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

   1 /*\r
   2         FreeRTOS.org V4.7.0 - Copyright (C) 2003-2007 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         See http://www.FreeRTOS.org for documentation, latest information, license \r
  28         and contact details.  Please ensure to read the configuration and relevant \r
  29         port sections of the online documentation.\r
  30 \r
  31         Also see http://www.SafeRTOS.com a version that has been certified for use\r
  32         in safety critical systems, plus commercial licensing, development and\r
  33         support options.\r
  34         ***************************************************************************\r
  35 */\r
  36 \r
  37 /*-----------------------------------------------------------\r
  38  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  39  * is really operating on the LCD display.\r
  40  *-----------------------------------------------------------*/\r
  41 \r
  42 /*\r
  43  * This demo is configured to execute on the ES449 prototyping board from\r
  44  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  45  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  46  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  47  * next LED 1, etc.\r
  48  *\r
  49  * There is a single genuine on board LED referenced as LED 10.\r
  50  */\r
  51 \r
  52 /* Standard includes. */\r
  53 #include <signal.h>\r
  54 \r
  55 /* Scheduler includes. */\r
  56 #include "FreeRTOS.h"\r
  57 #include "task.h"\r
  58 \r
  59 /* Demo application includes. */\r
  60 #include "partest.h"\r
  61 \r
  62 /* Constants required to setup the LCD. */\r
  63 #define LCD_DIV_64 5\r
  64 \r
  65 /* Constants required to access the "LED's".  The LED segments are turned on\r
  66 and off to generate '*' characters. */\r
  67 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  68 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  69 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  70 \r
  71 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  72 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  73 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  74 \r
  75 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  76 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  77                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  78                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  79                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  80                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  81                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  82 \r
  83 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  84                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  85                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  86                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  87                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  88                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  89 \r
  90 /*\r
  91  * Toggle the single genuine built in LED.\r
  92  */\r
  93 static void prvToggleOnBoardLED( void );\r
  94 \r
  95 /*-----------------------------------------------------------*/\r
  96 \r
  97 void vParTestInitialise( void )\r
  98 {\r
  99         /* Initialise the LCD hardware. */\r
 100 \r
 101         /* Used for the onboard LED. */\r
 102         P1DIR = 0x01;\r
 103 \r
 104         // Setup Basic Timer for LCD operation\r
 105         BTCTL = (LCD_DIV_64+0x23);\r
 106 \r
 107         // Setup port functions\r
 108         P1SEL = 0x32;\r
 109         P2SEL = 0x00;\r
 110         P3SEL = 0x00;\r
 111         P4SEL = 0xFC;\r
 112         P5SEL = 0xFF;\r
 113         \r
 114         /* Initialise all segments to off. */\r
 115         LCDM1 = partstSEGMENTS_OFF;     \r
 116         LCDM2 = partstSEGMENTS_OFF;     \r
 117         LCDM3 = partstSEGMENTS_OFF;     \r
 118         LCDM4 = partstSEGMENTS_OFF;     \r
 119         LCDM5 = partstSEGMENTS_OFF;     \r
 120         LCDM6 = partstSEGMENTS_OFF;     \r
 121         LCDM7 = partstSEGMENTS_OFF;     \r
 122         LCDM8 = partstSEGMENTS_OFF;     \r
 123         LCDM9 = partstSEGMENTS_OFF;     \r
 124         LCDM10 = partstSEGMENTS_OFF;    \r
 125         LCDM11 = partstSEGMENTS_OFF;    \r
 126         LCDM12 = partstSEGMENTS_OFF;    \r
 127         LCDM13 = partstSEGMENTS_OFF;    \r
 128         LCDM14 = partstSEGMENTS_OFF;    \r
 129         LCDM15 = partstSEGMENTS_OFF;    \r
 130         LCDM16 = partstSEGMENTS_OFF;    \r
 131         LCDM17 = partstSEGMENTS_OFF;    \r
 132         LCDM18 = partstSEGMENTS_OFF;    \r
 133         LCDM19 = partstSEGMENTS_OFF;    \r
 134         LCDM20 = partstSEGMENTS_OFF;    \r
 135 \r
 136         /* Setup LCD control. */\r
 137         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 138 }\r
 139 /*-----------------------------------------------------------*/\r
 140 \r
 141 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 142 {\r
 143         /* Set or clear the output [in this case show or hide the '*' character. */\r
 144         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 145         {\r
 146                 vTaskSuspendAll();\r
 147                 {\r
 148                         if( xValue )\r
 149                         {\r
 150                                 /* Turn on the segments required to show the '*'. */\r
 151                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 152                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 153                         }\r
 154                         else\r
 155                         {\r
 156                                 /* Turn off all the segments. */\r
 157                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 158                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 159                         }\r
 160                 }\r
 161                 xTaskResumeAll();\r
 162         }\r
 163 }\r
 164 /*-----------------------------------------------------------*/\r
 165 \r
 166 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 167 {\r
 168         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 169         {\r
 170                 vTaskSuspendAll();\r
 171                 {\r
 172                         /* If the '*' is already showing - hide it.  If it is not already\r
 173                         showing then show it. */\r
 174                         if( *( ucRHSSegments[ uxLED ] ) )\r
 175                         {\r
 176                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 177                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 178                         }\r
 179                         else\r
 180                         {\r
 181                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 182                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 183                         }\r
 184                 }\r
 185                 xTaskResumeAll();\r
 186         }\r
 187         else\r
 188         {\r
 189                 if( uxLED == partstON_BOARD_LED )\r
 190                 {\r
 191                         /* The request related to the genuine on board LED. */\r
 192                         prvToggleOnBoardLED();\r
 193                 }\r
 194         }       \r
 195 }\r
 196 /*-----------------------------------------------------------*/\r
 197 \r
 198 static void prvToggleOnBoardLED( void )\r
 199 {\r
 200 static unsigned portSHORT sState = pdFALSE;\r
 201 \r
 202         /* Toggle the state of the single genuine on board LED. */\r
 203         if( sState )    \r
 204         {\r
 205                 P1OUT |= mainON_BOARD_LED_BIT;\r
 206         }\r
 207         else\r
 208         {\r
 209                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 210         }\r
 211 \r
 212         sState = !sState;\r
 213 }\r
 214 /*-----------------------------------------------------------*/\r
 215 \r
 216 \r