git.sur5r.net Git - freertos/blob - Demo/msp430_CrossWorks/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 \r
  64 /* Scheduler includes. */\r
  65 #include "FreeRTOS.h"\r
  66 #include "task.h"\r
  67 \r
  68 /* Demo application includes. */\r
  69 #include "partest.h"\r
  70 \r
  71 /* Constants required to setup the LCD. */\r
  72 #define LCD_DIV_64 5\r
  73 \r
  74 /* Constants required to access the "LED's".  The LED segments are turned on\r
  75 and off to generate '*' characters. */\r
  76 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  77 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  78 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  79 \r
  80 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  81 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  82 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  83 \r
  84 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  85 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  86                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  87                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  88                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  89                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  90                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  91 \r
  92 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  93                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  94                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  95                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  96                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  97                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  98 \r
  99 /*\r
 100  * Toggle the single genuine built in LED.\r
 101  */\r
 102 static void prvToggleOnBoardLED( void );\r
 103 \r
 104 /*-----------------------------------------------------------*/\r
 105 \r
 106 void vParTestInitialise( void )\r
 107 {\r
 108         /* Initialise the LCD hardware. */\r
 109 \r
 110         /* Used for the onboard LED. */\r
 111         P1DIR = 0x01;\r
 112 \r
 113         // Setup Basic Timer for LCD operation\r
 114         BTCTL = (LCD_DIV_64+0x23);\r
 115 \r
 116         // Setup port functions\r
 117         P1SEL = 0x32;\r
 118         P2SEL = 0x00;\r
 119         P3SEL = 0x00;\r
 120         P4SEL = 0xFC;\r
 121         P5SEL = 0xFF;\r
 122         \r
 123         /* Initialise all segments to off. */\r
 124         LCDM1 = partstSEGMENTS_OFF;     \r
 125         LCDM2 = partstSEGMENTS_OFF;     \r
 126         LCDM3 = partstSEGMENTS_OFF;     \r
 127         LCDM4 = partstSEGMENTS_OFF;     \r
 128         LCDM5 = partstSEGMENTS_OFF;     \r
 129         LCDM6 = partstSEGMENTS_OFF;     \r
 130         LCDM7 = partstSEGMENTS_OFF;     \r
 131         LCDM8 = partstSEGMENTS_OFF;     \r
 132         LCDM9 = partstSEGMENTS_OFF;     \r
 133         LCDM10 = partstSEGMENTS_OFF;    \r
 134         LCDM11 = partstSEGMENTS_OFF;    \r
 135         LCDM12 = partstSEGMENTS_OFF;    \r
 136         LCDM13 = partstSEGMENTS_OFF;    \r
 137         LCDM14 = partstSEGMENTS_OFF;    \r
 138         LCDM15 = partstSEGMENTS_OFF;    \r
 139         LCDM16 = partstSEGMENTS_OFF;    \r
 140         LCDM17 = partstSEGMENTS_OFF;    \r
 141         LCDM18 = partstSEGMENTS_OFF;    \r
 142         LCDM19 = partstSEGMENTS_OFF;    \r
 143         LCDM20 = partstSEGMENTS_OFF;    \r
 144 \r
 145         /* Setup LCD control. */\r
 146         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 147 }\r
 148 /*-----------------------------------------------------------*/\r
 149 \r
 150 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 151 {\r
 152         /* Set or clear the output [in this case show or hide the '*' character. */\r
 153         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 154         {\r
 155                 vTaskSuspendAll();\r
 156                 {\r
 157                         if( xValue )\r
 158                         {\r
 159                                 /* Turn on the segments required to show the '*'. */\r
 160                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 161                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 162                         }\r
 163                         else\r
 164                         {\r
 165                                 /* Turn off all the segments. */\r
 166                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 167                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 168                         }\r
 169                 }\r
 170                 xTaskResumeAll();\r
 171         }\r
 172 }\r
 173 /*-----------------------------------------------------------*/\r
 174 \r
 175 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 176 {\r
 177         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 178         {\r
 179                 vTaskSuspendAll();\r
 180                 {\r
 181                         /* If the '*' is already showing - hide it.  If it is not already\r
 182                         showing then show it. */\r
 183                         if( *( ucRHSSegments[ uxLED ] ) )\r
 184                         {\r
 185                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 186                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 187                         }\r
 188                         else\r
 189                         {\r
 190                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 191                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 192                         }\r
 193                 }\r
 194                 xTaskResumeAll();\r
 195         }\r
 196         else\r
 197         {\r
 198                 if( uxLED == partstON_BOARD_LED )\r
 199                 {\r
 200                         /* The request related to the genuine on board LED. */\r
 201                         prvToggleOnBoardLED();\r
 202                 }\r
 203         }       \r
 204 }\r
 205 /*-----------------------------------------------------------*/\r
 206 \r
 207 static void prvToggleOnBoardLED( void )\r
 208 {\r
 209 static unsigned portSHORT sState = pdFALSE;\r
 210 \r
 211         /* Toggle the state of the single genuine on board LED. */\r
 212         if( sState )    \r
 213         {\r
 214                 P1OUT |= mainON_BOARD_LED_BIT;\r
 215         }\r
 216         else\r
 217         {\r
 218                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 219         }\r
 220 \r
 221         sState = !sState;\r
 222 }\r
 223 /*-----------------------------------------------------------*/\r
 224 \r
 225 \r