git.sur5r.net Git - freertos/blob - Demo/msp430_CrossWorks/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 \r
  65 /* Scheduler includes. */\r
  66 #include "FreeRTOS.h"\r
  67 #include "task.h"\r
  68 \r
  69 /* Demo application includes. */\r
  70 #include "partest.h"\r
  71 \r
  72 /* Constants required to setup the LCD. */\r
  73 #define LCD_DIV_64 5\r
  74 \r
  75 /* Constants required to access the "LED's".  The LED segments are turned on\r
  76 and off to generate '*' characters. */\r
  77 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  78 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  79 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  80 \r
  81 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  82 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  83 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  84 \r
  85 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  86 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  87                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  88                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  89                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  90                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  91                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  92 \r
  93 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  94                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  95                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  96                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  97                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  98                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  99 \r
 100 /*\r
 101  * Toggle the single genuine built in LED.\r
 102  */\r
 103 static void prvToggleOnBoardLED( void );\r
 104 \r
 105 /*-----------------------------------------------------------*/\r
 106 \r
 107 void vParTestInitialise( void )\r
 108 {\r
 109         /* Initialise the LCD hardware. */\r
 110 \r
 111         /* Used for the onboard LED. */\r
 112         P1DIR = 0x01;\r
 113 \r
 114         // Setup Basic Timer for LCD operation\r
 115         BTCTL = (LCD_DIV_64+0x23);\r
 116 \r
 117         // Setup port functions\r
 118         P1SEL = 0x32;\r
 119         P2SEL = 0x00;\r
 120         P3SEL = 0x00;\r
 121         P4SEL = 0xFC;\r
 122         P5SEL = 0xFF;\r
 123         \r
 124         /* Initialise all segments to off. */\r
 125         LCDM1 = partstSEGMENTS_OFF;     \r
 126         LCDM2 = partstSEGMENTS_OFF;     \r
 127         LCDM3 = partstSEGMENTS_OFF;     \r
 128         LCDM4 = partstSEGMENTS_OFF;     \r
 129         LCDM5 = partstSEGMENTS_OFF;     \r
 130         LCDM6 = partstSEGMENTS_OFF;     \r
 131         LCDM7 = partstSEGMENTS_OFF;     \r
 132         LCDM8 = partstSEGMENTS_OFF;     \r
 133         LCDM9 = partstSEGMENTS_OFF;     \r
 134         LCDM10 = partstSEGMENTS_OFF;    \r
 135         LCDM11 = partstSEGMENTS_OFF;    \r
 136         LCDM12 = partstSEGMENTS_OFF;    \r
 137         LCDM13 = partstSEGMENTS_OFF;    \r
 138         LCDM14 = partstSEGMENTS_OFF;    \r
 139         LCDM15 = partstSEGMENTS_OFF;    \r
 140         LCDM16 = partstSEGMENTS_OFF;    \r
 141         LCDM17 = partstSEGMENTS_OFF;    \r
 142         LCDM18 = partstSEGMENTS_OFF;    \r
 143         LCDM19 = partstSEGMENTS_OFF;    \r
 144         LCDM20 = partstSEGMENTS_OFF;    \r
 145 \r
 146         /* Setup LCD control. */\r
 147         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 148 }\r
 149 /*-----------------------------------------------------------*/\r
 150 \r
 151 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 152 {\r
 153         /* Set or clear the output [in this case show or hide the '*' character. */\r
 154         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 155         {\r
 156                 vTaskSuspendAll();\r
 157                 {\r
 158                         if( xValue )\r
 159                         {\r
 160                                 /* Turn on the segments required to show the '*'. */\r
 161                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 162                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 163                         }\r
 164                         else\r
 165                         {\r
 166                                 /* Turn off all the segments. */\r
 167                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 168                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 169                         }\r
 170                 }\r
 171                 xTaskResumeAll();\r
 172         }\r
 173 }\r
 174 /*-----------------------------------------------------------*/\r
 175 \r
 176 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 177 {\r
 178         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 179         {\r
 180                 vTaskSuspendAll();\r
 181                 {\r
 182                         /* If the '*' is already showing - hide it.  If it is not already\r
 183                         showing then show it. */\r
 184                         if( *( ucRHSSegments[ uxLED ] ) )\r
 185                         {\r
 186                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 187                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 188                         }\r
 189                         else\r
 190                         {\r
 191                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 192                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 193                         }\r
 194                 }\r
 195                 xTaskResumeAll();\r
 196         }\r
 197         else\r
 198         {\r
 199                 if( uxLED == partstON_BOARD_LED )\r
 200                 {\r
 201                         /* The request related to the genuine on board LED. */\r
 202                         prvToggleOnBoardLED();\r
 203                 }\r
 204         }       \r
 205 }\r
 206 /*-----------------------------------------------------------*/\r
 207 \r
 208 static void prvToggleOnBoardLED( void )\r
 209 {\r
 210 static unsigned portSHORT sState = pdFALSE;\r
 211 \r
 212         /* Toggle the state of the single genuine on board LED. */\r
 213         if( sState )    \r
 214         {\r
 215                 P1OUT |= mainON_BOARD_LED_BIT;\r
 216         }\r
 217         else\r
 218         {\r
 219                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 220         }\r
 221 \r
 222         sState = !sState;\r
 223 }\r
 224 /*-----------------------------------------------------------*/\r
 225 \r
 226 \r