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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32 + Use scheduler suspends in place of critical sections.
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36 + Replaced the inb() and outb() functions with direct memory
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37 access. This allows the port to be built with the 20050414 build of
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41 #include "FreeRTOS.h"
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43 #include "partest.h"
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45 /*-----------------------------------------------------------
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46 * Simple parallel port IO routines.
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47 *-----------------------------------------------------------*/
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49 #define partstALL_BITS_OUTPUT ( ( unsigned char ) 0xff )
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50 #define partstALL_OUTPUTS_OFF ( ( unsigned char ) 0xff )
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51 #define partstMAX_OUTPUT_LED ( ( unsigned char ) 7 )
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53 static volatile unsigned char ucCurrentOutputValue = partstALL_OUTPUTS_OFF; /*lint !e956 File scope parameters okay here. */
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55 /*-----------------------------------------------------------*/
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57 void vParTestInitialise( void )
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59 ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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61 /* Set port B direction to outputs. Start with all output off. */
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62 DDRB = partstALL_BITS_OUTPUT;
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63 PORTB = ucCurrentOutputValue;
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65 /*-----------------------------------------------------------*/
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67 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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69 unsigned char ucBit = ( unsigned char ) 1;
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71 if( uxLED <= partstMAX_OUTPUT_LED )
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77 if( xValue == pdTRUE )
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79 ucBit ^= ( unsigned char ) 0xff;
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80 ucCurrentOutputValue &= ucBit;
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84 ucCurrentOutputValue |= ucBit;
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87 PORTB = ucCurrentOutputValue;
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92 /*-----------------------------------------------------------*/
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94 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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96 unsigned char ucBit;
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98 if( uxLED <= partstMAX_OUTPUT_LED )
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100 ucBit = ( ( unsigned char ) 1 ) << uxLED;
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104 if( ucCurrentOutputValue & ucBit )
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106 ucCurrentOutputValue &= ~ucBit;
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110 ucCurrentOutputValue |= ucBit;
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113 PORTB = ucCurrentOutputValue;
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