/*
    FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd. 
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
     *    platform software that has become a de facto standard.             *
     *                                                                       *
     *    Help yourself get started quickly and support the FreeRTOS         *
     *    project by purchasing a FreeRTOS tutorial book, reference          *
     *    manual, or both from: http://www.FreeRTOS.org/Documentation        *
     *                                                                       *
     *    Thank you!                                                         *
     *                                                                       *
    ***************************************************************************

    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.  Full license text is available from the following
    link: http://www.freertos.org/a00114.html

    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, a DOS
    compatible FAT file system, and our tiny thread aware UDP/IP stack.

    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
    Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and middleware.

    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.

    1 tab == 4 spaces!
*/

#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_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.
 * http://www.freertos.org/a00110.html
 *
 * The bottom of this file contains some constants specific to running the UDP
 * stack in this demo.  Constants specific to FreeRTOS+UDP itself (rather than
 * the demo) are contained in FreeRTOSIPConfig.h.
 *----------------------------------------------------------*/

#define configUSE_PREEMPTION			1
#define configMAX_PRIORITIES			( ( unsigned portBASE_TYPE ) 7 )
#define configTICK_RATE_HZ				( 1000 ) /* In this non-real time simulated environment the tick frequency has to be at least a multiple of the Win32 tick frequency, and therefore very slow. */
#define configMINIMAL_STACK_SIZE		( ( unsigned short ) 60 ) /* In this simulated case, the stack only has to hold one small structure as the real stack is part of the Win32 thread. */
#define configTOTAL_HEAP_SIZE			( ( size_t ) ( 32U * 1024U ) )
#define configMAX_TASK_NAME_LEN			( 7 )
#define configUSE_TRACE_FACILITY		1
#define configUSE_16_BIT_TICKS			0
#define configIDLE_SHOULD_YIELD			1
#define configUSE_CO_ROUTINES 			0
#define configUSE_MUTEXES				1
#define configUSE_RECURSIVE_MUTEXES		1
#define configQUEUE_REGISTRY_SIZE		0
#define configUSE_APPLICATION_TASK_TAG	0
#define configUSE_COUNTING_SEMAPHORES	1
#define configUSE_ALTERNATIVE_API		0

/* Hook function related definitions. */
#define configUSE_TICK_HOOK				0
#define configUSE_IDLE_HOOK				1
#define configUSE_MALLOC_FAILED_HOOK	1
#define configCHECK_FOR_STACK_OVERFLOW	0 /* Not applicable to the Win32 port. */

/* Software timer related definitions. */
#define configUSE_TIMERS				1
#define configTIMER_TASK_PRIORITY		( configMAX_PRIORITIES - 1 )
#define configTIMER_QUEUE_LENGTH		5
#define configTIMER_TASK_STACK_DEPTH	( configMINIMAL_STACK_SIZE * 2 )

/* Run time stats gathering definitions. */
unsigned long ulGetRunTimeCounterValue( void );
void vConfigureTimerForRunTimeStats( void );
#define configGENERATE_RUN_TIME_STATS	1
#define portCONFIGURE_TIMER_FOR_RUN_TIME_STATS() vConfigureTimerForRunTimeStats()
#define portGET_RUN_TIME_COUNTER_VALUE() ulGetRunTimeCounterValue()

/* Co-routine definitions. */
#define configUSE_CO_ROUTINES 			0
#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				1
#define INCLUDE_vTaskDelayUntil				1
#define INCLUDE_vTaskDelay					1
#define INCLUDE_uxTaskGetStackHighWaterMark	1
#define INCLUDE_xTaskGetSchedulerState		1
#define INCLUDE_xTimerGetTimerTaskHandle	0
#define INCLUDE_xTaskGetIdleTaskHandle		0
#define INCLUDE_xQueueGetMutexHolder		1

/* This demo makes use of one or more example stats formatting functions.  These
format the raw data provided by the uxTaskGetSystemState() function in to human
readable ASCII form.  See the notes in the implementation of vTaskList() within 
FreeRTOS/Source/tasks.c for limitations. */
#define configUSE_STATS_FORMATTING_FUNCTIONS	1

/* Assert call defined for debug builds. */
#ifdef _DEBUG
	extern void vAssertCalled( const char *pcFile, unsigned long ulLine );
	#define configASSERT( x ) if( ( x ) == 0 ) vAssertCalled( __FILE__, __LINE__ )
#endif /* _DEBUG */



/* Application specific definitions follow. **********************************/

/* The UDP port to use for incoming command inputs.  The outgoing port is
set to ( configUDP_CLI_PORT_NUMBER + 1 ). */
#define configUDP_CLI_PORT_NUMBER	5001

/* The size of the global output buffer that is available for use when there
are multiple command interpreters running at once (for example, one on a UART
and one on TCP/IP).  This is done to prevent an output buffer being defined by
each implementation - which would waste RAM.  In this case, there is only one
command interpreter running, and it has its own local output buffer, so the
global buffer is just set to be one byte long as it is not used and should not
take up unnecessary RAM. */
#define configCOMMAND_INT_MAX_OUTPUT_SIZE 1

#endif /* FREERTOS_CONFIG_H */
