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Add FreeRTOS-Plus directory.
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Richard Barry
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FreeRTOS/Demo/MB96350_Softune_Dice_Kit/main.c
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FreeRTOS/Demo/MB96350_Softune_Dice_Kit/main.c
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/*
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FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* FreeRTOS tutorial books are available in pdf and paperback. *
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* Complete, revised, and edited pdf reference manuals are also *
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* available. *
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* *
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* Purchasing FreeRTOS documentation will not only help you, by *
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* ensuring you get running as quickly as possible and with an *
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* in-depth knowledge of how to use FreeRTOS, it will also help *
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* the FreeRTOS project to continue with its mission of providing *
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* professional grade, cross platform, de facto standard solutions *
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* for microcontrollers - completely free of charge! *
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* *
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* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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* *
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* Thank you for using FreeRTOS, and thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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>>>NOTE<<< The modification to the GPL is included to allow you to
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distribute a combined work that includes FreeRTOS without being obliged to
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provide the source code for proprietary components outside of the FreeRTOS
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kernel. FreeRTOS is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong? *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, training, latest information,
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license and contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool.
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Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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the code with commercial support, indemnification, and middleware, under
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the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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provide a safety engineered and independently SIL3 certified version under
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the SafeRTOS brand: http://www.SafeRTOS.com.
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*/
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/*****
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*
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* See http://www.freertos.org/Documentation/FreeRTOS-documentation-and-book.html
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* for an introductory guide to using real time kernels, and FreeRTOS in
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* particular.
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*
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*****
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*
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* The DICE-KIT-16FX has two 7 segment displays and two buttons that can
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* generate interrupts. This example uses this IO as follows:
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*
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*
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* - Left 7 segment display -
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*
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* 7 'flash' tasks are created, each of which toggles a single segment of the
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* left display. Each task executes at a fixed frequency, with a different
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* frequency being used by each task.
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*
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* When button SW2 is pressed an interrupt is generated that wakes up a 'dice'
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* task. The dice task suspends the 7 tasks that are accessing the left display
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* before simulating a dice being thrown by generating a random number between
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* 1 and 6. After the number has been generated the task sleeps for 5 seconds,
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* if SW2 is pressed again within the 5 seconds another random number is
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* generated, if SW2 is not pressed within the 5 seconds then the 7 tasks are
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* un-suspended and will once again toggle the segments of the left hand display.
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*
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*
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* - Right 7 segment display -
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*
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* Control of the right side 7 segment display is very similar to that of the
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* left, except co-routines are used to toggle the segments instead of tasks,
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* and button SW3 is used instead of SW2.
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*
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*
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* - Notes -
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*
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* Only one dice task is actually defined. Two instances of this single
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* definition are created, the first to simulate a dice being thrown on the left
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* display, and the other to simulate a dice being thrown on the right display.
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* The task parameter is used to let the dice tasks know which display to
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* control.
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*
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* Both dice tasks and the flash tasks operate completely independently under
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* the control of FreeRTOS. 11 tasks and 7 co-routines are created in total,
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* including the idle task.
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*
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* The co-routines all execute within a single low priority task.
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*
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*
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*
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* When this demo is executing as expected:
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*
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* + Every segment of both displays will toggle at a fixed frequency - with each
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* segment using a different frequency.
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* + When a button is pushed the segment toggling will temporarily stop and the
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* dice 'throw' will start whereby the display will show a fast changing random
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* number for a few seconds before the dice value is chosen and displayed.
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* + If the button is not pushed again within five seconds of the dice value being
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* displayed the segment toggling will commence again.
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*
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*****/
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "Task.h"
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/* Demo includes. */
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#include "DiceTask.h"
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#include "ParTest.h"
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#include "Flash.h"
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/* The priority at which the dice task execute. */
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#define mainDICE_PRIORITY ( tskIDLE_PRIORITY + 2 )
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/*
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* Sets up the MCU IO for the 7 segment displays and the button inputs.
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*/
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static void prvSetupHardware( void );
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/*
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* The function that creates the flash tasks and co-routines (the tasks and
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* co-routines that toggle the 7 segment display segments.
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*/
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extern vCreateFlashTasksAndCoRoutines( void );
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/*-----------------------------------------------------------*/
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void main( void )
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{
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/* Setup the MCU IO. */
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prvSetupHardware();
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/* Create the tasks and co-routines that toggle the display segments. */
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vCreateFlashTasksAndCoRoutines();
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/* Create a 'dice' task to control the left hand display. */
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xTaskCreate( vDiceTask, ( signed char * ) "Dice1", configMINIMAL_STACK_SIZE, ( void * ) configLEFT_DISPLAY, mainDICE_PRIORITY, NULL );
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/* Create a 'dice' task to control the right hand display. */
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xTaskCreate( vDiceTask, ( signed char * ) "Dice2", configMINIMAL_STACK_SIZE, ( void * ) configRIGHT_DISPLAY, mainDICE_PRIORITY, NULL );
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/* Start the scheduler running. */
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vTaskStartScheduler();
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/* If this loop is executed then there was insufficient heap memory for the
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idle task to be created - causing vTaskStartScheduler() to return. */
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while( 1 );
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}
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/*-----------------------------------------------------------*/
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static void prvSetupHardware( void )
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{
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/* Setup interrupt hardware - interrupts are kept disabled for now to
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prevent any interrupts attempting to cause a context switch before the
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scheduler has been started. */
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InitIrqLevels();
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portDISABLE_INTERRUPTS();
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__set_il( 7 );
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/* Set Port3 as output (7Segment Display). */
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DDR03 = 0xff;
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/* Use Port 5 as I/O-Port. */
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ADER1 = 0;
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PDR05 = 0x7f;
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/* Set Port5 as output (7Segment Display). */
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DDR05 = 0xff;
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/* Disable inputs on the following ports. */
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PIER02 = 0x00;
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PDR02 = 0x00;
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DDR02 = 0xff;
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PIER03 = 0x00;
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PDR03 = 0xff;
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PIER05 = 0x00;
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PDR05 = 0x00;
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PIER06 = 0x00;
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PDR06 = 0x00;
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DDR06 = 0xff;
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/* Enable P00_0/INT8 and P00_1/INT9 as input. */
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PIER00 = 0x03;
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/* Enable external interrupt 8. */
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PIER00_IE0 = 1;
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/* LB0, LA0 = 11 -> falling edge. */
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ELVRL1_LB8 = 1;
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ELVRL1_LA8 = 1;
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/* Reset and enable the interrupt request. */
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EIRR1_ER8 = 0;
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ENIR1_EN8 = 1;
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/* Enable external interrupt 9. */
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PIER00_IE1 = 1;
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/* LB1, LA1 = 11 -> falling edge. */
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ELVRL1_LB9 = 1;
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ELVRL1_LA9 = 1;
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/* Reset and enable the interrupt request. */
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EIRR1_ER9 = 0;
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ENIR1_EN9 = 1;
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}
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