Initial Commit - Copy from Altus Metrum AltOS

altoslib/AltosTelemetryReader.java

@@ -0,0 +1,184 @@
+/*
+ * Copyright © 2010 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_14;
+
+import java.text.*;
+import java.io.*;
+import java.util.concurrent.*;
+
+public class AltosTelemetryReader extends AltosFlightReader {
+	AltosLink		link;
+	AltosLog		log;
+	double			frequency;
+	int			telemetry;
+	int			telemetry_rate;
+	private AltosState	state = null;
+	private AltosCalData	cal_data = null;
+
+	LinkedBlockingQueue<AltosLine> telem;
+
+	public AltosState read() throws InterruptedException, ParseException, AltosCRCException, IOException {
+		AltosLine l;
+		do {
+			l = telem.take();
+			if (l.line == null)
+				throw new IOException("IO error");
+		} while (!link.get_monitor());
+		AltosTelemetry	telem = AltosTelemetry.parse(l.line);
+		if (state == null)
+			state = new AltosState(cal_data());
+		telem.provide_data(state);
+		return state;
+	}
+
+	public AltosCalData cal_data() {
+		if (cal_data == null)
+			cal_data = new AltosCalData();
+		return cal_data;
+	}
+
+	public void flush() {
+		telem.clear();
+	}
+
+	public void reset() {
+		flush();
+		state = null;
+		cal_data = null;
+	}
+
+	public void close(boolean interrupted) {
+
+		link.remove_monitor(telem);
+		log.close();
+		try {
+			link.close();
+		} catch (InterruptedException ie) {
+		}
+	}
+
+	public void set_frequency(double in_frequency) throws InterruptedException, TimeoutException {
+		frequency = in_frequency;
+		link.set_radio_frequency(frequency);
+	}
+
+	public boolean supports_telemetry(int telemetry) {
+
+		try {
+			/* Version 1.0 or later firmware supports all telemetry formats */
+			if (link.config_data().compare_version("1.0") >= 0)
+				return true;
+
+			/* Version 0.9 firmware only supports 0.9 telemetry */
+			if (link.config_data().compare_version("0.9") >= 0) {
+				if (telemetry == AltosLib.ao_telemetry_0_9)
+					return true;
+				else
+					return false;
+			}
+
+			/* Version 0.8 firmware only supports 0.8 telemetry */
+			if (telemetry == AltosLib.ao_telemetry_0_8)
+				return true;
+			else
+				return false;
+		} catch (InterruptedException ie) {
+			return false;
+		} catch (TimeoutException te) {
+			return true;
+		}
+	}
+
+	public boolean supports_telemetry_rate(int telemetry_rate) {
+		try {
+			/* Version 1.4.1.1 supports all rates, older versions don't */
+			if (link.config_data().compare_version("1.4.1.1") >= 0)
+				return true;
+
+			if (telemetry_rate == AltosLib.ao_telemetry_rate_38400)
+				return true;
+			else
+				return false;
+		} catch (InterruptedException ie) {
+			return false;
+		} catch (TimeoutException te) {
+			return true;
+		}
+	}
+
+	public void save_frequency() {
+		AltosPreferences.set_frequency(link.serial, frequency);
+	}
+
+	public void set_telemetry(int in_telemetry) {
+		telemetry = in_telemetry;
+		link.set_telemetry(telemetry);
+	}
+
+	public void save_telemetry() {
+		AltosPreferences.set_telemetry(link.serial, telemetry);
+	}
+
+	public void set_telemetry_rate(int in_telemetry_rate) {
+		telemetry_rate = in_telemetry_rate;
+		link.set_telemetry_rate(telemetry_rate);
+	}
+
+	public void save_telemetry_rate() {
+		AltosPreferences.set_telemetry_rate(link.serial, telemetry_rate);
+	}
+
+	public void set_monitor(boolean monitor) {
+		link.set_monitor(monitor);
+	}
+
+	public File backing_file() {
+		return log.file();
+	}
+
+	public boolean has_monitor_battery() {
+		return link.has_monitor_battery();
+	}
+
+	public double monitor_battery() throws InterruptedException {
+		return link.monitor_battery();
+	}
+
+	public AltosTelemetryReader (AltosLink in_link)
+		throws IOException, InterruptedException, TimeoutException {
+		link = in_link;
+		boolean success = false;
+		try {
+			log = new AltosLog(link);
+			name = link.name;
+			telem = new LinkedBlockingQueue<AltosLine>();
+			frequency = AltosPreferences.frequency(link.serial);
+			set_frequency(frequency);
+			telemetry = AltosPreferences.telemetry(link.serial);
+			set_telemetry(telemetry);
+			telemetry_rate = AltosPreferences.telemetry_rate(link.serial);
+			set_telemetry_rate(telemetry_rate);
+			link.add_monitor(telem);
+			success = true;
+		} finally {
+			if (!success)
+				close(true);
+		}
+	}
+}