2 FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License (version 2) as published by the
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8 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 without being obliged to provide the
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11 source code for proprietary components outside of the FreeRTOS kernel.
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12 Alternative commercial license and support terms are also available upon
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13 request. See the licensing section of http://www.FreeRTOS.org for full
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16 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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21 You should have received a copy of the GNU General Public License along
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22 with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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23 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 ***************************************************************************
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28 * Looking for a quick start? Then check out the FreeRTOS eBook! *
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29 * See http://www.FreeRTOS.org/Documentation for details *
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31 ***************************************************************************
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35 Please ensure to read the configuration and relevant port sections of the
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36 online documentation.
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38 http://www.FreeRTOS.org - Documentation, latest information, license and
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41 http://www.SafeRTOS.com - A version that is certified for use in safety
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44 http://www.OpenRTOS.com - Commercial support, development, porting,
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45 licensing and training services.
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48 /*-----------------------------------------------------------
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49 * Simple parallel port IO routines.
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50 *-----------------------------------------------------------*/
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52 /* Kernel includes. */
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53 #include "FreeRTOS.h"
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55 /* Demo application includes. */
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56 #include "partest.h"
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58 /* Library includes. */
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59 #include "xgpio_l.h"
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61 /* Misc hardware specific definitions. */
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62 #define partstALL_AS_OUTPUT 0x00
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63 #define partstCHANNEL_1 0x01
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64 #define partstMAX_4BIT_LED 0x03
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66 /* The outputs are split into two IO sections, these variables maintain the
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67 current value of either section. */
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68 static unsigned portBASE_TYPE uxCurrentOutput4Bit, uxCurrentOutput5Bit;
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70 /*-----------------------------------------------------------*/
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72 * Setup the IO for the LED outputs.
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74 void vParTestInitialise( void )
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76 /* Set both sets of LED's on the demo board to outputs. */
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77 XGpio_mSetDataDirection( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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78 XGpio_mSetDataDirection( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, partstALL_AS_OUTPUT );
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80 /* Start with all outputs off. */
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81 uxCurrentOutput4Bit = 0;
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82 XGpio_mSetDataReg( XPAR_LEDS_4BIT_BASEADDR, partstCHANNEL_1, 0x00 );
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83 uxCurrentOutput5Bit = 0;
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84 XGpio_mSetDataReg( XPAR_LEDS_POSITIONS_BASEADDR, partstCHANNEL_1, 0x00 );
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86 /*-----------------------------------------------------------*/
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88 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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90 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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92 portENTER_CRITICAL();
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94 /* Which IO section does the LED being set/cleared belong to? The
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95 4 bit or 5 bit outputs? */
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96 if( uxLED <= partstMAX_4BIT_LED )
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98 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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99 puxCurrentValue = &uxCurrentOutput4Bit;
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103 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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104 puxCurrentValue = &uxCurrentOutput5Bit;
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105 uxLED -= partstMAX_4BIT_LED;
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108 /* Setup the bit mask accordingly. */
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109 uxLED = 0x01 << uxLED;
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111 /* Maintain the current output value. */
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114 *puxCurrentValue |= uxLED;
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118 *puxCurrentValue &= ~uxLED;
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121 /* Write the value to the port. */
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122 XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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124 portEXIT_CRITICAL();
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126 /*-----------------------------------------------------------*/
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128 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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130 unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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132 portENTER_CRITICAL();
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134 /* Which IO section does the LED being toggled belong to? The
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135 4 bit or 5 bit outputs? */
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136 if( uxLED <= partstMAX_4BIT_LED )
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138 uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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139 puxCurrentValue = &uxCurrentOutput4Bit;
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143 uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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144 puxCurrentValue = &uxCurrentOutput5Bit;
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145 uxLED -= partstMAX_4BIT_LED;
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148 /* Setup the bit mask accordingly. */
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149 uxLED = 0x01 << uxLED;
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151 /* Maintain the current output value. */
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152 if( *puxCurrentValue & uxLED )
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154 *puxCurrentValue &= ~uxLED;
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158 *puxCurrentValue |= uxLED;
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161 /* Write the value to the port. */
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162 XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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164 portEXIT_CRITICAL();
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