git.sur5r.net Git - freertos/blob - Demo/msp430_IAR/ParTest/ParTest.c

   1 /*\r
   2         FreeRTOS.org V5.1.0 - 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
  29     * SAVE TIME AND MONEY!  We can port FreeRTOS.org to your own hardware,    *\r
  30     * and even write all or part of your application on your behalf.          *\r
  31     * See http://www.OpenRTOS.com for details of the services we provide to   *\r
  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 /*-----------------------------------------------------------\r
  51  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  52  * is really operating on the LCD display.\r
  53  *-----------------------------------------------------------*/\r
  54 \r
  55 /*\r
  56  * This demo is configured to execute on the ES449 prototyping board from\r
  57  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  58  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  59  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  60  * next LED 1, etc.\r
  61  *\r
  62  * There is a single genuine on board LED referenced as LED 10.\r
  63  */\r
  64 \r
  65 \r
  66 /* Scheduler includes. */\r
  67 #include "FreeRTOS.h"\r
  68 #include "task.h"\r
  69 \r
  70 /* Demo application includes. */\r
  71 #include "partest.h"\r
  72 \r
  73 /* Constants required to setup the LCD. */\r
  74 #define LCD_DIV_64 5\r
  75 \r
  76 /* Constants required to access the "LED's".  The LED segments are turned on\r
  77 and off to generate '*' characters. */\r
  78 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  79 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  80 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  81 \r
  82 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  83 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  84 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  85 \r
  86 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  87 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  88                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  89                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  90                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  91                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  92                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  93 \r
  94 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  95                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  96                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  97                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  98                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  99                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
 100 \r
 101 /*\r
 102  * Toggle the single genuine built in LED.\r
 103  */\r
 104 static void prvToggleOnBoardLED( void );\r
 105 \r
 106 /*-----------------------------------------------------------*/\r
 107 \r
 108 void vParTestInitialise( void )\r
 109 {\r
 110         /* Initialise the LCD hardware. */\r
 111 \r
 112         /* Used for the onboard LED. */\r
 113         P1DIR = 0x01;\r
 114 \r
 115         // Setup Basic Timer for LCD operation\r
 116         BTCTL = (LCD_DIV_64+0x23);\r
 117 \r
 118         // Setup port functions\r
 119         P1SEL = 0x32;\r
 120         P2SEL = 0x00;\r
 121         P3SEL = 0x00;\r
 122         P4SEL = 0xFC;\r
 123         P5SEL = 0xFF;\r
 124         \r
 125         /* Initialise all segments to off. */\r
 126         LCDM1 = partstSEGMENTS_OFF;     \r
 127         LCDM2 = partstSEGMENTS_OFF;     \r
 128         LCDM3 = partstSEGMENTS_OFF;     \r
 129         LCDM4 = partstSEGMENTS_OFF;     \r
 130         LCDM5 = partstSEGMENTS_OFF;     \r
 131         LCDM6 = partstSEGMENTS_OFF;     \r
 132         LCDM7 = partstSEGMENTS_OFF;     \r
 133         LCDM8 = partstSEGMENTS_OFF;     \r
 134         LCDM9 = partstSEGMENTS_OFF;     \r
 135         LCDM10 = partstSEGMENTS_OFF;    \r
 136         LCDM11 = partstSEGMENTS_OFF;    \r
 137         LCDM12 = partstSEGMENTS_OFF;    \r
 138         LCDM13 = partstSEGMENTS_OFF;    \r
 139         LCDM14 = partstSEGMENTS_OFF;    \r
 140         LCDM15 = partstSEGMENTS_OFF;    \r
 141         LCDM16 = partstSEGMENTS_OFF;    \r
 142         LCDM17 = partstSEGMENTS_OFF;    \r
 143         LCDM18 = partstSEGMENTS_OFF;    \r
 144         LCDM19 = partstSEGMENTS_OFF;    \r
 145         LCDM20 = partstSEGMENTS_OFF;    \r
 146 \r
 147         /* Setup LCD control. */\r
 148         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 149 }\r
 150 /*-----------------------------------------------------------*/\r
 151 \r
 152 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 153 {\r
 154         /* Set or clear the output [in this case show or hide the '*' character. */\r
 155         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 156         {\r
 157                 vTaskSuspendAll();\r
 158                 {\r
 159                         if( xValue )\r
 160                         {\r
 161                                 /* Turn on the segments required to show the '*'. */\r
 162                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 163                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 164                         }\r
 165                         else\r
 166                         {\r
 167                                 /* Turn off all the segments. */\r
 168                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 169                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 170                         }\r
 171                 }\r
 172                 xTaskResumeAll();\r
 173         }\r
 174 }\r
 175 /*-----------------------------------------------------------*/\r
 176 \r
 177 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 178 {\r
 179         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 180         {\r
 181                 vTaskSuspendAll();\r
 182                 {\r
 183                         /* If the '*' is already showing - hide it.  If it is not already\r
 184                         showing then show it. */\r
 185                         if( *( ucRHSSegments[ uxLED ] ) )\r
 186                         {\r
 187                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 188                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 189                         }\r
 190                         else\r
 191                         {\r
 192                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 193                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 194                         }\r
 195                 }\r
 196                 xTaskResumeAll();\r
 197         }\r
 198         else\r
 199         {\r
 200                 if( uxLED == partstON_BOARD_LED )\r
 201                 {\r
 202                         /* The request related to the genuine on board LED. */\r
 203                         prvToggleOnBoardLED();\r
 204                 }\r
 205         }       \r
 206 }\r
 207 /*-----------------------------------------------------------*/\r
 208 \r
 209 static void prvToggleOnBoardLED( void )\r
 210 {\r
 211 static unsigned portSHORT sState = pdFALSE;\r
 212 \r
 213         /* Toggle the state of the single genuine on board LED. */\r
 214         if( sState )    \r
 215         {\r
 216                 P1OUT |= mainON_BOARD_LED_BIT;\r
 217         }\r
 218         else\r
 219         {\r
 220                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 221         }\r
 222 \r
 223         sState = !sState;\r
 224 }\r
 225 /*-----------------------------------------------------------*/\r
 226 \r
 227 \r