103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
/*
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* (C) Copyright 2006
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* Atmel Nordic AB <www.atmel.com>
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* Ulf Samuelsson <ulf@atmel.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <AT91RM9200.h>
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#define GREEN_LED AT91C_PIO_PB0
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#define YELLOW_LED AT91C_PIO_PB1
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#define RED_LED AT91C_PIO_PB2
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void LED_set(unsigned int led)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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PIOB->PIO_SODR = (led ^ 0x7) & 0x7; // All 0's => Set PIO high => OFF
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PIOB->PIO_CODR = led & 0x7; // All 1's => Set PIO low => ON
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}
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void green_LED_on(void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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// PIOB->PIO_CODR = GREEN_LED;
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PIOB->PIO_CODR = (1 << 0);
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}
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void yellow_LED_on(void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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// PIOB->PIO_CODR = YELLOW_LED;
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PIOB->PIO_CODR = (1 << 1);
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}
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void red_LED_on(void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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// PIOB->PIO_CODR = RED_LED;
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PIOB->PIO_CODR = (1 << 2);
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}
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void green_LED_off(void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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// PIOB->PIO_SODR = GREEN_LED;
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PIOB->PIO_SODR = (1 << 0);
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}
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void yellow_LED_off(void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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// PIOB->PIO_SODR = YELLOW_LED;
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PIOB->PIO_SODR = (1 << 1);
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}
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void red_LED_off(void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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// PIOB->PIO_SODR = RED_LED;
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PIOB->PIO_SODR = (1 << 2);
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}
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void LED_blink(unsigned int led)
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{
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volatile int i,j;
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for(i = 0; i < 5; i++) {
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LED_set((1 << led)&0x7);
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for(j= 0; j < 200000; j++);
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LED_set(0);
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for(j= 0; j < 200000; j++);
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}
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}
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void LED_init (void)
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{
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AT91PS_PIO PIOB = AT91C_BASE_PIOB;
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AT91PS_PMC PMC = AT91C_BASE_PMC;
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PMC->PMC_PCER = (1 << AT91C_ID_PIOB); // Enable PIOB clock
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// Disable peripherals on LEDs
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PIOB->PIO_PER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0;
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// Enable pins as outputs
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PIOB->PIO_OER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0;
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// Turn all LEDs OFF
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PIOB->PIO_SODR = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0;
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}
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