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

   1 /*\r
   2     FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.\r
   3 \r
   4     This file is part of the FreeRTOS distribution.\r
   5 \r
   6     FreeRTOS is free software; you can redistribute it and/or modify it    under\r
   7     the terms of the GNU General Public License (version 2) as published by the\r
   8     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 without being obliged to provide the\r
  11     source code for proprietary components outside of the FreeRTOS kernel.\r
  12     Alternative commercial license and support terms are also available upon\r
  13     request.  See the licensing section of http://www.FreeRTOS.org for full\r
  14     license details.\r
  15 \r
  16     FreeRTOS is distributed in the hope that it will be useful,    but WITHOUT\r
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  19     more details.\r
  20 \r
  21     You should have received a copy of the GNU General Public License along\r
  22     with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59\r
  23     Temple Place, Suite 330, Boston, MA  02111-1307  USA.\r
  24 \r
  25 \r
  26     ***************************************************************************\r
  27     *                                                                         *\r
  28     * The FreeRTOS eBook and reference manual are available to purchase for a *\r
  29     * small fee. Help yourself get started quickly while also helping the     *\r
  30     * FreeRTOS project! See http://www.FreeRTOS.org/Documentation for details *\r
  31     *                                                                         *\r
  32     ***************************************************************************\r
  33 \r
  34     1 tab == 4 spaces!\r
  35 \r
  36     Please ensure to read the configuration and relevant port sections of the\r
  37     online documentation.\r
  38 \r
  39     http://www.FreeRTOS.org - Documentation, latest information, license and\r
  40     contact details.\r
  41 \r
  42     http://www.SafeRTOS.com - A version that is certified for use in safety\r
  43     critical systems.\r
  44 \r
  45     http://www.OpenRTOS.com - Commercial support, development, porting,\r
  46     licensing and training services.\r
  47 */\r
  48 \r
  49 /*-----------------------------------------------------------\r
  50  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  51  * is really operating on the LCD display.\r
  52  *-----------------------------------------------------------*/\r
  53 \r
  54 /*\r
  55  * This demo is configured to execute on the ES449 prototyping board from\r
  56  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  57  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  58  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  59  * next LED 1, etc.\r
  60  *\r
  61  * There is a single genuine on board LED referenced as LED 10.\r
  62  */\r
  63 \r
  64 /* Standard includes. */\r
  65 #include <signal.h>\r
  66 \r
  67 /* Scheduler includes. */\r
  68 #include "FreeRTOS.h"\r
  69 #include "task.h"\r
  70 \r
  71 /* Demo application includes. */\r
  72 #include "partest.h"\r
  73 \r
  74 /* Constants required to setup the LCD. */\r
  75 #define LCD_DIV_64 5\r
  76 \r
  77 /* Constants required to access the "LED's".  The LED segments are turned on\r
  78 and off to generate '*' characters. */\r
  79 #define partstNUM_LEDS                  ( ( unsigned char ) 6 )\r
  80 #define partstSEGMENTS_ON               ( ( unsigned char ) 0x0f )\r
  81 #define partstSEGMENTS_OFF              ( ( unsigned char ) 0x00 )\r
  82 \r
  83 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  84 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  85 #define mainON_BOARD_LED_BIT    ( ( unsigned char ) 0x01 )\r
  86 \r
  87 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  88 unsigned char * const ucRHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa4, \r
  89                                                                                                                                 ( unsigned char * )0xa2, \r
  90                                                                                                                                 ( unsigned char * )0xa0, \r
  91                                                                                                                                 ( unsigned char * )0x9e,\r
  92                                                                                                                                 ( unsigned char * )0x9c,\r
  93                                                                                                                                 ( unsigned char * )0x9a };\r
  94 \r
  95 unsigned char * const ucLHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa3, \r
  96                                                                                                                                 ( unsigned char * )0xa1, \r
  97                                                                                                                                 ( unsigned char * )0x9f, \r
  98                                                                                                                                 ( unsigned char * )0x9d,\r
  99                                                                                                                                 ( unsigned char * )0x9b,\r
 100                                                                                                                                 ( unsigned char * )0x99 };\r
 101 \r
 102 /*\r
 103  * Toggle the single genuine built in LED.\r
 104  */\r
 105 static void prvToggleOnBoardLED( void );\r
 106 \r
 107 /*-----------------------------------------------------------*/\r
 108 \r
 109 void vParTestInitialise( void )\r
 110 {\r
 111         /* Initialise the LCD hardware. */\r
 112 \r
 113         /* Used for the onboard LED. */\r
 114         P1DIR = 0x01;\r
 115 \r
 116         // Setup Basic Timer for LCD operation\r
 117         BTCTL = (LCD_DIV_64+0x23);\r
 118 \r
 119         // Setup port functions\r
 120         P1SEL = 0x32;\r
 121         P2SEL = 0x00;\r
 122         P3SEL = 0x00;\r
 123         P4SEL = 0xFC;\r
 124         P5SEL = 0xFF;\r
 125         \r
 126         /* Initialise all segments to off. */\r
 127         LCDM1 = partstSEGMENTS_OFF;     \r
 128         LCDM2 = partstSEGMENTS_OFF;     \r
 129         LCDM3 = partstSEGMENTS_OFF;     \r
 130         LCDM4 = partstSEGMENTS_OFF;     \r
 131         LCDM5 = partstSEGMENTS_OFF;     \r
 132         LCDM6 = partstSEGMENTS_OFF;     \r
 133         LCDM7 = partstSEGMENTS_OFF;     \r
 134         LCDM8 = partstSEGMENTS_OFF;     \r
 135         LCDM9 = partstSEGMENTS_OFF;     \r
 136         LCDM10 = partstSEGMENTS_OFF;    \r
 137         LCDM11 = partstSEGMENTS_OFF;    \r
 138         LCDM12 = partstSEGMENTS_OFF;    \r
 139         LCDM13 = partstSEGMENTS_OFF;    \r
 140         LCDM14 = partstSEGMENTS_OFF;    \r
 141         LCDM15 = partstSEGMENTS_OFF;    \r
 142         LCDM16 = partstSEGMENTS_OFF;    \r
 143         LCDM17 = partstSEGMENTS_OFF;    \r
 144         LCDM18 = partstSEGMENTS_OFF;    \r
 145         LCDM19 = partstSEGMENTS_OFF;    \r
 146         LCDM20 = partstSEGMENTS_OFF;    \r
 147 \r
 148         /* Setup LCD control. */\r
 149         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 150 }\r
 151 /*-----------------------------------------------------------*/\r
 152 \r
 153 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 154 {\r
 155         /* Set or clear the output [in this case show or hide the '*' character. */\r
 156         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 157         {\r
 158                 vTaskSuspendAll();\r
 159                 {\r
 160                         if( xValue )\r
 161                         {\r
 162                                 /* Turn on the segments required to show the '*'. */\r
 163                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 164                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 165                         }\r
 166                         else\r
 167                         {\r
 168                                 /* Turn off all the segments. */\r
 169                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 170                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 171                         }\r
 172                 }\r
 173                 xTaskResumeAll();\r
 174         }\r
 175 }\r
 176 /*-----------------------------------------------------------*/\r
 177 \r
 178 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 179 {\r
 180         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 181         {\r
 182                 vTaskSuspendAll();\r
 183                 {\r
 184                         /* If the '*' is already showing - hide it.  If it is not already\r
 185                         showing then show it. */\r
 186                         if( *( ucRHSSegments[ uxLED ] ) )\r
 187                         {\r
 188                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 189                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 190                         }\r
 191                         else\r
 192                         {\r
 193                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 194                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 195                         }\r
 196                 }\r
 197                 xTaskResumeAll();\r
 198         }\r
 199         else\r
 200         {\r
 201                 if( uxLED == partstON_BOARD_LED )\r
 202                 {\r
 203                         /* The request related to the genuine on board LED. */\r
 204                         prvToggleOnBoardLED();\r
 205                 }\r
 206         }       \r
 207 }\r
 208 /*-----------------------------------------------------------*/\r
 209 \r
 210 static void prvToggleOnBoardLED( void )\r
 211 {\r
 212 static unsigned short sState = pdFALSE;\r
 213 \r
 214         /* Toggle the state of the single genuine on board LED. */\r
 215         if( sState )    \r
 216         {\r
 217                 P1OUT |= mainON_BOARD_LED_BIT;\r
 218         }\r
 219         else\r
 220         {\r
 221                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 222         }\r
 223 \r
 224         sState = !sState;\r
 225 }\r
 226 /*-----------------------------------------------------------*/\r
 227 \r
 228 \r