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

   1 /*\r
   2     FreeRTOS V7.3.0 - Copyright (C) 2012 Real Time Engineers Ltd.\r
   3 \r
   4     FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME.  PLEASE VISIT \r
   5     http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
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  16      *    the FreeRTOS project to continue with its mission of providing     *\r
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  23      *                                                                       *\r
  24     ***************************************************************************\r
  25 \r
  26 \r
  27     This file is part of the FreeRTOS distribution.\r
  28 \r
  29     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  30     the terms of the GNU General Public License (version 2) as published by the\r
  31     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  32     >>>NOTE<<< The modification to the GPL is included to allow you to\r
  33     distribute a combined work that includes FreeRTOS without being obliged to\r
  34     provide the source code for proprietary components outside of the FreeRTOS\r
  35     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
  36     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
  37     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  38     more details. You should have received a copy of the GNU General Public\r
  39     License and the FreeRTOS license exception along with FreeRTOS; if not it\r
  40     can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
  41     by writing to Richard Barry, contact details for whom are available on the\r
  42     FreeRTOS WEB site.\r
  43 \r
  44     1 tab == 4 spaces!\r
  45     \r
  46     ***************************************************************************\r
  47      *                                                                       *\r
  48      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  49      *    not run, what could be wrong?"                                     *\r
  50      *                                                                       *\r
  51      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  52      *                                                                       *\r
  53     ***************************************************************************\r
  54 \r
  55     \r
  56     http://www.FreeRTOS.org - Documentation, training, latest versions, license \r
  57     and contact details.  \r
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  59     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
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  61 \r
  62     Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell \r
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  66     the SafeRTOS brand: http://www.SafeRTOS.com.\r
  67 */\r
  68 \r
  69 /*-----------------------------------------------------------\r
  70  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  71  * is really operating on the LCD display.\r
  72  *-----------------------------------------------------------*/\r
  73 \r
  74 /*\r
  75  * This demo is configured to execute on the ES449 prototyping board from\r
  76  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  77  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  78  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  79  * next LED 1, etc.\r
  80  *\r
  81  * There is a single genuine on board LED referenced as LED 10.\r
  82  */\r
  83 \r
  84 \r
  85 /* Scheduler includes. */\r
  86 #include "FreeRTOS.h"\r
  87 #include "task.h"\r
  88 \r
  89 /* Demo application includes. */\r
  90 #include "partest.h"\r
  91 \r
  92 /* Constants required to setup the LCD. */\r
  93 #define LCD_DIV_64 5\r
  94 \r
  95 /* Constants required to access the "LED's".  The LED segments are turned on\r
  96 and off to generate '*' characters. */\r
  97 #define partstNUM_LEDS                  ( ( unsigned char ) 6 )\r
  98 #define partstSEGMENTS_ON               ( ( unsigned char ) 0x0f )\r
  99 #define partstSEGMENTS_OFF              ( ( unsigned char ) 0x00 )\r
 100 \r
 101 /* The LED number of the real on board LED, rather than a simulated LED. */\r
 102 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
 103 #define mainON_BOARD_LED_BIT    ( ( unsigned char ) 0x01 )\r
 104 \r
 105 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
 106 unsigned char * const ucRHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa4, \r
 107                                                                                                                                 ( unsigned char * )0xa2, \r
 108                                                                                                                                 ( unsigned char * )0xa0, \r
 109                                                                                                                                 ( unsigned char * )0x9e,\r
 110                                                                                                                                 ( unsigned char * )0x9c,\r
 111                                                                                                                                 ( unsigned char * )0x9a };\r
 112 \r
 113 unsigned char * const ucLHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa3, \r
 114                                                                                                                                 ( unsigned char * )0xa1, \r
 115                                                                                                                                 ( unsigned char * )0x9f, \r
 116                                                                                                                                 ( unsigned char * )0x9d,\r
 117                                                                                                                                 ( unsigned char * )0x9b,\r
 118                                                                                                                                 ( unsigned char * )0x99 };\r
 119 \r
 120 /*\r
 121  * Toggle the single genuine built in LED.\r
 122  */\r
 123 static void prvToggleOnBoardLED( void );\r
 124 \r
 125 /*-----------------------------------------------------------*/\r
 126 \r
 127 void vParTestInitialise( void )\r
 128 {\r
 129         /* Initialise the LCD hardware. */\r
 130 \r
 131         /* Used for the onboard LED. */\r
 132         P1DIR = 0x01;\r
 133 \r
 134         // Setup Basic Timer for LCD operation\r
 135         BTCTL = (LCD_DIV_64+0x23);\r
 136 \r
 137         // Setup port functions\r
 138         P1SEL = 0x32;\r
 139         P2SEL = 0x00;\r
 140         P3SEL = 0x00;\r
 141         P4SEL = 0xFC;\r
 142         P5SEL = 0xFF;\r
 143         \r
 144         /* Initialise all segments to off. */\r
 145         LCDM1 = partstSEGMENTS_OFF;     \r
 146         LCDM2 = partstSEGMENTS_OFF;     \r
 147         LCDM3 = partstSEGMENTS_OFF;     \r
 148         LCDM4 = partstSEGMENTS_OFF;     \r
 149         LCDM5 = partstSEGMENTS_OFF;     \r
 150         LCDM6 = partstSEGMENTS_OFF;     \r
 151         LCDM7 = partstSEGMENTS_OFF;     \r
 152         LCDM8 = partstSEGMENTS_OFF;     \r
 153         LCDM9 = partstSEGMENTS_OFF;     \r
 154         LCDM10 = partstSEGMENTS_OFF;    \r
 155         LCDM11 = partstSEGMENTS_OFF;    \r
 156         LCDM12 = partstSEGMENTS_OFF;    \r
 157         LCDM13 = partstSEGMENTS_OFF;    \r
 158         LCDM14 = partstSEGMENTS_OFF;    \r
 159         LCDM15 = partstSEGMENTS_OFF;    \r
 160         LCDM16 = partstSEGMENTS_OFF;    \r
 161         LCDM17 = partstSEGMENTS_OFF;    \r
 162         LCDM18 = partstSEGMENTS_OFF;    \r
 163         LCDM19 = partstSEGMENTS_OFF;    \r
 164         LCDM20 = partstSEGMENTS_OFF;    \r
 165 \r
 166         /* Setup LCD control. */\r
 167         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 168 }\r
 169 /*-----------------------------------------------------------*/\r
 170 \r
 171 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 172 {\r
 173         /* Set or clear the output [in this case show or hide the '*' character. */\r
 174         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 175         {\r
 176                 vTaskSuspendAll();\r
 177                 {\r
 178                         if( xValue )\r
 179                         {\r
 180                                 /* Turn on the segments required to show the '*'. */\r
 181                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 182                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 183                         }\r
 184                         else\r
 185                         {\r
 186                                 /* Turn off all the segments. */\r
 187                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 188                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 189                         }\r
 190                 }\r
 191                 xTaskResumeAll();\r
 192         }\r
 193 }\r
 194 /*-----------------------------------------------------------*/\r
 195 \r
 196 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 197 {\r
 198         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 199         {\r
 200                 vTaskSuspendAll();\r
 201                 {\r
 202                         /* If the '*' is already showing - hide it.  If it is not already\r
 203                         showing then show it. */\r
 204                         if( *( ucRHSSegments[ uxLED ] ) )\r
 205                         {\r
 206                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 207                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 208                         }\r
 209                         else\r
 210                         {\r
 211                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 212                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 213                         }\r
 214                 }\r
 215                 xTaskResumeAll();\r
 216         }\r
 217         else\r
 218         {\r
 219                 if( uxLED == partstON_BOARD_LED )\r
 220                 {\r
 221                         /* The request related to the genuine on board LED. */\r
 222                         prvToggleOnBoardLED();\r
 223                 }\r
 224         }       \r
 225 }\r
 226 /*-----------------------------------------------------------*/\r
 227 \r
 228 static void prvToggleOnBoardLED( void )\r
 229 {\r
 230 static unsigned short sState = pdFALSE;\r
 231 \r
 232         /* Toggle the state of the single genuine on board LED. */\r
 233         if( sState )    \r
 234         {\r
 235                 P1OUT |= mainON_BOARD_LED_BIT;\r
 236         }\r
 237         else\r
 238         {\r
 239                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 240         }\r
 241 \r
 242         sState = !sState;\r
 243 }\r
 244 /*-----------------------------------------------------------*/\r
 245 \r
 246 \r