMessage( "Error in queue send hook call count!\r\n" );
sErrorHasOccurred = pdTRUE;
}
else
{
uxLastQueueSendCount = uxQueueSendPassedCount;
}
if( sErrorHasOccurred == pdFALSE )
{
vDisplayMessage( "OK " );
}
}
/*-----------------------------------------------------------*/
static void prvStartMathTasks( void )
{
#ifdef BCC_INDUSTRIAL_PC_PORT
/* The Borland project does not yet support floating point. */
vStartIntegerMathTasks( tskIDLE_PRIORITY );
#else
vStartMathTasks( tskIDLE_PRIORITY );
#endif
}
/*-----------------------------------------------------------*/
static portBASE_TYPE prvCheckMathTasksAreStillRunning( void )
{
#ifdef BCC_INDUSTRIAL_PC_PORT
/* The Borland project does not yet support floating point. */
return xAreIntegerMathsTaskStillRunning();
#else
return xAreMathsTaskStillRunning();
#endif
}
/*-----------------------------------------------------------*/
void vApplicationIdleHook( void )
{
/* The co-routines are executed in the idle task using the idle task
hook. */
vCoRoutineSchedule();
}
/*-----------------------------------------------------------*/

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/*
This serial port driver is borrowed heavily from DZComm. I have
simplified it by removing a lot of the functionality (hardware
flow control, etc.). For more details and the full version see
http://dzcomm.sourceforge.net
*/
/*
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.
*/
#include <stdlib.h>
#include <dos.h>
#include "FreeRTOS.h"
#include "queue.h"
#include "task.h"
#include "semphr.h"
#include "portasm.h"
#define serMAX_IRQs ( 16 )
#define serTRANSMIT_HOLD_EMPTY_INT ( 0x02 )
#define serCOM1_STANDARD_IRQ ( ( unsigned char ) 4 )
#define serCOM2_STANDARD_IRQ ( ( unsigned char ) 3 )
#define serIMR_8259_0 ( ( unsigned char ) 0x21 )
#define serIMR_8259_1 ( ( unsigned char ) 0xa1 )
#define serISR_8259_0 ( ( unsigned char ) 0x20 )
#define serISR_8259_1 ( ( unsigned char ) 0xa0 )
#define serALL_COMS_INTERRUPTS ( ( unsigned char ) 0x0f )
#define serALL_MODEM_CTRL_INTERRUPTS ( ( unsigned char ) 0x0f )
#define serTRANSMIT_HOLD_OFFSET ( 0 )
#define serRECEIVE_DATA_OFFSET ( 0 )
#define serBAUD_RATE_DIVISOR_LOW_OFFSET ( 0 )
#define serBAUD_RATE_DIVISOR_HIGH_OFFSET ( 1 )
#define serINTERRUPT_ENABLE_OFFSET ( 1 )
#define serINTERRUPT_ID_OFFSET ( 2 )
#define serFIFO_CTRL_OFFSET ( 2 )
#define serLINE_CTRL_OFFSET ( 3 )
#define serMODEM_CTRL_OFFSET ( 4 )
#define serLINE_STATUS_OFFSET ( 5 )
#define serMODEM_STATUS_OFFSET ( 6 )
#define serSCR_OFFSET ( 7 )
#define serMAX_BAUD ( ( unsigned long ) 115200UL )
#define serNO_INTERRUPTS ( 0x00 )
#define vInterruptOn( pxPort, ucInterrupt ) \
{ \
unsigned char ucIn = portINPUT_BYTE( pxPort->usInterruptEnableReg ); \
if( !( ucIn & ucInterrupt ) ) \
{ \
portOUTPUT_BYTE( pxPort->usInterruptEnableReg, ucIn | ucInterrupt ); \
} \
}
/*-----------------------------------------------------------*/
#define vInterruptOff( pxPort, ucInterrupt ) \
{ \
unsigned char ucIn = portINPUT_BYTE( pxPort->usInterruptEnableReg ); \
if( ucIn & ucInterrupt ) \
{ \
portOUTPUT_BYTE( pxPort->usInterruptEnableReg, ucIn & ~ucInterrupt); \
} \
}
/*-----------------------------------------------------------*/
typedef enum
{
serCOM1,
serCOM2,
serCOM3,
serCOM4,
serCOM5,
serCOM6,
serCOM7,
serCOM8
} eCOMPort;
typedef enum
{
serNO_PARITY,
serODD_PARITY,
serEVEN_PARITY,
serMARK_PARITY,
serSPACE_PARITY
} eParity;
typedef enum
{
serSTOP_1,
serSTOP_2
} eStopBits;
typedef enum
{
serBITS_5,
serBITS_6,
serBITS_7,
serBITS_8
} eDataBits;
typedef enum
{
ser50,
ser75,
ser110,
ser134,
ser150,
ser200,
ser300,
ser600,
ser1200,
ser1800,
ser2400,
ser4800,
ser9600,
ser19200,
ser38400,
ser57600,
ser115200
} eBaud;
/* This *MUST* match the order in the eBaud definition. */
unsigned long ulBaudFromEnum[] =
{
( unsigned long ) 50,
( unsigned long ) 75,
( unsigned long ) 110,
( unsigned long ) 134,
( unsigned long ) 150,
( unsigned long ) 200,
( unsigned long ) 300,
( unsigned long ) 600,
( unsigned long ) 1200,
( unsigned long ) 1800,
( unsigned long ) 2400,
( unsigned long ) 4800,
( unsigned long ) 9600,
( unsigned long ) 19200,
( unsigned long ) 38400UL,
( unsigned long ) 57600UL,
( unsigned long ) 115200UL
};
typedef struct xCOM_PORT
{
unsigned short sPort; /* comm port address eg. 0x3f8 */
unsigned char ucIRQ; /* comm IRQ eg. 3 */
/* Next two fields used for setting up the IRQ routine and
* (un)masking the interrupt in certain circumstances.
*/
unsigned short usIRQVector;
unsigned char ucInterruptEnableMast;
/* Read/Write buffers. */
xQueueHandle xRxedChars;
xQueueHandle xCharsForTx;
/* This lot are set up to minimise CPU time where accessing the comm
* port's registers.
*/
unsigned short usTransmitHoldReg;
unsigned short usReceiveDataRegister;
unsigned short usBaudRateDivisorLow;
unsigned short usBaudRateDivisorHigh;
unsigned short usInterruptEnableReg;
unsigned short usInterruptIDReg;
unsigned short usFIFOCtrlReg;
unsigned short usLineCtrlReg;
unsigned short usModemCtrlReg;
unsigned short usLineStatusReg;
unsigned short usModemStatusReg;
unsigned short usSCRReg;
unsigned short us8259InterruptServiceReg;
unsigned short us8259InterruptMaskReg;
/* This semaphore does nothing useful except test a feature of the
scheduler. */
xSemaphoreHandle xTestSem;
} xComPort;
typedef xComPort *xComPortHandle;
/* A xComPort structure can be associated with each IRQ. Initially none
are create/installed. */
xComPort *xPortStatus[ serMAX_IRQs ] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
/*-----------------------------------------------------------*/
/* These prototypes are repeated here so we don't have to include the serial header. This allows
the xComPortHandle structure details to be private to this file. */
xComPortHandle xSerialPortInit( eCOMPort ePort, eBaud eWantedBaud, eParity eWantedParity, eDataBits eWantedDataBits, eStopBits eWantedStopBits, unsigned portBASE_TYPE uxBufferLength );
portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, char *pcRxedChar, portTickType xBlockTime );
portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, char cOutChar, portTickType xBlockTime );
portBASE_TYPE xSerialWaitForSemaphore( xComPortHandle xPort );
static void prvSetupPortHardware( xComPort *pxPort, eCOMPort ePort, eBaud eWantedBaud, eParity eWantedParity, eDataBits eWantedDataBits, eStopBits eWantedStopBits );
static short sComPortISR( const xComPort * const pxPort );
/*-----------------------------------------------------------*/
/* Define an interrupt handler for each slot in the xPortStatus array. */
#define COM_IRQ_WRAPPER(N) \
static void __interrupt COM_IRQ##N##_WRAPPER( void ) \
{ \
portDISABLE_INTERRUPTS(); \
if( sComPortISR( xPortStatus[##N##] ) ) \
{ \
portSWITCH_CONTEXT(); \
} \
}
COM_IRQ_WRAPPER( 0 )
COM_IRQ_WRAPPER( 1 )
COM_IRQ_WRAPPER( 2 )
COM_IRQ_WRAPPER( 3 )
COM_IRQ_WRAPPER( 4 )
COM_IRQ_WRAPPER( 5 )
COM_IRQ_WRAPPER( 6 )
COM_IRQ_WRAPPER( 7 )
COM_IRQ_WRAPPER( 8 )
COM_IRQ_WRAPPER( 9 )
COM_IRQ_WRAPPER( 10 )
COM_IRQ_WRAPPER( 11 )
COM_IRQ_WRAPPER( 12 )
COM_IRQ_WRAPPER( 13 )
COM_IRQ_WRAPPER( 14 )
COM_IRQ_WRAPPER( 15 )
static pxISR xISRs[ serMAX_IRQs ] =
{
COM_IRQ0_WRAPPER,
COM_IRQ1_WRAPPER,
COM_IRQ2_WRAPPER,
COM_IRQ3_WRAPPER,
COM_IRQ4_WRAPPER,
COM_IRQ5_WRAPPER,
COM_IRQ6_WRAPPER,
COM_IRQ7_WRAPPER,
COM_IRQ8_WRAPPER,
COM_IRQ9_WRAPPER,
COM_IRQ10_WRAPPER,
COM_IRQ11_WRAPPER,
COM_IRQ12_WRAPPER,
COM_IRQ13_WRAPPER,
COM_IRQ14_WRAPPER,
COM_IRQ15_WRAPPER
};
static pxISR xOldISRs[ serMAX_IRQs ] = { NULL };
/*-----------------------------------------------------------*/
xComPortHandle xSerialPortInit( eCOMPort ePort, eBaud eWantedBaud, eParity eWantedParity, eDataBits eWantedDataBits, eStopBits eWantedStopBits, unsigned portBASE_TYPE uxBufferLength )
{
xComPort *pxPort;
/* Create a structure to handle this port. */
pxPort = ( xComPort * ) pvPortMalloc( sizeof( xComPort ) );
if( pxPort != NULL )
{
/* Create the queues used by the comtest task. */
pxPort->xRxedChars = xQueueCreate( uxBufferLength, ( unsigned portBASE_TYPE ) sizeof( char ) );
pxPort->xCharsForTx = xQueueCreate( uxBufferLength, ( unsigned portBASE_TYPE ) sizeof( char ) );
/* Create the test semaphore. This does nothing useful except test a feature of the scheduler. */
vSemaphoreCreateBinary( pxPort->xTestSem );
prvSetupPortHardware( pxPort, ePort, eWantedBaud, eWantedParity, eWantedDataBits, eWantedStopBits );
return pxPort;
}
return NULL;
}
/*-----------------------------------------------------------*/
static void prvSetupPortHardware( xComPort *pxPort, eCOMPort ePort, eBaud eWantedBaud, eParity eWantedParity, eDataBits eWantedDataBits, eStopBits eWantedStopBits )
{
short sIn;
unsigned long ulDivisor;
unsigned char ucDivisorLow;
unsigned char ucDivisorHigh;
unsigned char ucCommParam;
/* IRQ numbers - standard */
if( ( ePort == serCOM1 ) || ( ePort == serCOM3 ) || ( ePort == serCOM5 ) || ( ePort == serCOM7 ) )
{
pxPort->ucIRQ = serCOM1_STANDARD_IRQ;
pxPort->sPort = 0x3f8;
}
else
{
pxPort->ucIRQ = serCOM2_STANDARD_IRQ;
pxPort->sPort = 0x2f8;
}
/* Set up variables in port making it easy to see which sIn/o address is which */
pxPort->usTransmitHoldReg = pxPort->sPort + serTRANSMIT_HOLD_OFFSET;
pxPort->usReceiveDataRegister = pxPort->sPort + serRECEIVE_DATA_OFFSET;
pxPort->usBaudRateDivisorLow = pxPort->sPort + serBAUD_RATE_DIVISOR_LOW_OFFSET;
pxPort->usBaudRateDivisorHigh = pxPort->sPort + serBAUD_RATE_DIVISOR_HIGH_OFFSET;
pxPort->usInterruptEnableReg = pxPort->sPort + serINTERRUPT_ENABLE_OFFSET;
pxPort->usInterruptIDReg = pxPort->sPort + serINTERRUPT_ID_OFFSET;
pxPort->usFIFOCtrlReg = pxPort->sPort + serFIFO_CTRL_OFFSET;
pxPort->usLineCtrlReg = pxPort->sPort + serLINE_CTRL_OFFSET;
pxPort->usModemCtrlReg = pxPort->sPort + serMODEM_CTRL_OFFSET;
pxPort->usLineStatusReg = pxPort->sPort + serLINE_STATUS_OFFSET;
pxPort->usModemStatusReg = pxPort->sPort + serMODEM_STATUS_OFFSET;
pxPort->usSCRReg = pxPort->sPort + serSCR_OFFSET;
/* Set communication parameters. */
ulDivisor = serMAX_BAUD / ulBaudFromEnum[ eWantedBaud ];
ucDivisorLow = ( unsigned char ) ulDivisor & ( unsigned char ) 0xff;
ucDivisorHigh = ( unsigned char ) ( ( ( unsigned short ) ulDivisor >> 8 ) & 0xff );
switch( eWantedParity )
{
case serNO_PARITY: ucCommParam = 0x00;
break;
case serODD_PARITY: ucCommParam = 0x08;
break;
case serEVEN_PARITY: ucCommParam = 0x18;
break;
case serMARK_PARITY: ucCommParam = 0x28;
break;
case serSPACE_PARITY: ucCommParam = 0x38;
break;
default: ucCommParam = 0x00;
break;
}
switch ( eWantedDataBits )
{
case serBITS_5: ucCommParam |= 0x00;
break;
case serBITS_6: ucCommParam |= 0x01;
break;
case serBITS_7: ucCommParam |= 0x02;
break;
case serBITS_8: ucCommParam |= 0x03;
break;
default: ucCommParam |= 0x03;
break;
}
if( eWantedStopBits == serSTOP_2 )
{
ucCommParam |= 0x04;
}
/* Reset UART into known state - Thanks to Bradley Town */
portOUTPUT_BYTE( pxPort->usLineCtrlReg, 0x00 ); /* Access usTransmitHoldReg/RBR/usInterruptEnableReg */
portOUTPUT_BYTE( pxPort->usInterruptEnableReg, 0x00 ); /* Disable interrupts from UART */
portOUTPUT_BYTE( pxPort->usModemCtrlReg, 0x04 ); /* Enable some multi-port cards */
/* Code based on stuff from SVAsync lib. Clear UART Status and data registers
setting up FIFO if possible */
sIn = portINPUT_BYTE( pxPort->usSCRReg );
portOUTPUT_BYTE( pxPort->usSCRReg, 0x55 );
if( portINPUT_BYTE( pxPort->usSCRReg ) == 0x55 )
{
/* The chip is better than an 8250 */
portOUTPUT_BYTE( pxPort->usSCRReg, sIn ); /* Set usSCRReg back to what it was before */
portINPUT_BYTE( pxPort->usSCRReg); /* Give slow motherboards a chance */
/* Try and start the FIFO. It appears that some chips need a two call
protocol, but those that don't seem to work even if you do start it twice.
The first call is simply to start it, the second starts it and sets an 8
byte FIFO trigger level. */
portOUTPUT_BYTE( pxPort->usFIFOCtrlReg, 0x01 );
portINPUT_BYTE( pxPort->usFIFOCtrlReg ); /* Give slow motherboards a chance to catch up */
portOUTPUT_BYTE( pxPort->usFIFOCtrlReg, 0x87 );
/* Check that the FIFO initialised */
if( ( portINPUT_BYTE( pxPort->usInterruptIDReg ) & 0xc0 ) != 0xc0 )
{
/* It didn't so we assume it isn't there but disable it to be on the
safe side. */
portOUTPUT_BYTE( pxPort->usInterruptIDReg, 0xfe );
}
}
/* End of (modified) SVAsync code.
Set interrupt parameters calculating mask for 8259 controller's
IMR and number of interrupt handler for given irq level */
if (pxPort->ucIRQ <= 7)
{
/* if 0<=irq<=7 first IMR address used */
pxPort->ucInterruptEnableMast = ~(0x01 << pxPort->ucIRQ);
pxPort->usIRQVector = pxPort->ucIRQ + 8;
pxPort->us8259InterruptMaskReg = serIMR_8259_0;
pxPort->us8259InterruptServiceReg = serISR_8259_0;
}
else
{
pxPort->ucInterruptEnableMast = ~( 0x01 << ( pxPort->ucIRQ % 8 ) );
pxPort->usIRQVector = 0x70 + ( pxPort->ucIRQ - 8) ;
pxPort->us8259InterruptMaskReg = serIMR_8259_1;
pxPort->us8259InterruptServiceReg = serISR_8259_1;
}
/* Set Port Toggle to usBaudRateDivisorLow/usBaudRateDivisorHigh registers
to set baud rate */
portOUTPUT_BYTE( pxPort->usLineCtrlReg, ucCommParam | 0x80 );
portOUTPUT_BYTE( pxPort->usBaudRateDivisorLow, ucDivisorLow );
portOUTPUT_BYTE( pxPort->usBaudRateDivisorHigh, ucDivisorHigh );
/* reset usLineCtrlReg and Port Toggleout */
portOUTPUT_BYTE( pxPort->usLineCtrlReg, ucCommParam & 0x7F );
portENTER_CRITICAL();
if( xPortStatus[ pxPort->ucIRQ ] == NULL )
{
xPortStatus[ pxPort->ucIRQ ] = pxPort;
}
xOldISRs[ pxPort->ucIRQ ] = _dos_getvect( pxPort->usIRQVector );
_dos_setvect( pxPort->usIRQVector, xISRs[ pxPort->ucIRQ ] );
/* enable interrupt pxPort->ucIRQ level */
portOUTPUT_BYTE( pxPort->us8259InterruptMaskReg, portINPUT_BYTE( pxPort->us8259InterruptMaskReg ) & pxPort->ucInterruptEnableMast );
/* And allow interrupts again now the hairy bit's done */
portEXIT_CRITICAL();
/* This version does not allow flow control. */
portOUTPUT_BYTE( pxPort->usModemCtrlReg, serALL_MODEM_CTRL_INTERRUPTS );
/* enable all communication's interrupts */
portOUTPUT_BYTE( pxPort->usInterruptEnableReg, serALL_COMS_INTERRUPTS );
}
/*-----------------------------------------------------------*/
static short sComPortISR( const xComPort * const pxPort )
{
short sInterruptID;
char cIn, cOut;
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
extern void vComTestUnsuspendTask( void );
portOUTPUT_BYTE( pxPort->us8259InterruptMaskReg, ( portINPUT_BYTE( pxPort->us8259InterruptMaskReg) | ~pxPort->ucInterruptEnableMast ) );
/* Decide which UART has issued the interrupt */
sInterruptID = portINPUT_BYTE( pxPort->usInterruptIDReg );
/* service whatever requests the calling UART may have. The top 4 bits are
either unused or indicate the presence of a functioning FIFO, which we don't
need to know. So trim them off to simplify the switch statement below. */
sInterruptID &= 0x0f;
do
{
switch( sInterruptID )
{
case 0x0c: /* Timeout
Called when FIFO not up to trigger level but no activity for
a while. Handled exactly as RDAINT, see below for
description. */
do
{
cIn = ( char ) portINPUT_BYTE( pxPort->usReceiveDataRegister );
xQueueSendFromISR( pxPort->xRxedChars, &cIn, &xHigherPriorityTaskWoken );
/* Also release the semaphore - this does nothing interesting and is just a test.
We first attempt to unsuspend the task to check the scheduler correctely detects
this as an invalid call, then give the semaphore for real. */
vComTestUnsuspendTask();
xSemaphoreGiveFromISR( pxPort->xTestSem, &xHigherPriorityTaskWoken );
} while( portINPUT_BYTE( pxPort->usLineStatusReg ) & 0x01 );
break;
case 0x06: /* LSINT */
portINPUT_BYTE( pxPort->usLineStatusReg );
break;
case 0x04: /* RDAINT */
/* The usInterruptIDReg flag tested above stops when the
FIFO is below the trigger level rather than empty, whereas
this flag allows one to empty it: (do loop because there
must be at least one to read by virtue of having got here.) */
do
{
cIn = ( char ) portINPUT_BYTE( pxPort->usReceiveDataRegister );
xQueueSendFromISR( pxPort->xRxedChars, &cIn, &xHigherPriorityTaskWoken );
/* Also release the semaphore - this does nothing interesting and is just a test.
We first attempt to unsuspend the task to check the scheduler correctely detects
this as an invalid call, then give the semaphore for real. */
vComTestUnsuspendTask();
xSemaphoreGiveFromISR( pxPort->xTestSem, &xHigherPriorityTaskWoken );
} while( portINPUT_BYTE( pxPort->usLineStatusReg ) & 0x01 );
break;
case 0x02: /* serTRANSMIT_HOLD_EMPTY_INT */
if( xQueueReceiveFromISR( pxPort->xCharsForTx, &cOut, &xHigherPriorityTaskWoken ) != pdTRUE )
{
/* Queue empty, nothing to send */
vInterruptOff( pxPort, serTRANSMIT_HOLD_EMPTY_INT);
}
else
{
portOUTPUT_BYTE( pxPort->usTransmitHoldReg, ( short ) cOut );
}
break;
case 0x00: /* MSINT */
portINPUT_BYTE( pxPort->usModemStatusReg );
break;
}
/* Get the next instruction, trimming as above */
sInterruptID = portINPUT_BYTE( pxPort->usInterruptIDReg ) & 0x0f;
} while( !( sInterruptID & 0x01 ) );
if( pxPort->ucIRQ > 7 )
{
portOUTPUT_BYTE( 0xA0, 0x60 + ( pxPort->ucIRQ & 0x07 ) );
portOUTPUT_BYTE( 0x20, 0x62);
}
else
{
portOUTPUT_BYTE( 0x20, 0x60 + pxPort->ucIRQ );
}
portOUTPUT_BYTE( pxPort->us8259InterruptMaskReg, portINPUT_BYTE( pxPort->us8259InterruptMaskReg ) & pxPort->ucInterruptEnableMast );
/* If posting any of the characters to a queue woke a task that was blocked on
the queue we may want to return to the task just woken (depending on its
priority relative to the task this ISR interrupted. */
return xHigherPriorityTaskWoken;
}
/*-----------------------------------------------------------*/
portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, char *pcRxedChar, portTickType xBlockTime )
{
/* Get the next character from the buffer, note that this routine is only
called having checked that the is (at least) one to get */
if( xQueueReceive( pxPort->xRxedChars, pcRxedChar, xBlockTime ) )
{
return pdTRUE;
}
else
{
return pdFALSE;
}
}
/*-----------------------------------------------------------*/
portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, char cOutChar, portTickType xBlockTime )
{
if( xQueueSend( pxPort->xCharsForTx, &cOutChar, xBlockTime ) != pdPASS )
{
return pdFAIL;
}
vInterruptOn( pxPort, serTRANSMIT_HOLD_EMPTY_INT );
return pdPASS;
}
/*-----------------------------------------------------------*/
void vSerialPutString( xComPortHandle pxPort, const char * const pcString, unsigned short usStringLength )
{
char * pcNextChar;
const portTickType xNoBlock = ( portTickType ) 0;
/* Stop warnings. */
( void ) usStringLength;
pcNextChar = ( char * ) pcString;
while( *pcNextChar )
{
xSerialPutChar( pxPort, *pcNextChar, xNoBlock );
pcNextChar++;
}
}
/*-----------------------------------------------------------*/
portBASE_TYPE xSerialWaitForSemaphore( xComPortHandle xPort )
{
const portTickType xBlockTime = ( portTickType ) 0xffff;
/* This function does nothing interesting, but test the
semaphore from ISR mechanism. */
return xSemaphoreTake( xPort->xTestSem, xBlockTime );
}
/*-----------------------------------------------------------*/
void vSerialClose( xComPortHandle xPort )
{
portENTER_CRITICAL();
/* Turn off the interrupts. */
portOUTPUT_BYTE( xPort->usModemCtrlReg, serNO_INTERRUPTS );
portOUTPUT_BYTE( xPort->usInterruptEnableReg, serNO_INTERRUPTS );
/* Put back the original ISR. */
_dos_setvect( xPort->usIRQVector, xOldISRs[ xPort->ucIRQ ] );
/* Remove the reference in the array of xComPort structures. */
xPortStatus[ xPort->ucIRQ ] = NULL;
/* Delete the queues. */
vQueueDelete( xPort->xRxedChars );
vQueueDelete( xPort->xCharsForTx );
vPortFree( ( void * ) xPort );
portEXIT_CRITICAL();
}