git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/PIC18_MPLAB/ParTest/ParTest.c

   1 /*\r
   2     FreeRTOS V7.5.3 - Copyright (C) 2013 Real Time Engineers Ltd. \r
   3     All rights reserved\r
   4 \r
   5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
   9      *    FreeRTOS provides completely free yet professionally developed,    *\r
  10      *    robust, strictly quality controlled, supported, and cross          *\r
  11      *    platform software that has become a de facto standard.             *\r
  12      *                                                                       *\r
  13      *    Help yourself get started quickly and support the FreeRTOS         *\r
  14      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  15      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  16      *                                                                       *\r
  17      *    Thank you!                                                         *\r
  18      *                                                                       *\r
  19     ***************************************************************************\r
  20 \r
  21     This file is part of the FreeRTOS distribution.\r
  22 \r
  23     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  24     the terms of the GNU General Public License (version 2) as published by the\r
  25     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  26 \r
  27     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  28     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  29     >>! the source code for proprietary components outside of the FreeRTOS\r
  30     >>! kernel.\r
  31 \r
  32     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  33     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  34     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  35     link: http://www.freertos.org/a00114.html\r
  36 \r
  37     1 tab == 4 spaces!\r
  38 \r
  39     ***************************************************************************\r
  40      *                                                                       *\r
  41      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  42      *    not run, what could be wrong?"                                     *\r
  43      *                                                                       *\r
  44      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  45      *                                                                       *\r
  46     ***************************************************************************\r
  47 \r
  48     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  49     license and Real Time Engineers Ltd. contact details.\r
  50 \r
  51     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  52     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  53     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  54 \r
  55     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  56     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  57     licenses offer ticketed support, indemnification and middleware.\r
  58 \r
  59     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  60     engineered and independently SIL3 certified version for use in safety and\r
  61     mission critical applications that require provable dependability.\r
  62 \r
  63     1 tab == 4 spaces!\r
  64 */\r
  65 \r
  66 /* \r
  67 Changes from V2.0.0\r
  68 \r
  69         + Use scheduler suspends in place of critical sections.\r
  70 */\r
  71 \r
  72 #include "FreeRTOS.h"\r
  73 #include "task.h"\r
  74 #include "partest.h"\r
  75 \r
  76 /*-----------------------------------------------------------\r
  77  * Simple parallel port IO routines for the FED 40pin demo board.\r
  78  * The four LED's are connected to D4 to D7.\r
  79  *-----------------------------------------------------------*/\r
  80 \r
  81 #define partstBIT_AS_OUTPUT                     ( ( unsigned short ) 0 )\r
  82 #define partstSET_OUTPUT                        ( ( unsigned short ) 1 )\r
  83 #define partstCLEAR_OUTPUT                      ( ( unsigned short ) 0 )\r
  84 \r
  85 #define partstENABLE_GENERAL_IO         ( ( unsigned char ) 7 )\r
  86 \r
  87 /*-----------------------------------------------------------*/\r
  88 \r
  89 void vParTestInitialise( void )\r
  90 {\r
  91         /* Set the top four bits of port D to output. */\r
  92         TRISDbits.TRISD7 = partstBIT_AS_OUTPUT;\r
  93         TRISDbits.TRISD6 = partstBIT_AS_OUTPUT;\r
  94         TRISDbits.TRISD5 = partstBIT_AS_OUTPUT;\r
  95         TRISDbits.TRISD4 = partstBIT_AS_OUTPUT;\r
  96 \r
  97         /* Start with all bits off. */\r
  98         PORTDbits.RD7 = partstCLEAR_OUTPUT;\r
  99         PORTDbits.RD6 = partstCLEAR_OUTPUT;\r
 100         PORTDbits.RD5 = partstCLEAR_OUTPUT;\r
 101         PORTDbits.RD4 = partstCLEAR_OUTPUT;\r
 102 \r
 103         /* Enable the driver. */\r
 104         ADCON1 = partstENABLE_GENERAL_IO;\r
 105         TRISEbits.TRISE2 = partstBIT_AS_OUTPUT;\r
 106         PORTEbits.RE2 = partstSET_OUTPUT;       \r
 107 }\r
 108 /*-----------------------------------------------------------*/\r
 109 \r
 110 void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )\r
 111 {\r
 112         /* We are only using the top nibble, so LED 0 corresponds to bit 4. */  \r
 113         vTaskSuspendAll();\r
 114         {\r
 115                 switch( uxLED )\r
 116                 {\r
 117                         case 3  :       PORTDbits.RD7 = ( short ) xValue;\r
 118                                                 break;\r
 119                         case 2  :       PORTDbits.RD6 = ( short ) xValue;\r
 120                                                 break;\r
 121                         case 1  :       PORTDbits.RD5 = ( short ) xValue;\r
 122                                                 break;\r
 123                         case 0  :       PORTDbits.RD4 = ( short ) xValue;\r
 124                                                 break;\r
 125                         default :       /* There are only 4 LED's. */\r
 126                                                 break;\r
 127                 }\r
 128         }\r
 129         xTaskResumeAll();\r
 130 }\r
 131 /*-----------------------------------------------------------*/\r
 132 \r
 133 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 134 {\r
 135         /* We are only using the top nibble, so LED 0 corresponds to bit 4. */  \r
 136         vTaskSuspendAll();\r
 137         {\r
 138                 switch( uxLED )\r
 139                 {\r
 140                         case 3  :       PORTDbits.RD7 = !( PORTDbits.RD7 );\r
 141                                                 break;\r
 142                         case 2  :       PORTDbits.RD6 = !( PORTDbits.RD6 );\r
 143                                                 break;\r
 144                         case 1  :       PORTDbits.RD5 = !( PORTDbits.RD5 );\r
 145                                                 break;\r
 146                         case 0  :       PORTDbits.RD4 = !( PORTDbits.RD4 );\r
 147                                                 break;\r
 148                         default :       /* There are only 4 LED's. */\r
 149                                                 break;\r
 150                 }\r
 151         }\r
 152         xTaskResumeAll();\r
 153 }\r
 154 \r
 155 \r
 156 \r