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

   1 /*\r
   2         FreeRTOS V5.4.2 - 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         * Looking for a quick start?  Then check out the FreeRTOS eBook!          *\r
  29         * See http://www.FreeRTOS.org/Documentation for details                   *\r
  30         *                                                                         *\r
  31         ***************************************************************************\r
  32 \r
  33         1 tab == 4 spaces!\r
  34 \r
  35         Please ensure to read the configuration and relevant port sections of the\r
  36         online documentation.\r
  37 \r
  38         http://www.FreeRTOS.org - Documentation, latest information, license and\r
  39         contact details.\r
  40 \r
  41         http://www.SafeRTOS.com - A version that is certified for use in safety\r
  42         critical systems.\r
  43 \r
  44         http://www.OpenRTOS.com - Commercial support, development, porting,\r
  45         licensing and training services.\r
  46 */\r
  47 \r
  48 /*-----------------------------------------------------------\r
  49  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  50  * is really operating on the LCD display.\r
  51  *-----------------------------------------------------------*/\r
  52 \r
  53 /*\r
  54  * This demo is configured to execute on the ES449 prototyping board from\r
  55  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  56  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  57  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  58  * next LED 1, etc.\r
  59  *\r
  60  * There is a single genuine on board LED referenced as LED 10.\r
  61  */\r
  62 \r
  63 /* Standard includes. */\r
  64 #include <signal.h>\r
  65 \r
  66 /* Scheduler includes. */\r
  67 #include "FreeRTOS.h"\r
  68 #include "task.h"\r
  69 \r
  70 /* Demo application includes. */\r
  71 #include "partest.h"\r
  72 \r
  73 /* Constants required to setup the LCD. */\r
  74 #define LCD_DIV_64 5\r
  75 \r
  76 /* Constants required to access the "LED's".  The LED segments are turned on\r
  77 and off to generate '*' characters. */\r
  78 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  79 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  80 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  81 \r
  82 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  83 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  84 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  85 \r
  86 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  87 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  88                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  89                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  90                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  91                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  92                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  93 \r
  94 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  95                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  96                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  97                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  98                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  99                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
 100 \r
 101 /*\r
 102  * Toggle the single genuine built in LED.\r
 103  */\r
 104 static void prvToggleOnBoardLED( void );\r
 105 \r
 106 /*-----------------------------------------------------------*/\r
 107 \r
 108 void vParTestInitialise( void )\r
 109 {\r
 110         /* Initialise the LCD hardware. */\r
 111 \r
 112         /* Used for the onboard LED. */\r
 113         P1DIR = 0x01;\r
 114 \r
 115         // Setup Basic Timer for LCD operation\r
 116         BTCTL = (LCD_DIV_64+0x23);\r
 117 \r
 118         // Setup port functions\r
 119         P1SEL = 0x32;\r
 120         P2SEL = 0x00;\r
 121         P3SEL = 0x00;\r
 122         P4SEL = 0xFC;\r
 123         P5SEL = 0xFF;\r
 124         \r
 125         /* Initialise all segments to off. */\r
 126         LCDM1 = partstSEGMENTS_OFF;     \r
 127         LCDM2 = partstSEGMENTS_OFF;     \r
 128         LCDM3 = partstSEGMENTS_OFF;     \r
 129         LCDM4 = partstSEGMENTS_OFF;     \r
 130         LCDM5 = partstSEGMENTS_OFF;     \r
 131         LCDM6 = partstSEGMENTS_OFF;     \r
 132         LCDM7 = partstSEGMENTS_OFF;     \r
 133         LCDM8 = partstSEGMENTS_OFF;     \r
 134         LCDM9 = partstSEGMENTS_OFF;     \r
 135         LCDM10 = partstSEGMENTS_OFF;    \r
 136         LCDM11 = partstSEGMENTS_OFF;    \r
 137         LCDM12 = partstSEGMENTS_OFF;    \r
 138         LCDM13 = partstSEGMENTS_OFF;    \r
 139         LCDM14 = partstSEGMENTS_OFF;    \r
 140         LCDM15 = partstSEGMENTS_OFF;    \r
 141         LCDM16 = partstSEGMENTS_OFF;    \r
 142         LCDM17 = partstSEGMENTS_OFF;    \r
 143         LCDM18 = partstSEGMENTS_OFF;    \r
 144         LCDM19 = partstSEGMENTS_OFF;    \r
 145         LCDM20 = partstSEGMENTS_OFF;    \r
 146 \r
 147         /* Setup LCD control. */\r
 148         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 149 }\r
 150 /*-----------------------------------------------------------*/\r
 151 \r
 152 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 153 {\r
 154         /* Set or clear the output [in this case show or hide the '*' character. */\r
 155         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 156         {\r
 157                 vTaskSuspendAll();\r
 158                 {\r
 159                         if( xValue )\r
 160                         {\r
 161                                 /* Turn on the segments required to show the '*'. */\r
 162                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 163                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 164                         }\r
 165                         else\r
 166                         {\r
 167                                 /* Turn off all the segments. */\r
 168                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 169                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 170                         }\r
 171                 }\r
 172                 xTaskResumeAll();\r
 173         }\r
 174 }\r
 175 /*-----------------------------------------------------------*/\r
 176 \r
 177 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 178 {\r
 179         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 180         {\r
 181                 vTaskSuspendAll();\r
 182                 {\r
 183                         /* If the '*' is already showing - hide it.  If it is not already\r
 184                         showing then show it. */\r
 185                         if( *( ucRHSSegments[ uxLED ] ) )\r
 186                         {\r
 187                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 188                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 189                         }\r
 190                         else\r
 191                         {\r
 192                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 193                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 194                         }\r
 195                 }\r
 196                 xTaskResumeAll();\r
 197         }\r
 198         else\r
 199         {\r
 200                 if( uxLED == partstON_BOARD_LED )\r
 201                 {\r
 202                         /* The request related to the genuine on board LED. */\r
 203                         prvToggleOnBoardLED();\r
 204                 }\r
 205         }       \r
 206 }\r
 207 /*-----------------------------------------------------------*/\r
 208 \r
 209 static void prvToggleOnBoardLED( void )\r
 210 {\r
 211 static unsigned portSHORT sState = pdFALSE;\r
 212 \r
 213         /* Toggle the state of the single genuine on board LED. */\r
 214         if( sState )    \r
 215         {\r
 216                 P1OUT |= mainON_BOARD_LED_BIT;\r
 217         }\r
 218         else\r
 219         {\r
 220                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 221         }\r
 222 \r
 223         sState = !sState;\r
 224 }\r
 225 /*-----------------------------------------------------------*/\r
 226 \r
 227 \r