git.sur5r.net Git - freertos/blob - FreeRTOS/Demo/MicroBlaze/ParTest/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
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  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
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  24 \r
  25     ***************************************************************************\r
  26      *                                                                       *\r
  27      *    Having a problem?  Start by reading the FAQ "My application does   *\r
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  63 \r
  64     ***************************************************************************\r
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  92 \r
  93     1 tab == 4 spaces!\r
  94 */\r
  95 \r
  96 /*-----------------------------------------------------------\r
  97  * Simple parallel port 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_l.h"\r
 108 \r
 109 /* Misc hardware specific definitions. */\r
 110 #define partstALL_AS_OUTPUT     0x00\r
 111 #define partstCHANNEL_1         0x01\r
 112 #define partstMAX_4BIT_LED      0x03\r
 113 \r
 114 /* The outputs are split into two IO sections, these variables maintain the \r
 115 current value of either section. */\r
 116 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;\r
 117 \r
 118 /*-----------------------------------------------------------*/\r
 119 /*\r
 120  * Setup the IO for the LED outputs.\r
 121  */\r
 122 void vParTestInitialise( void )\r
 123 {\r
 124         /* Set both sets of LED's on the demo board to outputs. */\r
 125         XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
 126         XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
 127 \r
 128         /* Start with all outputs off. */\r
 129         uxCurrentOutput4Bit = 0;\r
 130         XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );\r
 131         uxCurrentOutput5Bit = 0;\r
 132         XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );\r
 133 }\r
 134 /*-----------------------------------------------------------*/\r
 135 \r
 136 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 137 {\r
 138 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 139 \r
 140         portENTER_CRITICAL();\r
 141         {\r
 142                 /* Which IO section does the LED being set/cleared belong to?  The\r
 143                 4 bit or 5 bit outputs? */\r
 144                 if( uxLED <= partstMAX_4BIT_LED )\r
 145                 {\r
 146                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 147                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 148                 }       \r
 149                 else\r
 150                 {\r
 151                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 152                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 153                         uxLED -= partstMAX_4BIT_LED;\r
 154                 }\r
 155 \r
 156                 /* Setup the bit mask accordingly. */\r
 157                 uxLED = 0x01 << uxLED;\r
 158 \r
 159                 /* Maintain the current output value. */\r
 160                 if( xValue )\r
 161                 {\r
 162                         *puxCurrentValue |= uxLED;\r
 163                 }\r
 164                 else\r
 165                 {\r
 166                         *puxCurrentValue &= ~uxLED;\r
 167                 }\r
 168 \r
 169                 /* Write the value to the port. */\r
 170                 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 171         }\r
 172         portEXIT_CRITICAL();\r
 173 }\r
 174 /*-----------------------------------------------------------*/\r
 175 \r
 176 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 177 {\r
 178 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 179 \r
 180         portENTER_CRITICAL();\r
 181         {\r
 182                 /* Which IO section does the LED being toggled belong to?  The\r
 183                 4 bit or 5 bit outputs? */\r
 184                 if( uxLED <= partstMAX_4BIT_LED )\r
 185                 {\r
 186                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 187                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 188                 }       \r
 189                 else\r
 190                 {\r
 191                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 192                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 193                         uxLED -= partstMAX_4BIT_LED;\r
 194                 }\r
 195 \r
 196                 /* Setup the bit mask accordingly. */\r
 197                 uxLED = 0x01 << uxLED;\r
 198 \r
 199                 /* Maintain the current output value. */\r
 200                 if( *puxCurrentValue & uxLED )\r
 201                 {\r
 202                         *puxCurrentValue &= ~uxLED;\r
 203                 }\r
 204                 else\r
 205                 {\r
 206                         *puxCurrentValue |= uxLED;\r
 207                 }\r
 208 \r
 209                 /* Write the value to the port. */\r
 210                 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 211         }\r
 212         portEXIT_CRITICAL();\r
 213 }\r
 214 \r
 215 \r