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/*
FreeRTOS.org V5.1.1 - 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.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
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.
*/
/*
NOTE : Tasks run in system mode and the scheduler runs in Supervisor mode.
The processor MUST be in supervisor mode when vTaskStartScheduler is
called. The demo applications included in the FreeRTOS.org download switch
to supervisor mode prior to main being called. If you are not using one of
these demo application projects then ensure Supervisor mode is used.
*/
/*
* Creates all the demo application tasks, then starts the scheduler. The WEB
* documentation provides more details of the demo application tasks.
*
* Main.c also creates a task called "Check". This only executes every three
* 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.
* Each task (other than the "flash" tasks) maintains a unique count that is
* incremented each time the task successfully completes its function. Should
* any error occur within such a task the count is permanently halted. The
* check task inspects the count of each task to ensure it has changed since
* the last time the check task executed. If all the count variables have
* changed all the tasks are still executing error free, and the check task
* toggles the onboard LED. Should any task contain an error at any time
* the LED toggle rate will change from 3 seconds to 500ms.
*
*/
/* Standard includes. */
#include <stdlib.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/* Demo application includes. */
#include "partest.h"
#include "flash.h"
#include "integer.h"
#include "comtest2.h"
#include "serial.h"
#include "PollQ.h"
#include "BlockQ.h"
#include "semtest.h"
#include "dynamic.h"
/*-----------------------------------------------------------*/
/* Constants to setup I/O and processor. */
#define mainTX_ENABLE ( ( unsigned portLONG ) 0x00010000 ) /* UART1. */
#define mainRX_ENABLE ( ( unsigned portLONG ) 0x00040000 ) /* UART1. */
#define mainBUS_CLK_FULL ( ( unsigned portCHAR ) 0x01 )
#define mainLED_TO_OUTPUT ( ( unsigned portLONG ) 0xff0000 )
/* Constants for the ComTest demo application tasks. */
#define mainCOM_TEST_BAUD_RATE ( ( unsigned portLONG ) 115200 )
#define mainCOM_TEST_LED ( 3 )
/* Priorities for the demo application tasks. */
#define mainLED_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
#define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
#define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 4 )
/* Constants used by the "check" task. As described at the head of this file
the check task toggles an LED. The rate at which the LED flashes is used to
indicate whether an error has been detected or not. If the LED toggles every
3 seconds then no errors have been detected. If the rate increases to 500ms
then an error has been detected in at least one of the demo application tasks. */
#define mainCHECK_LED ( 7 )
#define mainNO_ERROR_FLASH_PERIOD ( ( portTickType ) 3000 / portTICK_RATE_MS )
#define mainERROR_FLASH_PERIOD ( ( portTickType ) 500 / portTICK_RATE_MS )
/*-----------------------------------------------------------*/
/*
* Checks that all the demo application tasks are still executing without error
* - as described at the top of the file.
*/
static portLONG prvCheckOtherTasksAreStillRunning( void );
/*
* The task that executes at the highest priority and calls
* prvCheckOtherTasksAreStillRunning(). See the description at the top
* of the file.
*/
static void vErrorChecks( void *pvParameters );
/*
* Configure the processor for use with the Keil demo board. This is very
* minimal as most of the setup is managed by the settings in the project
* file.
*/
static void prvSetupHardware( void );
/*-----------------------------------------------------------*/
/*
* Application entry point:
* Starts all the other tasks, then starts the scheduler.
*/
int main( void )
{
/* Setup the hardware for use with the Keil demo board. */
prvSetupHardware();
/* Start the demo/test application tasks. */
vStartIntegerMathTasks( tskIDLE_PRIORITY );
vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED );
vStartLEDFlashTasks( mainLED_TASK_PRIORITY );
vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
vStartDynamicPriorityTasks();
/* Start the check task - which is defined in this file. This is the task
that periodically checks to see that all the other tasks are executing
without error. */
xTaskCreate( vErrorChecks, "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );
/* Now all the tasks have been started - start the scheduler.
NOTE : Tasks run in system mode and the scheduler runs in Supervisor mode.
The processor MUST be in supervisor mode when vTaskStartScheduler is
called. The demo applications included in the FreeRTOS.org download switch
to supervisor mode prior to main being called. If you are not using one of
these demo application projects then ensure Supervisor mode is used here. */
vTaskStartScheduler();
/* Should never reach here! If you do then there was not enough heap
available for the idle task to be created. */
for( ;; );
}
/*-----------------------------------------------------------*/
static void vErrorChecks( void *pvParameters )
{
portTickType xDelayPeriod = mainNO_ERROR_FLASH_PERIOD;
/* Parameters are not used. */
( void ) pvParameters;
/* Cycle for ever, delaying then checking all the other tasks are still
operating without error. If an error is detected then the delay period
is decreased from mainNO_ERROR_FLASH_PERIOD to mainERROR_FLASH_PERIOD so
the on board LED flash rate will increase.
This task runs at the highest priority. */
for( ;; )
{
/* The period of the delay depends on whether an error has been
detected or not. If an error has been detected then the period
is reduced to increase the LED flash rate. */
vTaskDelay( xDelayPeriod );
if( prvCheckOtherTasksAreStillRunning() != pdPASS )
{
/* An error has been detected in one of the tasks - flash faster. */
xDelayPeriod = mainERROR_FLASH_PERIOD;
}
/* Toggle the LED before going back to wait for the next cycle. */
vParTestToggleLED( mainCHECK_LED );
}
}
/*-----------------------------------------------------------*/
static void prvSetupHardware( void )
{
/* Perform the hardware setup required. This is minimal as most of the
setup is managed by the settings in the project file. */
/* Configure the UART1 pins. All other pins remain at their default of 0. */
PINSEL0 |= mainTX_ENABLE;
PINSEL0 |= mainRX_ENABLE;
/* LED pins need to be output. */
IODIR1 = mainLED_TO_OUTPUT;
/* Setup the peripheral bus to be the same as the PLL output. */
VPBDIV = mainBUS_CLK_FULL;
}
/*-----------------------------------------------------------*/
static portLONG prvCheckOtherTasksAreStillRunning( void )
{
portLONG lReturn = pdPASS;
/* Check all the demo tasks (other than the flash tasks) to ensure
that they are all still running, and that none of them have detected
an error. */
if( xAreIntegerMathsTaskStillRunning() != pdPASS )
{
lReturn = pdFAIL;
}
if( xAreComTestTasksStillRunning() != pdPASS )
{
lReturn = pdFAIL;
}
if( xArePollingQueuesStillRunning() != pdTRUE )
{
lReturn = pdFAIL;
}
if( xAreBlockingQueuesStillRunning() != pdTRUE )
{
lReturn = pdFAIL;
}
if( xAreSemaphoreTasksStillRunning() != pdTRUE )
{
lReturn = pdFAIL;
}
if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
{
lReturn = pdFAIL;
}
return lReturn;
}
/*-----------------------------------------------------------*/
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