2 FreeRTOS V7.2.0 - Copyright (C) 2012 Real Time Engineers Ltd.
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5 ***************************************************************************
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7 * FreeRTOS tutorial books are available in pdf and paperback. *
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8 * Complete, revised, and edited pdf reference manuals are also *
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11 * Purchasing FreeRTOS documentation will not only help you, by *
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12 * ensuring you get running as quickly as possible and with an *
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13 * in-depth knowledge of how to use FreeRTOS, it will also help *
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14 * the FreeRTOS project to continue with its mission of providing *
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15 * professional grade, cross platform, de facto standard solutions *
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16 * for microcontrollers - completely free of charge! *
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18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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20 * Thank you for using FreeRTOS, and thank you for your support! *
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22 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 >>>NOTE<<< The modification to the GPL is included to allow you to
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31 distribute a combined work that includes FreeRTOS without being obliged to
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32 provide the source code for proprietary components outside of the FreeRTOS
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33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 ***************************************************************************
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46 * Having a problem? Start by reading the FAQ "My application does *
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47 * not run, what could be wrong? *
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49 * http://www.FreeRTOS.org/FAQHelp.html *
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51 ***************************************************************************
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54 http://www.FreeRTOS.org - Documentation, training, latest information,
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55 license and contact details.
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57 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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58 including FreeRTOS+Trace - an indispensable productivity tool.
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60 Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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61 the code with commercial support, indemnification, and middleware, under
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62 the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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63 provide a safety engineered and independently SIL3 certified version under
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64 the SafeRTOS brand: http://www.SafeRTOS.com.
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67 /*-----------------------------------------------------------
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68 * Simple parallel port IO routines.
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69 *-----------------------------------------------------------*/
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71 /* Kernel includes. */
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72 #include "FreeRTOS.h"
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74 /* Demo application includes. */
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75 #include "partest.h"
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77 /* Library includes. */
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78 #include "xgpio_l.h"
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80 /* Misc hardware specific definitions. */
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81 #define partstALL_AS_OUTPUT 0x00
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82 #define partstCHANNEL_1 0x01
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83 #define partstMAX_4BIT_LED 0x03
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85 /* The outputs are split into two IO sections, these variables maintain the
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86 current value of either section. */
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87 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;
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89 /*-----------------------------------------------------------*/
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91 * Setup the IO for the LED outputs.
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93 void vParTestInitialise( void )
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95 /* Set both sets of LED's on the demo board to outputs. */
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96 XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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97 XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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99 /* Start with all outputs off. */
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100 uxCurrentOutput4Bit = 0;
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101 XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );
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102 uxCurrentOutput5Bit = 0;
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103 XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );
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105 /*-----------------------------------------------------------*/
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107 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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109 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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111 portENTER_CRITICAL();
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113 /* Which IO section does the LED being set/cleared belong to? The
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114 4 bit or 5 bit outputs? */
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115 if( uxLED <= partstMAX_4BIT_LED )
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117 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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118 puxCurrentValue = &uxCurrentOutput4Bit;
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122 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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123 puxCurrentValue = &uxCurrentOutput5Bit;
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124 uxLED -= partstMAX_4BIT_LED;
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127 /* Setup the bit mask accordingly. */
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128 uxLED = 0x01 << uxLED;
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130 /* Maintain the current output value. */
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133 *puxCurrentValue |= uxLED;
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137 *puxCurrentValue &= ~uxLED;
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140 /* Write the value to the port. */
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141 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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143 portEXIT_CRITICAL();
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145 /*-----------------------------------------------------------*/
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147 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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149 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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151 portENTER_CRITICAL();
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153 /* Which IO section does the LED being toggled belong to? The
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154 4 bit or 5 bit outputs? */
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155 if( uxLED <= partstMAX_4BIT_LED )
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157 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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158 puxCurrentValue = &uxCurrentOutput4Bit;
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162 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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163 puxCurrentValue = &uxCurrentOutput5Bit;
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164 uxLED -= partstMAX_4BIT_LED;
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167 /* Setup the bit mask accordingly. */
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168 uxLED = 0x01 << uxLED;
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170 /* Maintain the current output value. */
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171 if( *puxCurrentValue & uxLED )
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173 *puxCurrentValue &= ~uxLED;
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177 *puxCurrentValue |= uxLED;
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180 /* Write the value to the port. */
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181 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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183 portEXIT_CRITICAL();
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