git.sur5r.net Git - freertos/blob - Demo/msp430_IAR/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 \r
  65 /* Scheduler includes. */\r
  66 #include "FreeRTOS.h"\r
  67 #include "task.h"\r
  68 \r
  69 /* Demo application includes. */\r
  70 #include "partest.h"\r
  71 \r
  72 /* Constants required to setup the LCD. */\r
  73 #define LCD_DIV_64 5\r
  74 \r
  75 /* Constants required to access the "LED's".  The LED segments are turned on\r
  76 and off to generate '*' characters. */\r
  77 #define partstNUM_LEDS                  ( ( unsigned portCHAR ) 6 )\r
  78 #define partstSEGMENTS_ON               ( ( unsigned portCHAR ) 0x0f )\r
  79 #define partstSEGMENTS_OFF              ( ( unsigned portCHAR ) 0x00 )\r
  80 \r
  81 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  82 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  83 #define mainON_BOARD_LED_BIT    ( ( unsigned portCHAR ) 0x01 )\r
  84 \r
  85 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  86 unsigned portCHAR * const ucRHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa4, \r
  87                                                                                                                                 ( unsigned portCHAR * )0xa2, \r
  88                                                                                                                                 ( unsigned portCHAR * )0xa0, \r
  89                                                                                                                                 ( unsigned portCHAR * )0x9e,\r
  90                                                                                                                                 ( unsigned portCHAR * )0x9c,\r
  91                                                                                                                                 ( unsigned portCHAR * )0x9a };\r
  92 \r
  93 unsigned portCHAR * const ucLHSSegments[ partstNUM_LEDS ] = {   ( unsigned portCHAR * )0xa3, \r
  94                                                                                                                                 ( unsigned portCHAR * )0xa1, \r
  95                                                                                                                                 ( unsigned portCHAR * )0x9f, \r
  96                                                                                                                                 ( unsigned portCHAR * )0x9d,\r
  97                                                                                                                                 ( unsigned portCHAR * )0x9b,\r
  98                                                                                                                                 ( unsigned portCHAR * )0x99 };\r
  99 \r
 100 /*\r
 101  * Toggle the single genuine built in LED.\r
 102  */\r
 103 static void prvToggleOnBoardLED( void );\r
 104 \r
 105 /*-----------------------------------------------------------*/\r
 106 \r
 107 void vParTestInitialise( void )\r
 108 {\r
 109         /* Initialise the LCD hardware. */\r
 110 \r
 111         /* Used for the onboard LED. */\r
 112         P1DIR = 0x01;\r
 113 \r
 114         // Setup Basic Timer for LCD operation\r
 115         BTCTL = (LCD_DIV_64+0x23);\r
 116 \r
 117         // Setup port functions\r
 118         P1SEL = 0x32;\r
 119         P2SEL = 0x00;\r
 120         P3SEL = 0x00;\r
 121         P4SEL = 0xFC;\r
 122         P5SEL = 0xFF;\r
 123         \r
 124         /* Initialise all segments to off. */\r
 125         LCDM1 = partstSEGMENTS_OFF;     \r
 126         LCDM2 = partstSEGMENTS_OFF;     \r
 127         LCDM3 = partstSEGMENTS_OFF;     \r
 128         LCDM4 = partstSEGMENTS_OFF;     \r
 129         LCDM5 = partstSEGMENTS_OFF;     \r
 130         LCDM6 = partstSEGMENTS_OFF;     \r
 131         LCDM7 = partstSEGMENTS_OFF;     \r
 132         LCDM8 = partstSEGMENTS_OFF;     \r
 133         LCDM9 = partstSEGMENTS_OFF;     \r
 134         LCDM10 = partstSEGMENTS_OFF;    \r
 135         LCDM11 = partstSEGMENTS_OFF;    \r
 136         LCDM12 = partstSEGMENTS_OFF;    \r
 137         LCDM13 = partstSEGMENTS_OFF;    \r
 138         LCDM14 = partstSEGMENTS_OFF;    \r
 139         LCDM15 = partstSEGMENTS_OFF;    \r
 140         LCDM16 = partstSEGMENTS_OFF;    \r
 141         LCDM17 = partstSEGMENTS_OFF;    \r
 142         LCDM18 = partstSEGMENTS_OFF;    \r
 143         LCDM19 = partstSEGMENTS_OFF;    \r
 144         LCDM20 = partstSEGMENTS_OFF;    \r
 145 \r
 146         /* Setup LCD control. */\r
 147         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 148 }\r
 149 /*-----------------------------------------------------------*/\r
 150 \r
 151 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 152 {\r
 153         /* Set or clear the output [in this case show or hide the '*' character. */\r
 154         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 155         {\r
 156                 vTaskSuspendAll();\r
 157                 {\r
 158                         if( xValue )\r
 159                         {\r
 160                                 /* Turn on the segments required to show the '*'. */\r
 161                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 162                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 163                         }\r
 164                         else\r
 165                         {\r
 166                                 /* Turn off all the segments. */\r
 167                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 168                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 169                         }\r
 170                 }\r
 171                 xTaskResumeAll();\r
 172         }\r
 173 }\r
 174 /*-----------------------------------------------------------*/\r
 175 \r
 176 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 177 {\r
 178         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 179         {\r
 180                 vTaskSuspendAll();\r
 181                 {\r
 182                         /* If the '*' is already showing - hide it.  If it is not already\r
 183                         showing then show it. */\r
 184                         if( *( ucRHSSegments[ uxLED ] ) )\r
 185                         {\r
 186                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 187                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 188                         }\r
 189                         else\r
 190                         {\r
 191                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 192                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 193                         }\r
 194                 }\r
 195                 xTaskResumeAll();\r
 196         }\r
 197         else\r
 198         {\r
 199                 if( uxLED == partstON_BOARD_LED )\r
 200                 {\r
 201                         /* The request related to the genuine on board LED. */\r
 202                         prvToggleOnBoardLED();\r
 203                 }\r
 204         }       \r
 205 }\r
 206 /*-----------------------------------------------------------*/\r
 207 \r
 208 static void prvToggleOnBoardLED( void )\r
 209 {\r
 210 static unsigned portSHORT sState = pdFALSE;\r
 211 \r
 212         /* Toggle the state of the single genuine on board LED. */\r
 213         if( sState )    \r
 214         {\r
 215                 P1OUT |= mainON_BOARD_LED_BIT;\r
 216         }\r
 217         else\r
 218         {\r
 219                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 220         }\r
 221 \r
 222         sState = !sState;\r
 223 }\r
 224 /*-----------------------------------------------------------*/\r
 225 \r
 226 \r