2 * FreeRTOS Kernel V10.0.0
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3 * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software. If you wish to use our Amazon
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14 * FreeRTOS name, please do so in a fair use way that does not cause confusion.
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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18 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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19 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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20 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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23 * http://www.FreeRTOS.org
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24 * http://aws.amazon.com/freertos
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26 * 1 tab == 4 spaces!
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29 /* Scheduler includes. */
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30 #include "FreeRTOS.h"
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31 #include "portable.h"
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33 /* Demo app includes. */
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34 #include "partest.h"
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36 /* Hardware specific definitions. */
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37 #include "AT91R40008.h"
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41 #define partstNUM_LEDS ( 8 )
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42 #define partstALL_OUTPUTS_OFF ( ( unsigned long ) ~(0xFFFFFFFF << partstNUM_LEDS) )
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44 static unsigned long ulLEDReg;
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46 /*-----------------------------------------------------------
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47 * Simple parallel port IO routines.
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48 *-----------------------------------------------------------*/
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50 static void SetLeds (unsigned int leds)
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52 unsigned long ulPIOSetReg, ulPIOClearReg;
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54 /* LEDs are grouped in different port bits: P3-P6 and P16-P19.
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55 A port bit set to '0' turns an LED on, '1' turns it off. */
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57 ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 );
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58 ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078;
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60 AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg;
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61 AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg;
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63 /*-----------------------------------------------------------*/
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65 void vParTestInitialise( void )
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67 /* This is performed from main() as the io bits are shared with other setup
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68 functions. Ensure the outputs are off to start. */
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69 ulLEDReg = partstALL_OUTPUTS_OFF;
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71 /* Enable clock to PIO... */
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72 AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO;
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74 /* Enable all 8 LEDs and the four switches to be controlled by PIO... */
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75 AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12;
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77 /* Configure all LED PIO lines for output... */
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78 AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19;
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80 /* Configure all switch PIO lines for input... */
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81 AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12;
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83 /* Set initial state of LEDs. */
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84 SetLeds( ulLEDReg );
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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 /* Switch an LED on or off as requested. */
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91 if (uxLED < partstNUM_LEDS)
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95 ulLEDReg &= ~(1 << uxLED);
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99 ulLEDReg |= (1 << uxLED);
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102 SetLeds( ulLEDReg );
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105 /*-----------------------------------------------------------*/
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107 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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109 /* Toggle the state of the requested LED. */
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110 if (uxLED < partstNUM_LEDS)
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112 ulLEDReg ^= ( 1 << uxLED );
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113 SetLeds( ulLEDReg );
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