git.sur5r.net Git - freertos/blob - Demo/msp430_CrossWorks/ParTest/ParTest.c

   1 /*\r
   2         FreeRTOS.org V4.7.2 - 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         Please ensure to read the configuration and relevant port sections of the \r
  29         online documentation.\r
  30 \r
  31         +++ http://www.FreeRTOS.org +++\r
  32         Documentation, latest information, license and contact details.  \r
  33 \r
  34         +++ http://www.SafeRTOS.com +++\r
  35         A version that is certified for use in safety critical systems.\r
  36 \r
  37         +++ http://www.OpenRTOS.com +++\r
  38         Commercial support, development, porting, licensing and training services.\r
  39 \r
  40         ***************************************************************************\r
  41 */\r
  42 \r
  43 /*-----------------------------------------------------------\r
  44  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  45  * is really operating on the LCD display.\r
  46  *-----------------------------------------------------------*/\r
  47 \r
  48 /*\r
  49  * This demo is configured to execute on the ES449 prototyping board from\r
  50  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  51  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  52  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  53  * next LED 1, etc.\r
  54  *\r
  55  * There is a single genuine on board LED referenced as LED 10.\r
  56  */\r
  57 \r
  58 \r
  59 /* Scheduler includes. */\r
  60 #include "FreeRTOS.h"\r
  61 #include "task.h"\r
  62 \r
  63 /* Demo application includes. */\r
  64 #include "partest.h"\r
  65 \r
  66 /* Constants required to setup the LCD. */\r
  67 #define LCD_DIV_64 5\r
  68 \r
  69 /* Constants required to access the "LED's".  The LED segments are turned on\r
  70 and off to generate '*' characters. */\r
  71 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  72 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  73 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  74 \r
  75 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  76 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  77 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  78 \r
  79 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  80 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  81                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  82                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  83                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  84                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  85                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  86 \r
  87 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  88                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  89                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  90                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  91                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  92                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  93 \r
  94 /*\r
  95  * Toggle the single genuine built in LED.\r
  96  */\r
  97 static void prvToggleOnBoardLED( void );\r
  98 \r
  99 /*-----------------------------------------------------------*/\r
 100 \r
 101 void vParTestInitialise( void )\r
 102 {\r
 103         /* Initialise the LCD hardware. */\r
 104 \r
 105         /* Used for the onboard LED. */\r
 106         P1DIR = 0x01;\r
 107 \r
 108         // Setup Basic Timer for LCD operation\r
 109         BTCTL = (LCD_DIV_64+0x23);\r
 110 \r
 111         // Setup port functions\r
 112         P1SEL = 0x32;\r
 113         P2SEL = 0x00;\r
 114         P3SEL = 0x00;\r
 115         P4SEL = 0xFC;\r
 116         P5SEL = 0xFF;\r
 117         \r
 118         /* Initialise all segments to off. */\r
 119         LCDM1 = partstSEGMENTS_OFF;     \r
 120         LCDM2 = partstSEGMENTS_OFF;     \r
 121         LCDM3 = partstSEGMENTS_OFF;     \r
 122         LCDM4 = partstSEGMENTS_OFF;     \r
 123         LCDM5 = partstSEGMENTS_OFF;     \r
 124         LCDM6 = partstSEGMENTS_OFF;     \r
 125         LCDM7 = partstSEGMENTS_OFF;     \r
 126         LCDM8 = partstSEGMENTS_OFF;     \r
 127         LCDM9 = partstSEGMENTS_OFF;     \r
 128         LCDM10 = partstSEGMENTS_OFF;    \r
 129         LCDM11 = partstSEGMENTS_OFF;    \r
 130         LCDM12 = partstSEGMENTS_OFF;    \r
 131         LCDM13 = partstSEGMENTS_OFF;    \r
 132         LCDM14 = partstSEGMENTS_OFF;    \r
 133         LCDM15 = partstSEGMENTS_OFF;    \r
 134         LCDM16 = partstSEGMENTS_OFF;    \r
 135         LCDM17 = partstSEGMENTS_OFF;    \r
 136         LCDM18 = partstSEGMENTS_OFF;    \r
 137         LCDM19 = partstSEGMENTS_OFF;    \r
 138         LCDM20 = partstSEGMENTS_OFF;    \r
 139 \r
 140         /* Setup LCD control. */\r
 141         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 142 }\r
 143 /*-----------------------------------------------------------*/\r
 144 \r
 145 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 146 {\r
 147         /* Set or clear the output [in this case show or hide the '*' character. */\r
 148         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 149         {\r
 150                 vTaskSuspendAll();\r
 151                 {\r
 152                         if( xValue )\r
 153                         {\r
 154                                 /* Turn on the segments required to show the '*'. */\r
 155                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 156                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 157                         }\r
 158                         else\r
 159                         {\r
 160                                 /* Turn off all the segments. */\r
 161                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 162                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 163                         }\r
 164                 }\r
 165                 xTaskResumeAll();\r
 166         }\r
 167 }\r
 168 /*-----------------------------------------------------------*/\r
 169 \r
 170 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 171 {\r
 172         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 173         {\r
 174                 vTaskSuspendAll();\r
 175                 {\r
 176                         /* If the '*' is already showing - hide it.  If it is not already\r
 177                         showing then show it. */\r
 178                         if( *( ucRHSSegments[ uxLED ] ) )\r
 179                         {\r
 180                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 181                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 182                         }\r
 183                         else\r
 184                         {\r
 185                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 186                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 187                         }\r
 188                 }\r
 189                 xTaskResumeAll();\r
 190         }\r
 191         else\r
 192         {\r
 193                 if( uxLED == partstON_BOARD_LED )\r
 194                 {\r
 195                         /* The request related to the genuine on board LED. */\r
 196                         prvToggleOnBoardLED();\r
 197                 }\r
 198         }       \r
 199 }\r
 200 /*-----------------------------------------------------------*/\r
 201 \r
 202 static void prvToggleOnBoardLED( void )\r
 203 {\r
 204 static unsigned portSHORT sState = pdFALSE;\r
 205 \r
 206         /* Toggle the state of the single genuine on board LED. */\r
 207         if( sState )    \r
 208         {\r
 209                 P1OUT |= mainON_BOARD_LED_BIT;\r
 210         }\r
 211         else\r
 212         {\r
 213                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 214         }\r
 215 \r
 216         sState = !sState;\r
 217 }\r
 218 /*-----------------------------------------------------------*/\r
 219 \r
 220 \r