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

   1 /*\r
   2     FreeRTOS V7.2.0 - Copyright (C) 2012 Real Time Engineers Ltd.\r
   3         \r
   4 \r
   5     ***************************************************************************\r
   6      *                                                                       *\r
   7      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
   8      *    Complete, revised, and edited pdf reference manuals are also       *\r
   9      *    available.                                                         *\r
  10      *                                                                       *\r
  11      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  12      *    ensuring you get running as quickly as possible and with an        *\r
  13      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  14      *    the FreeRTOS project to continue with its mission of providing     *\r
  15      *    professional grade, cross platform, de facto standard solutions    *\r
  16      *    for microcontrollers - completely free of charge!                  *\r
  17      *                                                                       *\r
  18      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
  19      *                                                                       *\r
  20      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  21      *                                                                       *\r
  22     ***************************************************************************\r
  23 \r
  24 \r
  25     This file is part of the FreeRTOS distribution.\r
  26 \r
  27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  28     the terms of the GNU General Public License (version 2) as published by the\r
  29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  30     >>>NOTE<<< The modification to the GPL is included to allow you to\r
  31     distribute a combined work that includes FreeRTOS without being obliged to\r
  32     provide the source code for proprietary components outside of the FreeRTOS\r
  33     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
  34     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
  35     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  36     more details. You should have received a copy of the GNU General Public\r
  37     License and the FreeRTOS license exception along with FreeRTOS; if not it\r
  38     can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
  39     by writing to Richard Barry, contact details for whom are available on the\r
  40     FreeRTOS WEB site.\r
  41 \r
  42     1 tab == 4 spaces!\r
  43     \r
  44     ***************************************************************************\r
  45      *                                                                       *\r
  46      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  47      *    not run, what could be wrong?                                      *\r
  48      *                                                                       *\r
  49      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  50      *                                                                       *\r
  51     ***************************************************************************\r
  52 \r
  53     \r
  54     http://www.FreeRTOS.org - Documentation, training, latest information, \r
  55     license and contact details.\r
  56     \r
  57     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  58     including FreeRTOS+Trace - an indispensable productivity tool.\r
  59 \r
  60     Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell \r
  61     the code with commercial support, indemnification, and middleware, under \r
  62     the OpenRTOS brand: http://www.OpenRTOS.com.  High Integrity Systems also\r
  63     provide a safety engineered and independently SIL3 certified version under \r
  64     the SafeRTOS brand: http://www.SafeRTOS.com.\r
  65 */\r
  66 \r
  67 /*-----------------------------------------------------------\r
  68  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  69  * is really operating on the LCD display.\r
  70  *-----------------------------------------------------------*/\r
  71 \r
  72 /*\r
  73  * This demo is configured to execute on the ES449 prototyping board from\r
  74  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  75  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  76  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  77  * next LED 1, etc.\r
  78  *\r
  79  * There is a single genuine on board LED referenced as LED 10.\r
  80  */\r
  81 \r
  82 \r
  83 /* Scheduler includes. */\r
  84 #include "FreeRTOS.h"\r
  85 #include "task.h"\r
  86 \r
  87 /* Demo application includes. */\r
  88 #include "partest.h"\r
  89 \r
  90 /* Constants required to setup the LCD. */\r
  91 #define LCD_DIV_64 5\r
  92 \r
  93 /* Constants required to access the "LED's".  The LED segments are turned on\r
  94 and off to generate '*' characters. */\r
  95 #define partstNUM_LEDS                  ( ( unsigned char ) 6 )\r
  96 #define partstSEGMENTS_ON               ( ( unsigned char ) 0x0f )\r
  97 #define partstSEGMENTS_OFF              ( ( unsigned char ) 0x00 )\r
  98 \r
  99 /* The LED number of the real on board LED, rather than a simulated LED. */\r
 100 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
 101 #define mainON_BOARD_LED_BIT    ( ( unsigned char ) 0x01 )\r
 102 \r
 103 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
 104 unsigned char * const ucRHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa4, \r
 105                                                                                                                                 ( unsigned char * )0xa2, \r
 106                                                                                                                                 ( unsigned char * )0xa0, \r
 107                                                                                                                                 ( unsigned char * )0x9e,\r
 108                                                                                                                                 ( unsigned char * )0x9c,\r
 109                                                                                                                                 ( unsigned char * )0x9a };\r
 110 \r
 111 unsigned char * const ucLHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa3, \r
 112                                                                                                                                 ( unsigned char * )0xa1, \r
 113                                                                                                                                 ( unsigned char * )0x9f, \r
 114                                                                                                                                 ( unsigned char * )0x9d,\r
 115                                                                                                                                 ( unsigned char * )0x9b,\r
 116                                                                                                                                 ( unsigned char * )0x99 };\r
 117 \r
 118 /*\r
 119  * Toggle the single genuine built in LED.\r
 120  */\r
 121 static void prvToggleOnBoardLED( void );\r
 122 \r
 123 /*-----------------------------------------------------------*/\r
 124 \r
 125 void vParTestInitialise( void )\r
 126 {\r
 127         /* Initialise the LCD hardware. */\r
 128 \r
 129         /* Used for the onboard LED. */\r
 130         P1DIR = 0x01;\r
 131 \r
 132         // Setup Basic Timer for LCD operation\r
 133         BTCTL = (LCD_DIV_64+0x23);\r
 134 \r
 135         // Setup port functions\r
 136         P1SEL = 0x32;\r
 137         P2SEL = 0x00;\r
 138         P3SEL = 0x00;\r
 139         P4SEL = 0xFC;\r
 140         P5SEL = 0xFF;\r
 141         \r
 142         /* Initialise all segments to off. */\r
 143         LCDM1 = partstSEGMENTS_OFF;     \r
 144         LCDM2 = partstSEGMENTS_OFF;     \r
 145         LCDM3 = partstSEGMENTS_OFF;     \r
 146         LCDM4 = partstSEGMENTS_OFF;     \r
 147         LCDM5 = partstSEGMENTS_OFF;     \r
 148         LCDM6 = partstSEGMENTS_OFF;     \r
 149         LCDM7 = partstSEGMENTS_OFF;     \r
 150         LCDM8 = partstSEGMENTS_OFF;     \r
 151         LCDM9 = partstSEGMENTS_OFF;     \r
 152         LCDM10 = partstSEGMENTS_OFF;    \r
 153         LCDM11 = partstSEGMENTS_OFF;    \r
 154         LCDM12 = partstSEGMENTS_OFF;    \r
 155         LCDM13 = partstSEGMENTS_OFF;    \r
 156         LCDM14 = partstSEGMENTS_OFF;    \r
 157         LCDM15 = partstSEGMENTS_OFF;    \r
 158         LCDM16 = partstSEGMENTS_OFF;    \r
 159         LCDM17 = partstSEGMENTS_OFF;    \r
 160         LCDM18 = partstSEGMENTS_OFF;    \r
 161         LCDM19 = partstSEGMENTS_OFF;    \r
 162         LCDM20 = partstSEGMENTS_OFF;    \r
 163 \r
 164         /* Setup LCD control. */\r
 165         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 166 }\r
 167 /*-----------------------------------------------------------*/\r
 168 \r
 169 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 170 {\r
 171         /* Set or clear the output [in this case show or hide the '*' character. */\r
 172         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 173         {\r
 174                 vTaskSuspendAll();\r
 175                 {\r
 176                         if( xValue )\r
 177                         {\r
 178                                 /* Turn on the segments required to show the '*'. */\r
 179                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 180                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 181                         }\r
 182                         else\r
 183                         {\r
 184                                 /* Turn off all the segments. */\r
 185                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 186                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 187                         }\r
 188                 }\r
 189                 xTaskResumeAll();\r
 190         }\r
 191 }\r
 192 /*-----------------------------------------------------------*/\r
 193 \r
 194 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 195 {\r
 196         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 197         {\r
 198                 vTaskSuspendAll();\r
 199                 {\r
 200                         /* If the '*' is already showing - hide it.  If it is not already\r
 201                         showing then show it. */\r
 202                         if( *( ucRHSSegments[ uxLED ] ) )\r
 203                         {\r
 204                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 205                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 206                         }\r
 207                         else\r
 208                         {\r
 209                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 210                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 211                         }\r
 212                 }\r
 213                 xTaskResumeAll();\r
 214         }\r
 215         else\r
 216         {\r
 217                 if( uxLED == partstON_BOARD_LED )\r
 218                 {\r
 219                         /* The request related to the genuine on board LED. */\r
 220                         prvToggleOnBoardLED();\r
 221                 }\r
 222         }       \r
 223 }\r
 224 /*-----------------------------------------------------------*/\r
 225 \r
 226 static void prvToggleOnBoardLED( void )\r
 227 {\r
 228 static unsigned short sState = pdFALSE;\r
 229 \r
 230         /* Toggle the state of the single genuine on board LED. */\r
 231         if( sState )    \r
 232         {\r
 233                 P1OUT |= mainON_BOARD_LED_BIT;\r
 234         }\r
 235         else\r
 236         {\r
 237                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 238         }\r
 239 \r
 240         sState = !sState;\r
 241 }\r
 242 /*-----------------------------------------------------------*/\r
 243 \r
 244 \r