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

   1 /*\r
   2         FreeRTOS.org V5.2.0 - 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 it \r
   7         under the terms of the GNU General Public License (version 2) as published\r
   8         by the Free Software Foundation and modified by the FreeRTOS exception.\r
   9 \r
  10         FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT\r
  11         ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or \r
  12         FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for \r
  13         more details.\r
  14 \r
  15         You should have received a copy of the GNU General Public License along \r
  16         with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59 \r
  17         Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
  18 \r
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  20         combined work that includes FreeRTOS.org without being obliged to provide\r
  21         the source code for any proprietary components.  See the licensing section\r
  22         of http://www.FreeRTOS.org for full details.\r
  23 \r
  24 \r
  25         ***************************************************************************\r
  26         *                                                                         *\r
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  29         * This is a concise, step by step, 'hands on' guide that describes both   *\r
  30         * general multitasking concepts and FreeRTOS specifics. It presents and   *\r
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  32         * Full source code for all the examples is provided in an accompanying    *\r
  33         * .zip file.                                                              *\r
  34         *                                                                         *\r
  35         ***************************************************************************\r
  36 \r
  37         1 tab == 4 spaces!\r
  38 \r
  39         Please ensure to read the configuration and relevant port sections of the\r
  40         online documentation.\r
  41 \r
  42         http://www.FreeRTOS.org - Documentation, latest information, license and\r
  43         contact details.\r
  44 \r
  45         http://www.SafeRTOS.com - A version that is certified for use in safety\r
  46         critical systems.\r
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  48         http://www.OpenRTOS.com - Commercial support, development, porting,\r
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  50 */\r
  51 \r
  52 /*-----------------------------------------------------------\r
  53  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  54  * is really operating on the LCD display.\r
  55  *-----------------------------------------------------------*/\r
  56 \r
  57 /*\r
  58  * This demo is configured to execute on the ES449 prototyping board from\r
  59  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  60  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  61  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  62  * next LED 1, etc.\r
  63  *\r
  64  * There is a single genuine on board LED referenced as LED 10.\r
  65  */\r
  66 \r
  67 /* Standard includes. */\r
  68 #include <signal.h>\r
  69 \r
  70 /* Scheduler includes. */\r
  71 #include "FreeRTOS.h"\r
  72 #include "task.h"\r
  73 \r
  74 /* Demo application includes. */\r
  75 #include "partest.h"\r
  76 \r
  77 /* Constants required to setup the LCD. */\r
  78 #define LCD_DIV_64 5\r
  79 \r
  80 /* Constants required to access the "LED's".  The LED segments are turned on\r
  81 and off to generate '*' characters. */\r
  82 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  83 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  84 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  85 \r
  86 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  87 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  88 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  89 \r
  90 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  91 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  92                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  93                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  94                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  95                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  96                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  97 \r
  98 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  99                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
 100                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
 101                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
 102                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
 103                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
 104 \r
 105 /*\r
 106  * Toggle the single genuine built in LED.\r
 107  */\r
 108 static void prvToggleOnBoardLED( void );\r
 109 \r
 110 /*-----------------------------------------------------------*/\r
 111 \r
 112 void vParTestInitialise( void )\r
 113 {\r
 114         /* Initialise the LCD hardware. */\r
 115 \r
 116         /* Used for the onboard LED. */\r
 117         P1DIR = 0x01;\r
 118 \r
 119         // Setup Basic Timer for LCD operation\r
 120         BTCTL = (LCD_DIV_64+0x23);\r
 121 \r
 122         // Setup port functions\r
 123         P1SEL = 0x32;\r
 124         P2SEL = 0x00;\r
 125         P3SEL = 0x00;\r
 126         P4SEL = 0xFC;\r
 127         P5SEL = 0xFF;\r
 128         \r
 129         /* Initialise all segments to off. */\r
 130         LCDM1 = partstSEGMENTS_OFF;     \r
 131         LCDM2 = partstSEGMENTS_OFF;     \r
 132         LCDM3 = partstSEGMENTS_OFF;     \r
 133         LCDM4 = partstSEGMENTS_OFF;     \r
 134         LCDM5 = partstSEGMENTS_OFF;     \r
 135         LCDM6 = partstSEGMENTS_OFF;     \r
 136         LCDM7 = partstSEGMENTS_OFF;     \r
 137         LCDM8 = partstSEGMENTS_OFF;     \r
 138         LCDM9 = partstSEGMENTS_OFF;     \r
 139         LCDM10 = partstSEGMENTS_OFF;    \r
 140         LCDM11 = partstSEGMENTS_OFF;    \r
 141         LCDM12 = partstSEGMENTS_OFF;    \r
 142         LCDM13 = partstSEGMENTS_OFF;    \r
 143         LCDM14 = partstSEGMENTS_OFF;    \r
 144         LCDM15 = partstSEGMENTS_OFF;    \r
 145         LCDM16 = partstSEGMENTS_OFF;    \r
 146         LCDM17 = partstSEGMENTS_OFF;    \r
 147         LCDM18 = partstSEGMENTS_OFF;    \r
 148         LCDM19 = partstSEGMENTS_OFF;    \r
 149         LCDM20 = partstSEGMENTS_OFF;    \r
 150 \r
 151         /* Setup LCD control. */\r
 152         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 153 }\r
 154 /*-----------------------------------------------------------*/\r
 155 \r
 156 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 157 {\r
 158         /* Set or clear the output [in this case show or hide the '*' character. */\r
 159         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 160         {\r
 161                 vTaskSuspendAll();\r
 162                 {\r
 163                         if( xValue )\r
 164                         {\r
 165                                 /* Turn on the segments required to show the '*'. */\r
 166                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 167                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 168                         }\r
 169                         else\r
 170                         {\r
 171                                 /* Turn off all the segments. */\r
 172                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 173                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 174                         }\r
 175                 }\r
 176                 xTaskResumeAll();\r
 177         }\r
 178 }\r
 179 /*-----------------------------------------------------------*/\r
 180 \r
 181 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 182 {\r
 183         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 184         {\r
 185                 vTaskSuspendAll();\r
 186                 {\r
 187                         /* If the '*' is already showing - hide it.  If it is not already\r
 188                         showing then show it. */\r
 189                         if( *( ucRHSSegments[ uxLED ] ) )\r
 190                         {\r
 191                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 192                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 193                         }\r
 194                         else\r
 195                         {\r
 196                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 197                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 198                         }\r
 199                 }\r
 200                 xTaskResumeAll();\r
 201         }\r
 202         else\r
 203         {\r
 204                 if( uxLED == partstON_BOARD_LED )\r
 205                 {\r
 206                         /* The request related to the genuine on board LED. */\r
 207                         prvToggleOnBoardLED();\r
 208                 }\r
 209         }       \r
 210 }\r
 211 /*-----------------------------------------------------------*/\r
 212 \r
 213 static void prvToggleOnBoardLED( void )\r
 214 {\r
 215 static unsigned portSHORT sState = pdFALSE;\r
 216 \r
 217         /* Toggle the state of the single genuine on board LED. */\r
 218         if( sState )    \r
 219         {\r
 220                 P1OUT |= mainON_BOARD_LED_BIT;\r
 221         }\r
 222         else\r
 223         {\r
 224                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 225         }\r
 226 \r
 227         sState = !sState;\r
 228 }\r
 229 /*-----------------------------------------------------------*/\r
 230 \r
 231 \r