git.sur5r.net Git - freertos/blob - Demo/MB96350_Softune_Dice_Kit/DiceTask.c

   1 /*\r
   2         FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.\r
   3 \r
   4         This file is part of the FreeRTOS.org distribution.\r
   5 \r
   6         FreeRTOS.org is free software; you can redistribute it and/or modify\r
   7         it under the terms of the GNU General Public License as published by\r
   8         the Free Software Foundation; either version 2 of the License, or\r
   9         (at your option) any later version.\r
  10 \r
  11         FreeRTOS.org is distributed in the hope that it will be useful,\r
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14         GNU General Public License for more details.\r
  15 \r
  16         You should have received a copy of the GNU General Public License\r
  17         along with FreeRTOS.org; if not, write to the Free Software\r
  18         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
  19 \r
  20         A special exception to the GPL can be applied should you wish to distribute\r
  21         a combined work that includes FreeRTOS.org, without being obliged to provide\r
  22         the source code for any proprietary components.  See the licensing section \r
  23         of http://www.FreeRTOS.org for full details of how and when the exception\r
  24         can be applied.\r
  25 \r
  26     ***************************************************************************\r
  27     ***************************************************************************\r
  28     *                                                                         *\r
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  32     * expedite your project.                                                  *\r
  33     *                                                                         *\r
  34     ***************************************************************************\r
  35     ***************************************************************************\r
  36 \r
  37         Please ensure to read the configuration and relevant port sections of the\r
  38         online documentation.\r
  39 \r
  40         http://www.FreeRTOS.org - Documentation, latest information, license and \r
  41         contact details.\r
  42 \r
  43         http://www.SafeRTOS.com - A version that is certified for use in safety \r
  44         critical systems.\r
  45 \r
  46         http://www.OpenRTOS.com - Commercial support, development, porting, \r
  47         licensing and training services.\r
  48 */\r
  49 \r
  50 #include "FreeRTOS.h"\r
  51 #include "task.h"\r
  52 #include "semphr.h"\r
  53 \r
  54 #define diceMIN    1\r
  55 #define diceMAX    6\r
  56 #define diceRUN_MIN  600000L\r
  57 #define diceRUN_MAX 1200000L\r
  58 \r
  59 #define diceSTATE_STOPPED               0\r
  60 #define diceSTATE_STARTUP               1\r
  61 #define diceSTATE_RUNNING               2\r
  62 \r
  63 #define diceEND_DELAY                   ( 5000 / portTICK_RATE_MS )\r
  64 \r
  65 #define dice7SEG_Value( x )             *( pucDisplayOutput[ x ] )\r
  66 \r
  67 #define prvButtonHit( ucIndex, xTicksToWait ) xSemaphoreTake( xSemaphores[ ucIndex ], xTicksToWait )\r
  68 \r
  69 static const char cDisplaySegments[ 2 ][ 11 ] =\r
  70 {\r
  71         { 0x48, 0xeb, 0x8c, 0x89, 0x2b, 0x19, 0x18, 0xcb, 0x08, 0x09, 0xf7 },\r
  72         { 0xa0, 0xf3, 0xc4, 0xc1, 0x93, 0x89, 0x88, 0xe3, 0x80, 0x81, 0x7f }\r
  73 };\r
  74 \r
  75 static xSemaphoreHandle xSemaphores[ 2 ] = { 0 };\r
  76 \r
  77 extern volatile unsigned char *pucDisplayOutput[ 2 ];\r
  78 \r
  79 /*-----------------------------------------------------------*/\r
  80 \r
  81 void vDiceTask( void *pvParameters )\r
  82 {\r
  83 char cDiceState = diceSTATE_STOPPED;\r
  84 unsigned char ucDiceValue, ucIndex;\r
  85 unsigned long ulDiceRunTime, ulDiceDelay, ulDiceDelayReload;\r
  86 extern void vToggleFlashTaskSuspendState( void );\r
  87 \r
  88         ucIndex = ( unsigned char ) pvParameters;\r
  89         vSemaphoreCreateBinary( xSemaphores[ ucIndex ] );\r
  90         srand( ( unsigned char ) diceRUN_MIN );\r
  91 \r
  92         for( ;; )\r
  93         {\r
  94                 switch( cDiceState )\r
  95                 {\r
  96                         case diceSTATE_STOPPED:\r
  97 \r
  98                                 prvButtonHit( ucIndex, portMAX_DELAY );\r
  99                                 ulDiceRunTime = diceRUN_MIN;                            \r
 100                                 cDiceState = diceSTATE_RUNNING;\r
 101                                 ulDiceDelay = 1;\r
 102                                 ulDiceDelayReload = 1;\r
 103                                 cDiceState = diceSTATE_RUNNING;\r
 104                                 if( ucIndex == 0 )\r
 105                                 {\r
 106                                         vToggleFlashTaskSuspendState();\r
 107                                 }\r
 108 \r
 109                                 break;\r
 110 \r
 111                         case diceSTATE_RUNNING:\r
 112 \r
 113                                 ulDiceRunTime--;\r
 114                                 ulDiceDelay--;\r
 115 \r
 116                                 if( !ulDiceDelay )\r
 117                                 {\r
 118                                         ucDiceValue = rand() % 6 + 1;\r
 119                                         dice7SEG_Value( ucIndex ) = ( dice7SEG_Value( ucIndex ) | 0xf7 ) & cDisplaySegments[ ucIndex ][ ucDiceValue ];\r
 120                                         ulDiceDelayReload = ulDiceDelayReload + 100;\r
 121                                         ulDiceDelay = ulDiceDelayReload;\r
 122                                 }\r
 123 \r
 124                                 if( ulDiceRunTime == 0 )\r
 125                                 {\r
 126                                         dice7SEG_Value( ucIndex ) = ( dice7SEG_Value( ucIndex ) | 0xf7 ) & cDisplaySegments[ ucIndex ][ rand() % 6 + 1 ];\r
 127                                         cDiceState = diceSTATE_STOPPED;\r
 128 \r
 129                                         if( ucIndex == 0 )\r
 130                                         {\r
 131                                                 vTaskDelay( diceEND_DELAY );\r
 132                                                 *pucDisplayOutput[ ucIndex ] = 0xff;\r
 133                                                 vToggleFlashTaskSuspendState();\r
 134                                         }\r
 135                                 }\r
 136 \r
 137                                 break;\r
 138                 }\r
 139         }\r
 140 }\r
 141 /*-----------------------------------------------------------*/\r
 142 \r
 143 __interrupt void vExternalInt8Handler( void )\r
 144 {\r
 145 short sHigherPriorityTaskWoken = pdFALSE;\r
 146 \r
 147         /* Reset the interrupt. */\r
 148         EIRR1_ER8 = 0;\r
 149 \r
 150         xSemaphoreGiveFromISR( xSemaphores[ 0 ], &sHigherPriorityTaskWoken );\r
 151 \r
 152         if( sHigherPriorityTaskWoken != pdFALSE )\r
 153         {\r
 154                 portYIELD_FROM_ISR();\r
 155         }\r
 156 }\r
 157 /*-----------------------------------------------------------*/\r
 158 \r
 159 __interrupt void vExternalInt9Handler( void )\r
 160 {\r
 161 short sHigherPriorityTaskWoken = pdFALSE;\r
 162 \r
 163         /* Reset the interrupt. */\r
 164         EIRR1_ER9 = 0;\r
 165 \r
 166         xSemaphoreGiveFromISR( xSemaphores[ 1 ], &sHigherPriorityTaskWoken );\r
 167 \r
 168         if( sHigherPriorityTaskWoken != pdFALSE )\r
 169         {\r
 170                 portYIELD_FROM_ISR();\r
 171         }\r
 172 }\r
 173 \r
 174 \r
 175 \r
 176 \r
 177 \r
 178 \r
 179 \r