OpenWrt – Rev 4

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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;
}