git.sur5r.net Git - freertos/blob - Demo/MicroBlaze/ParTest/ParTest.c

   1 /*\r
   2     FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.\r
   3 \r
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  24 \r
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  26 \r
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  28     the terms of the GNU General Public License (version 2) as published by the\r
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  44     http://www.FreeRTOS.org - Documentation, latest information, license and\r
  45     contact details.\r
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  48     critical systems.\r
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  52 */\r
  53 \r
  54 /*-----------------------------------------------------------\r
  55  * Simple parallel port IO routines.\r
  56  *-----------------------------------------------------------*/\r
  57 \r
  58 /* Kernel includes. */\r
  59 #include "FreeRTOS.h"\r
  60 \r
  61 /* Demo application includes. */\r
  62 #include "partest.h"\r
  63 \r
  64 /* Library includes. */\r
  65 #include "xgpio_l.h"\r
  66 \r
  67 /* Misc hardware specific definitions. */\r
  68 #define partstALL_AS_OUTPUT     0x00\r
  69 #define partstCHANNEL_1         0x01\r
  70 #define partstMAX_4BIT_LED      0x03\r
  71 \r
  72 /* The outputs are split into two IO sections, these variables maintain the \r
  73 current value of either section. */\r
  74 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;\r
  75 \r
  76 /*-----------------------------------------------------------*/\r
  77 /*\r
  78  * Setup the IO for the LED outputs.\r
  79  */\r
  80 void vParTestInitialise( void )\r
  81 {\r
  82         /* Set both sets of LED's on the demo board to outputs. */\r
  83         XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  84         XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  85 \r
  86         /* Start with all outputs off. */\r
  87         uxCurrentOutput4Bit = 0;\r
  88         XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );\r
  89         uxCurrentOutput5Bit = 0;\r
  90         XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );\r
  91 }\r
  92 /*-----------------------------------------------------------*/\r
  93 \r
  94 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
  95 {\r
  96 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
  97 \r
  98         portENTER_CRITICAL();\r
  99         {\r
 100                 /* Which IO section does the LED being set/cleared belong to?  The\r
 101                 4 bit or 5 bit outputs? */\r
 102                 if( uxLED <= partstMAX_4BIT_LED )\r
 103                 {\r
 104                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 105                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 106                 }       \r
 107                 else\r
 108                 {\r
 109                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 110                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 111                         uxLED -= partstMAX_4BIT_LED;\r
 112                 }\r
 113 \r
 114                 /* Setup the bit mask accordingly. */\r
 115                 uxLED = 0x01 << uxLED;\r
 116 \r
 117                 /* Maintain the current output value. */\r
 118                 if( xValue )\r
 119                 {\r
 120                         *puxCurrentValue |= uxLED;\r
 121                 }\r
 122                 else\r
 123                 {\r
 124                         *puxCurrentValue &= ~uxLED;\r
 125                 }\r
 126 \r
 127                 /* Write the value to the port. */\r
 128                 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 129         }\r
 130         portEXIT_CRITICAL();\r
 131 }\r
 132 /*-----------------------------------------------------------*/\r
 133 \r
 134 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 135 {\r
 136 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 137 \r
 138         portENTER_CRITICAL();\r
 139         {\r
 140                 /* Which IO section does the LED being toggled belong to?  The\r
 141                 4 bit or 5 bit outputs? */\r
 142                 if( uxLED <= partstMAX_4BIT_LED )\r
 143                 {\r
 144                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 145                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 146                 }       \r
 147                 else\r
 148                 {\r
 149                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 150                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 151                         uxLED -= partstMAX_4BIT_LED;\r
 152                 }\r
 153 \r
 154                 /* Setup the bit mask accordingly. */\r
 155                 uxLED = 0x01 << uxLED;\r
 156 \r
 157                 /* Maintain the current output value. */\r
 158                 if( *puxCurrentValue & uxLED )\r
 159                 {\r
 160                         *puxCurrentValue &= ~uxLED;\r
 161                 }\r
 162                 else\r
 163                 {\r
 164                         *puxCurrentValue |= uxLED;\r
 165                 }\r
 166 \r
 167                 /* Write the value to the port. */\r
 168                 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 169         }\r
 170         portEXIT_CRITICAL();\r
 171 }\r
 172 \r
 173 \r