Add LED output to the new MicroBlaze blinky demo - still a work in progress.
Richard Barry
14 years ago
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/*
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FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* FreeRTOS tutorial books are available in pdf and paperback. *
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* Complete, revised, and edited pdf reference manuals are also *
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* available. *
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* *
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* Purchasing FreeRTOS documentation will not only help you, by *
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* ensuring you get running as quickly as possible and with an *
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* in-depth knowledge of how to use FreeRTOS, it will also help *
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* the FreeRTOS project to continue with its mission of providing *
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* professional grade, cross platform, de facto standard solutions *
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* for microcontrollers - completely free of charge! *
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* *
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* >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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* *
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* Thank you for using FreeRTOS, and thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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>>>NOTE<<< The modification to the GPL is included to allow you to
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distribute a combined work that includes FreeRTOS without being obliged to
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provide the source code for proprietary components outside of the FreeRTOS
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kernel. FreeRTOS is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*-----------------------------------------------------------*/
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/* Kernel includes. */
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#include "FreeRTOS.h"
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/* Demo application includes. */
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#include "partest.h"
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/* Library includes. */
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#include "xgpio.h"
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/*-----------------------------------------------------------*/
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static XGpio xOutputGPIOInstance;
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static const unsigned portBASE_TYPE uxGPIOOutputChannel = 1UL;
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static ucCurrentLEDState = 0U;
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/*
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* Setup the IO for the LED outputs.
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*/
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void vParTestInitialise( void )
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{
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portBASE_TYPE xStatus;
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const unsigned char ucSetToOutput = 0U;
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/* Initialize the GPIO. */
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xStatus = XGpio_Initialize( &xOutputGPIOInstance, XPAR_LEDS_4BITS_DEVICE_ID );
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if( xStatus == XST_SUCCESS )
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{
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/* All LEDs on this channel are going to be outputs. */
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XGpio_SetDataDirection( &xOutputGPIOInstance, uxGPIOOutputChannel, ucSetToOutput );
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/* Start with all LEDs off. */
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ucCurrentLEDState = 0U;
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XGpio_DiscreteWrite( &xOutputGPIOInstance, uxGPIOOutputChannel, ucCurrentLEDState );
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}
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configASSERT( ( xStatus == XST_SUCCESS ) );
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}
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/*-----------------------------------------------------------*/
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void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue )
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{
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#if 0
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unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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portENTER_CRITICAL();
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{
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/* Which IO section does the LED being set/cleared belong to? The
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4 bit or 5 bit outputs? */
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if( uxLED <= partstMAX_4BIT_LED )
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{
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uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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puxCurrentValue = &uxCurrentOutput4Bit;
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}
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else
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{
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uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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puxCurrentValue = &uxCurrentOutput5Bit;
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uxLED -= partstMAX_4BIT_LED;
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}
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/* Setup the bit mask accordingly. */
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uxLED = 0x01 << uxLED;
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/* Maintain the current output value. */
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if( xValue )
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{
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*puxCurrentValue |= uxLED;
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}
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else
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{
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*puxCurrentValue &= ~uxLED;
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}
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/* Write the value to the port. */
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XGpio_mSetDataReg( uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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}
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portEXIT_CRITICAL();
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#endif
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}
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/*-----------------------------------------------------------*/
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void vParTestToggleLED( unsigned portBASE_TYPE uxLED )
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{
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#if 0
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unsigned portBASE_TYPE uxBaseAddress, *puxCurrentValue;
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portENTER_CRITICAL();
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{
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/* Which IO section does the LED being toggled belong to? The
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4 bit or 5 bit outputs? */
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if( uxLED <= partstMAX_4BIT_LED )
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{
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uxBaseAddress = XPAR_LEDS_4BIT_BASEADDR;
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puxCurrentValue = &uxCurrentOutput4Bit;
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}
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else
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{
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uxBaseAddress = XPAR_LEDS_POSITIONS_BASEADDR;
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puxCurrentValue = &uxCurrentOutput5Bit;
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uxLED -= partstMAX_4BIT_LED;
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}
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/* Setup the bit mask accordingly. */
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uxLED = 0x01 << uxLED;
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/* Maintain the current output value. */
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if( *puxCurrentValue & uxLED )
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{
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*puxCurrentValue &= ~uxLED;
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}
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else
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{
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*puxCurrentValue |= uxLED;
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}
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/* Write the value to the port. */
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XGpio_mSetDataReg(uxBaseAddress, partstCHANNEL_1, *puxCurrentValue );
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}
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portEXIT_CRITICAL();
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#endif
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}
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