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

   1 /*\r
   2     FreeRTOS V7.5.0 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   5 \r
   6     ***************************************************************************\r
   7      *                                                                       *\r
   8      *    FreeRTOS provides completely free yet professionally developed,    *\r
   9      *    robust, strictly quality controlled, supported, and cross          *\r
  10      *    platform software that has become a de facto standard.             *\r
  11      *                                                                       *\r
  12      *    Help yourself get started quickly and support the FreeRTOS         *\r
  13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  15      *                                                                       *\r
  16      *    Thank you!                                                         *\r
  17      *                                                                       *\r
  18     ***************************************************************************\r
  19 \r
  20     This file is part of the FreeRTOS distribution.\r
  21 \r
  22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  23     the terms of the GNU General Public License (version 2) as published by the\r
  24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  25 \r
  26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  28     >>! the source code for proprietary components outside of the FreeRTOS\r
  29     >>! kernel.\r
  30 \r
  31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  34     link: http://www.freertos.org/a00114.html\r
  35 \r
  36     1 tab == 4 spaces!\r
  37 \r
  38     ***************************************************************************\r
  39      *                                                                       *\r
  40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  41      *    not run, what could be wrong?"                                     *\r
  42      *                                                                       *\r
  43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  44      *                                                                       *\r
  45     ***************************************************************************\r
  46 \r
  47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  48     license and Real Time Engineers Ltd. contact details.\r
  49 \r
  50     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  51     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  52     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  53 \r
  54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  55     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  56     licenses offer ticketed support, indemnification and middleware.\r
  57 \r
  58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  59     engineered and independently SIL3 certified version for use in safety and\r
  60     mission critical applications that require provable dependability.\r
  61 \r
  62     1 tab == 4 spaces!\r
  63 */\r
  64 \r
  65 /* \r
  66 Changes from V2.0.0\r
  67 \r
  68         + Use scheduler suspends in place of critical sections.\r
  69 */\r
  70 \r
  71 #include "FreeRTOS.h"\r
  72 #include "task.h"\r
  73 #include "partest.h"\r
  74 \r
  75 /*-----------------------------------------------------------\r
  76  * Simple parallel port IO routines for the FED 40pin demo board.\r
  77  * The four LED's are connected to D4 to D7.\r
  78  *-----------------------------------------------------------*/\r
  79 \r
  80 #define partstBIT_AS_OUTPUT                     ( ( unsigned short ) 0 )\r
  81 #define partstSET_OUTPUT                        ( ( unsigned short ) 1 )\r
  82 #define partstCLEAR_OUTPUT                      ( ( unsigned short ) 0 )\r
  83 \r
  84 #define partstENABLE_GENERAL_IO         ( ( unsigned char ) 7 )\r
  85 \r
  86 /*-----------------------------------------------------------*/\r
  87 \r
  88 void vParTestInitialise( void )\r
  89 {\r
  90         /* Set the top four bits of port D to output. */\r
  91         TRISDbits.TRISD7 = partstBIT_AS_OUTPUT;\r
  92         TRISDbits.TRISD6 = partstBIT_AS_OUTPUT;\r
  93         TRISDbits.TRISD5 = partstBIT_AS_OUTPUT;\r
  94         TRISDbits.TRISD4 = partstBIT_AS_OUTPUT;\r
  95 \r
  96         /* Start with all bits off. */\r
  97         PORTDbits.RD7 = partstCLEAR_OUTPUT;\r
  98         PORTDbits.RD6 = partstCLEAR_OUTPUT;\r
  99         PORTDbits.RD5 = partstCLEAR_OUTPUT;\r
 100         PORTDbits.RD4 = partstCLEAR_OUTPUT;\r
 101 \r
 102         /* Enable the driver. */\r
 103         ADCON1 = partstENABLE_GENERAL_IO;\r
 104         TRISEbits.TRISE2 = partstBIT_AS_OUTPUT;\r
 105         PORTEbits.RE2 = partstSET_OUTPUT;       \r
 106 }\r
 107 /*-----------------------------------------------------------*/\r
 108 \r
 109 void vParTestSetLED( unsigned portBASE_TYPE uxLED, portBASE_TYPE xValue )\r
 110 {\r
 111         /* We are only using the top nibble, so LED 0 corresponds to bit 4. */  \r
 112         vTaskSuspendAll();\r
 113         {\r
 114                 switch( uxLED )\r
 115                 {\r
 116                         case 3  :       PORTDbits.RD7 = ( short ) xValue;\r
 117                                                 break;\r
 118                         case 2  :       PORTDbits.RD6 = ( short ) xValue;\r
 119                                                 break;\r
 120                         case 1  :       PORTDbits.RD5 = ( short ) xValue;\r
 121                                                 break;\r
 122                         case 0  :       PORTDbits.RD4 = ( short ) xValue;\r
 123                                                 break;\r
 124                         default :       /* There are only 4 LED's. */\r
 125                                                 break;\r
 126                 }\r
 127         }\r
 128         xTaskResumeAll();\r
 129 }\r
 130 /*-----------------------------------------------------------*/\r
 131 \r
 132 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 133 {\r
 134         /* We are only using the top nibble, so LED 0 corresponds to bit 4. */  \r
 135         vTaskSuspendAll();\r
 136         {\r
 137                 switch( uxLED )\r
 138                 {\r
 139                         case 3  :       PORTDbits.RD7 = !( PORTDbits.RD7 );\r
 140                                                 break;\r
 141                         case 2  :       PORTDbits.RD6 = !( PORTDbits.RD6 );\r
 142                                                 break;\r
 143                         case 1  :       PORTDbits.RD5 = !( PORTDbits.RD5 );\r
 144                                                 break;\r
 145                         case 0  :       PORTDbits.RD4 = !( PORTDbits.RD4 );\r
 146                                                 break;\r
 147                         default :       /* There are only 4 LED's. */\r
 148                                                 break;\r
 149                 }\r
 150         }\r
 151         xTaskResumeAll();\r
 152 }\r
 153 \r
 154 \r
 155 \r