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

   1 /*\r
   2     FreeRTOS V8.0.1 - Copyright (C) 2014 Real Time Engineers Ltd. \r
   3     All rights reserved\r
   4 \r
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   7     ***************************************************************************\r
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  19     ***************************************************************************\r
  20 \r
  21     This file is part of the FreeRTOS distribution.\r
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  39     ***************************************************************************\r
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  62 \r
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  64 */\r
  65 \r
  66 /*-----------------------------------------------------------\r
  67  * Simple parallel port IO routines.\r
  68  *-----------------------------------------------------------*/\r
  69 \r
  70 /* Kernel includes. */\r
  71 #include "FreeRTOS.h"\r
  72 \r
  73 /* Demo application includes. */\r
  74 #include "partest.h"\r
  75 \r
  76 /* Library includes. */\r
  77 #include "xgpio_l.h"\r
  78 \r
  79 /* Misc hardware specific definitions. */\r
  80 #define partstALL_AS_OUTPUT     0x00\r
  81 #define partstCHANNEL_1         0x01\r
  82 #define partstMAX_4BIT_LED      0x03\r
  83 \r
  84 /* The outputs are split into two IO sections, these variables maintain the \r
  85 current value of either section. */\r
  86 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;\r
  87 \r
  88 /*-----------------------------------------------------------*/\r
  89 /*\r
  90  * Setup the IO for the LED outputs.\r
  91  */\r
  92 void vParTestInitialise( void )\r
  93 {\r
  94         /* Set both sets of LED's on the demo board to outputs. */\r
  95         XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  96         XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  97 \r
  98         /* Start with all outputs off. */\r
  99         uxCurrentOutput4Bit = 0;\r
 100         XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );\r
 101         uxCurrentOutput5Bit = 0;\r
 102         XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );\r
 103 }\r
 104 /*-----------------------------------------------------------*/\r
 105 \r
 106 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 107 {\r
 108 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 109 \r
 110         portENTER_CRITICAL();\r
 111         {\r
 112                 /* Which IO section does the LED being set/cleared belong to?  The\r
 113                 4 bit or 5 bit outputs? */\r
 114                 if( uxLED <= partstMAX_4BIT_LED )\r
 115                 {\r
 116                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 117                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 118                 }       \r
 119                 else\r
 120                 {\r
 121                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 122                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 123                         uxLED -= partstMAX_4BIT_LED;\r
 124                 }\r
 125 \r
 126                 /* Setup the bit mask accordingly. */\r
 127                 uxLED = 0x01 << uxLED;\r
 128 \r
 129                 /* Maintain the current output value. */\r
 130                 if( xValue )\r
 131                 {\r
 132                         *puxCurrentValue |= uxLED;\r
 133                 }\r
 134                 else\r
 135                 {\r
 136                         *puxCurrentValue &= ~uxLED;\r
 137                 }\r
 138 \r
 139                 /* Write the value to the port. */\r
 140                 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 141         }\r
 142         portEXIT_CRITICAL();\r
 143 }\r
 144 /*-----------------------------------------------------------*/\r
 145 \r
 146 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 147 {\r
 148 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 149 \r
 150         portENTER_CRITICAL();\r
 151         {\r
 152                 /* Which IO section does the LED being toggled belong to?  The\r
 153                 4 bit or 5 bit outputs? */\r
 154                 if( uxLED <= partstMAX_4BIT_LED )\r
 155                 {\r
 156                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 157                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 158                 }       \r
 159                 else\r
 160                 {\r
 161                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 162                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 163                         uxLED -= partstMAX_4BIT_LED;\r
 164                 }\r
 165 \r
 166                 /* Setup the bit mask accordingly. */\r
 167                 uxLED = 0x01 << uxLED;\r
 168 \r
 169                 /* Maintain the current output value. */\r
 170                 if( *puxCurrentValue & uxLED )\r
 171                 {\r
 172                         *puxCurrentValue &= ~uxLED;\r
 173                 }\r
 174                 else\r
 175                 {\r
 176                         *puxCurrentValue |= uxLED;\r
 177                 }\r
 178 \r
 179                 /* Write the value to the port. */\r
 180                 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 181         }\r
 182         portEXIT_CRITICAL();\r
 183 }\r
 184 \r
 185 \r