1/* 2 * (C) Copyright 2006 3 * Atmel Nordic AB <www.atmel.com> 4 * Ulf Samuelsson <ulf@atmel.com> 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License as 11 * published by the Free Software Foundation; either version 2 of 12 * the License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 22 * MA 02111-1307 USA 23 */ 24 25#include <AT91RM9200.h> 26 27#define GREEN_LED AT91C_PIO_PB0 28#define YELLOW_LED AT91C_PIO_PB1 29#define RED_LED AT91C_PIO_PB2 30 31void LED_set(unsigned int led) 32{ 33 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 34 PIOB->PIO_SODR = (led ^ 0x7) & 0x7; // All 0's => Set PIO high => OFF 35 PIOB->PIO_CODR = led & 0x7; // All 1's => Set PIO low => ON 36} 37 38void green_LED_on(void) 39{ 40 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 41// PIOB->PIO_CODR = GREEN_LED; 42 PIOB->PIO_CODR = (1 << 0); 43} 44 45void yellow_LED_on(void) 46{ 47 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 48// PIOB->PIO_CODR = YELLOW_LED; 49 PIOB->PIO_CODR = (1 << 1); 50} 51 52void red_LED_on(void) 53{ 54 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 55// PIOB->PIO_CODR = RED_LED; 56 PIOB->PIO_CODR = (1 << 2); 57} 58 59void green_LED_off(void) 60{ 61 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 62// PIOB->PIO_SODR = GREEN_LED; 63 PIOB->PIO_SODR = (1 << 0); 64} 65 66void yellow_LED_off(void) 67{ 68 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 69// PIOB->PIO_SODR = YELLOW_LED; 70 PIOB->PIO_SODR = (1 << 1); 71} 72 73void red_LED_off(void) 74{ 75 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 76// PIOB->PIO_SODR = RED_LED; 77 PIOB->PIO_SODR = (1 << 2); 78} 79 80void LED_blink(unsigned int led) 81{ 82 volatile int i,j; 83 for(i = 0; i < 5; i++) { 84 LED_set((1 << led)&0x7); 85 for(j= 0; j < 200000; j++); 86 LED_set(0); 87 for(j= 0; j < 200000; j++); 88 } 89} 90 91 92void LED_init (void) 93{ 94 AT91PS_PIO PIOB = AT91C_BASE_PIOB; 95 AT91PS_PMC PMC = AT91C_BASE_PMC; 96 PMC->PMC_PCER = (1 << AT91C_ID_PIOB); // Enable PIOB clock 97 // Disable peripherals on LEDs 98 PIOB->PIO_PER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0; 99 // Enable pins as outputs 100 PIOB->PIO_OER = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0; 101 // Turn all LEDs OFF 102 PIOB->PIO_SODR = AT91C_PIO_PB2 | AT91C_PIO_PB1 | AT91C_PIO_PB0; 103} 104