1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* (C) Copyright 2006
* Atmel Nordic AB <www.atmel.com>
* Ulf Samuelsson <ulf@atmel.com>
*
* (C) Copyright 2010
* Andreas Bießmann <andreas.devel@gmail.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 <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_pio.h>
/* bit mask in PIO port B */
#define GREEN_LED (1<<0)
#define YELLOW_LED (1<<1)
#define RED_LED (1<<2)
void green_led_on(void)
{
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
writel(GREEN_LED, &pio->piob.codr);
}
void yellow_led_on(void)
{
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
writel(YELLOW_LED, &pio->piob.codr);
}
void red_led_on(void)
{
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
writel(RED_LED, &pio->piob.codr);
}
void green_led_off(void)
{
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
writel(GREEN_LED, &pio->piob.sodr);
}
void yellow_led_off(void)
{
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
writel(YELLOW_LED, &pio->piob.sodr);
}
void red_led_off(void)
{
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
writel(RED_LED, &pio->piob.sodr);
}
void coloured_LED_init (void)
{
at91_pmc_t *pmc = (at91_pmc_t *)ATMEL_BASE_PMC;
at91_pio_t *pio = (at91_pio_t *)ATMEL_BASE_PIO;
/* Enable PIOB clock */
writel(1 << ATMEL_ID_PIOB, &pmc->pcer);
/* Disable peripherals on LEDs */
writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.per);
/* Enable pins as outputs */
writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.oer);
/* Turn all LEDs OFF */
writel(GREEN_LED | YELLOW_LED | RED_LED, &pio->piob.sodr);
}
|
