blob: 8ae1c4a09542baad4e5fd7a77938d62ca95445bd (
plain) (
blame)
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
|
/*
* Copyright © 2012 Keith Packard <keithp@keithp.com>
*
* 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 <ao.h>
#include <ao_exti.h>
static void (*pcint_callback)(void);
static uint8_t pcint_mask;
ISR(PCINT0_vect)
{
if (PINB & pcint_mask)
(*pcint_callback)();
}
void
ao_exti_setup_port(uint8_t pin, uint8_t mode, void (*callback)(void))
{
pcint_callback = callback;
pcint_mask = (1 << pin);
ao_exti_disable(PORTB, pin);
GIMSK |= (1 << PCIE);
}
|
