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-rw-r--r--altoslib/AltosEeprom.java317
1 files changed, 238 insertions, 79 deletions
diff --git a/altoslib/AltosEeprom.java b/altoslib/AltosEeprom.java
index 6ed14d3a..ad7bf881 100644
--- a/altoslib/AltosEeprom.java
+++ b/altoslib/AltosEeprom.java
@@ -1,132 +1,291 @@
/*
- * Copyright © 2013 Keith Packard <keithp@keithp.com>
+ * Copyright © 2017 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
+ * 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_11;
+package org.altusmetrum.altoslib_12;
-import java.io.*;
import java.util.*;
-import java.text.*;
+import java.io.*;
+
+public class AltosEeprom {
-public abstract class AltosEeprom implements AltosStateUpdate {
- public int cmd;
- public int tick;
- public int data8[];
- public boolean valid;
+ private AltosJson config;
+ ArrayList<Byte> data;
+ private AltosConfigData config_data;
- public int data8(int i) {
- return data8[i];
+ /*
+ * Public accessor APIs
+ */
+ public int data8(int offset) {
+ return ((int) data.get(offset)) & 0xff;
}
- public int data16(int i) {
- return ((data8[i] | (data8[i+1] << 8)) << 16) >> 16;
+ public int data16(int offset) {
+ return data8(offset) | (data8(offset+1) << 8);
}
- public int data24(int i) {
- return data8[i] | (data8[i+1] << 8) | (data8[i+2] << 16);
+ public int data24(int offset) {
+ return (data8(offset) |
+ (data8(offset+1) << 8) |
+ (data8(offset+2) << 16));
}
- public int data32(int i) {
- return data8[i] | (data8[i+1] << 8) | (data8[i+2] << 16) | (data8[i+3] << 24);
+ public int data32(int offset) {
+ return (data8(offset) |
+ (data8(offset+1) << 8) |
+ (data8(offset+2) << 16) |
+ (data8(offset+3) << 24));
}
- public boolean has_seconds() { return false; }
+ public int size() {
+ return data.size();
+ }
- public int seconds() { return 0; }
+ public AltosConfigData config_data() {
+ if (config_data == null) {
+ config_data = (AltosConfigData) config.make(AltosConfigData.class);
+ if (config_data == null)
+ config_data = new AltosConfigData();
- public final static int header_length = 4;
+ if (config_data.log_format == AltosLib.AO_LOG_FORMAT_UNKNOWN) {
+ config_data.log_format = AltosLib.AO_LOG_FORMAT_FULL;
+ if (config_data.product != null) {
+ if (config_data.product.startsWith("TeleMetrum"))
+ config_data.log_format = AltosLib.AO_LOG_FORMAT_FULL;
+ else if (config_data.product.startsWith("TeleMini"))
+ config_data.log_format = AltosLib.AO_LOG_FORMAT_TINY;
+ }
+ }
+ }
+ return config_data;
+ }
+
+ private void write_config(Writer w) throws IOException {
+ config.write(w, 0, true);
+ w.append('\n');
+ }
+
+ /*
+ * Private I/O APIs
+ */
+ private void write_data(Writer w) throws IOException {
+ PrintWriter pw = new PrintWriter(w);
- public abstract int record_length();
+ for (int i = 0; i < data.size(); i++) {
+ if (i > 0) {
+ if ((i & 0x1f) == 0)
+ pw.printf("\n");
+ else
+ pw.printf(" ");
+ }
+ pw.printf("%02x", data.get(i));
+ }
+ w.append('\n');
+ }
- public void update_state(AltosState state) {
- if (cmd == AltosLib.AO_LOG_FLIGHT)
- state.set_boost_tick(tick);
- else
- state.set_tick(tick);
+ private boolean read_config(InputStream stream) throws IOException {
+ config = AltosJson.fromInputStream(stream);
+ if (config == null)
+ return false;
+ return true;
}
- public void write(PrintStream out) {
- out.printf("%c %04x", cmd, tick);
- if (data8 != null) {
- for (int i = 0; i < data8.length; i++)
- out.printf (" %02x", data8[i]);
+ private String read_line(InputStream stream) throws IOException {
+ StringBuffer buffer = null;
+ int c;
+
+ for (;;) {
+ c = stream.read();
+ if (c == -1 && buffer == null)
+ return null;
+ if (buffer == null)
+ buffer = new StringBuffer();
+ if (c == -1 || c == '\n')
+ return buffer.toString();
+ buffer.append((char) c);
}
- out.printf ("\n");
}
- public String string() {
- String s;
+ private boolean read_data(InputStream stream) throws IOException {
+ String s;
+
+ data = new ArrayList<Byte>();
+ while ((s = read_line(stream)) != null) {
- s = String.format("%c %04x", cmd, tick);
- if (data8 != null) {
- for (int i = 0; i < data8.length; i++) {
- String d = String.format(" %02x", data8[i]);
- s = s.concat(d);
+ String[] tokens = s.split("\\s+");
+
+ for (int i = 0; i < tokens.length; i++) {
+ if (tokens[i].length() > 0) {
+ try {
+ data.add((byte) AltosLib.fromhex(tokens[i]));
+ } catch (NumberFormatException e) {
+ throw new IOException(e.toString());
+ }
+ }
}
}
- s = s.concat("\n");
- return s;
+ return true;
}
- void parse_chunk(AltosEepromChunk chunk, int start) throws ParseException {
- cmd = chunk.data(start);
+ private boolean read_old_config(InputStream stream) throws IOException {
+ AltosConfigData cfg = new AltosConfigData();
+ for (;;) {
+ boolean done = false;
- int data_length = record_length() - header_length;
+ /* The data starts with an upper case F character followed by a space */
+ stream.mark(2);
+ int first = stream.read();
+ if (first == 'F') {
+ int second = stream.read();
+ if (second == ' ')
+ done = true;
+ }
+ stream.reset();
+ if (done)
+ break;
- valid = !chunk.erased(start, record_length());
- if (valid) {
- if (AltosConvert.checksum(chunk.data, start, record_length()) != 0)
- throw new ParseException(String.format("invalid checksum at 0x%x",
- chunk.address + start), 0);
- } else {
- cmd = AltosLib.AO_LOG_INVALID;
+ String line = read_line(stream);
+ if (line == null)
+ return false;
+ cfg.parse_line(line);
}
+ config = new AltosJson(cfg);
+ return true;
+ }
- tick = chunk.data16(start+2);
+ private boolean read_old_data(InputStream stream) throws IOException {
+ String line;
- data8 = new int[data_length];
- for (int i = 0; i < data_length; i++)
- data8[i] = chunk.data(start + header_length + i);
- }
+ data = new ArrayList<Byte>();
+ while ((line = read_line(stream)) != null) {
+ String[] tokens = line.split("\\s+");
- void parse_string(String line) {
- valid = false;
- tick = 0;
- cmd = AltosLib.AO_LOG_INVALID;
+ /* Make sure there's at least a type and time */
+ if (tokens.length < 2)
+ break;
- int data_length = record_length() - header_length;
+ /* packet type */
+ if (tokens[0].length() != 1)
+ break;
+ int start = data.size();
- if (line == null)
- return;
- try {
- String[] tokens = line.split("\\s+");
+ if (config_data().log_format != AltosLib.AO_LOG_FORMAT_TINY) {
+ byte cmd = (byte) tokens[0].codePointAt(0);
+ data.add(cmd);
- if (tokens[0].length() == 1) {
- if (tokens.length == 2 + data_length) {
- cmd = tokens[0].codePointAt(0);
- tick = Integer.parseInt(tokens[1],16);
- valid = true;
- data8 = new int[data_length];
+ int time = AltosLib.fromhex(tokens[1]);
- for (int i = 0; i < data_length; i++)
- data8[i] = Integer.parseInt(tokens[2 + i],16);
+ data.add((byte) 0);
+ data.add((byte) (time & 0xff));
+ data.add((byte) (time >> 8));
+ }
+ if (tokens.length == 4) {
+ /* Handle ancient log files */
+ if (config_data().log_format == AltosLib.AO_LOG_FORMAT_TINY) {
+ /*
+ * Ancient TeleMini log files stored "extra" data to pretend
+ * that it was a TeleMetrum device. Throw that away and
+ * just save the actual log data.
+ */
+ int a = AltosLib.fromhex(tokens[2]);
+ int b = AltosLib.fromhex(tokens[3]);
+ if (a != 0)
+ b = 0x8000 | a;
+ data.add((byte) (b & 0xff));
+ data.add((byte) ((b >> 8)));
+ } else {
+ for (int i = 2; i < tokens.length; i++) {
+ int v = AltosLib.fromhex(tokens[i]);
+ data.add((byte) (v & 0xff));
+ data.add((byte) ((v >> 8)));
+ }
+ /* Re-compute the checksum byte */
+ data.set(start + 1, (byte) (256 - AltosConvert.checksum(data, start, data.size() - start)));
}
+ } else {
+ for (int i = 2; i < tokens.length; i++)
+ data.add((byte) AltosLib.fromhex(tokens[i]));
+ /* Re-compute the checksum byte */
+ data.set(start + 1, (byte) (256 - AltosConvert.checksum(data, start, data.size() - start)));
}
- } catch (NumberFormatException ne) {
}
+ return true;
+ }
+
+ private void read(InputStream stream) throws IOException {
+ BufferedInputStream bis = new BufferedInputStream(stream);
+
+ bis.mark(1);
+ int c = bis.read();
+ bis.reset();
+
+ if (c == '{') {
+ if (!read_config(bis))
+ throw new IOException("failed to read config");
+ if (!read_data(bis))
+ throw new IOException("failed to read data");
+ } else {
+ if (!read_old_config(bis))
+ throw new IOException("failed to read old config");
+ if (!read_old_data(bis))
+ throw new IOException("failed to read old data");
+ }
+ }
+
+ /*
+ * Public APIs for I/O
+ */
+ public void write(Writer w) throws IOException {
+ write_config(w);
+ write_data(w);
+ }
+
+ public String toString() {
+ try {
+ Writer w = new StringWriter();
+
+ write(w);
+ return w.toString();
+ } catch (Exception e) {
+ return null;
+ }
+ }
+
+ public void print() throws IOException {
+ System.out.printf("%s", toString());
+ }
+
+ /*
+ * Constructors
+ */
+ public AltosEeprom(InputStream stream) throws IOException {
+ read(stream);
+ }
+
+ public AltosEeprom(String s) throws IOException {
+ read(new AltosStringInputStream(s));
+ }
+
+ public AltosEeprom(AltosJson config, ArrayList<Byte> data) {
+ this.config = config;
+ this.data = data;
+ }
+
+ public AltosEeprom(AltosConfigData config_data, ArrayList<Byte> data) {
+ this.config = new AltosJson(config_data);
+ this.data = data;
+ }
+
+ public AltosEeprom() {
}
}
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