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

   1 /*\r
   2         FreeRTOS.org V4.6.0 - 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 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 \r
  52 /* Scheduler includes. */\r
  53 #include "FreeRTOS.h"\r
  54 #include "task.h"\r
  55 \r
  56 /* Demo application includes. */\r
  57 #include "partest.h"\r
  58 \r
  59 /* Constants required to setup the LCD. */\r
  60 #define LCD_DIV_64 5\r
  61 \r
  62 /* Constants required to access the "LED's".  The LED segments are turned on\r
  63 and off to generate '*' characters. */\r
  64 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  65 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  66 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  67 \r
  68 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  69 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  70 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  71 \r
  72 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  73 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  74                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  75                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  76                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  77                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  78                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  79 \r
  80 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  81                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  82                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  83                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  84                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  85                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  86 \r
  87 /*\r
  88  * Toggle the single genuine built in LED.\r
  89  */\r
  90 static void prvToggleOnBoardLED( void );\r
  91 \r
  92 /*-----------------------------------------------------------*/\r
  93 \r
  94 void vParTestInitialise( void )\r
  95 {\r
  96         /* Initialise the LCD hardware. */\r
  97 \r
  98         /* Used for the onboard LED. */\r
  99         P1DIR = 0x01;\r
 100 \r
 101         // Setup Basic Timer for LCD operation\r
 102         BTCTL = (LCD_DIV_64+0x23);\r
 103 \r
 104         // Setup port functions\r
 105         P1SEL = 0x32;\r
 106         P2SEL = 0x00;\r
 107         P3SEL = 0x00;\r
 108         P4SEL = 0xFC;\r
 109         P5SEL = 0xFF;\r
 110         \r
 111         /* Initialise all segments to off. */\r
 112         LCDM1 = partstSEGMENTS_OFF;     \r
 113         LCDM2 = partstSEGMENTS_OFF;     \r
 114         LCDM3 = partstSEGMENTS_OFF;     \r
 115         LCDM4 = partstSEGMENTS_OFF;     \r
 116         LCDM5 = partstSEGMENTS_OFF;     \r
 117         LCDM6 = partstSEGMENTS_OFF;     \r
 118         LCDM7 = partstSEGMENTS_OFF;     \r
 119         LCDM8 = partstSEGMENTS_OFF;     \r
 120         LCDM9 = partstSEGMENTS_OFF;     \r
 121         LCDM10 = partstSEGMENTS_OFF;    \r
 122         LCDM11 = partstSEGMENTS_OFF;    \r
 123         LCDM12 = partstSEGMENTS_OFF;    \r
 124         LCDM13 = partstSEGMENTS_OFF;    \r
 125         LCDM14 = partstSEGMENTS_OFF;    \r
 126         LCDM15 = partstSEGMENTS_OFF;    \r
 127         LCDM16 = partstSEGMENTS_OFF;    \r
 128         LCDM17 = partstSEGMENTS_OFF;    \r
 129         LCDM18 = partstSEGMENTS_OFF;    \r
 130         LCDM19 = partstSEGMENTS_OFF;    \r
 131         LCDM20 = partstSEGMENTS_OFF;    \r
 132 \r
 133         /* Setup LCD control. */\r
 134         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 135 }\r
 136 /*-----------------------------------------------------------*/\r
 137 \r
 138 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 139 {\r
 140         /* Set or clear the output [in this case show or hide the '*' character. */\r
 141         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 142         {\r
 143                 vTaskSuspendAll();\r
 144                 {\r
 145                         if( xValue )\r
 146                         {\r
 147                                 /* Turn on the segments required to show the '*'. */\r
 148                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 149                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 150                         }\r
 151                         else\r
 152                         {\r
 153                                 /* Turn off all the segments. */\r
 154                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 155                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 156                         }\r
 157                 }\r
 158                 xTaskResumeAll();\r
 159         }\r
 160 }\r
 161 /*-----------------------------------------------------------*/\r
 162 \r
 163 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 164 {\r
 165         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 166         {\r
 167                 vTaskSuspendAll();\r
 168                 {\r
 169                         /* If the '*' is already showing - hide it.  If it is not already\r
 170                         showing then show it. */\r
 171                         if( *( ucRHSSegments[ uxLED ] ) )\r
 172                         {\r
 173                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 174                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 175                         }\r
 176                         else\r
 177                         {\r
 178                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 179                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 180                         }\r
 181                 }\r
 182                 xTaskResumeAll();\r
 183         }\r
 184         else\r
 185         {\r
 186                 if( uxLED == partstON_BOARD_LED )\r
 187                 {\r
 188                         /* The request related to the genuine on board LED. */\r
 189                         prvToggleOnBoardLED();\r
 190                 }\r
 191         }       \r
 192 }\r
 193 /*-----------------------------------------------------------*/\r
 194 \r
 195 static void prvToggleOnBoardLED( void )\r
 196 {\r
 197 static unsigned portSHORT sState = pdFALSE;\r
 198 \r
 199         /* Toggle the state of the single genuine on board LED. */\r
 200         if( sState )    \r
 201         {\r
 202                 P1OUT |= mainON_BOARD_LED_BIT;\r
 203         }\r
 204         else\r
 205         {\r
 206                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 207         }\r
 208 \r
 209         sState = !sState;\r
 210 }\r
 211 /*-----------------------------------------------------------*/\r
 212 \r
 213 \r