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/*
* (C) Copyright 2006
* Atmel Nordic AB <www.atmel.com>
* Ulf Samuelsson <ulf@atmel.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <AT91RM9200.h>
#define GREEN_LED AT91C_PIO_PB0
#define YELLOW_LED AT91C_PIO_PB1
#define RED_LED AT91C_PIO_PB2
void LED_set(unsigned int led)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
PIOB->PIO_SODR = (led ^ 0x7) & 0x7; // All 0's => Set PIO high => OFF
PIOB->PIO_CODR = led & 0x7; // All 1's => Set PIO low => ON
}
void green_LED_on(void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
// PIOB->PIO_CODR = GREEN_LED;
PIOB->PIO_CODR = (1 << 0);
}
void yellow_LED_on(void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
// PIOB->PIO_CODR = YELLOW_LED;
PIOB->PIO_CODR = (1 << 1);
}
void red_LED_on(void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
// PIOB->PIO_CODR = RED_LED;
PIOB->PIO_CODR = (1 << 2);
}
void green_LED_off(void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
// PIOB->PIO_SODR = GREEN_LED;
PIOB->PIO_SODR = (1 << 0);
}
void yellow_LED_off(void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
// PIOB->PIO_SODR = YELLOW_LED;
PIOB->PIO_SODR = (1 << 1);
}
void red_LED_off(void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
// PIOB->PIO_SODR = RED_LED;
PIOB->PIO_SODR = (1 << 2);
}
void LED_blink(unsigned int led)
{
volatile int i,j;
for(i = 0; i < 5; i++) {
LED_set((1 << led)&0x7);
for(j= 0; j < 200000; j++);
LED_set(0);
for(j= 0; j < 200000; j++);
}
}
void LED_init (void)
{
AT91PS_PIO PIOB = AT91C_BASE_PIOB;
AT91PS_PMC PMC = AT91C_BASE_PMC;
PMC->PMC_PCER = (1 << AT91C_ID_PIOB); // Enable PIOB clock
// Disable peripherals on LEDs
PIOB->PIO_PER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0;
// Enable pins as outputs
PIOB->PIO_OER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0;
// Turn all LEDs OFF
PIOB->PIO_SODR = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0;
}
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