diff options
Diffstat (limited to 'src/kernel/ao_data.c')
| -rw-r--r-- | src/kernel/ao_data.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/kernel/ao_data.c b/src/kernel/ao_data.c new file mode 100644 index 00000000..6a3d02a1 --- /dev/null +++ b/src/kernel/ao_data.c @@ -0,0 +1,36 @@ +/* + * 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; version 2 of the License. + * + * 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_data.h> + +volatile __xdata struct ao_data ao_data_ring[AO_DATA_RING]; +volatile __data uint8_t ao_data_head; +volatile __data uint8_t ao_data_present; + +#ifndef ao_data_count +void +ao_data_get(__xdata struct ao_data *packet) +{ +#if HAS_FLIGHT + uint8_t i = ao_data_ring_prev(ao_sample_data); +#else + uint8_t i = ao_data_ring_prev(ao_data_head); +#endif + memcpy(packet, (void *) &ao_data_ring[i], sizeof (struct ao_data)); +} +#endif |