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Richard Barry 2008-02-13 10:36:35 +00:00
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94
20080212/Demo/PC/FRConfig.h Normal file
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/*
FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
+++ http://www.FreeRTOS.org +++
Documentation, latest information, license and contact details.
+++ http://www.SafeRTOS.com +++
A version that is certified for use in safety critical systems.
+++ http://www.OpenRTOS.com +++
Commercial support, development, porting, licensing and training services.
***************************************************************************
*/
#ifndef 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 portSHORT ) 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 */

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20080212/Demo/PC/FileIO/fileIO.c Normal file
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/*
FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
+++ http://www.FreeRTOS.org +++
Documentation, latest information, license and contact details.
+++ http://www.SafeRTOS.com +++
A version that is certified for use in safety critical systems.
+++ http://www.OpenRTOS.com +++
Commercial support, development, porting, licensing and training services.
***************************************************************************
*/
#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 portCHAR * const pcMessageToPrint )
{
taskENTER_CRITICAL();
printf( "%s", pcMessageToPrint );
fflush( stdout );
taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/
void vWriteMessageToDisk( const portCHAR * const pcMessage )
{
const portCHAR * const pcFileName = "a:\\RTOSlog.txt";
const portCHAR * const pcSeparator = "\r\n-----------------------\r\n";
FILE *pf;
taskENTER_CRITICAL();
{
pf = fopen( pcFileName, "a" );
if( pf != NULL )
{
fwrite( pcMessage, strlen( pcMessage ), ( unsigned portSHORT ) 1, pf );
fwrite( pcSeparator, strlen( pcSeparator ), ( unsigned portSHORT ) 1, pf );
fclose( pf );
}
}
taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/
void vWriteBufferToDisk( const portCHAR * const pcBuffer, unsigned portLONG ulBufferLength )
{
const portCHAR * const pcFileName = "a:\\trace.bin";
FILE *pf;
taskENTER_CRITICAL();
{
pf = fopen( pcFileName, "wb" );
if( pf )
{
fwrite( pcBuffer, ( size_t ) ulBufferLength, ( unsigned portSHORT ) 1, pf );
fclose( pf );
}
}
taskEXIT_CRITICAL();
}

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20080212/Demo/PC/FreeRTOSConfig.h Normal file
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/*
FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
+++ http://www.FreeRTOS.org +++
Documentation, latest information, license and contact details.
+++ http://www.SafeRTOS.com +++
A version that is certified for use in safety critical systems.
+++ http://www.OpenRTOS.com +++
Commercial support, development, porting, licensing and training services.
***************************************************************************
*/
#ifndef 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.
*----------------------------------------------------------*/
#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 portSHORT ) 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 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
#endif /* FREERTOS_CONFIG_H */

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/*
FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
+++ http://www.FreeRTOS.org +++
Documentation, latest information, license and contact details.
+++ http://www.SafeRTOS.com +++
A version that is certified for use in safety critical systems.
+++ http://www.OpenRTOS.com +++
Commercial support, development, porting, licensing and training services.
***************************************************************************
*/
/*
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 portCHAR ) 0x00 )
#define partstMAX_OUTPUT_LED ( ( unsigned portCHAR ) 7 )
/*lint -e956 File scope parameters okay here. */
static unsigned portSHORT usPortAddress = partstDEFAULT_PORT_ADDRESS;
static volatile unsigned portCHAR 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 portCHAR ucBit = ( unsigned portCHAR ) 1;
if( uxLED <= partstMAX_OUTPUT_LED )
{
ucBit <<= uxLED;
}
vTaskSuspendAll();
{
if( xValue == pdTRUE )
{
ucBit ^= ( unsigned portCHAR ) 0xff;
ucCurrentOutputValue &= ucBit;
}
else
{
ucCurrentOutputValue |= ucBit;
}
portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );
}
xTaskResumeAll();
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned portCHAR ucBit;
if( uxLED <= partstMAX_OUTPUT_LED )
{
ucBit = ( ( unsigned portCHAR ) 1 ) << uxLED;
vTaskSuspendAll();
{
if( ucCurrentOutputValue & ucBit )
{
ucCurrentOutputValue &= ~ucBit;
}
else
{
ucCurrentOutputValue |= ucBit;
}
portOUTPUT_BYTE( usPortAddress, ( unsigned ) ucCurrentOutputValue );
}
xTaskResumeAll();
}
}

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20080212/Demo/PC/main.c Normal file
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/*
FreeRTOS.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
+++ http://www.FreeRTOS.org +++
Documentation, latest information, license and contact details.
+++ http://www.SafeRTOS.com +++
A version that is certified for use in safety critical systems.
+++ http://www.OpenRTOS.com +++
Commercial support, development, porting, licensing and training services.
***************************************************************************
*/
/**
* 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 portSHORT ) 512 )
#define mainDEBUG_LOG_BUFFER_SIZE ( ( unsigned portSHORT ) 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 portCHAR pcWriteBuffer[ mainDEBUG_LOG_BUFFER_SIZE ];
#endif
/* Constant definition used to turn on/off the pre-emptive scheduler. */
static const portSHORT 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 );
/*-----------------------------------------------------------*/
portSHORT 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 void vErrorChecks( void *pvParameters )
{
portTickType xExpectedWakeTime;
const portTickType xPrintRate = ( portTickType ) 5000 / portTICK_RATE_MS;
const portLONG lMaxAllowableTimeDifference = ( portLONG ) 0;
portTickType xWakeTime;
portLONG lTimeDifference;
const portCHAR *pcReceivedMessage;
const portCHAR * const pcTaskBlockedTooLongMsg = "Print task blocked too long!\r\n";
( void ) pvParameters;
/* 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 = ( portLONG ) ( xWakeTime - xExpectedWakeTime );
}
else
{
lTimeDifference = ( portLONG ) ( 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 )
{
portSHORT 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 portLONG ulBufferLength;
ulBufferLength = ulTaskEndTrace();
vWriteBufferToDisk( pcWriteBuffer, ulBufferLength );
}
break;
#endif
default : vTaskEndScheduler();
break;
}
}
}
/*-----------------------------------------------------------*/
static void prvCheckOtherTasksAreStillRunning( void )
{
static portSHORT sErrorHasOccurred = pdFALSE;
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;
}
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.org V4.7.1 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
+++ http://www.FreeRTOS.org +++
Documentation, latest information, license and contact details.
+++ http://www.SafeRTOS.com +++
A version that is certified for use in safety critical systems.
+++ http://www.OpenRTOS.com +++
Commercial support, development, porting, licensing and training services.
***************************************************************************
*/
/*
Changes from V1.00:
+ Call to the more efficient portSWITCH_CONTEXT() replaces the call to
taskYIELD() in the ISR.
Changes from V1.2.0:
+ Added vSerialPutString().
Changes from V1.2.3
+ The function xPortInitMinimal() has been renamed to
xSerialPortInitMinimal() and the function xPortInit() has been renamed
to xSerialPortInit().
Changes From V2.0.0
+ Use portTickType in place of unsigned pdLONG for delay periods.
+ cQueueReieveFromISR() used in place of xQueueReceive() in ISR.
*/
#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 portCHAR ) 4 )
#define serCOM2_STANDARD_IRQ ( ( unsigned portCHAR ) 3 )
#define serIMR_8259_0 ( ( unsigned portCHAR ) 0x21 )
#define serIMR_8259_1 ( ( unsigned portCHAR ) 0xa1 )
#define serISR_8259_0 ( ( unsigned portCHAR ) 0x20 )
#define serISR_8259_1 ( ( unsigned portCHAR ) 0xa0 )
#define serALL_COMS_INTERRUPTS ( ( unsigned portCHAR ) 0x0f )
#define serALL_MODEM_CTRL_INTERRUPTS ( ( unsigned portCHAR ) 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 portLONG ) 115200UL )
#define serNO_INTERRUPTS ( 0x00 )
#define vInterruptOn( pxPort, ucInterrupt ) \
{ \
unsigned portCHAR ucIn = portINPUT_BYTE( pxPort->usInterruptEnableReg ); \
if( !( ucIn & ucInterrupt ) ) \
{ \
portOUTPUT_BYTE( pxPort->usInterruptEnableReg, ucIn | ucInterrupt ); \
} \
}
/*-----------------------------------------------------------*/
#define vInterruptOff( pxPort, ucInterrupt ) \
{ \
unsigned portCHAR 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 portLONG ulBaudFromEnum[] =
{
( unsigned portLONG ) 50,
( unsigned portLONG ) 75,
( unsigned portLONG ) 110,
( unsigned portLONG ) 134,
( unsigned portLONG ) 150,
( unsigned portLONG ) 200,
( unsigned portLONG ) 300,
( unsigned portLONG ) 600,
( unsigned portLONG ) 1200,
( unsigned portLONG ) 1800,
( unsigned portLONG ) 2400,
( unsigned portLONG ) 4800,
( unsigned portLONG ) 9600,
( unsigned portLONG ) 19200,
( unsigned portLONG ) 38400UL,
( unsigned portLONG ) 57600UL,
( unsigned portLONG ) 115200UL
};
typedef struct xCOM_PORT
{
unsigned portSHORT sPort; /* comm port address eg. 0x3f8 */
unsigned portCHAR ucIRQ; /* comm IRQ eg. 3 */
/* Next two fields used for setting up the IRQ routine and
* (un)masking the interrupt in certain circumstances.
*/
unsigned portSHORT usIRQVector;
unsigned portCHAR 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 portSHORT usTransmitHoldReg;
unsigned portSHORT usReceiveDataRegister;
unsigned portSHORT usBaudRateDivisorLow;
unsigned portSHORT usBaudRateDivisorHigh;
unsigned portSHORT usInterruptEnableReg;
unsigned portSHORT usInterruptIDReg;
unsigned portSHORT usFIFOCtrlReg;
unsigned portSHORT usLineCtrlReg;
unsigned portSHORT usModemCtrlReg;
unsigned portSHORT usLineStatusReg;
unsigned portSHORT usModemStatusReg;
unsigned portSHORT usSCRReg;
unsigned portSHORT us8259InterruptServiceReg;
unsigned portSHORT 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, portCHAR *pcRxedChar, portTickType xBlockTime );
portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, portCHAR cOutChar, portTickType xBlockTime );
portBASE_TYPE xSerialWaitForSemaphore( xComPortHandle xPort );
static void prvSetupPortHardware( xComPort *pxPort, eCOMPort ePort, eBaud eWantedBaud, eParity eWantedParity, eDataBits eWantedDataBits, eStopBits eWantedStopBits );
static portSHORT 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( portCHAR ) );
pxPort->xCharsForTx = xQueueCreate( uxBufferLength, ( unsigned portBASE_TYPE ) sizeof( portCHAR ) );
/* 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 )
{
portSHORT sIn;
unsigned portLONG ulDivisor;
unsigned portCHAR ucDivisorLow;
unsigned portCHAR ucDivisorHigh;
unsigned portCHAR 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 portCHAR ) ulDivisor & ( unsigned portCHAR ) 0xff;
ucDivisorHigh = ( unsigned portCHAR ) ( ( ( unsigned portSHORT ) 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 portSHORT sComPortISR( const xComPort * const pxPort )
{
portSHORT sInterruptID;
portCHAR cIn, cOut;
portBASE_TYPE xTaskWokenByPost = pdFALSE, xAnotherTaskWokenByPost = pdFALSE, xTaskWokenByTx = 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 = ( portCHAR ) portINPUT_BYTE( pxPort->usReceiveDataRegister );
xTaskWokenByPost = xQueueSendFromISR( pxPort->xRxedChars, &cIn, xTaskWokenByPost );
/* 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();
xAnotherTaskWokenByPost = xSemaphoreGiveFromISR( pxPort->xTestSem, xAnotherTaskWokenByPost );
} 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 = ( portCHAR ) portINPUT_BYTE( pxPort->usReceiveDataRegister );
xTaskWokenByPost = xQueueSendFromISR( pxPort->xRxedChars, &cIn, xTaskWokenByPost );
/* 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();
xAnotherTaskWokenByPost = xSemaphoreGiveFromISR( pxPort->xTestSem, xAnotherTaskWokenByPost );
} while( portINPUT_BYTE( pxPort->usLineStatusReg ) & 0x01 );
break;
case 0x02: /* serTRANSMIT_HOLD_EMPTY_INT */
if( xQueueReceiveFromISR( pxPort->xCharsForTx, &cOut, &xTaskWokenByTx ) != pdTRUE )
{
/* Queue empty, nothing to send */
vInterruptOff( pxPort, serTRANSMIT_HOLD_EMPTY_INT);
}
else
{
portOUTPUT_BYTE( pxPort->usTransmitHoldReg, ( portSHORT ) 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. */
if( xTaskWokenByPost || xAnotherTaskWokenByPost || xTaskWokenByTx )
{
return pdTRUE;
}
else
{
return pdFALSE;
}
}
/*-----------------------------------------------------------*/
portBASE_TYPE xSerialGetChar( xComPortHandle pxPort, portCHAR *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, portCHAR 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 portCHAR * const pcString, unsigned portSHORT usStringLength )
{
portCHAR * pcNextChar;
const portTickType xNoBlock = ( portTickType ) 0;
/* Stop warnings. */
( void ) usStringLength;
pcNextChar = ( portCHAR * ) 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();
}