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/*
* 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_pad.h>
#include <ao_radio_cmac.h>
#include <ao_lco_func.h>
static __xdata struct ao_pad_command command;
static __xdata uint8_t ao_lco_mutex;
int8_t
ao_lco_query(uint16_t box, struct ao_pad_query *query, uint16_t *tick_offset)
{
int8_t r;
uint16_t sent_time;
uint16_t timeout = AO_MS_TO_TICKS(10);
#if HAS_RADIO_RATE
switch (ao_config.radio_rate) {
case AO_RADIO_RATE_38400:
default:
break;
case AO_RADIO_RATE_9600:
timeout = AO_MS_TO_TICKS(20);
break;
case AO_RADIO_RATE_2400:
timeout = AO_MS_TO_TICKS(80);
break;
}
#endif
ao_mutex_get(&ao_lco_mutex);
command.tick = ao_time();
command.box = box;
command.cmd = AO_PAD_QUERY;
command.channels = 0;
ao_radio_cmac_send(&command, sizeof (command));
sent_time = ao_time();
r = ao_radio_cmac_recv(query, sizeof (*query), timeout);
if (r == AO_RADIO_CMAC_OK)
*tick_offset = sent_time - query->tick;
ao_mutex_put(&ao_lco_mutex);
return r;
}
void
ao_lco_arm(uint16_t box, uint8_t channels, uint16_t tick_offset)
{
ao_mutex_get(&ao_lco_mutex);
command.tick = ao_time() - tick_offset;
command.box = box;
command.cmd = AO_PAD_ARM;
command.channels = channels;
ao_radio_cmac_send(&command, sizeof (command));
ao_mutex_put(&ao_lco_mutex);
}
void
ao_lco_ignite(uint8_t cmd)
{
ao_mutex_get(&ao_lco_mutex);
command.tick = 0;
command.box = 0;
command.cmd = cmd;
command.channels = 0;
ao_radio_cmac_send(&command, sizeof (command));
ao_mutex_put(&ao_lco_mutex);
}
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