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/*
* Copyright © 2016 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.
*/
package org.altusmetrum.altoslib_13;
import java.text.*;
import java.io.*;
import java.util.concurrent.*;
public class AltosIdleReader extends AltosFlightReader {
AltosLink link;
boolean remote;
AltosCalData cal_data = null;
AltosState state = null;
AltosIdleFetch fetch;
long next_millis;
static final long report_interval = 5 * 1000;
static final long minimum_delay = 1 * 1000;
private void start_link() throws InterruptedException, TimeoutException {
if (remote) {
link.start_remote();
} else
link.flush_input();
}
private boolean stop_link() throws InterruptedException, TimeoutException {
if (remote)
link.stop_remote();
return link.reply_abort;
}
public AltosCalData cal_data() {
if (cal_data == null) {
try {
cal_data = new AltosCalData(link.config_data());
} catch (InterruptedException ie) {
} catch (TimeoutException te) {
}
if (cal_data == null)
cal_data = new AltosCalData();
}
return cal_data;
}
public AltosState read() throws InterruptedException, ParseException, AltosCRCException, IOException {
boolean worked = false;
boolean aborted = false;
long delay = next_millis - System.currentTimeMillis();
if (delay > 0)
Thread.sleep(delay);
next_millis = System.currentTimeMillis() + report_interval;
try {
try {
start_link();
if (state == null)
state = new AltosState(cal_data());
fetch.provide_data(state);
if (!link.has_error && !link.reply_abort)
worked = true;
} catch (TimeoutException te) {
} catch (AltosUnknownProduct ue) {
worked = true;
}
} finally {
try {
aborted = stop_link();
} catch (TimeoutException te) {
aborted = true;
}
if (worked) {
if (remote) {
try {
state.set_rssi(link.rssi(), 0);
} catch (TimeoutException te) {
state.set_rssi(0, 0);
}
}
}
}
long finish = System.currentTimeMillis();
if (next_millis - finish < minimum_delay)
next_millis = finish + minimum_delay;
return state;
}
public void close(boolean interrupted) {
try {
link.close();
} catch (InterruptedException ie) {
}
}
public void set_frequency(double frequency) throws InterruptedException, TimeoutException {
link.set_radio_frequency(frequency);
}
public void save_frequency() {
AltosPreferences.set_frequency(link.serial, link.frequency);
}
public void set_callsign(String callsign) throws InterruptedException, TimeoutException {
link.set_callsign(callsign);
}
public AltosIdleReader (AltosLink link, boolean remote)
throws IOException, InterruptedException, TimeoutException {
this.link = link;
this.remote = remote;
this.next_millis = System.currentTimeMillis();
fetch = new AltosIdleFetch(link);
}
}
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