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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30 /*-----------------------------------------------------------
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31 * Simple IO routines to control the LEDs.
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32 *-----------------------------------------------------------*/
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34 /* Scheduler includes. */
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35 #include "FreeRTOS.h"
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38 /* Demo includes. */
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39 #include "partest.h"
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41 /* Xilinx includes. */
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45 #define partstNUM_LEDS 8
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47 /*-----------------------------------------------------------*/
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49 /* The GPIO instance to which the LEDs are connected. */
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50 static XGpio xOutputGPIOInstance;
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52 /* Maintains the current LED output state. */
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53 static volatile UBaseType_t uxGPIOState = 0U;
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55 /* Constant required by the Xilinx peripheral driver API functions that are
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56 relevant to the particular hardware set up. */
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57 static const unsigned long ulGPIOOutputChannel = 1UL;
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59 /*-----------------------------------------------------------*/
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61 void vParTestInitialise( void )
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63 portBASE_TYPE xStatus;
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64 const unsigned char ucSetToOutput = 0U;
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66 /* Initialize the GPIO for the LEDs. */
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67 xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_AXI_GPIO_0_DEVICE_ID );
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68 if( xStatus == XST_SUCCESS )
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70 /* All bits on this channel are going to be outputs (LEDs). */
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71 XGpio_SetDataDirection( &xOutputGPIOInstance, ulGPIOOutputChannel, ucSetToOutput );
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73 /* Start with all LEDs off. */
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75 XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
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78 configASSERT( ( xStatus == XST_SUCCESS ) );
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80 /*-----------------------------------------------------------*/
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82 void vParTestSetLED( UBaseType_t uxLED, BaseType_t xValue )
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84 if( uxLED < partstNUM_LEDS )
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86 taskENTER_CRITICAL();
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88 if( xValue != pdFALSE )
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90 uxGPIOState |= ( 1UL << uxLED );
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94 uxGPIOState &= ~( 1UL << uxLED );
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97 XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
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99 taskEXIT_CRITICAL();
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102 /*-----------------------------------------------------------*/
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104 void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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106 if( uxLED < partstNUM_LEDS )
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108 taskENTER_CRITICAL();
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110 uxGPIOState ^= ( 1UL << uxLED );
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111 XGpio_DiscreteWrite( &xOutputGPIOInstance, ulGPIOOutputChannel, ( uint8_t ) uxGPIOState );
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113 taskEXIT_CRITICAL();
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