2 FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not itcan be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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75 /*-----------------------------------------------------------
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76 * Simple parallel port IO routines.
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77 *-----------------------------------------------------------*/
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79 /* Kernel includes. */
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80 #include "FreeRTOS.h"
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82 /* Demo application includes. */
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83 #include "partest.h"
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85 /* Library includes. */
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86 #include "xgpio_l.h"
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88 /* Misc hardware specific definitions. */
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89 #define partstALL_AS_OUTPUT 0x00
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90 #define partstCHANNEL_1 0x01
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91 #define partstMAX_4BIT_LED 0x03
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93 /* The outputs are split into two IO sections, these variables maintain the
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94 current value of either section. */
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95 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;
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97 /*-----------------------------------------------------------*/
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99 * Setup the IO for the LED outputs.
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101 void vParTestInitialise( void )
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103 /* Set both sets of LED's on the demo board to outputs. */
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104 XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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105 XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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107 /* Start with all outputs off. */
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108 uxCurrentOutput4Bit = 0;
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109 XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );
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110 uxCurrentOutput5Bit = 0;
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111 XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );
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113 /*-----------------------------------------------------------*/
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115 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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117 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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119 portENTER_CRITICAL();
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121 /* Which IO section does the LED being set/cleared belong to? The
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122 4 bit or 5 bit outputs? */
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123 if( uxLED <= partstMAX_4BIT_LED )
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125 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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126 puxCurrentValue = &uxCurrentOutput4Bit;
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130 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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131 puxCurrentValue = &uxCurrentOutput5Bit;
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132 uxLED -= partstMAX_4BIT_LED;
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135 /* Setup the bit mask accordingly. */
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136 uxLED = 0x01 << uxLED;
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138 /* Maintain the current output value. */
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141 *puxCurrentValue |= uxLED;
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145 *puxCurrentValue &= ~uxLED;
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148 /* Write the value to the port. */
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149 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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151 portEXIT_CRITICAL();
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153 /*-----------------------------------------------------------*/
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155 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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157 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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159 portENTER_CRITICAL();
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161 /* Which IO section does the LED being toggled belong to? The
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162 4 bit or 5 bit outputs? */
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163 if( uxLED <= partstMAX_4BIT_LED )
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165 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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166 puxCurrentValue = &uxCurrentOutput4Bit;
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170 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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171 puxCurrentValue = &uxCurrentOutput5Bit;
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172 uxLED -= partstMAX_4BIT_LED;
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175 /* Setup the bit mask accordingly. */
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176 uxLED = 0x01 << uxLED;
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178 /* Maintain the current output value. */
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179 if( *puxCurrentValue & uxLED )
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181 *puxCurrentValue &= ~uxLED;
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185 *puxCurrentValue |= uxLED;
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188 /* Write the value to the port. */
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189 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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191 portEXIT_CRITICAL();
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