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

   1 /*\r
   2     FreeRTOS V8.2.0rc1 - 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     This file is part of the FreeRTOS distribution.\r
   8 \r
   9     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  10     the terms of the GNU General Public License (version 2) as published by the\r
  11     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  12 \r
  13     >>!   NOTE: The modification to the GPL is included to allow you to     !<<\r
  14     >>!   distribute a combined work that includes FreeRTOS without being   !<<\r
  15     >>!   obliged to provide the source code for proprietary components     !<<\r
  16     >>!   outside of the FreeRTOS kernel.                                   !<<\r
  17 \r
  18     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  19     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  20     FOR A PARTICULAR PURPOSE.  Full license text is available on the following\r
  21     link: http://www.freertos.org/a00114.html\r
  22 \r
  23     1 tab == 4 spaces!\r
  24 \r
  25     ***************************************************************************\r
  26      *                                                                       *\r
  27      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  28      *    not run, what could be wrong?".  Have you defined configASSERT()?  *\r
  29      *                                                                       *\r
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  31      *                                                                       *\r
  32     ***************************************************************************\r
  33 \r
  34     ***************************************************************************\r
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  47 \r
  48     ***************************************************************************\r
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  62     ***************************************************************************\r
  63 \r
  64     ***************************************************************************\r
  65      *                                                                       *\r
  66      *    You are receiving this top quality software for free.  Please play *\r
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  73     ***************************************************************************\r
  74 \r
  75     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
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  77 \r
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  91     mission critical applications that require provable dependability.\r
  92 \r
  93     1 tab == 4 spaces!\r
  94 */\r
  95 \r
  96 /*-----------------------------------------------------------\r
  97  * Simple digital IO routines.\r
  98  *-----------------------------------------------------------*/\r
  99 \r
 100 /* Kernel includes. */\r
 101 #include "FreeRTOS.h"\r
 102 \r
 103 /* Demo application includes. */\r
 104 #include "partest.h"\r
 105 \r
 106 /* Library includes. */\r
 107 #include "xgpio.h"\r
 108 \r
 109 /* The hardware design that accompanies this demo project has four LED \r
 110 outputs. */\r
 111 #define partstMAX_LED   4\r
 112 \r
 113 /*-----------------------------------------------------------*/\r
 114 \r
 115 /* A hardware specific constant required to use the Xilinx driver library. */\r
 116 static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;\r
 117 \r
 118 /* The current state of the output port. */\r
 119 static unsigned char ucGPIOState = 0U;\r
 120 \r
 121 /* Structure that hold the state of the ouptut peripheral used by this demo.\r
 122 This is used by the Xilinx peripheral driver API functions. */\r
 123 static XGpio xOutputGPIOInstance;\r
 124 \r
 125 /*\r
 126  * Setup the IO for the LED outputs.\r
 127  */\r
 128 void vParTestInitialise( void )\r
 129 {\r
 130 portBASE_TYPE xStatus;\r
 131 const unsigned char ucSetToOutput = 0U;\r
 132 \r
 133         /* Initialise the GPIO for the LEDs. */\r
 134         xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );\r
 135         if( xStatus == XST_SUCCESS )\r
 136         {\r
 137                 /* All bits on this channel are going to be outputs (LEDs). */\r
 138                 XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );\r
 139 \r
 140                 /* Start with all LEDs off. */\r
 141                 ucGPIOState = 0U;\r
 142                 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 143         }\r
 144         \r
 145         configASSERT( xStatus == XST_SUCCESS );\r
 146 }\r
 147 /*-----------------------------------------------------------*/\r
 148 \r
 149 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 150 {\r
 151 unsigned char ucLED = 1U;\r
 152 \r
 153         /* Only attempt to set the LED if it is in range. */\r
 154         if( uxLED < partstMAX_LED )\r
 155         {\r
 156                 ucLED <<= ( unsigned char ) uxLED;\r
 157 \r
 158                 portENTER_CRITICAL();\r
 159                 {\r
 160                         if( xValue == pdFALSE )\r
 161                         {\r
 162                                 ucGPIOState &= ~ucLED;\r
 163                         }\r
 164                         else\r
 165                         {\r
 166                                 ucGPIOState |= ucLED;\r
 167                         }\r
 168                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 169                 }\r
 170                 portEXIT_CRITICAL();\r
 171         }\r
 172 }\r
 173 /*-----------------------------------------------------------*/\r
 174 \r
 175 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 176 {\r
 177 unsigned char ucLED = 1U;\r
 178 \r
 179         /* Only attempt to toggle the LED if it is in range. */\r
 180         if( uxLED < partstMAX_LED )\r
 181         {\r
 182                 ucLED <<= ( unsigned char ) uxLED;\r
 183 \r
 184                 portENTER_CRITICAL();\r
 185                 {\r
 186                         if( ( ucGPIOState & ucLED ) != 0 )\r
 187                         {\r
 188                                 ucGPIOState &= ~ucLED;\r
 189                         }\r
 190                         else\r
 191                         {\r
 192                                 ucGPIOState |= ucLED;\r
 193                         }\r
 194 \r
 195                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 196                 }\r
 197                 portEXIT_CRITICAL();\r
 198         }\r
 199 }\r
 200 \r
 201 \r
 202 \r