git.sur5r.net Git - freertos/blob - Demo/msp430_GCC/ParTest/ParTest.c

   1 /*\r
   2         FreeRTOS.org V4.8.0 - 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
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  31         * for you?  See http://www.OpenRTOS.com for details.                                      *\r
  32         *                                                                                                                                                 *\r
  33         ***************************************************************************\r
  34         ***************************************************************************\r
  35 \r
  36         Please ensure to read the configuration and relevant port sections of the\r
  37         online documentation.\r
  38 \r
  39         http://www.FreeRTOS.org - Documentation, latest information, license and \r
  40         contact details.\r
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  42         http://www.SafeRTOS.com - A version that is certified for use in safety \r
  43         critical systems.\r
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  45         http://www.OpenRTOS.com - Commercial support, development, porting, \r
  46         licensing and training services.\r
  47 */\r
  48 \r
  49 /*-----------------------------------------------------------\r
  50  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  51  * is really operating on the LCD display.\r
  52  *-----------------------------------------------------------*/\r
  53 \r
  54 /*\r
  55  * This demo is configured to execute on the ES449 prototyping board from\r
  56  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  57  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  58  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  59  * next LED 1, etc.\r
  60  *\r
  61  * There is a single genuine on board LED referenced as LED 10.\r
  62  */\r
  63 \r
  64 /* Standard includes. */\r
  65 #include <signal.h>\r
  66 \r
  67 /* Scheduler includes. */\r
  68 #include "FreeRTOS.h"\r
  69 #include "task.h"\r
  70 \r
  71 /* Demo application includes. */\r
  72 #include "partest.h"\r
  73 \r
  74 /* Constants required to setup the LCD. */\r
  75 #define LCD_DIV_64 5\r
  76 \r
  77 /* Constants required to access the "LED's".  The LED segments are turned on\r
  78 and off to generate '*' characters. */\r
  79 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  80 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  81 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  82 \r
  83 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  84 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  85 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  86 \r
  87 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  88 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  89                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  90                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  91                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  92                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  93                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  94 \r
  95 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  96                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  97                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  98                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  99                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
 100                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
 101 \r
 102 /*\r
 103  * Toggle the single genuine built in LED.\r
 104  */\r
 105 static void prvToggleOnBoardLED( void );\r
 106 \r
 107 /*-----------------------------------------------------------*/\r
 108 \r
 109 void vParTestInitialise( void )\r
 110 {\r
 111         /* Initialise the LCD hardware. */\r
 112 \r
 113         /* Used for the onboard LED. */\r
 114         P1DIR = 0x01;\r
 115 \r
 116         // Setup Basic Timer for LCD operation\r
 117         BTCTL = (LCD_DIV_64+0x23);\r
 118 \r
 119         // Setup port functions\r
 120         P1SEL = 0x32;\r
 121         P2SEL = 0x00;\r
 122         P3SEL = 0x00;\r
 123         P4SEL = 0xFC;\r
 124         P5SEL = 0xFF;\r
 125         \r
 126         /* Initialise all segments to off. */\r
 127         LCDM1 = partstSEGMENTS_OFF;     \r
 128         LCDM2 = partstSEGMENTS_OFF;     \r
 129         LCDM3 = partstSEGMENTS_OFF;     \r
 130         LCDM4 = partstSEGMENTS_OFF;     \r
 131         LCDM5 = partstSEGMENTS_OFF;     \r
 132         LCDM6 = partstSEGMENTS_OFF;     \r
 133         LCDM7 = partstSEGMENTS_OFF;     \r
 134         LCDM8 = partstSEGMENTS_OFF;     \r
 135         LCDM9 = partstSEGMENTS_OFF;     \r
 136         LCDM10 = partstSEGMENTS_OFF;    \r
 137         LCDM11 = partstSEGMENTS_OFF;    \r
 138         LCDM12 = partstSEGMENTS_OFF;    \r
 139         LCDM13 = partstSEGMENTS_OFF;    \r
 140         LCDM14 = partstSEGMENTS_OFF;    \r
 141         LCDM15 = partstSEGMENTS_OFF;    \r
 142         LCDM16 = partstSEGMENTS_OFF;    \r
 143         LCDM17 = partstSEGMENTS_OFF;    \r
 144         LCDM18 = partstSEGMENTS_OFF;    \r
 145         LCDM19 = partstSEGMENTS_OFF;    \r
 146         LCDM20 = partstSEGMENTS_OFF;    \r
 147 \r
 148         /* Setup LCD control. */\r
 149         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 150 }\r
 151 /*-----------------------------------------------------------*/\r
 152 \r
 153 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 154 {\r
 155         /* Set or clear the output [in this case show or hide the '*' character. */\r
 156         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 157         {\r
 158                 vTaskSuspendAll();\r
 159                 {\r
 160                         if( xValue )\r
 161                         {\r
 162                                 /* Turn on the segments required to show the '*'. */\r
 163                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 164                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 165                         }\r
 166                         else\r
 167                         {\r
 168                                 /* Turn off all the segments. */\r
 169                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 170                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 171                         }\r
 172                 }\r
 173                 xTaskResumeAll();\r
 174         }\r
 175 }\r
 176 /*-----------------------------------------------------------*/\r
 177 \r
 178 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 179 {\r
 180         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 181         {\r
 182                 vTaskSuspendAll();\r
 183                 {\r
 184                         /* If the '*' is already showing - hide it.  If it is not already\r
 185                         showing then show it. */\r
 186                         if( *( ucRHSSegments[ uxLED ] ) )\r
 187                         {\r
 188                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 189                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 190                         }\r
 191                         else\r
 192                         {\r
 193                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 194                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 195                         }\r
 196                 }\r
 197                 xTaskResumeAll();\r
 198         }\r
 199         else\r
 200         {\r
 201                 if( uxLED == partstON_BOARD_LED )\r
 202                 {\r
 203                         /* The request related to the genuine on board LED. */\r
 204                         prvToggleOnBoardLED();\r
 205                 }\r
 206         }       \r
 207 }\r
 208 /*-----------------------------------------------------------*/\r
 209 \r
 210 static void prvToggleOnBoardLED( void )\r
 211 {\r
 212 static unsigned portSHORT sState = pdFALSE;\r
 213 \r
 214         /* Toggle the state of the single genuine on board LED. */\r
 215         if( sState )    \r
 216         {\r
 217                 P1OUT |= mainON_BOARD_LED_BIT;\r
 218         }\r
 219         else\r
 220         {\r
 221                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 222         }\r
 223 \r
 224         sState = !sState;\r
 225 }\r
 226 /*-----------------------------------------------------------*/\r
 227 \r
 228 \r