lololabricole wrote on Monday, November 28, 2011:
Hello,
I’m currently discovering RTOS for a school project and I am trying to implement a unique simple task printing a Hello word each 100 ms. Once I will be able to do that, hope I will be able to begin my project…
Only PB : my task looks like beeing never starting.
I’ve set the heap size to 40000 ( it’s useless but this is a way to be sure it is not the PB).
My xTaskCreate function returns 1 and my code enter the scheduler without leaving it - as expected.
I am using a freescale MCF5282 evaluation board and wodewarrior IDE.
Here is my code, I’m sure it is a stupid mistake, but I would be very glad if someone could help me.
main.c
/* Standard includes. */
#include "support_common.h"
#include <stdio.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "semphr.h"
/*-----------------------------------------------------------*/
//prototypes
static void prvSetupHardware( void );
static void myTask1( void *pvParameters );
/*-----------------------------------------------------------*/
int main( void )
{
portBASE_TYPE creation_return;
xTaskHandle xHandleTask1;
printf("\r\nEntering main function ... \n\r");
/* Setup the hardware */
prvSetupHardware();
/* Start the reg test tasks - defined in this file. */
if(xTaskCreate( myTask1, ( signed portCHAR * ) "Task1", 50, NULL, tskIDLE_PRIORITY+10, &xHandleTask1)==pdPASS)
printf("Task 1 was properly created\n\r");
/* Start the scheduler. */
printf("Starting scheduler...\n\r");
vTaskStartScheduler();
/* Should never get there */
printf("Error. Scheduler exited.\n\r");
for( ;; );
}
/*-----------------------------------------------------------*/
static void myTask1( void *pvParameters )
{
portTickType lastTimeRun;
for(;;)
{
vTaskDelayUntil( &lastTimeRun, 100 );
printf("Hello world !\n\r");
}
}
/*-----------------------------------------------------------*/
void prvSetupHardware( void )
{
extern void mcf5xxx_wr_cacr( unsigned portLONG );
portDISABLE_INTERRUPTS();
/* Enable the cache. */
//mcf5xxx_wr_cacr( MCF5XXX_CACR_CENB | MCF5XXX_CACR_CINV | MCF5XXX_CACR_DISD | MCF5XXX_CACR_CEIB | MCF5XXX_CACR_CLNF_00 );
asm volatile( "NOP" ); /* As per errata. */
/* Multiply 8Mhz reference crystal by 8 to achieve system clock of 64Mhz. */
MCF_CLOCK_SYNCR = MCF_CLOCK_SYNCR_MFD( 2 );
/* Wait for PLL to lock. */
while( !( MCF_CLOCK_SYNSR & MCF_CLOCK_SYNSR_LOCK ) )
{
__asm__ volatile ( "NOP" );
}
}
/*-----------------------------------------------------------*/
FreeRTOSconfig file
/*
FreeRTOS V7.0.2 - Copyright (C) 2011 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!
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 "MCF5282.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 0
#define configUSE_TICK_HOOK 0
#define configCPU_CLOCK_HZ ( ( unsigned long ) 64000000 )
#define configTICK_RATE_HZ ( ( portTickType ) 100 )
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 190 )
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 40000 ) )
#define configMAX_TASK_NAME_LEN ( 12 )
#define configUSE_TRACE_FACILITY 1
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 0
#define configUSE_CO_ROUTINES 0
#define configUSE_MUTEXES 1
#define configCHECK_FOR_STACK_OVERFLOW 0
#define configUSE_RECURSIVE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 10
#define configUSE_COUNTING_SEMAPHORES 0
#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 6 )
#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 0
#define INCLUDE_vTaskSuspend 0
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
#define INCLUDE_uxTaskGetStackHighWaterMark 1
#define configYIELD_INTERRUPT_VECTOR 16UL
#define configKERNEL_INTERRUPT_PRIORITY 1
#define configMAX_SYSCALL_INTERRUPT_PRIORITY 4
void vApplicationSetupInterrupts( void );
#endif /* FREERTOS_CONFIG_H */