/* FreeRTOS V8.1.2 - 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! */ /***** * * 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; }