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

   1 /*\r
   2     FreeRTOS V7.5.1 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
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  19 \r
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  63 */\r
  64 \r
  65 /*-----------------------------------------------------------\r
  66  * Simple parallel port 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_l.h"\r
  77 \r
  78 /* Misc hardware specific definitions. */\r
  79 #define partstALL_AS_OUTPUT     0x00\r
  80 #define partstCHANNEL_1         0x01\r
  81 #define partstMAX_4BIT_LED      0x03\r
  82 \r
  83 /* The outputs are split into two IO sections, these variables maintain the \r
  84 current value of either section. */\r
  85 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;\r
  86 \r
  87 /*-----------------------------------------------------------*/\r
  88 /*\r
  89  * Setup the IO for the LED outputs.\r
  90  */\r
  91 void vParTestInitialise( void )\r
  92 {\r
  93         /* Set both sets of LED's on the demo board to outputs. */\r
  94         XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  95         XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );\r
  96 \r
  97         /* Start with all outputs off. */\r
  98         uxCurrentOutput4Bit = 0;\r
  99         XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );\r
 100         uxCurrentOutput5Bit = 0;\r
 101         XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );\r
 102 }\r
 103 /*-----------------------------------------------------------*/\r
 104 \r
 105 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )\r
 106 {\r
 107 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 108 \r
 109         portENTER_CRITICAL();\r
 110         {\r
 111                 /* Which IO section does the LED being set/cleared belong to?  The\r
 112                 4 bit or 5 bit outputs? */\r
 113                 if( uxLED <= partstMAX_4BIT_LED )\r
 114                 {\r
 115                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 116                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 117                 }       \r
 118                 else\r
 119                 {\r
 120                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 121                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 122                         uxLED -= partstMAX_4BIT_LED;\r
 123                 }\r
 124 \r
 125                 /* Setup the bit mask accordingly. */\r
 126                 uxLED = 0x01 << uxLED;\r
 127 \r
 128                 /* Maintain the current output value. */\r
 129                 if( xValue )\r
 130                 {\r
 131                         *puxCurrentValue |= uxLED;\r
 132                 }\r
 133                 else\r
 134                 {\r
 135                         *puxCurrentValue &= ~uxLED;\r
 136                 }\r
 137 \r
 138                 /* Write the value to the port. */\r
 139                 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 140         }\r
 141         portEXIT_CRITICAL();\r
 142 }\r
 143 /*-----------------------------------------------------------*/\r
 144 \r
 145 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )\r
 146 {\r
 147 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;\r
 148 \r
 149         portENTER_CRITICAL();\r
 150         {\r
 151                 /* Which IO section does the LED being toggled belong to?  The\r
 152                 4 bit or 5 bit outputs? */\r
 153                 if( uxLED <= partstMAX_4BIT_LED )\r
 154                 {\r
 155                         uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;\r
 156                         puxCurrentValue = &uxCurrentOutput4Bit;\r
 157                 }       \r
 158                 else\r
 159                 {\r
 160                         uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;\r
 161                         puxCurrentValue = &uxCurrentOutput5Bit;\r
 162                         uxLED -= partstMAX_4BIT_LED;\r
 163                 }\r
 164 \r
 165                 /* Setup the bit mask accordingly. */\r
 166                 uxLED = 0x01 << uxLED;\r
 167 \r
 168                 /* Maintain the current output value. */\r
 169                 if( *puxCurrentValue & uxLED )\r
 170                 {\r
 171                         *puxCurrentValue &= ~uxLED;\r
 172                 }\r
 173                 else\r
 174                 {\r
 175                         *puxCurrentValue |= uxLED;\r
 176                 }\r
 177 \r
 178                 /* Write the value to the port. */\r
 179                 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );\r
 180         }\r
 181         portEXIT_CRITICAL();\r
 182 }\r
 183 \r
 184 \r