/* | |
FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* If you are: * | |
* * | |
* + New to FreeRTOS, * | |
* + Wanting to learn FreeRTOS or multitasking in general quickly * | |
* + Looking for basic training, * | |
* + Wanting to improve your FreeRTOS skills and productivity * | |
* * | |
* then take a look at the FreeRTOS books - available as PDF or paperback * | |
* * | |
* "Using the FreeRTOS Real Time Kernel - a Practical Guide" * | |
* http://www.FreeRTOS.org/Documentation * | |
* * | |
* A pdf reference manual is also available. Both are usually delivered * | |
* to your inbox within 20 minutes to two hours when purchased between 8am * | |
* and 8pm GMT (although please allow up to 24 hours in case of * | |
* exceptional circumstances). Thank you for your support! * | |
* * | |
*************************************************************************** | |
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 exception 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. See the GNU General Public License for | |
more details. You should have received a copy of the GNU General Public | |
License and the FreeRTOS license exception along with FreeRTOS; if not it | |
can be viewed here: http://www.freertos.org/a00114.html and also obtained | |
by writing to Richard Barry, contact details for whom are available on the | |
FreeRTOS WEB site. | |
1 tab == 4 spaces! | |
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 long ) ~(0xFFFFFFFF << partstNUM_LEDS) ) | |
static unsigned long ulLEDReg; | |
/*----------------------------------------------------------- | |
* Simple parallel port IO routines. | |
*-----------------------------------------------------------*/ | |
static void SetLeds (unsigned int leds) | |
{ | |
unsigned long 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 ); | |
} | |
} | |