2 FreeRTOS.org V5.3.0 - Copyright (C) 2003-2009 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License (version 2) as published
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8 by the Free Software Foundation and modified by the FreeRTOS exception.
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9 **NOTE** The exception to the GPL is included to allow you to distribute a
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10 combined work that includes FreeRTOS.org without being obliged to provide
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11 the source code for any proprietary components. Alternative commercial
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12 license and support terms are also available upon request. See the
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13 licensing section of http://www.FreeRTOS.org for full details.
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15 FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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20 You should have received a copy of the GNU General Public License along
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21 with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59
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22 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 ***************************************************************************
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27 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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29 * This is a concise, step by step, 'hands on' guide that describes both *
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30 * general multitasking concepts and FreeRTOS specifics. It presents and *
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31 * explains numerous examples that are written using the FreeRTOS API. *
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32 * Full source code for all the examples is provided in an accompanying *
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35 ***************************************************************************
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39 Please ensure to read the configuration and relevant port sections of the
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40 online documentation.
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42 http://www.FreeRTOS.org - Documentation, latest information, license and
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45 http://www.SafeRTOS.com - A version that is certified for use in safety
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48 http://www.OpenRTOS.com - Commercial support, development, porting,
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49 licensing and training services.
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53 /* Scheduler includes. */
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54 #include "FreeRTOS.h"
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56 /* Demo application includes. */
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57 #include "partest.h"
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59 /* Library includes. */
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60 #include "xparameters.h"
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61 #include "xgpio_l.h"
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63 /* Misc hardware specific definitions. */
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64 #define partstALL_AS_OUTPUT 0x00
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65 #define partstCHANNEL_1 0x01
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66 #define partstMAX_4BIT_LED 0x03
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68 /* The outputs are split into two IO sections, these variables maintain the
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69 current value of either section. */
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70 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;
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72 /*-----------------------------------------------------------*/
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74 * Setup the IO for the LED outputs.
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76 void vParTestInitialise( void )
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78 /* Set both sets of LED's on the demo board to outputs. */
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79 XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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80 XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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82 /* Start with all outputs off. */
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83 uxCurrentOutput4Bit = 0;
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84 XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );
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85 uxCurrentOutput5Bit = 0;
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86 XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );
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88 /*-----------------------------------------------------------*/
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90 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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92 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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94 portENTER_CRITICAL();
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96 /* Which IO section does the LED being set/cleared belong to? The
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97 4 bit or 5 bit outputs? */
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98 if( uxLED <= partstMAX_4BIT_LED )
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100 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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101 puxCurrentValue = &uxCurrentOutput5Bit;
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105 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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106 puxCurrentValue = &uxCurrentOutput4Bit;
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107 uxLED -= partstMAX_4BIT_LED;
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110 /* Setup the bit mask accordingly. */
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111 uxLED = 0x01 << uxLED;
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113 /* Maintain the current output value. */
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116 *puxCurrentValue |= uxLED;
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120 *puxCurrentValue &= ~uxLED;
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123 /* Write the value to the port. */
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124 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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126 portEXIT_CRITICAL();
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128 /*-----------------------------------------------------------*/
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130 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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132 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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134 portENTER_CRITICAL();
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136 /* Which IO section does the LED being toggled belong to? The
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137 4 bit or 5 bit outputs? */
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138 if( uxLED <= partstMAX_4BIT_LED )
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141 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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142 puxCurrentValue = &uxCurrentOutput5Bit;
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146 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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147 puxCurrentValue = &uxCurrentOutput4Bit;
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148 uxLED -= partstMAX_4BIT_LED;
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151 /* Setup the bit mask accordingly. */
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152 uxLED = 0x01 << uxLED;
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154 /* Maintain the current output value. */
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155 if( *puxCurrentValue & uxLED )
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157 *puxCurrentValue &= ~uxLED;
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161 *puxCurrentValue |= uxLED;
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164 /* Write the value to the port. */
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165 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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167 portEXIT_CRITICAL();
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