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136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/*
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FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
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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 exception to the GPL is included to allow you to distribute a
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combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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Alternative commercial license and support terms are also available upon
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request. See the licensing section of http://www.FreeRTOS.org for full
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license details.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along
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with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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***************************************************************************
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* *
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* Looking for a quick start? Then check out the FreeRTOS eBook! *
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* See http://www.FreeRTOS.org/Documentation for details *
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* *
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***************************************************************************
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1 tab == 4 spaces!
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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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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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "portable.h"
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/* Demo app includes. */
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#include "partest.h"
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/* Hardware specific definitions. */
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#include "AT91R40008.h"
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#include "pio.h"
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#include "aic.h"
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#define partstNUM_LEDS ( 8 )
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#define partstALL_OUTPUTS_OFF ( ( unsigned portLONG ) ~(0xFFFFFFFF << partstNUM_LEDS) )
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static unsigned portLONG ulLEDReg;
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/*-----------------------------------------------------------
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* Simple parallel port IO routines.
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*-----------------------------------------------------------*/
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static void SetLeds (unsigned int leds)
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{
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unsigned portLONG ulPIOSetReg, ulPIOClearReg;
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/* LEDs are grouped in different port bits: P3-P6 and P16-P19.
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A port bit set to '0' turns an LED on, '1' turns it off. */
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ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 );
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ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078;
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AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg;
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AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg;
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}
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/*-----------------------------------------------------------*/
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void vParTestInitialise( void )
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{
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/* This is performed from main() as the io bits are shared with other setup
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functions. Ensure the outputs are off to start. */
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ulLEDReg = partstALL_OUTPUTS_OFF;
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/* Enable clock to PIO... */
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AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO;
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/* Enable all 8 LEDs and the four switches to be controlled by PIO... */
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AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12;
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/* Configure all LED PIO lines for output... */
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AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19;
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/* Configure all switch PIO lines for input... */
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AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12;
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/* Set initial state of LEDs. */
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SetLeds( ulLEDReg );
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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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/* Switch an LED on or off as requested. */
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if (uxLED < partstNUM_LEDS)
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{
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if( xValue )
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{
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ulLEDReg &= ~(1 << uxLED);
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}
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else
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{
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ulLEDReg |= (1 << uxLED);
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}
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SetLeds( ulLEDReg );
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}
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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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/* Toggle the state of the requested LED. */
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if (uxLED < partstNUM_LEDS)
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{
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ulLEDReg ^= ( 1 << uxLED );
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SetLeds( ulLEDReg );
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}
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}
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