2 * FreeRTOS Kernel V10.1.0
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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.
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 * http://www.FreeRTOS.org
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23 * http://aws.amazon.com/freertos
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25 * 1 tab == 4 spaces!
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31 + Use scheduler suspends in place of critical sections.
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35 + Replaced the inb() and outb() functions with direct memory
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36 access. This allows the port to be built with the 20050414 build of
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40 #include "FreeRTOS.h"
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42 #include "partest.h"
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44 /*-----------------------------------------------------------
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45 * Simple parallel port IO routines.
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46 *-----------------------------------------------------------*/
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48 #define partstALL_BITS_OUTPUT ( ( unsigned char ) 0xff )
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49 #define partstALL_OUTPUTS_OFF ( ( unsigned char ) 0xff )
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50 #define partstMAX_OUTPUT_LED ( ( unsigned char ) 7 )
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52 static volatile unsigned char ucCurrentOutputValue = partstALL_OUTPUTS_OFF; /*lint !e956 File scope parameters okay here. */
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54 /*-----------------------------------------------------------*/
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56 void vParTestInitialise( void )
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58 ucCurrentOutputValue = partstALL_OUTPUTS_OFF;
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60 /* Set port B direction to outputs. Start with all output off. */
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61 DDRB = partstALL_BITS_OUTPUT;
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62 PORTB = ucCurrentOutputValue;
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64 /*-----------------------------------------------------------*/
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66 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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68 unsigned char ucBit = ( unsigned char ) 1;
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70 if( uxLED <= partstMAX_OUTPUT_LED )
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76 if( xValue == pdTRUE )
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78 ucBit ^= ( unsigned char ) 0xff;
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79 ucCurrentOutputValue &= ucBit;
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83 ucCurrentOutputValue |= ucBit;
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86 PORTB = ucCurrentOutputValue;
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91 /*-----------------------------------------------------------*/
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93 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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95 unsigned char ucBit;
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97 if( uxLED <= partstMAX_OUTPUT_LED )
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99 ucBit = ( ( unsigned char ) 1 ) << uxLED;
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103 if( ucCurrentOutputValue & ucBit )
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105 ucCurrentOutputValue &= ~ucBit;
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109 ucCurrentOutputValue |= ucBit;
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112 PORTB = ucCurrentOutputValue;
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