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

   1 /*\r
   2         FreeRTOS V4.0.1 - Copyright (C) 2003-2006 Richard Barry.\r
   3 \r
   4         This file is part of the FreeRTOS distribution.\r
   5 \r
   6         FreeRTOS 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 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; 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, 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 /* Standard includes. */\r
  49 #include <signal.h>\r
  50 \r
  51 /* Scheduler includes. */\r
  52 #include "FreeRTOS.h"\r
  53 #include "task.h"\r
  54 \r
  55 /* Demo application includes. */\r
  56 #include "partest.h"\r
  57 \r
  58 /* Constants required to setup the LCD. */\r
  59 #define LCD_DIV_64 5\r
  60 \r
  61 /* Constants required to access the "LED's".  The LED segments are turned on\r
  62 and off to generate '*' characters. */\r
  63 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  64 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  65 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  66 \r
  67 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  68 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  69 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  70 \r
  71 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  72 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  73                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  74                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  75                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  76                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  77                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  78 \r
  79 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  80                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  81                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  82                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  83                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  84                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  85 \r
  86 /*\r
  87  * Toggle the single genuine built in LED.\r
  88  */\r
  89 static void prvToggleOnBoardLED( void );\r
  90 \r
  91 /*-----------------------------------------------------------*/\r
  92 \r
  93 void vParTestInitialise( void )\r
  94 {\r
  95         /* Initialise the LCD hardware. */\r
  96 \r
  97         /* Used for the onboard LED. */\r
  98         P1DIR = 0x01;\r
  99 \r
 100         // Setup Basic Timer for LCD operation\r
 101         BTCTL = (LCD_DIV_64+0x23);\r
 102 \r
 103         // Setup port functions\r
 104         P1SEL = 0x32;\r
 105         P2SEL = 0x00;\r
 106         P3SEL = 0x00;\r
 107         P4SEL = 0xFC;\r
 108         P5SEL = 0xFF;\r
 109         \r
 110         /* Initialise all segments to off. */\r
 111         LCDM1 = partstSEGMENTS_OFF;     \r
 112         LCDM2 = partstSEGMENTS_OFF;     \r
 113         LCDM3 = partstSEGMENTS_OFF;     \r
 114         LCDM4 = partstSEGMENTS_OFF;     \r
 115         LCDM5 = partstSEGMENTS_OFF;     \r
 116         LCDM6 = partstSEGMENTS_OFF;     \r
 117         LCDM7 = partstSEGMENTS_OFF;     \r
 118         LCDM8 = partstSEGMENTS_OFF;     \r
 119         LCDM9 = partstSEGMENTS_OFF;     \r
 120         LCDM10 = partstSEGMENTS_OFF;    \r
 121         LCDM11 = partstSEGMENTS_OFF;    \r
 122         LCDM12 = partstSEGMENTS_OFF;    \r
 123         LCDM13 = partstSEGMENTS_OFF;    \r
 124         LCDM14 = partstSEGMENTS_OFF;    \r
 125         LCDM15 = partstSEGMENTS_OFF;    \r
 126         LCDM16 = partstSEGMENTS_OFF;    \r
 127         LCDM17 = partstSEGMENTS_OFF;    \r
 128         LCDM18 = partstSEGMENTS_OFF;    \r
 129         LCDM19 = partstSEGMENTS_OFF;    \r
 130         LCDM20 = partstSEGMENTS_OFF;    \r
 131 \r
 132         /* Setup LCD control. */\r
 133         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 134 }\r
 135 /*-----------------------------------------------------------*/\r
 136 \r
 137 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 138 {\r
 139         /* Set or clear the output [in this case show or hide the '*' character. */\r
 140         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 141         {\r
 142                 vTaskSuspendAll();\r
 143                 {\r
 144                         if( xValue )\r
 145                         {\r
 146                                 /* Turn on the segments required to show the '*'. */\r
 147                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 148                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 149                         }\r
 150                         else\r
 151                         {\r
 152                                 /* Turn off all the segments. */\r
 153                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 154                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 155                         }\r
 156                 }\r
 157                 xTaskResumeAll();\r
 158         }\r
 159 }\r
 160 /*-----------------------------------------------------------*/\r
 161 \r
 162 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 163 {\r
 164         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 165         {\r
 166                 vTaskSuspendAll();\r
 167                 {\r
 168                         /* If the '*' is already showing - hide it.  If it is not already\r
 169                         showing then show it. */\r
 170                         if( *( ucRHSSegments[ uxLED ] ) )\r
 171                         {\r
 172                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 173                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 174                         }\r
 175                         else\r
 176                         {\r
 177                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 178                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 179                         }\r
 180                 }\r
 181                 xTaskResumeAll();\r
 182         }\r
 183         else\r
 184         {\r
 185                 if( uxLED == partstON_BOARD_LED )\r
 186                 {\r
 187                         /* The request related to the genuine on board LED. */\r
 188                         prvToggleOnBoardLED();\r
 189                 }\r
 190         }       \r
 191 }\r
 192 /*-----------------------------------------------------------*/\r
 193 \r
 194 static void prvToggleOnBoardLED( void )\r
 195 {\r
 196 static unsigned portSHORT sState = pdFALSE;\r
 197 \r
 198         /* Toggle the state of the single genuine on board LED. */\r
 199         if( sState )    \r
 200         {\r
 201                 P1OUT |= mainON_BOARD_LED_BIT;\r
 202         }\r
 203         else\r
 204         {\r
 205                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 206         }\r
 207 \r
 208         sState = !sState;\r
 209 }\r
 210 /*-----------------------------------------------------------*/\r
 211 \r
 212 \r