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/*
FreeRTOS V8.1.0 - Copyright (C) 2014 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
This file is part of the FreeRTOS distribution.
FreeRTOS is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License (version 2) as published by the
Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
>>! NOTE: The modification to the GPL is included to allow you to !<<
>>! distribute a combined work that includes FreeRTOS without being !<<
>>! obliged to provide the source code for proprietary components !<<
>>! outside of the FreeRTOS kernel. !<<
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/*-----------------------------------------------------------
* Simple digital IO routines.
*-----------------------------------------------------------*/
/* Kernel includes. */
#include "FreeRTOS.h"
/* Demo application includes. */
#include "partest.h"
/* Library includes. */
#include "xgpio.h"
/* The hardware design that accompanies this demo project has four LED
outputs. */
#define partstMAX_LED 4
/*-----------------------------------------------------------*/
/* A hardware specific constant required to use the Xilinx driver library. */
static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;
/* The current state of the output port. */
static unsigned char ucGPIOState = 0U;
/* Structure that hold the state of the ouptut peripheral used by this demo.
This is used by the Xilinx peripheral driver API functions. */
static XGpio xOutputGPIOInstance;
/*
* Setup the IO for the LED outputs.
*/
void vParTestInitialise( void )
{
portBASE_TYPE xStatus;
const unsigned char ucSetToOutput = 0U;
/* Initialise the GPIO for the LEDs. */
xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );
if( xStatus == XST_SUCCESS )
{
/* All bits on this channel are going to be outputs (LEDs). */
XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );
/* Start with all LEDs off. */
ucGPIOState = 0U;
XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
}
configASSERT( xStatus == XST_SUCCESS );
}
/*-----------------------------------------------------------*/
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
{
unsigned char ucLED = 1U;
/* Only attempt to set the LED if it is in range. */
if( uxLED < partstMAX_LED )
{
ucLED <<= ( unsigned char ) uxLED;
portENTER_CRITICAL();
{
if( xValue == pdFALSE )
{
ucGPIOState &= ~ucLED;
}
else
{
ucGPIOState |= ucLED;
}
XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
}
portEXIT_CRITICAL();
}
}
/*-----------------------------------------------------------*/
void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
{
unsigned char ucLED = 1U;
/* Only attempt to toggle the LED if it is in range. */
if( uxLED < partstMAX_LED )
{
ucLED <<= ( unsigned char ) uxLED;
portENTER_CRITICAL();
{
if( ( ucGPIOState & ucLED ) != 0 )
{
ucGPIOState &= ~ucLED;
}
else
{
ucGPIOState |= ucLED;
}
XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucGPIOState );
}
portEXIT_CRITICAL();
}
}
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