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

   1 /*\r
   2     FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.\r
   3 \r
   4     ***************************************************************************\r
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  14     *                                                                         *\r
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  17     *                                                                         *\r
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  22     *                                                                         *\r
  23     ***************************************************************************\r
  24 \r
  25     This file is part of the FreeRTOS distribution.\r
  26 \r
  27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  28     the terms of the GNU General Public License (version 2) as published by the\r
  29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  30     ***NOTE*** The exception to the GPL is included to allow you to distribute\r
  31     a combined work that includes FreeRTOS without being obliged to provide the\r
  32     source code for proprietary components outside of the FreeRTOS kernel.\r
  33     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT\r
  34     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  35     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  36     more details. You should have received a copy of the GNU General Public \r
  37     License and the FreeRTOS license exception along with FreeRTOS; if not it \r
  38     can be viewed here: http://www.freertos.org/a00114.html and also obtained \r
  39     by writing to Richard Barry, contact details for whom are available on the\r
  40     FreeRTOS WEB site.\r
  41 \r
  42     1 tab == 4 spaces!\r
  43 \r
  44     http://www.FreeRTOS.org - Documentation, latest information, license and\r
  45     contact details.\r
  46 \r
  47     http://www.SafeRTOS.com - A version that is certified for use in safety\r
  48     critical systems.\r
  49 \r
  50     http://www.OpenRTOS.com - Commercial support, development, porting,\r
  51     licensing and training services.\r
  52 */\r
  53 \r
  54 /*-----------------------------------------------------------\r
  55  * Characters on the LCD are used to simulate LED's.  In this case the 'ParTest'\r
  56  * is really operating on the LCD display.\r
  57  *-----------------------------------------------------------*/\r
  58 \r
  59 /*\r
  60  * This demo is configured to execute on the ES449 prototyping board from\r
  61  * SoftBaugh. The ES449 has a built in LCD display and a single built in user\r
  62  * LED.  Therefore, in place of flashing an LED, the 'flash' and 'check' tasks\r
  63  * toggle '*' characters on the LCD.  The left most '*' represents LED 0, the\r
  64  * next LED 1, etc.\r
  65  *\r
  66  * There is a single genuine on board LED referenced as LED 10.\r
  67  */\r
  68 \r
  69 /* Standard includes. */\r
  70 #include <signal.h>\r
  71 \r
  72 /* Scheduler includes. */\r
  73 #include "FreeRTOS.h"\r
  74 #include "task.h"\r
  75 \r
  76 /* Demo application includes. */\r
  77 #include "partest.h"\r
  78 \r
  79 /* Constants required to setup the LCD. */\r
  80 #define LCD_DIV_64 5\r
  81 \r
  82 /* Constants required to access the "LED's".  The LED segments are turned on\r
  83 and off to generate '*' characters. */\r
  84 #define partstNUM_LEDS                  ( ( unsigned char ) 6 )\r
  85 #define partstSEGMENTS_ON               ( ( unsigned char ) 0x0f )\r
  86 #define partstSEGMENTS_OFF              ( ( unsigned char ) 0x00 )\r
  87 \r
  88 /* The LED number of the real on board LED, rather than a simulated LED. */\r
  89 #define partstON_BOARD_LED              ( ( unsigned portBASE_TYPE ) 10 )\r
  90 #define mainON_BOARD_LED_BIT    ( ( unsigned char ) 0x01 )\r
  91 \r
  92 /* The LCD segments used to generate the '*' characters for LED's 0 to 5. */\r
  93 unsigned char * const ucRHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa4, \r
  94                                                                                                                                 ( unsigned char * )0xa2, \r
  95                                                                                                                                 ( unsigned char * )0xa0, \r
  96                                                                                                                                 ( unsigned char * )0x9e,\r
  97                                                                                                                                 ( unsigned char * )0x9c,\r
  98                                                                                                                                 ( unsigned char * )0x9a };\r
  99 \r
 100 unsigned char * const ucLHSSegments[ partstNUM_LEDS ] = {       ( unsigned char * )0xa3, \r
 101                                                                                                                                 ( unsigned char * )0xa1, \r
 102                                                                                                                                 ( unsigned char * )0x9f, \r
 103                                                                                                                                 ( unsigned char * )0x9d,\r
 104                                                                                                                                 ( unsigned char * )0x9b,\r
 105                                                                                                                                 ( unsigned char * )0x99 };\r
 106 \r
 107 /*\r
 108  * Toggle the single genuine built in LED.\r
 109  */\r
 110 static void prvToggleOnBoardLED( void );\r
 111 \r
 112 /*-----------------------------------------------------------*/\r
 113 \r
 114 void vParTestInitialise( void )\r
 115 {\r
 116         /* Initialise the LCD hardware. */\r
 117 \r
 118         /* Used for the onboard LED. */\r
 119         P1DIR = 0x01;\r
 120 \r
 121         // Setup Basic Timer for LCD operation\r
 122         BTCTL = (LCD_DIV_64+0x23);\r
 123 \r
 124         // Setup port functions\r
 125         P1SEL = 0x32;\r
 126         P2SEL = 0x00;\r
 127         P3SEL = 0x00;\r
 128         P4SEL = 0xFC;\r
 129         P5SEL = 0xFF;\r
 130         \r
 131         /* Initialise all segments to off. */\r
 132         LCDM1 = partstSEGMENTS_OFF;     \r
 133         LCDM2 = partstSEGMENTS_OFF;     \r
 134         LCDM3 = partstSEGMENTS_OFF;     \r
 135         LCDM4 = partstSEGMENTS_OFF;     \r
 136         LCDM5 = partstSEGMENTS_OFF;     \r
 137         LCDM6 = partstSEGMENTS_OFF;     \r
 138         LCDM7 = partstSEGMENTS_OFF;     \r
 139         LCDM8 = partstSEGMENTS_OFF;     \r
 140         LCDM9 = partstSEGMENTS_OFF;     \r
 141         LCDM10 = partstSEGMENTS_OFF;    \r
 142         LCDM11 = partstSEGMENTS_OFF;    \r
 143         LCDM12 = partstSEGMENTS_OFF;    \r
 144         LCDM13 = partstSEGMENTS_OFF;    \r
 145         LCDM14 = partstSEGMENTS_OFF;    \r
 146         LCDM15 = partstSEGMENTS_OFF;    \r
 147         LCDM16 = partstSEGMENTS_OFF;    \r
 148         LCDM17 = partstSEGMENTS_OFF;    \r
 149         LCDM18 = partstSEGMENTS_OFF;    \r
 150         LCDM19 = partstSEGMENTS_OFF;    \r
 151         LCDM20 = partstSEGMENTS_OFF;    \r
 152 \r
 153         /* Setup LCD control. */\r
 154         LCDCTL = (LCDSG0_7|LCD4MUX|LCDON);\r
 155 }\r
 156 /*-----------------------------------------------------------*/\r
 157 \r
 158 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 159 {\r
 160         /* Set or clear the output [in this case show or hide the '*' character. */\r
 161         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 162         {\r
 163                 vTaskSuspendAll();\r
 164                 {\r
 165                         if( xValue )\r
 166                         {\r
 167                                 /* Turn on the segments required to show the '*'. */\r
 168                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 169                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 170                         }\r
 171                         else\r
 172                         {\r
 173                                 /* Turn off all the segments. */\r
 174                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 175                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 176                         }\r
 177                 }\r
 178                 xTaskResumeAll();\r
 179         }\r
 180 }\r
 181 /*-----------------------------------------------------------*/\r
 182 \r
 183 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 184 {\r
 185         if( uxLED < ( portBASE_TYPE ) partstNUM_LEDS )\r
 186         {\r
 187                 vTaskSuspendAll();\r
 188                 {\r
 189                         /* If the '*' is already showing - hide it.  If it is not already\r
 190                         showing then show it. */\r
 191                         if( *( ucRHSSegments[ uxLED ] ) )\r
 192                         {\r
 193                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 194                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_OFF;\r
 195                         }\r
 196                         else\r
 197                         {\r
 198                                 *( ucRHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 199                                 *( ucLHSSegments[ uxLED ] ) = partstSEGMENTS_ON;\r
 200                         }\r
 201                 }\r
 202                 xTaskResumeAll();\r
 203         }\r
 204         else\r
 205         {\r
 206                 if( uxLED == partstON_BOARD_LED )\r
 207                 {\r
 208                         /* The request related to the genuine on board LED. */\r
 209                         prvToggleOnBoardLED();\r
 210                 }\r
 211         }       \r
 212 }\r
 213 /*-----------------------------------------------------------*/\r
 214 \r
 215 static void prvToggleOnBoardLED( void )\r
 216 {\r
 217 static unsigned short sState = pdFALSE;\r
 218 \r
 219         /* Toggle the state of the single genuine on board LED. */\r
 220         if( sState )    \r
 221         {\r
 222                 P1OUT |= mainON_BOARD_LED_BIT;\r
 223         }\r
 224         else\r
 225         {\r
 226                 P1OUT &= ~mainON_BOARD_LED_BIT;\r
 227         }\r
 228 \r
 229         sState = !sState;\r
 230 }\r
 231 /*-----------------------------------------------------------*/\r
 232 \r
 233 \r