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

   1 /*\r
   2         FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 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     ***************************************************************************\r
  28     *                                                                         *\r
  29     * Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *\r
  30         *                                                                         *\r
  31         * This is a concise, step by step, 'hands on' guide that describes both   *\r
  32         * general multitasking concepts and FreeRTOS specifics. It presents and   *\r
  33         * explains numerous examples that are written using the FreeRTOS API.     *\r
  34         * Full source code for all the examples is provided in an accompanying    *\r
  35         * .zip file.                                                              *\r
  36     *                                                                         *\r
  37     ***************************************************************************\r
  38     ***************************************************************************\r
  39 \r
  40         Please ensure to read the configuration and relevant port sections of the\r
  41         online documentation.\r
  42 \r
  43         http://www.FreeRTOS.org - Documentation, latest information, license and \r
  44         contact details.\r
  45 \r
  46         http://www.SafeRTOS.com - A version that is certified for use in safety \r
  47         critical systems.\r
  48 \r
  49         http://www.OpenRTOS.com - Commercial support, development, porting, \r
  50         licensing and training services.\r
  51 */\r
  52 \r
  53 /*-----------------------------------------------------------\r
  54  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  55  * is really operating on the LCD display.\r
  56  *-----------------------------------------------------------*/\r
  57 \r
  58 /*\r
  59  * This demo is configured to execute on the ES449 prototyping board from\r
  60  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  61  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  62  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  63  * next LED 1, etc.\r
  64  *\r
  65  * There is a single genuine on board LED referenced as LED 10.\r
  66  */\r
  67 \r
  68 /* Standard includes. */\r
  69 #include <signal.h>\r
  70 \r
  71 /* Scheduler includes. */\r
  72 #include "FreeRTOS.h"\r
  73 #include "task.h"\r
  74 \r
  75 /* Demo application includes. */\r
  76 #include "partest.h"\r
  77 \r
  78 /* Constants required to setup the LCD. */\r
  79 #define LCD_DIV_64 5\r
  80 \r
  81 /* Constants required to access the "LED's".  The LED segments are turned on\r
  82 and off to generate '*' characters. */\r
  83 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  84 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  85 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  86 \r
  87 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  88 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  89 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  90 \r
  91 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  92 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  93                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  94                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  95                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  96                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  97                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  98 \r
  99 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
 100                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
 101                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
 102                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
 103                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
 104                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
 105 \r
 106 /*\r
 107  * Toggle the single genuine built in LED.\r
 108  */\r
 109 static void prvToggleOnBoardLED( void );\r
 110 \r
 111 /*-----------------------------------------------------------*/\r
 112 \r
 113 void vParTestInitialise( void )\r
 114 {\r
 115         /* Initialise the LCD hardware. */\r
 116 \r
 117         /* Used for the onboard LED. */\r
 118         P1DIR = 0x01;\r
 119 \r
 120         // Setup Basic Timer for LCD operation\r
 121         BTCTL = (LCD_DIV_64+0x23);\r
 122 \r
 123         // Setup port functions\r
 124         P1SEL = 0x32;\r
 125         P2SEL = 0x00;\r
 126         P3SEL = 0x00;\r
 127         P4SEL = 0xFC;\r
 128         P5SEL = 0xFF;\r
 129         \r
 130         /* Initialise all segments to off. */\r
 131         LCDM1 = partstSEGMENTS_OFF;     \r
 132         LCDM2 = partstSEGMENTS_OFF;     \r
 133         LCDM3 = partstSEGMENTS_OFF;     \r
 134         LCDM4 = partstSEGMENTS_OFF;     \r
 135         LCDM5 = partstSEGMENTS_OFF;     \r
 136         LCDM6 = partstSEGMENTS_OFF;     \r
 137         LCDM7 = partstSEGMENTS_OFF;     \r
 138         LCDM8 = partstSEGMENTS_OFF;     \r
 139         LCDM9 = partstSEGMENTS_OFF;     \r
 140         LCDM10 = partstSEGMENTS_OFF;    \r
 141         LCDM11 = partstSEGMENTS_OFF;    \r
 142         LCDM12 = partstSEGMENTS_OFF;    \r
 143         LCDM13 = partstSEGMENTS_OFF;    \r
 144         LCDM14 = partstSEGMENTS_OFF;    \r
 145         LCDM15 = partstSEGMENTS_OFF;    \r
 146         LCDM16 = partstSEGMENTS_OFF;    \r
 147         LCDM17 = partstSEGMENTS_OFF;    \r
 148         LCDM18 = partstSEGMENTS_OFF;    \r
 149         LCDM19 = partstSEGMENTS_OFF;    \r
 150         LCDM20 = partstSEGMENTS_OFF;    \r
 151 \r
 152         /* Setup LCD control. */\r
 153         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 154 }\r
 155 /*-----------------------------------------------------------*/\r
 156 \r
 157 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 158 {\r
 159         /* Set or clear the output [in this case show or hide the '*' character. */\r
 160         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 161         {\r
 162                 vTaskSuspendAll();\r
 163                 {\r
 164                         if( xValue )\r
 165                         {\r
 166                                 /* Turn on the segments required to show the '*'. */\r
 167                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 168                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 169                         }\r
 170                         else\r
 171                         {\r
 172                                 /* Turn off all the segments. */\r
 173                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 174                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 175                         }\r
 176                 }\r
 177                 xTaskResumeAll();\r
 178         }\r
 179 }\r
 180 /*-----------------------------------------------------------*/\r
 181 \r
 182 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 183 {\r
 184         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 185         {\r
 186                 vTaskSuspendAll();\r
 187                 {\r
 188                         /* If the '*' is already showing - hide it.  If it is not already\r
 189                         showing then show it. */\r
 190                         if( *( ucRHSSegments[ uxLED ] ) )\r
 191                         {\r
 192                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 193                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 194                         }\r
 195                         else\r
 196                         {\r
 197                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 198                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 199                         }\r
 200                 }\r
 201                 xTaskResumeAll();\r
 202         }\r
 203         else\r
 204         {\r
 205                 if( uxLED == partstON_BOARD_LED )\r
 206                 {\r
 207                         /* The request related to the genuine on board LED. */\r
 208                         prvToggleOnBoardLED();\r
 209                 }\r
 210         }       \r
 211 }\r
 212 /*-----------------------------------------------------------*/\r
 213 \r
 214 static void prvToggleOnBoardLED( void )\r
 215 {\r
 216 static unsigned portSHORT sState = pdFALSE;\r
 217 \r
 218         /* Toggle the state of the single genuine on board LED. */\r
 219         if( sState )    \r
 220         {\r
 221                 P1OUT |= mainON_BOARD_LED_BIT;\r
 222         }\r
 223         else\r
 224         {\r
 225                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 226         }\r
 227 \r
 228         sState = !sState;\r
 229 }\r
 230 /*-----------------------------------------------------------*/\r
 231 \r
 232 \r