git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/MicroBlaze_Spartan-6_EthernetLite/SDKProjects/RTOSDemo/ParTest.c

   1 /*\r
   2     FreeRTOS V8.0.0:rc1 - Copyright (C) 2014 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  * Simple digital IO routines.\r
  68  *-----------------------------------------------------------*/\r
  69 \r
  70 /* Kernel includes. */\r
  71 #include "FreeRTOS.h"\r
  72 \r
  73 /* Demo application includes. */\r
  74 #include "partest.h"\r
  75 \r
  76 /* Library includes. */\r
  77 #include "xgpio.h"\r
  78 \r
  79 /* The hardware design that accompanies this demo project has four LED \r
  80 outputs. */\r
  81 #define partstMAX_LED   4\r
  82 \r
  83 /*-----------------------------------------------------------*/\r
  84 \r
  85 /* A hardware specific constant required to use the Xilinx driver library. */\r
  86 static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;\r
  87 \r
  88 /* The current state of the output port. */\r
  89 static unsigned char ucGPIOState = 0U;\r
  90 \r
  91 /* Structure that hold the state of the ouptut peripheral used by this demo.\r
  92 This is used by the Xilinx peripheral driver API functions. */\r
  93 static XGpio xOutputGPIOInstance;\r
  94 \r
  95 /*\r
  96  * Setup the IO for the LED outputs.\r
  97  */\r
  98 void vParTestInitialise( void )\r
  99 {\r
 100 portBASE_TYPE xStatus;\r
 101 const unsigned char ucSetToOutput = 0U;\r
 102 \r
 103         /* Initialise the GPIO for the LEDs. */\r
 104         xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );\r
 105         if( xStatus == XST_SUCCESS )\r
 106         {\r
 107                 /* All bits on this channel are going to be outputs (LEDs). */\r
 108                 XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );\r
 109 \r
 110                 /* Start with all LEDs off. */\r
 111                 ucGPIOState = 0U;\r
 112                 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 113         }\r
 114         \r
 115         configASSERT( xStatus == XST_SUCCESS );\r
 116 }\r
 117 /*-----------------------------------------------------------*/\r
 118 \r
 119 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 120 {\r
 121 unsigned char ucLED = 1U;\r
 122 \r
 123         /* Only attempt to set the LED if it is in range. */\r
 124         if( uxLED < partstMAX_LED )\r
 125         {\r
 126                 ucLED <<= ( unsigned char ) uxLED;\r
 127 \r
 128                 portENTER_CRITICAL();\r
 129                 {\r
 130                         if( xValue == pdFALSE )\r
 131                         {\r
 132                                 ucGPIOState &= ~ucLED;\r
 133                         }\r
 134                         else\r
 135                         {\r
 136                                 ucGPIOState |= ucLED;\r
 137                         }\r
 138                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 139                 }\r
 140                 portEXIT_CRITICAL();\r
 141         }\r
 142 }\r
 143 /*-----------------------------------------------------------*/\r
 144 \r
 145 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 146 {\r
 147 unsigned char ucLED = 1U;\r
 148 \r
 149         /* Only attempt to toggle the LED if it is in range. */\r
 150         if( uxLED < partstMAX_LED )\r
 151         {\r
 152                 ucLED <<= ( unsigned char ) uxLED;\r
 153 \r
 154                 portENTER_CRITICAL();\r
 155                 {\r
 156                         if( ( ucGPIOState & ucLED ) != 0 )\r
 157                         {\r
 158                                 ucGPIOState &= ~ucLED;\r
 159                         }\r
 160                         else\r
 161                         {\r
 162                                 ucGPIOState |= ucLED;\r
 163                         }\r
 164 \r
 165                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 166                 }\r
 167                 portEXIT_CRITICAL();\r
 168         }\r
 169 }\r
 170 \r
 171 \r
 172 \r