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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; |
| } |
