/* * Copyright © 2010 Keith Packard * * 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. */ /* * Deal with TeleDongle on a serial port */ package altosui; import java.lang.*; import java.io.*; import java.util.concurrent.*; import java.util.*; import java.text.*; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.filechooser.FileNameExtensionFilter; import javax.swing.table.*; import org.altusmetrum.AltosLib.*; import libaltosJNI.*; /* * This class reads from the serial port and places each received * line in a queue. Dealing with that queue is left up to other * threads. */ public class AltosSerial extends AltosLink implements Runnable { static java.util.List devices_opened = Collections.synchronizedList(new LinkedList()); AltosDevice device; SWIGTYPE_p_altos_file altos; Thread input_thread; String line; byte[] line_bytes; int line_count; Frame frame; public void run () { int c; byte[] line_bytes = null; int line_count = 0; try { for (;;) { c = libaltos.altos_getchar(altos, 0); if (Thread.interrupted()) break; if (c == libaltosConstants.LIBALTOS_ERROR) { add_telem (new AltosLine()); add_reply (new AltosLine()); break; } if (c == libaltosConstants.LIBALTOS_TIMEOUT) continue; if (c == '\r') continue; synchronized(this) { if (c == '\n') { if (line_count != 0) { add_bytes(line_bytes, line_count); line_count = 0; } } else { if (line_bytes == null) { line_bytes = new byte[256]; } else if (line_count == line_bytes.length) { byte[] new_line_bytes = new byte[line_count * 2]; System.arraycopy(line_bytes, 0, new_line_bytes, 0, line_count); line_bytes = new_line_bytes; } line_bytes[line_count] = (byte) c; line_count++; } } } } catch (InterruptedException e) { } } public void flush_output() { super.flush_output(); if (altos != null) { libaltos.altos_flush(altos); } } boolean abort; JDialog timeout_dialog; boolean timeout_started = false; private void stop_timeout_dialog() { if (timeout_started) { timeout_started = false; Runnable r = new Runnable() { public void run() { timeout_dialog.setVisible(false); } }; SwingUtilities.invokeLater(r); } } private void start_timeout_dialog_internal() { Object[] options = { "Cancel" }; JOptionPane pane = new JOptionPane(); pane.setMessage(String.format("Connecting to %s, %7.3f MHz", device.toShortString(), frequency)); pane.setOptions(options); pane.setInitialValue(null); timeout_dialog = pane.createDialog(frame, "Connecting..."); timeout_dialog.setVisible(true); Object o = pane.getValue(); if (o == null) return; if (options[0].equals(o)) abort = true; timeout_dialog.dispose(); timeout_dialog = null; } private boolean check_timeout() { if (!timeout_started && frame != null) { if (!SwingUtilities.isEventDispatchThread()) { timeout_started = true; Runnable r = new Runnable() { public void run() { start_timeout_dialog_internal(); } }; SwingUtilities.invokeLater(r); } } return abort; } public void flush_input() throws InterruptedException { if (remote) flush_input(500); else flush_input(100); } int in_reply; public String get_reply(int timeout) throws InterruptedException { boolean can_cancel = true; String reply = null; try { ++in_reply; if (SwingUtilities.isEventDispatchThread()) { can_cancel = false; if (remote) System.out.printf("Uh-oh, reading remote serial device from swing thread\n"); } flush_output(); if (remote && can_cancel) { timeout = 500; } abort = false; timeout_started = false; for (;;) { AltosLine line = reply_queue.poll(timeout, TimeUnit.MILLISECONDS); if (line != null) { stop_timeout_dialog(); reply = line.line; break; } if (!remote || !can_cancel || check_timeout()) { reply = null; break; } } } finally { --in_reply; } return reply; } public void close() { if (remote) { try { stop_remote(); } catch (InterruptedException ie) { } } if (in_reply != 0) System.out.printf("Uh-oh. Closing active serial device\n"); if (altos != null) { libaltos.altos_close(altos); } if (input_thread != null) { try { input_thread.interrupt(); input_thread.join(); } catch (InterruptedException e) { } input_thread = null; } if (altos != null) { libaltos.altos_free(altos); altos = null; } synchronized (devices_opened) { devices_opened.remove(device.getPath()); } if (debug) System.out.printf("Closing %s\n", device.getPath()); } private void putc(char c) { if (altos != null) libaltos.altos_putchar(altos, c); } public void print(String data) { for (int i = 0; i < data.length(); i++) putc(data.charAt(i)); } private void open() throws FileNotFoundException, AltosSerialInUseException { synchronized (devices_opened) { if (devices_opened.contains(device.getPath())) throw new AltosSerialInUseException(device); devices_opened.add(device.getPath()); } altos = device.open(); if (altos == null) { final String message = device.getErrorString(); close(); throw new FileNotFoundException(String.format("%s (%s)", device.toShortString(), message)); } if (debug) System.out.printf("Open %s\n", device.getPath()); input_thread = new Thread(this); input_thread.start(); print("~\nE 0\n"); set_monitor(false); flush_output(); } public void set_frame(Frame in_frame) { frame = in_frame; } public AltosSerial(AltosDevice in_device) throws FileNotFoundException, AltosSerialInUseException { device = in_device; frame = null; serial = device.getSerial(); name = device.toShortString(); open(); } }