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 /* Scheduler includes. */
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49 #include "FreeRTOS.h"
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50 #include "portable.h"
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52 /* Demo app includes. */
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53 #include "partest.h"
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55 /* Hardware specific definitions. */
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56 #include "AT91R40008.h"
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60 #define partstNUM_LEDS ( 8 )
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61 #define partstALL_OUTPUTS_OFF ( ( unsigned portLONG ) ~(0xFFFFFFFF << partstNUM_LEDS) )
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63 static unsigned portLONG ulLEDReg;
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65 /*-----------------------------------------------------------
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66 * Simple parallel port IO routines.
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67 *-----------------------------------------------------------*/
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69 static void SetLeds (unsigned int leds)
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71 unsigned portLONG ulPIOSetReg, ulPIOClearReg;
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73 /* LEDs are grouped in different port bits: P3-P6 and P16-P19.
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74 A port bit set to '0' turns an LED on, '1' turns it off. */
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76 ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 );
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77 ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078;
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79 AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg;
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80 AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg;
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82 /*-----------------------------------------------------------*/
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84 void vParTestInitialise( void )
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86 /* This is performed from main() as the io bits are shared with other setup
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87 functions. Ensure the outputs are off to start. */
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88 ulLEDReg = partstALL_OUTPUTS_OFF;
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90 /* Enable clock to PIO... */
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91 AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO;
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93 /* Enable all 8 LEDs and the four switches to be controlled by PIO... */
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94 AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12;
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96 /* Configure all LED PIO lines for output... */
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97 AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19;
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99 /* Configure all switch PIO lines for input... */
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100 AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12;
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102 /* Set initial state of LEDs. */
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103 SetLeds( ulLEDReg );
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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 /* Switch an LED on or off as requested. */
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110 if (uxLED < partstNUM_LEDS)
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114 ulLEDReg &= ~(1 << uxLED);
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118 ulLEDReg |= (1 << uxLED);
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121 SetLeds( ulLEDReg );
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124 /*-----------------------------------------------------------*/
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126 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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128 /* Toggle the state of the requested LED. */
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129 if (uxLED < partstNUM_LEDS)
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131 ulLEDReg ^= ( 1 << uxLED );
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132 SetLeds( ulLEDReg );
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