2 FreeRTOS V8.1.2 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS provides completely free yet professionally developed, *
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10 * robust, strictly quality controlled, supported, and cross *
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11 * platform software that has become a de facto standard. *
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13 * Help yourself get started quickly and support the FreeRTOS *
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14 * project by purchasing a FreeRTOS tutorial book, reference *
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15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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19 ***************************************************************************
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21 This file is part of the FreeRTOS distribution.
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23 FreeRTOS is free software; you can redistribute it and/or modify it under
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24 the terms of the GNU General Public License (version 2) as published by the
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25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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27 >>! NOTE: The modification to the GPL is included to allow you to !<<
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28 >>! distribute a combined work that includes FreeRTOS without being !<<
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29 >>! obliged to provide the source code for proprietary components !<<
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30 >>! outside of the FreeRTOS kernel. !<<
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32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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35 link: http://www.freertos.org/a00114.html
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39 ***************************************************************************
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41 * Having a problem? Start by reading the FAQ "My application does *
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42 * not run, what could be wrong?" *
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44 * http://www.FreeRTOS.org/FAQHelp.html *
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46 ***************************************************************************
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48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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49 license and Real Time Engineers Ltd. contact details.
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51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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57 licenses offer ticketed support, indemnification and middleware.
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59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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60 engineered and independently SIL3 certified version for use in safety and
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61 mission critical applications that require provable dependability.
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66 /*-----------------------------------------------------------
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67 * Simple parallel port IO routines.
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68 *-----------------------------------------------------------*/
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70 /* Kernel includes. */
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71 #include "FreeRTOS.h"
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73 /* Demo application includes. */
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74 #include "partest.h"
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76 /* Library includes. */
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77 #include "xgpio_l.h"
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79 /* Misc hardware specific definitions. */
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80 #define partstALL_AS_OUTPUT 0x00
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81 #define partstCHANNEL_1 0x01
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82 #define partstMAX_4BIT_LED 0x03
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84 /* The outputs are split into two IO sections, these variables maintain the
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85 current value of either section. */
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86 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;
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88 /*-----------------------------------------------------------*/
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90 * Setup the IO for the LED outputs.
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92 void vParTestInitialise( void )
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94 /* Set both sets of LED's on the demo board to outputs. */
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95 XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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96 XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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98 /* Start with all outputs off. */
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99 uxCurrentOutput4Bit = 0;
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100 XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );
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101 uxCurrentOutput5Bit = 0;
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102 XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );
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104 /*-----------------------------------------------------------*/
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106 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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108 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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110 portENTER_CRITICAL();
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112 /* Which IO section does the LED being set/cleared belong to? The
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113 4 bit or 5 bit outputs? */
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114 if( uxLED <= partstMAX_4BIT_LED )
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116 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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117 puxCurrentValue = &uxCurrentOutput4Bit;
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121 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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122 puxCurrentValue = &uxCurrentOutput5Bit;
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123 uxLED -= partstMAX_4BIT_LED;
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126 /* Setup the bit mask accordingly. */
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127 uxLED = 0x01 << uxLED;
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129 /* Maintain the current output value. */
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132 *puxCurrentValue |= uxLED;
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136 *puxCurrentValue &= ~uxLED;
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139 /* Write the value to the port. */
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140 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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142 portEXIT_CRITICAL();
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144 /*-----------------------------------------------------------*/
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146 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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148 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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150 portENTER_CRITICAL();
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152 /* Which IO section does the LED being toggled belong to? The
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153 4 bit or 5 bit outputs? */
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154 if( uxLED <= partstMAX_4BIT_LED )
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156 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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157 puxCurrentValue = &uxCurrentOutput4Bit;
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161 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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162 puxCurrentValue = &uxCurrentOutput5Bit;
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163 uxLED -= partstMAX_4BIT_LED;
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166 /* Setup the bit mask accordingly. */
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167 uxLED = 0x01 << uxLED;
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169 /* Maintain the current output value. */
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170 if( *puxCurrentValue & uxLED )
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172 *puxCurrentValue &= ~uxLED;
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176 *puxCurrentValue |= uxLED;
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179 /* Write the value to the port. */
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180 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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182 portEXIT_CRITICAL();
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