2 * Copyright © 2012 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 static void (*pcint_callback)(void);
22 static uint8_t pcint_mask;
26 if (PINB & pcint_mask)
31 ao_exti_setup_port(uint8_t pin, uint8_t mode, void (*callback)(void))
33 pcint_callback = callback;
34 pcint_mask = (1 << pin);
35 ao_exti_disable(PORTB, pin);