git.sur5r.net Git - freertos/blob - Demo/msp430_CrossWorks/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 \r
  53 /* Scheduler includes. */\r
  54 #include "FreeRTOS.h"\r
  55 #include "task.h"\r
  56 \r
  57 /* Demo application includes. */\r
  58 #include "partest.h"\r
  59 \r
  60 /* Constants required to setup the LCD. */\r
  61 #define LCD_DIV_64 5\r
  62 \r
  63 /* Constants required to access the "LED's".  The LED segments are turned on\r
  64 and off to generate '*' characters. */\r
  65 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  66 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  67 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  68 \r
  69 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  70 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  71 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  72 \r
  73 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  74 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  75                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  76                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  77                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  78                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  79                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  80 \r
  81 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  82                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  83                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  84                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  85                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  86                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  87 \r
  88 /*\r
  89  * Toggle the single genuine built in LED.\r
  90  */\r
  91 static void prvToggleOnBoardLED( void );\r
  92 \r
  93 /*-----------------------------------------------------------*/\r
  94 \r
  95 void vParTestInitialise( void )\r
  96 {\r
  97         /* Initialise the LCD hardware. */\r
  98 \r
  99         /* Used for the onboard LED. */\r
 100         P1DIR = 0x01;\r
 101 \r
 102         // Setup Basic Timer for LCD operation\r
 103         BTCTL = (LCD_DIV_64+0x23);\r
 104 \r
 105         // Setup port functions\r
 106         P1SEL = 0x32;\r
 107         P2SEL = 0x00;\r
 108         P3SEL = 0x00;\r
 109         P4SEL = 0xFC;\r
 110         P5SEL = 0xFF;\r
 111         \r
 112         /* Initialise all segments to off. */\r
 113         LCDM1 = partstSEGMENTS_OFF;     \r
 114         LCDM2 = partstSEGMENTS_OFF;     \r
 115         LCDM3 = partstSEGMENTS_OFF;     \r
 116         LCDM4 = partstSEGMENTS_OFF;     \r
 117         LCDM5 = partstSEGMENTS_OFF;     \r
 118         LCDM6 = partstSEGMENTS_OFF;     \r
 119         LCDM7 = partstSEGMENTS_OFF;     \r
 120         LCDM8 = partstSEGMENTS_OFF;     \r
 121         LCDM9 = partstSEGMENTS_OFF;     \r
 122         LCDM10 = partstSEGMENTS_OFF;    \r
 123         LCDM11 = partstSEGMENTS_OFF;    \r
 124         LCDM12 = partstSEGMENTS_OFF;    \r
 125         LCDM13 = partstSEGMENTS_OFF;    \r
 126         LCDM14 = partstSEGMENTS_OFF;    \r
 127         LCDM15 = partstSEGMENTS_OFF;    \r
 128         LCDM16 = partstSEGMENTS_OFF;    \r
 129         LCDM17 = partstSEGMENTS_OFF;    \r
 130         LCDM18 = partstSEGMENTS_OFF;    \r
 131         LCDM19 = partstSEGMENTS_OFF;    \r
 132         LCDM20 = partstSEGMENTS_OFF;    \r
 133 \r
 134         /* Setup LCD control. */\r
 135         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 136 }\r
 137 /*-----------------------------------------------------------*/\r
 138 \r
 139 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 140 {\r
 141         /* Set or clear the output [in this case show or hide the '*' character. */\r
 142         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 143         {\r
 144                 vTaskSuspendAll();\r
 145                 {\r
 146                         if( xValue )\r
 147                         {\r
 148                                 /* Turn on the segments required to show the '*'. */\r
 149                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 150                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 151                         }\r
 152                         else\r
 153                         {\r
 154                                 /* Turn off all the segments. */\r
 155                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 156                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 157                         }\r
 158                 }\r
 159                 xTaskResumeAll();\r
 160         }\r
 161 }\r
 162 /*-----------------------------------------------------------*/\r
 163 \r
 164 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 165 {\r
 166         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 167         {\r
 168                 vTaskSuspendAll();\r
 169                 {\r
 170                         /* If the '*' is already showing - hide it.  If it is not already\r
 171                         showing then show it. */\r
 172                         if( *( ucRHSSegments[ uxLED ] ) )\r
 173                         {\r
 174                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 175                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 176                         }\r
 177                         else\r
 178                         {\r
 179                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 180                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 181                         }\r
 182                 }\r
 183                 xTaskResumeAll();\r
 184         }\r
 185         else\r
 186         {\r
 187                 if( uxLED == partstON_BOARD_LED )\r
 188                 {\r
 189                         /* The request related to the genuine on board LED. */\r
 190                         prvToggleOnBoardLED();\r
 191                 }\r
 192         }       \r
 193 }\r
 194 /*-----------------------------------------------------------*/\r
 195 \r
 196 static void prvToggleOnBoardLED( void )\r
 197 {\r
 198 static unsigned portSHORT sState = pdFALSE;\r
 199 \r
 200         /* Toggle the state of the single genuine on board LED. */\r
 201         if( sState )    \r
 202         {\r
 203                 P1OUT |= mainON_BOARD_LED_BIT;\r
 204         }\r
 205         else\r
 206         {\r
 207                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 208         }\r
 209 \r
 210         sState = !sState;\r
 211 }\r
 212 /*-----------------------------------------------------------*/\r
 213 \r
 214 \r