/*
    FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.
    All rights reserved

    VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

    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 on 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?".  Have you defined configASSERT()?  *
     *                                                                       *
     *    http://www.FreeRTOS.org/FAQHelp.html                               *
     *                                                                       *
    ***************************************************************************

    ***************************************************************************
     *                                                                       *
     *    FreeRTOS provides completely free yet professionally developed,    *
     *    robust, strictly quality controlled, supported, and cross          *
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     *    is the industry's de facto standard.                               *
     *                                                                       *
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     *                                                                       *
    ***************************************************************************

    ***************************************************************************
     *                                                                       *
     *   Investing in training allows your team to be as productive as       *
     *   possible as early as possible, lowering your overall development    *
     *   cost, and enabling you to bring a more robust product to market     *
     *   earlier than would otherwise be possible.  Richard Barry is both    *
     *   the architect and key author of FreeRTOS, and so also the world's   *
     *   leading authority on what is the world's most popular real time     *
     *   kernel for deeply embedded MCU designs.  Obtaining your training    *
     *   from Richard ensures your team will gain directly from his in-depth *
     *   product knowledge and years of usage experience.  Contact Real Time *
     *   Engineers Ltd to enquire about the FreeRTOS Masterclass, presented  *
     *   by Richard Barry:  http://www.FreeRTOS.org/contact
     *                                                                       *
    ***************************************************************************

    ***************************************************************************
     *                                                                       *
     *    You are receiving this top quality software for free.  Please play *
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     *                                                                       *
     *    Thank you!                                                         *
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    ***************************************************************************

    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.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
    Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

    http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
    Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS
    licenses offer ticketed support, indemnification and commercial 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!
*/


/*****
 *
 * See http://www.freertos.org/Documentation/FreeRTOS-documentation-and-book.html
 * for an introductory guide to using real time kernels, and FreeRTOS in
 * particular.
 *
 *****
 *
 * The DICE-KIT-16FX has two 7 segment displays and two buttons that can
 * generate interrupts.  This example uses this IO as follows:
 *
 *
 * - Left 7 segment display -
 *
 * 7 'flash' tasks are created, each of which toggles a single segment of the
 * left display.  Each task executes at a fixed frequency, with a different
 * frequency being used by each task.
 *
 * When button SW2 is pressed an interrupt is generated that wakes up a 'dice'
 * task.  The dice task suspends the 7 tasks that are accessing the left display
 * before simulating a dice being thrown by generating a random number between
 * 1 and 6.  After the number has been generated the task sleeps for 5 seconds,
 * if SW2 is pressed again within the 5 seconds another random number is
 * generated, if SW2 is not pressed within the 5 seconds then the 7 tasks are
 * un-suspended and will once again toggle the segments of the left hand display.
 *
 *
 * - Right 7 segment display -
 *
 * Control of the right side 7 segment display is very similar to that of the
 * left, except co-routines are used to toggle the segments instead of tasks,
 * and button SW3 is used instead of SW2.
 *
 *
 * - Notes -
 *
 * Only one dice task is actually defined.  Two instances of this single
 * definition are created, the first to simulate a dice being thrown on the left
 * display, and the other to simulate a dice being thrown on the right display.
 * The task parameter is used to let the dice tasks know which display to
 * control.
 *
 * Both dice tasks and the flash tasks operate completely independently under
 * the control of FreeRTOS.  11 tasks and 7 co-routines are created in total,
 * including the idle task.
 *
 * The co-routines all execute within a single low priority task.
 *
 *
 *
 * When this demo is executing as expected:
 *
 * + Every segment of both displays will toggle at a fixed frequency - with each
 *   segment using a different frequency.
 * + When a button is pushed the segment toggling will temporarily stop and the
 *   dice 'throw' will start whereby the display will show a fast changing random
 *   number for a few seconds before the dice value is chosen and displayed.
 * + If the button is not pushed again within five seconds of the dice value being
 *   displayed the segment toggling will commence again.
 *
 *****/

/* Kernel includes. */
#include "FreeRTOS.h"
#include "Task.h"

/* Demo includes. */
#include "DiceTask.h"
#include "ParTest.h"
#include "Flash.h"

/* The priority at which the dice task execute. */
#define mainDICE_PRIORITY			( tskIDLE_PRIORITY + 2 )

/*
 * Sets up the MCU IO for the 7 segment displays and the button inputs.
 */
static void prvSetupHardware( void );

/*
 * The function that creates the flash tasks and co-routines (the tasks and
 * co-routines that toggle the 7 segment display segments.
 */
extern vCreateFlashTasksAndCoRoutines( void );

/*-----------------------------------------------------------*/

void main( void )
{
	/* Setup the MCU IO. */
	prvSetupHardware();

	/* Create the tasks and co-routines that toggle the display segments. */
	vCreateFlashTasksAndCoRoutines();

	/* Create a 'dice' task to control the left hand display. */
	xTaskCreate( vDiceTask, "Dice1", configMINIMAL_STACK_SIZE, ( void * ) configLEFT_DISPLAY, mainDICE_PRIORITY, NULL );

	/* Create a 'dice' task to control the right hand display. */
	xTaskCreate( vDiceTask, "Dice2", configMINIMAL_STACK_SIZE, ( void * ) configRIGHT_DISPLAY, mainDICE_PRIORITY, NULL );

	/* Start the scheduler running. */
	vTaskStartScheduler();

	/* If this loop is executed then there was insufficient heap memory for the
	idle task to be created - causing vTaskStartScheduler() to return. */
	while( 1 );
}
/*-----------------------------------------------------------*/

static void prvSetupHardware( void )
{
	/* Setup interrupt hardware - interrupts are kept disabled for now to
	prevent any interrupts attempting to cause a context switch before the
	scheduler has been started. */
	InitIrqLevels();
	portDISABLE_INTERRUPTS();
	__set_il( 7 );

	/* Set Port3 as output (7Segment Display). */
	DDR03  = 0xff;

	/* Use Port 5 as I/O-Port. */
	ADER1  = 0;
	PDR05  = 0x7f;

	/* Set Port5 as output (7Segment Display). */
	DDR05  = 0xff;

	/* Disable inputs on the following ports. */
	PIER02 = 0x00;
	PDR02  = 0x00;
	DDR02  = 0xff;
	PIER03 = 0x00;
	PDR03  = 0xff;
	PIER05 = 0x00;
	PDR05  = 0x00;
	PIER06 = 0x00;
	PDR06  = 0x00;
	DDR06  = 0xff;

	/* Enable P00_0/INT8 and P00_1/INT9 as input. */
	PIER00 = 0x03;

	/* Enable external interrupt 8. */
	PIER00_IE0 = 1;

	/* LB0, LA0 = 11 -> falling edge. */
	ELVRL1_LB8 = 1;
	ELVRL1_LA8 = 1;

	/* Reset and enable the interrupt request. */
	EIRR1_ER8 = 0;
	ENIR1_EN8 = 1;

	/* Enable external interrupt 9. */
	PIER00_IE1 = 1;

	/* LB1, LA1 = 11 -> falling edge. */
	ELVRL1_LB9 = 1;
	ELVRL1_LA9 = 1;

	/* Reset and enable the interrupt request. */
	EIRR1_ER9 = 0;
	ENIR1_EN9 = 1;
}