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

   1 /*\r
   2         FreeRTOS.org V5.3.1 - 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         **NOTE** The exception to the GPL is included to allow you to distribute a\r
  10         combined work that includes FreeRTOS.org without being obliged to provide\r
  11         the source code for any proprietary components.  Alternative commercial\r
  12         license and support terms are also available upon request.  See the \r
  13         licensing section of http://www.FreeRTOS.org for full details.\r
  14 \r
  15         FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT\r
  16         ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  17         FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  18         more details.\r
  19 \r
  20         You should have received a copy of the GNU General Public License along\r
  21         with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59\r
  22         Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
  23 \r
  24 \r
  25         ***************************************************************************\r
  26         *                                                                         *\r
  27         * Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *\r
  28         *                                                                         *\r
  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
  31         * explains numerous examples that are written using the FreeRTOS API.     *\r
  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
  47 \r
  48         http://www.OpenRTOS.com - Commercial support, development, porting,\r
  49         licensing and training services.\r
  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