/* | |
FreeRTOS V7.4.2 - Copyright (C) 2013 Real Time Engineers Ltd. | |
FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT | |
http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
*************************************************************************** | |
* * | |
* 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 Real Time Engineers Ltd., 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, books, training, latest versions, | |
license and Real Time Engineers Ltd. contact details. | |
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
including FreeRTOS+Trace - an indispensable productivity tool, and our new | |
fully thread aware and reentrant UDP/IP stack. | |
http://www.OpenRTOS.com - 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.SafeRTOS.com - High Integrity Systems also provide a safety | |
engineered and independently SIL3 certified version for use in safety and | |
mission critical applications that require provable dependability. | |
*/ | |
/* | |
* Creates all the demo application tasks, then starts the scheduler. | |
* | |
* 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 on board LED. Should any task contain an error at any time | |
* the LED toggle rate will change from 3 seconds to 500ms. | |
* | |
* NOTE: The demo application includes tasks that send and receive characters | |
* over the UART. The characters sent by one task are received by another - | |
* with an error condition being flagged should any characters be missed or | |
* received out of order. A loopback connector is required on the 9way D socket | |
* for this mechanism to operation (pins 2 and 3 the socket should be connected | |
* together - a paper clip is normally sufficient). | |
* | |
*/ | |
/* Standard includes. */ | |
#include <stdlib.h> | |
#include <string.h> | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
/* Demo application includes. */ | |
#include "partest.h" | |
#include "flash.h" | |
#include "integer.h" | |
#include "PollQ.h" | |
#include "comtest2.h" | |
#include "semtest.h" | |
#include "flop.h" | |
#include "dynamic.h" | |
#include "BlockQ.h" | |
#include "serial.h" | |
#include "demoGpio.h" | |
#include "7seg.h" | |
#include "RegTest.h" | |
/*-----------------------------------------------------------*/ | |
/* Constants for the ComTest tasks. */ | |
#define mainCOM_TEST_BAUD_RATE ( ( unsigned long ) 115200 ) | |
#define mainCOM_TEST_LED ( 5 ) | |
/* 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 mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 4 ) | |
#define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 ) | |
#define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 ) | |
#define main7SEG_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 ) | |
/* The rate at which the on board LED will toggle when there is/is not an | |
error. */ | |
#define mainNO_ERROR_FLASH_PERIOD ( ( portTickType ) 3000 / portTICK_RATE_MS ) | |
#define mainERROR_FLASH_PERIOD ( ( portTickType ) 500 / portTICK_RATE_MS ) | |
#define mainON_BOARD_LED_BIT ( ( unsigned long ) 7 ) | |
/* The size of the memory blocks allocated by the vMemCheckTask() task. */ | |
#define mainMEM_CHECK_SIZE_1 ( ( size_t ) 51 ) | |
#define mainMEM_CHECK_SIZE_2 ( ( size_t ) 52 ) | |
#define mainMEM_CHECK_SIZE_3 ( ( size_t ) 151 ) | |
/*-----------------------------------------------------------*/ | |
/* | |
* Checks that all the demo application tasks are still executing without error | |
* - as described at the top of the file. | |
*/ | |
static long 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 Olimex demo board. This includes | |
* setup for the I/O, system clock, and access timings. | |
*/ | |
static void prvSetupHardware( void ); | |
/*-----------------------------------------------------------*/ | |
/* | |
* Starts all the other tasks, then starts the scheduler. | |
*/ | |
int main( void ) | |
{ | |
/* Setup the hardware for use with the Xilinx evaluation 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 ); | |
vStartSemaphoreTasks( mainSEM_TEST_PRIORITY ); | |
vStartDynamicPriorityTasks(); | |
vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY ); | |
vStart7SegTasks( main7SEG_TASK_PRIORITY ); | |
vStartRegTestTasks(); | |
/* Start the check task - which is defined in this file. */ | |
xTaskCreate( vErrorChecks, ( signed char * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL ); | |
/* Now all the tasks have been started - start the scheduler. */ | |
vTaskStartScheduler(); | |
/* Should never reach here! */ | |
for( ;; ); | |
} | |
/*-----------------------------------------------------------*/ | |
static void vErrorChecks( void *pvParameters ) | |
{ | |
portTickType xDelayPeriod = mainNO_ERROR_FLASH_PERIOD; | |
/* Just to stop compiler warnings. */ | |
( 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. */ | |
for( ;; ) | |
{ | |
/* Delay until it is time to execute again. */ | |
vTaskDelay( xDelayPeriod ); | |
/* Check all the standard demo application tasks are executing without | |
error. */ | |
if( prvCheckOtherTasksAreStillRunning() != pdPASS ) | |
{ | |
/* An error has been detected in one of the tasks - flash faster. */ | |
xDelayPeriod = mainERROR_FLASH_PERIOD; | |
} | |
/* The toggle rate of the LED depends on how long this task delays for. | |
An error reduces the delay period and so increases the toggle rate. */ | |
vParTestToggleLED( mainON_BOARD_LED_BIT ); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
static void prvSetupHardware( void ) | |
{ | |
/* Initialise LED outputs. */ | |
vParTestInitialise(); | |
} | |
/*-----------------------------------------------------------*/ | |
static long prvCheckOtherTasksAreStillRunning( void ) | |
{ | |
long 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() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
if( xAreComTestTasksStillRunning() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
if( xArePollingQueuesStillRunning() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
if( xAreSemaphoreTasksStillRunning() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
if( xAreDynamicPriorityTasksStillRunning() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
if( xAreBlockingQueuesStillRunning() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
if( xAreRegTestTasksStillRunning() != pdTRUE ) | |
{ | |
lReturn = pdFAIL; | |
} | |
return lReturn; | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName ) | |
{ | |
/* This function will be called if a task overflows its stack. Inspect | |
pxCurrentTCB to find the offending task if the overflow was sever enough | |
to corrupt the pcTaskName parameter. */ | |
vParTestSetLED( 4, 1 ); | |
for( ;; ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationMallocFailedHook( void ) | |
{ | |
/* This function will be called if a call to pvPortMalloc() fails to return | |
the requested memory. pvPortMalloc() is called internally by the scheduler | |
whenever a task, queue or semaphore is created. */ | |
vParTestSetLED( 4, 1 ); | |
for( ;; ); | |
} | |
/*-----------------------------------------------------------*/ | |
/* Provide an exit function to prevent a whole load of standard library functions | |
being brought into the build. */ | |
void exit( int status ) | |
{ | |
for( ;; ); | |
} | |