/*
    FreeRTOS V6.0.4 - Copyright (C) 2010 Real Time Engineers Ltd.

    ***************************************************************************
    *                                                                         *
    * If you are:                                                             *
    *                                                                         *
    *    + New to FreeRTOS,                                                   *
    *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
    *    + Looking for basic training,                                        *
    *    + Wanting to improve your FreeRTOS skills and productivity           *
    *                                                                         *
    * then take a look at the FreeRTOS eBook                                  *
    *                                                                         *
    *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
    *                  http://www.FreeRTOS.org/Documentation                  *
    *                                                                         *
    * A pdf reference manual is also available.  Both are usually delivered   *
    * to your inbox within 20 minutes to two hours when purchased between 8am *
    * and 8pm GMT (although please allow up to 24 hours in case of            *
    * exceptional circumstances).  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 exception 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.
*/

/* Scheduler include files. */
#include "FreeRTOS.h"
#include "task.h"

/* Demo file headers. */
#include "regtest.h"

/*
 * Test tasks that sets registers to known values, then checks to ensure the
 * values remain as expected.  Test 1 and test 2 use different values.
 */
static void prvRegisterCheck1( void *pvParameters );
static void prvRegisterCheck2( void *pvParameters );

/* Set to a non zero value should an error be found. */
portBASE_TYPE xRegTestError = pdFALSE;

/*-----------------------------------------------------------*/

void vStartRegTestTasks( void )
{
	xTaskCreate( prvRegisterCheck1, "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
	xTaskCreate( prvRegisterCheck2, "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );		
}
/*-----------------------------------------------------------*/

portBASE_TYPE xAreRegTestTasksStillRunning( void )
{
portBASE_TYPE xReturn;

	/* If a register was found to contain an unexpected value then the
	xRegTestError variable would have been set to a non zero value. */
	if( xRegTestError == pdFALSE )
	{
		xReturn = pdTRUE;
	}
	else
	{
		xReturn = pdFALSE;
	}
	
	return xReturn;
}
/*-----------------------------------------------------------*/

static void prvRegisterCheck1( void *pvParameters )
{
	( void ) pvParameters;

	for( ;; )
	{
		asm(	"LDI	r31,	5"		);		
		asm( 	"MOV	r0,		r31"	);
		asm(	"LDI	r31,	6"		);
		asm( 	"MOV	r1,		r31"	);
		asm(	"LDI	r31,	7"		);
		asm( 	"MOV	r2,		r31"	);
		asm(	"LDI	r31,	8"		);
		asm( 	"MOV	r3,		r31"	);
		asm(	"LDI	r31,	9"		);
		asm( 	"MOV	r4,		r31"	);
		asm(	"LDI	r31,	10"		);
		asm( 	"MOV	r5,		r31"	);
		asm(	"LDI	r31,	11"		);
		asm( 	"MOV	r6,		r31"	);
		asm(	"LDI	r31,	12"		);
		asm( 	"MOV	r7,		r31"	);
		asm(	"LDI	r31,	13"		);
		asm( 	"MOV	r8,		r31"	);
		asm(	"LDI	r31,	14"		);
		asm( 	"MOV	r9,		r31"	);
		asm(	"LDI	r31,	15"		);
		asm( 	"MOV	r10,	r31"	);
		asm(	"LDI	r31,	16"		);
		asm( 	"MOV	r11,	r31"	);
		asm(	"LDI	r31,	17"		);
		asm( 	"MOV	r12,	r31"	);
		asm(	"LDI	r31,	18"		);
		asm( 	"MOV	r13,	r31"	);
		asm(	"LDI	r31,	19"		);
		asm( 	"MOV	r14,	r31"	);
		asm(	"LDI	r31,	20"		);
		asm( 	"MOV	r15,	r31"	);
		asm(	"LDI	r16,	21"		);
		asm(	"LDI	r17,	22"		);
		asm(	"LDI	r18,	23"		);
		asm(	"LDI	r19,	24"		);
		asm(	"LDI	r20,	25"		);
		asm(	"LDI	r21,	26"		);
		asm(	"LDI	r22,	27"		);
		asm(	"LDI	r23,	28"		);
		asm(	"LDI	r24,	29"		);
		asm(	"LDI	r25,	30"		);
		asm(	"LDI	r26,	31"		);
		asm(	"LDI	r27,	32"		);
		asm(	"LDI	r30,	33"		);

		asm(	"LDI	r31,	5"			);
		asm(	"CPSE	r31,	r0"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	6"			);
		asm(	"CPSE	r31,	r1"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	7"			);
		asm(	"CPSE	r31,	r2"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	8"			);
		asm(	"CPSE	r31,	r3"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	9"			);
		asm(	"CPSE	r31,	r4"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	10"			);
		asm(	"CPSE	r31,	r5"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	11"			);
		asm(	"CPSE	r31,	r6"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	12"			);
		asm(	"CPSE	r31,	r7"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	13"			);
		asm(	"CPSE	r31,	r8"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	14"			);
		asm(	"CPSE	r31,	r9"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	15"			);
		asm(	"CPSE	r31,	r10"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	16"			);
		asm(	"CPSE	r31,	r11"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	17"			);
		asm(	"CPSE	r31,	r12"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	18"			);
		asm(	"CPSE	r31,	r13"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	19"			);
		asm(	"CPSE	r31,	r14"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	20"			);
		asm(	"CPSE	r31,	r15"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	21"			);
		asm(	"CPSE	r31,	r16"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	22"			);
		asm(	"CPSE	r31,	r17"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	23"			);
		asm(	"CPSE	r31,	r18"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	24"			);
		asm(	"CPSE	r31,	r19"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	25"			);
		asm(	"CPSE	r31,	r20"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	26"			);
		asm(	"CPSE	r31,	r21"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	27"			);
		asm(	"CPSE	r31,	r22"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	28"			);
		asm(	"CPSE	r31,	r23"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	29"			);
		asm(	"CPSE	r31,	r24"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	30"			);
		asm(	"CPSE	r31,	r25"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	31"			);
		asm(	"CPSE	r31,	r26"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	32"			);
		asm(	"CPSE	r31,	r27"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	33"			);
		asm(	"CPSE	r31,	r30"		);
		asm(	"STS	xRegTestError, r0"	);
	}
}
/*-----------------------------------------------------------*/

static void prvRegisterCheck2( void *pvParameters )
{
	( void ) pvParameters;

	for( ;; )
	{
		asm(	"LDI	r31,	1"		);		
		asm( 	"MOV	r0,		r31"	);
		asm(	"LDI	r31,	2"		);
		asm( 	"MOV	r1,		r31"	);
		asm(	"LDI	r31,	3"		);
		asm( 	"MOV	r2,		r31"	);
		asm(	"LDI	r31,	4"		);
		asm( 	"MOV	r3,		r31"	);
		asm(	"LDI	r31,	5"		);
		asm( 	"MOV	r4,		r31"	);
		asm(	"LDI	r31,	6"		);
		asm( 	"MOV	r5,		r31"	);
		asm(	"LDI	r31,	7"		);
		asm( 	"MOV	r6,		r31"	);
		asm(	"LDI	r31,	8"		);
		asm( 	"MOV	r7,		r31"	);
		asm(	"LDI	r31,	9"		);
		asm( 	"MOV	r8,		r31"	);
		asm(	"LDI	r31,	10"		);
		asm( 	"MOV	r9,		r31"	);
		asm(	"LDI	r31,	11"		);
		asm( 	"MOV	r10,	r31"	);
		asm(	"LDI	r31,	12"		);
		asm( 	"MOV	r11,	r31"	);
		asm(	"LDI	r31,	13"		);
		asm( 	"MOV	r12,	r31"	);
		asm(	"LDI	r31,	14"		);
		asm( 	"MOV	r13,	r31"	);
		asm(	"LDI	r31,	15"		);
		asm( 	"MOV	r14,	r31"	);
		asm(	"LDI	r31,	16"		);
		asm( 	"MOV	r15,	r31"	);
		asm(	"LDI	r16,	17"		);
		asm(	"LDI	r17,	18"		);
		asm(	"LDI	r18,	19"		);
		asm(	"LDI	r19,	20"		);
		asm(	"LDI	r20,	21"		);
		asm(	"LDI	r21,	22"		);
		asm(	"LDI	r22,	23"		);
		asm(	"LDI	r23,	24"		);
		asm(	"LDI	r24,	25"		);
		asm(	"LDI	r25,	26"		);
		asm(	"LDI	r26,	27"		);
		asm(	"LDI	r27,	28"		);
		asm(	"LDI	r30,	29"		);

		asm(	"LDI	r31,	1"			);
		asm(	"CPSE	r31,	r0"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	2"			);
		asm(	"CPSE	r31,	r1"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	3"			);
		asm(	"CPSE	r31,	r2"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	4"			);
		asm(	"CPSE	r31,	r3"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	5"			);
		asm(	"CPSE	r31,	r4"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	6"			);
		asm(	"CPSE	r31,	r5"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	7"			);
		asm(	"CPSE	r31,	r6"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	8"			);
		asm(	"CPSE	r31,	r7"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	9"			);
		asm(	"CPSE	r31,	r8"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	10"			);
		asm(	"CPSE	r31,	r9"			);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	11"			);
		asm(	"CPSE	r31,	r10"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	12"			);
		asm(	"CPSE	r31,	r11"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	13"			);
		asm(	"CPSE	r31,	r12"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	14"			);
		asm(	"CPSE	r31,	r13"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	15"			);
		asm(	"CPSE	r31,	r14"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	16"			);
		asm(	"CPSE	r31,	r15"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	17"			);
		asm(	"CPSE	r31,	r16"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	18"			);
		asm(	"CPSE	r31,	r17"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	19"			);
		asm(	"CPSE	r31,	r18"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	20"			);
		asm(	"CPSE	r31,	r19"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	21"			);
		asm(	"CPSE	r31,	r20"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	22"			);
		asm(	"CPSE	r31,	r21"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	23"			);
		asm(	"CPSE	r31,	r22"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	24"			);
		asm(	"CPSE	r31,	r23"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	25"			);
		asm(	"CPSE	r31,	r24"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	26"			);
		asm(	"CPSE	r31,	r25"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	27"			);
		asm(	"CPSE	r31,	r26"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	28"			);
		asm(	"CPSE	r31,	r27"		);
		asm(	"STS	xRegTestError, r0"	);
		asm(	"LDI	r31,	29"			);
		asm(	"CPSE	r31,	r30"		);
		asm(	"STS	xRegTestError, r0"	);
	}
}