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