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; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 volatile __xdata struct ao_data ao_data_ring[AO_DATA_RING];
23 volatile __data uint8_t ao_data_head;
24 volatile __data uint8_t ao_data_present;
28 ao_data_get(__xdata struct ao_data *packet)
31 uint8_t i = ao_data_ring_prev(ao_sample_data);
33 uint8_t i = ao_data_ring_prev(ao_data_head);
35 memcpy(packet, (void *) &ao_data_ring[i], sizeof (struct ao_data));