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

   1 /*\r
   2         FreeRTOS.org V4.0.3 - Copyright (C) 2003-2006 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 */\r
  32 \r
  33 /*-----------------------------------------------------------\r
  34  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  35  * is really operating on the LCD display.\r
  36  *-----------------------------------------------------------*/\r
  37 \r
  38 /*\r
  39  * This demo is configured to execute on the ES449 prototyping board from\r
  40  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  41  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  42  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  43  * next LED 1, etc.\r
  44  *\r
  45  * There is a single genuine on board LED referenced as LED 10.\r
  46  */\r
  47 \r
  48 \r
  49 /* Scheduler includes. */\r
  50 #include "FreeRTOS.h"\r
  51 #include "task.h"\r
  52 \r
  53 /* Demo application includes. */\r
  54 #include "partest.h"\r
  55 \r
  56 /* Constants required to setup the LCD. */\r
  57 #define LCD_DIV_64 5\r
  58 \r
  59 /* Constants required to access the "LED's".  The LED segments are turned on\r
  60 and off to generate '*' characters. */\r
  61 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  62 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  63 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  64 \r
  65 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  66 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  67 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  68 \r
  69 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  70 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  71                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  72                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  73                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  74                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  75                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  76 \r
  77 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  78                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  79                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  80                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  81                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  82                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  83 \r
  84 /*\r
  85  * Toggle the single genuine built in LED.\r
  86  */\r
  87 static void prvToggleOnBoardLED( void );\r
  88 \r
  89 /*-----------------------------------------------------------*/\r
  90 \r
  91 void vParTestInitialise( void )\r
  92 {\r
  93         /* Initialise the LCD hardware. */\r
  94 \r
  95         /* Used for the onboard LED. */\r
  96         P1DIR = 0x01;\r
  97 \r
  98         // Setup Basic Timer for LCD operation\r
  99         BTCTL = (LCD_DIV_64+0x23);\r
 100 \r
 101         // Setup port functions\r
 102         P1SEL = 0x32;\r
 103         P2SEL = 0x00;\r
 104         P3SEL = 0x00;\r
 105         P4SEL = 0xFC;\r
 106         P5SEL = 0xFF;\r
 107         \r
 108         /* Initialise all segments to off. */\r
 109         LCDM1 = partstSEGMENTS_OFF;     \r
 110         LCDM2 = partstSEGMENTS_OFF;     \r
 111         LCDM3 = partstSEGMENTS_OFF;     \r
 112         LCDM4 = partstSEGMENTS_OFF;     \r
 113         LCDM5 = partstSEGMENTS_OFF;     \r
 114         LCDM6 = partstSEGMENTS_OFF;     \r
 115         LCDM7 = partstSEGMENTS_OFF;     \r
 116         LCDM8 = partstSEGMENTS_OFF;     \r
 117         LCDM9 = partstSEGMENTS_OFF;     \r
 118         LCDM10 = partstSEGMENTS_OFF;    \r
 119         LCDM11 = partstSEGMENTS_OFF;    \r
 120         LCDM12 = partstSEGMENTS_OFF;    \r
 121         LCDM13 = partstSEGMENTS_OFF;    \r
 122         LCDM14 = partstSEGMENTS_OFF;    \r
 123         LCDM15 = partstSEGMENTS_OFF;    \r
 124         LCDM16 = partstSEGMENTS_OFF;    \r
 125         LCDM17 = partstSEGMENTS_OFF;    \r
 126         LCDM18 = partstSEGMENTS_OFF;    \r
 127         LCDM19 = partstSEGMENTS_OFF;    \r
 128         LCDM20 = partstSEGMENTS_OFF;    \r
 129 \r
 130         /* Setup LCD control. */\r
 131         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 132 }\r
 133 /*-----------------------------------------------------------*/\r
 134 \r
 135 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 136 {\r
 137         /* Set or clear the output [in this case show or hide the '*' character. */\r
 138         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 139         {\r
 140                 vTaskSuspendAll();\r
 141                 {\r
 142                         if( xValue )\r
 143                         {\r
 144                                 /* Turn on the segments required to show the '*'. */\r
 145                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 146                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 147                         }\r
 148                         else\r
 149                         {\r
 150                                 /* Turn off all the segments. */\r
 151                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 152                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 153                         }\r
 154                 }\r
 155                 xTaskResumeAll();\r
 156         }\r
 157 }\r
 158 /*-----------------------------------------------------------*/\r
 159 \r
 160 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 161 {\r
 162         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 163         {\r
 164                 vTaskSuspendAll();\r
 165                 {\r
 166                         /* If the '*' is already showing - hide it.  If it is not already\r
 167                         showing then show it. */\r
 168                         if( *( ucRHSSegments[ uxLED ] ) )\r
 169                         {\r
 170                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 171                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 172                         }\r
 173                         else\r
 174                         {\r
 175                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 176                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 177                         }\r
 178                 }\r
 179                 xTaskResumeAll();\r
 180         }\r
 181         else\r
 182         {\r
 183                 if( uxLED == partstON_BOARD_LED )\r
 184                 {\r
 185                         /* The request related to the genuine on board LED. */\r
 186                         prvToggleOnBoardLED();\r
 187                 }\r
 188         }       \r
 189 }\r
 190 /*-----------------------------------------------------------*/\r
 191 \r
 192 static void prvToggleOnBoardLED( void )\r
 193 {\r
 194 static unsigned portSHORT sState = pdFALSE;\r
 195 \r
 196         /* Toggle the state of the single genuine on board LED. */\r
 197         if( sState )    \r
 198         {\r
 199                 P1OUT |= mainON_BOARD_LED_BIT;\r
 200         }\r
 201         else\r
 202         {\r
 203                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 204         }\r
 205 \r
 206         sState = !sState;\r
 207 }\r
 208 /*-----------------------------------------------------------*/\r
 209 \r
 210 \r