/* | |
FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry. | |
This file is part of the FreeRTOS.org distribution. | |
FreeRTOS.org is free software; you can redistribute it and/or modify | |
it under the terms of the GNU General Public License as published by | |
the Free Software Foundation; either version 2 of the License, or | |
(at your option) any later version. | |
FreeRTOS.org 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. See the | |
GNU General Public License for more details. | |
You should have received a copy of the GNU General Public License | |
along with FreeRTOS.org; if not, write to the Free Software | |
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
A special exception to the GPL can be applied should you wish to distribute | |
a combined work that includes FreeRTOS.org, without being obliged to provide | |
the source code for any proprietary components. See the licensing section | |
of http://www.FreeRTOS.org for full details of how and when the exception | |
can be applied. | |
*************************************************************************** | |
*************************************************************************** | |
* * | |
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation * | |
* * | |
* This is a concise, step by step, 'hands on' guide that describes both * | |
* general multitasking concepts and FreeRTOS specifics. It presents and * | |
* explains numerous examples that are written using the FreeRTOS API. * | |
* Full source code for all the examples is provided in an accompanying * | |
* .zip file. * | |
* * | |
*************************************************************************** | |
*************************************************************************** | |
Please ensure to read the configuration and relevant port sections of the | |
online documentation. | |
http://www.FreeRTOS.org - Documentation, latest information, license and | |
contact details. | |
http://www.SafeRTOS.com - A version that is certified for use in safety | |
critical systems. | |
http://www.OpenRTOS.com - Commercial support, development, porting, | |
licensing and training services. | |
*/ | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
#include "portable.h" | |
/* Demo app includes. */ | |
#include "partest.h" | |
/* Hardware specific definitions. */ | |
#include "AT91R40008.h" | |
#include "pio.h" | |
#include "aic.h" | |
#define partstNUM_LEDS ( 8 ) | |
#define partstALL_OUTPUTS_OFF ( ( unsigned portLONG ) ~(0xFFFFFFFF << partstNUM_LEDS) ) | |
static unsigned portLONG ulLEDReg; | |
/*----------------------------------------------------------- | |
* Simple parallel port IO routines. | |
*-----------------------------------------------------------*/ | |
static void SetLeds (unsigned int leds) | |
{ | |
unsigned portLONG ulPIOSetReg, ulPIOClearReg; | |
/* LEDs are grouped in different port bits: P3-P6 and P16-P19. | |
A port bit set to '0' turns an LED on, '1' turns it off. */ | |
ulPIOSetReg = ( (leds & 0xF) << 16 ) | ( (leds & 0xF0) >> 1 ); | |
ulPIOClearReg = (~ulPIOSetReg) & 0x000F0078; | |
AT91C_BASE_PIO->PIO_SODR = ulPIOSetReg; | |
AT91C_BASE_PIO->PIO_CODR = ulPIOClearReg; | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestInitialise( void ) | |
{ | |
/* This is performed from main() as the io bits are shared with other setup | |
functions. Ensure the outputs are off to start. */ | |
ulLEDReg = partstALL_OUTPUTS_OFF; | |
/* Enable clock to PIO... */ | |
AT91C_BASE_PS->PS_PCER = AT91C_PS_PIO; | |
/* Enable all 8 LEDs and the four switches to be controlled by PIO... */ | |
AT91C_BASE_PIO->PIO_PER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19 | P1 | P2 | P9 | P12; | |
/* Configure all LED PIO lines for output... */ | |
AT91C_BASE_PIO->PIO_OER = P3 | P4 | P5 | P6 | P16 | P17 | P18 | P19; | |
/* Configure all switch PIO lines for input... */ | |
AT91C_BASE_PIO->PIO_ODR = P1 | P2 | P9 | P12; | |
/* Set initial state of LEDs. */ | |
SetLeds( ulLEDReg ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestSetLED( unsigned portBASE_TYPE uxLED, signed portBASE_TYPE xValue ) | |
{ | |
/* Switch an LED on or off as requested. */ | |
if (uxLED < partstNUM_LEDS) | |
{ | |
if( xValue ) | |
{ | |
ulLEDReg &= ~(1 << uxLED); | |
} | |
else | |
{ | |
ulLEDReg |= (1 << uxLED); | |
} | |
SetLeds( ulLEDReg ); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vParTestToggleLED( unsigned portBASE_TYPE uxLED ) | |
{ | |
/* Toggle the state of the requested LED. */ | |
if (uxLED < partstNUM_LEDS) | |
{ | |
ulLEDReg ^= ( 1 << uxLED ); | |
SetLeds( ulLEDReg ); | |
} | |
} | |