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 /*-----------------------------------------------------------
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30 * Simple parallel port IO routines.
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31 *-----------------------------------------------------------*/
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33 /* Kernel includes. */
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34 #include "FreeRTOS.h"
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37 /* Library includes. */
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38 #include "mss_gpio.h"
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40 #define partstMAX_LEDS 8
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42 static volatile unsigned long ulGPIOState = 0UL;
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44 /*-----------------------------------------------------------*/
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46 void vParTestInitialise( void )
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50 /* Initialise the GPIO */
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53 /* Set up GPIO for the LEDs. */
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54 for( x = 0; x < partstMAX_LEDS; x++ )
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56 MSS_GPIO_config( ( mss_gpio_id_t ) x , MSS_GPIO_OUTPUT_MODE );
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59 /* All LEDs start off. */
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60 ulGPIOState = 0xffffffffUL;
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61 MSS_GPIO_set_outputs( ulGPIOState );
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63 /*-----------------------------------------------------------*/
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65 void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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67 if( uxLED < partstMAX_LEDS )
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69 /* A critical section is used as the LEDs are also accessed from an
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71 taskENTER_CRITICAL();
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73 if( xValue == pdTRUE )
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75 ulGPIOState &= ~( 1UL << uxLED );
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79 ulGPIOState |= ( 1UL << uxLED );
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82 MSS_GPIO_set_outputs( ulGPIOState );
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84 taskEXIT_CRITICAL();
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87 /*-----------------------------------------------------------*/
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89 void vParTestSetLEDFromISR( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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91 unsigned portBASE_TYPE uxInterruptFlags;
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93 uxInterruptFlags = portSET_INTERRUPT_MASK_FROM_ISR();
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95 if( uxLED < partstMAX_LEDS )
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97 if( xValue == pdTRUE )
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99 ulGPIOState &= ~( 1UL << uxLED );
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103 ulGPIOState |= ( 1UL << uxLED );
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106 MSS_GPIO_set_outputs( ulGPIOState );
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109 portCLEAR_INTERRUPT_MASK_FROM_ISR( uxInterruptFlags );
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111 /*-----------------------------------------------------------*/
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113 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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115 if( uxLED < partstMAX_LEDS )
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117 /* A critical section is used as the LEDs are also accessed from an
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119 taskENTER_CRITICAL();
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121 if( ( ulGPIOState & ( 1UL << uxLED ) ) != 0UL )
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123 ulGPIOState &= ~( 1UL << uxLED );
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127 ulGPIOState |= ( 1UL << uxLED );
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130 MSS_GPIO_set_outputs( ulGPIOState );
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132 taskEXIT_CRITICAL();
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135 /*-----------------------------------------------------------*/
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137 long lParTestGetLEDState( unsigned long ulLED )
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139 long lReturn = pdFALSE;
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141 if( ulLED < partstMAX_LEDS )
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143 taskENTER_CRITICAL();
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145 if( ( ulGPIOState & ( 1UL << ulLED ) ) == 0UL )
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150 taskEXIT_CRITICAL();
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155 /*-----------------------------------------------------------*/
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