begriffs open source - freertos/blob - Demo/MicroBlaze/ParTest/ParTest.c

   1 /*\r
   2         FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.\r
   3 \r
   4         This file is part of the FreeRTOS.org distribution.\r
   5 \r
   6         FreeRTOS.org is free software; you can redistribute it and/or modify\r
   7         it under the terms of the GNU General Public License as published by\r
   8         the Free Software Foundation; either version 2 of the License, or\r
   9         (at your option) any later version.\r
  10 \r
  11         FreeRTOS.org is distributed in the hope that it will be useful,\r
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14         GNU General Public License for more details.\r
  15 \r
  16         You should have received a copy of the GNU General Public License\r
  17         along with FreeRTOS.org; if not, write to the Free Software\r
  18         Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA\r
  19 \r
  20         A special exception to the GPL can be applied should you wish to distribute\r
  21         a combined work that includes FreeRTOS.org, without being obliged to provide\r
  22         the source code for any proprietary components.  See the licensing section \r
  23         of http://www.FreeRTOS.org for full details of how and when the exception\r
  24         can be applied.\r
  25 \r
  26     ***************************************************************************\r
  27     ***************************************************************************\r
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  32     * expedite your project.                                                  *\r
  33     *                                                                         *\r
  34     ***************************************************************************\r
  35     ***************************************************************************\r
  36 \r
  37         Please ensure to read the configuration and relevant port sections of the\r
  38         online documentation.\r
  39 \r
  40         http://www.FreeRTOS.org - Documentation, latest information, license and \r
  41         contact details.\r
  42 \r
  43         http://www.SafeRTOS.com - A version that is certified for use in safety \r
  44         critical systems.\r
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  46         http://www.OpenRTOS.com - Commercial support, development, porting, \r
  47         licensing and training services.\r
  48 */\r
  49 \r
  50 /*-----------------------------------------------------------\r
  51  * Simple parallel port IO routines.\r
  52  *-----------------------------------------------------------*/\r
  53 \r
  54 /* Kernel includes. */\r
  55 #include "FreeRTOS.h"\r
  56 \r
  57 /* Demo application includes. */\r
  58 #include "partest.h"\r
  59 \r
  60 /* Library includes. */\r
  61 #include "xgpio_l.h"\r
  62 \r
  63 /* Misc hardware specific definitions. */\r
  64 #define partstALL_AS_OUTPUT     0x00\r
  65 #define partstCHANNEL_1         0x01\r
  66 #define partstMAX_4BIT_LED      0x03\r
  67 \r
  68 /* The outputs are split into two IO sections, these variables maintain the \r
  69 current value of either section. */\r
  70 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;\r
  71 \r
  72 /*-----------------------------------------------------------*/\r
  73 /*\r
  74  * Setup the IO for the LED outputs.\r
  75  */\r
  76 void vParTestInitialise( void )\r
  77 {\r
  78         /* Set both sets of LED's on the demo board to outputs. */\r
  79         XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  80         XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  81 \r
  82         /* Start with all outputs off. */\r
  83         uxCurrentOutput4Bit = 0;\r
  84         XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );\r
  85         uxCurrentOutput5Bit = 0;\r
  86         XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );\r
  87 }\r
  88 /*-----------------------------------------------------------*/\r
  89 \r
  90 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
  91 {\r
  92 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
  93 \r
  94         portENTER_CRITICAL();\r
  95         {\r
  96                 /* Which IO section does the LED being set/cleared belong to?  The\r
  97                 4 bit or 5 bit outputs? */\r
  98                 if( uxLED <= partstMAX_4BIT_LED )\r
  99                 {\r
 100                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 101                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 102                 }       \r
 103                 else\r
 104                 {\r
 105                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 106                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 107                         uxLED -= partstMAX_4BIT_LED;\r
 108                 }\r
 109 \r
 110                 /* Setup the bit mask accordingly. */\r
 111                 uxLED = 0x01 << uxLED;\r
 112 \r
 113                 /* Maintain the current output value. */\r
 114                 if( xValue )\r
 115                 {\r
 116                         *puxCurrentValue |= uxLED;\r
 117                 }\r
 118                 else\r
 119                 {\r
 120                         *puxCurrentValue &= ~uxLED;\r
 121                 }\r
 122 \r
 123                 /* Write the value to the port. */\r
 124                 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 125         }\r
 126         portEXIT_CRITICAL();\r
 127 }\r
 128 /*-----------------------------------------------------------*/\r
 129 \r
 130 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 131 {\r
 132 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 133 \r
 134         portENTER_CRITICAL();\r
 135         {\r
 136                 /* Which IO section does the LED being toggled belong to?  The\r
 137                 4 bit or 5 bit outputs? */\r
 138                 if( uxLED <= partstMAX_4BIT_LED )\r
 139                 {\r
 140                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 141                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 142                 }       \r
 143                 else\r
 144                 {\r
 145                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 146                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 147                         uxLED -= partstMAX_4BIT_LED;\r
 148                 }\r
 149 \r
 150                 /* Setup the bit mask accordingly. */\r
 151                 uxLED = 0x01 << uxLED;\r
 152 \r
 153                 /* Maintain the current output value. */\r
 154                 if( *puxCurrentValue & uxLED )\r
 155                 {\r
 156                         *puxCurrentValue &= ~uxLED;\r
 157                 }\r
 158                 else\r
 159                 {\r
 160                         *puxCurrentValue |= uxLED;\r
 161                 }\r
 162 \r
 163                 /* Write the value to the port. */\r
 164                 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 165         }\r
 166         portEXIT_CRITICAL();\r
 167 }\r
 168 \r
 169 \r