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

   1 /*\r
   2         FreeRTOS.org V4.7.1 - 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         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 /* Standard includes. */\r
  59 #include <signal.h>\r
  60 \r
  61 /* Scheduler includes. */\r
  62 #include "FreeRTOS.h"\r
  63 #include "task.h"\r
  64 \r
  65 /* Demo application includes. */\r
  66 #include "partest.h"\r
  67 \r
  68 /* Constants required to setup the LCD. */\r
  69 #define LCD_DIV_64 5\r
  70 \r
  71 /* Constants required to access the "LED's".  The LED segments are turned on\r
  72 and off to generate '*' characters. */\r
  73 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  74 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  75 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  76 \r
  77 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  78 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  79 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  80 \r
  81 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  82 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  83                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  84                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  85                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  86                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  87                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  88 \r
  89 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  90                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  91                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  92                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  93                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  94                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  95 \r
  96 /*\r
  97  * Toggle the single genuine built in LED.\r
  98  */\r
  99 static void prvToggleOnBoardLED( void );\r
 100 \r
 101 /*-----------------------------------------------------------*/\r
 102 \r
 103 void vParTestInitialise( void )\r
 104 {\r
 105         /* Initialise the LCD hardware. */\r
 106 \r
 107         /* Used for the onboard LED. */\r
 108         P1DIR = 0x01;\r
 109 \r
 110         // Setup Basic Timer for LCD operation\r
 111         BTCTL = (LCD_DIV_64+0x23);\r
 112 \r
 113         // Setup port functions\r
 114         P1SEL = 0x32;\r
 115         P2SEL = 0x00;\r
 116         P3SEL = 0x00;\r
 117         P4SEL = 0xFC;\r
 118         P5SEL = 0xFF;\r
 119         \r
 120         /* Initialise all segments to off. */\r
 121         LCDM1 = partstSEGMENTS_OFF;     \r
 122         LCDM2 = partstSEGMENTS_OFF;     \r
 123         LCDM3 = partstSEGMENTS_OFF;     \r
 124         LCDM4 = partstSEGMENTS_OFF;     \r
 125         LCDM5 = partstSEGMENTS_OFF;     \r
 126         LCDM6 = partstSEGMENTS_OFF;     \r
 127         LCDM7 = partstSEGMENTS_OFF;     \r
 128         LCDM8 = partstSEGMENTS_OFF;     \r
 129         LCDM9 = partstSEGMENTS_OFF;     \r
 130         LCDM10 = partstSEGMENTS_OFF;    \r
 131         LCDM11 = partstSEGMENTS_OFF;    \r
 132         LCDM12 = partstSEGMENTS_OFF;    \r
 133         LCDM13 = partstSEGMENTS_OFF;    \r
 134         LCDM14 = partstSEGMENTS_OFF;    \r
 135         LCDM15 = partstSEGMENTS_OFF;    \r
 136         LCDM16 = partstSEGMENTS_OFF;    \r
 137         LCDM17 = partstSEGMENTS_OFF;    \r
 138         LCDM18 = partstSEGMENTS_OFF;    \r
 139         LCDM19 = partstSEGMENTS_OFF;    \r
 140         LCDM20 = partstSEGMENTS_OFF;    \r
 141 \r
 142         /* Setup LCD control. */\r
 143         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 144 }\r
 145 /*-----------------------------------------------------------*/\r
 146 \r
 147 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 148 {\r
 149         /* Set or clear the output [in this case show or hide the '*' character. */\r
 150         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 151         {\r
 152                 vTaskSuspendAll();\r
 153                 {\r
 154                         if( xValue )\r
 155                         {\r
 156                                 /* Turn on the segments required to show the '*'. */\r
 157                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 158                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 159                         }\r
 160                         else\r
 161                         {\r
 162                                 /* Turn off all the segments. */\r
 163                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 164                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 165                         }\r
 166                 }\r
 167                 xTaskResumeAll();\r
 168         }\r
 169 }\r
 170 /*-----------------------------------------------------------*/\r
 171 \r
 172 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 173 {\r
 174         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 175         {\r
 176                 vTaskSuspendAll();\r
 177                 {\r
 178                         /* If the '*' is already showing - hide it.  If it is not already\r
 179                         showing then show it. */\r
 180                         if( *( ucRHSSegments[ uxLED ] ) )\r
 181                         {\r
 182                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 183                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 184                         }\r
 185                         else\r
 186                         {\r
 187                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 188                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 189                         }\r
 190                 }\r
 191                 xTaskResumeAll();\r
 192         }\r
 193         else\r
 194         {\r
 195                 if( uxLED == partstON_BOARD_LED )\r
 196                 {\r
 197                         /* The request related to the genuine on board LED. */\r
 198                         prvToggleOnBoardLED();\r
 199                 }\r
 200         }       \r
 201 }\r
 202 /*-----------------------------------------------------------*/\r
 203 \r
 204 static void prvToggleOnBoardLED( void )\r
 205 {\r
 206 static unsigned portSHORT sState = pdFALSE;\r
 207 \r
 208         /* Toggle the state of the single genuine on board LED. */\r
 209         if( sState )    \r
 210         {\r
 211                 P1OUT |= mainON_BOARD_LED_BIT;\r
 212         }\r
 213         else\r
 214         {\r
 215                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 216         }\r
 217 \r
 218         sState = !sState;\r
 219 }\r
 220 /*-----------------------------------------------------------*/\r
 221 \r
 222 \r