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

   1 /*\r
   2         FreeRTOS.org V4.3.1 - 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 for an IEC 61508 compliant version along\r
  32         with commercial development and support options.\r
  33         ***************************************************************************\r
  34 */\r
  35 \r
  36 /*-----------------------------------------------------------\r
  37  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  38  * is really operating on the LCD display.\r
  39  *-----------------------------------------------------------*/\r
  40 \r
  41 /*\r
  42  * This demo is configured to execute on the ES449 prototyping board from\r
  43  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  44  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  45  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  46  * next LED 1, etc.\r
  47  *\r
  48  * There is a single genuine on board LED referenced as LED 10.\r
  49  */\r
  50 \r
  51 /* Standard includes. */\r
  52 #include <signal.h>\r
  53 \r
  54 /* Scheduler includes. */\r
  55 #include "FreeRTOS.h"\r
  56 #include "task.h"\r
  57 \r
  58 /* Demo application includes. */\r
  59 #include "partest.h"\r
  60 \r
  61 /* Constants required to setup the LCD. */\r
  62 #define LCD_DIV_64 5\r
  63 \r
  64 /* Constants required to access the "LED's".  The LED segments are turned on\r
  65 and off to generate '*' characters. */\r
  66 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  67 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  68 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  69 \r
  70 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  71 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  72 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  73 \r
  74 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  75 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  76                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  77                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  78                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  79                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  80                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  81 \r
  82 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  83                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  84                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  85                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  86                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  87                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  88 \r
  89 /*\r
  90  * Toggle the single genuine built in LED.\r
  91  */\r
  92 static void prvToggleOnBoardLED( void );\r
  93 \r
  94 /*-----------------------------------------------------------*/\r
  95 \r
  96 void vParTestInitialise( void )\r
  97 {\r
  98         /* Initialise the LCD hardware. */\r
  99 \r
 100         /* Used for the onboard LED. */\r
 101         P1DIR = 0x01;\r
 102 \r
 103         // Setup Basic Timer for LCD operation\r
 104         BTCTL = (LCD_DIV_64+0x23);\r
 105 \r
 106         // Setup port functions\r
 107         P1SEL = 0x32;\r
 108         P2SEL = 0x00;\r
 109         P3SEL = 0x00;\r
 110         P4SEL = 0xFC;\r
 111         P5SEL = 0xFF;\r
 112         \r
 113         /* Initialise all segments to off. */\r
 114         LCDM1 = partstSEGMENTS_OFF;     \r
 115         LCDM2 = partstSEGMENTS_OFF;     \r
 116         LCDM3 = partstSEGMENTS_OFF;     \r
 117         LCDM4 = partstSEGMENTS_OFF;     \r
 118         LCDM5 = partstSEGMENTS_OFF;     \r
 119         LCDM6 = partstSEGMENTS_OFF;     \r
 120         LCDM7 = partstSEGMENTS_OFF;     \r
 121         LCDM8 = partstSEGMENTS_OFF;     \r
 122         LCDM9 = partstSEGMENTS_OFF;     \r
 123         LCDM10 = partstSEGMENTS_OFF;    \r
 124         LCDM11 = partstSEGMENTS_OFF;    \r
 125         LCDM12 = partstSEGMENTS_OFF;    \r
 126         LCDM13 = partstSEGMENTS_OFF;    \r
 127         LCDM14 = partstSEGMENTS_OFF;    \r
 128         LCDM15 = partstSEGMENTS_OFF;    \r
 129         LCDM16 = partstSEGMENTS_OFF;    \r
 130         LCDM17 = partstSEGMENTS_OFF;    \r
 131         LCDM18 = partstSEGMENTS_OFF;    \r
 132         LCDM19 = partstSEGMENTS_OFF;    \r
 133         LCDM20 = partstSEGMENTS_OFF;    \r
 134 \r
 135         /* Setup LCD control. */\r
 136         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 137 }\r
 138 /*-----------------------------------------------------------*/\r
 139 \r
 140 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 141 {\r
 142         /* Set or clear the output [in this case show or hide the '*' character. */\r
 143         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 144         {\r
 145                 vTaskSuspendAll();\r
 146                 {\r
 147                         if( xValue )\r
 148                         {\r
 149                                 /* Turn on the segments required to show the '*'. */\r
 150                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 151                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 152                         }\r
 153                         else\r
 154                         {\r
 155                                 /* Turn off all the segments. */\r
 156                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 157                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 158                         }\r
 159                 }\r
 160                 xTaskResumeAll();\r
 161         }\r
 162 }\r
 163 /*-----------------------------------------------------------*/\r
 164 \r
 165 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 166 {\r
 167         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 168         {\r
 169                 vTaskSuspendAll();\r
 170                 {\r
 171                         /* If the '*' is already showing - hide it.  If it is not already\r
 172                         showing then show it. */\r
 173                         if( *( ucRHSSegments[ uxLED ] ) )\r
 174                         {\r
 175                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 176                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 177                         }\r
 178                         else\r
 179                         {\r
 180                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 181                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 182                         }\r
 183                 }\r
 184                 xTaskResumeAll();\r
 185         }\r
 186         else\r
 187         {\r
 188                 if( uxLED == partstON_BOARD_LED )\r
 189                 {\r
 190                         /* The request related to the genuine on board LED. */\r
 191                         prvToggleOnBoardLED();\r
 192                 }\r
 193         }       \r
 194 }\r
 195 /*-----------------------------------------------------------*/\r
 196 \r
 197 static void prvToggleOnBoardLED( void )\r
 198 {\r
 199 static unsigned portSHORT sState = pdFALSE;\r
 200 \r
 201         /* Toggle the state of the single genuine on board LED. */\r
 202         if( sState )    \r
 203         {\r
 204                 P1OUT |= mainON_BOARD_LED_BIT;\r
 205         }\r
 206         else\r
 207         {\r
 208                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 209         }\r
 210 \r
 211         sState = !sState;\r
 212 }\r
 213 /*-----------------------------------------------------------*/\r
 214 \r
 215 \r