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

   1 /*\r
   2     FreeRTOS V7.5.1 - 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  * Simple digital IO routines.\r
  67  *-----------------------------------------------------------*/\r
  68 \r
  69 /* Kernel includes. */\r
  70 #include "FreeRTOS.h"\r
  71 \r
  72 /* Demo application includes. */\r
  73 #include "partest.h"\r
  74 \r
  75 /* Library includes. */\r
  76 #include "xgpio.h"\r
  77 \r
  78 /* The hardware design that accompanies this demo project has four LED \r
  79 outputs. */\r
  80 #define partstMAX_LED   4\r
  81 \r
  82 /*-----------------------------------------------------------*/\r
  83 \r
  84 /* A hardware specific constant required to use the Xilinx driver library. */\r
  85 static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;\r
  86 \r
  87 /* The current state of the output port. */\r
  88 static unsigned char ucGPIOState = 0U;\r
  89 \r
  90 /* Structure that hold the state of the ouptut peripheral used by this demo.\r
  91 This is used by the Xilinx peripheral driver API functions. */\r
  92 static XGpio xOutputGPIOInstance;\r
  93 \r
  94 /*\r
  95  * Setup the IO for the LED outputs.\r
  96  */\r
  97 void vParTestInitialise( void )\r
  98 {\r
  99 portBASE_TYPE xStatus;\r
 100 const unsigned char ucSetToOutput = 0U;\r
 101 \r
 102         /* Initialise the GPIO for the LEDs. */\r
 103         xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );\r
 104         if( xStatus == XST_SUCCESS )\r
 105         {\r
 106                 /* All bits on this channel are going to be outputs (LEDs). */\r
 107                 XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );\r
 108 \r
 109                 /* Start with all LEDs off. */\r
 110                 ucGPIOState = 0U;\r
 111                 XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 112         }\r
 113         \r
 114         configASSERT( xStatus == XST_SUCCESS );\r
 115 }\r
 116 /*-----------------------------------------------------------*/\r
 117 \r
 118 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 119 {\r
 120 unsigned char ucLED = 1U;\r
 121 \r
 122         /* Only attempt to set the LED if it is in range. */\r
 123         if( uxLED < partstMAX_LED )\r
 124         {\r
 125                 ucLED <<= ( unsigned char ) uxLED;\r
 126 \r
 127                 portENTER_CRITICAL();\r
 128                 {\r
 129                         if( xValue == pdFALSE )\r
 130                         {\r
 131                                 ucGPIOState &= ~ucLED;\r
 132                         }\r
 133                         else\r
 134                         {\r
 135                                 ucGPIOState |= ucLED;\r
 136                         }\r
 137                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 138                 }\r
 139                 portEXIT_CRITICAL();\r
 140         }\r
 141 }\r
 142 /*-----------------------------------------------------------*/\r
 143 \r
 144 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 145 {\r
 146 unsigned char ucLED = 1U;\r
 147 \r
 148         /* Only attempt to toggle the LED if it is in range. */\r
 149         if( uxLED < partstMAX_LED )\r
 150         {\r
 151                 ucLED <<= ( unsigned char ) uxLED;\r
 152 \r
 153                 portENTER_CRITICAL();\r
 154                 {\r
 155                         if( ( ucGPIOState & ucLED ) != 0 )\r
 156                         {\r
 157                                 ucGPIOState &= ~ucLED;\r
 158                         }\r
 159                         else\r
 160                         {\r
 161                                 ucGPIOState |= ucLED;\r
 162                         }\r
 163 \r
 164                         XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );\r
 165                 }\r
 166                 portEXIT_CRITICAL();\r
 167         }\r
 168 }\r
 169 \r
 170 \r
 171 \r