--- /dev/null
+/*
+ * 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
+ * (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.
+ */
+
+package org.altusmetrum.altoslib_11;
+
+import java.util.*;
+import java.io.*;
+
+public class AltosEeprom {
+
+ private AltosJson config;
+ ArrayList<Byte> data;
+ private AltosConfigData config_data;
+
+ /*
+ * Public accessor APIs
+ */
+ public int data8(int offset) {
+ return ((int) data.get(offset)) & 0xff;
+ }
+
+ public int data16(int offset) {
+ return data8(offset) | (data8(offset+1) << 8);
+ }
+
+ public int data24(int offset) {
+ return (data8(offset) |
+ (data8(offset+1) << 8) |
+ (data8(offset+2) << 16));
+ }
+
+ public int data32(int offset) {
+ return (data8(offset) |
+ (data8(offset+1) << 8) |
+ (data8(offset+2) << 16) |
+ (data8(offset+3) << 24));
+ }
+
+ public int size() {
+ return data.size();
+ }
+
+ public AltosConfigData config_data() {
+ if (config_data == null) {
+ config_data = (AltosConfigData) config.make(AltosConfigData.class);
+ if (config_data == null)
+ config_data = new AltosConfigData();
+
+ 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);
+
+ 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');
+ }
+
+ private boolean read_config(InputStream stream) throws IOException {
+ config = AltosJson.fromInputStream(stream);
+ if (config == null)
+ return false;
+ return true;
+ }
+
+ 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);
+ }
+ }
+
+ private boolean read_data(InputStream stream) throws IOException {
+ String s;
+
+ data = new ArrayList<Byte>();
+ while ((s = read_line(stream)) != null) {
+
+ 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());
+ }
+ }
+ }
+ }
+ return true;
+ }
+
+ private boolean read_old_config(InputStream stream) throws IOException {
+ AltosConfigData cfg = new AltosConfigData();
+ for (;;) {
+ boolean done = false;
+
+ /* 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;
+
+ String line = read_line(stream);
+ if (line == null)
+ return false;
+ cfg.parse_line(line);
+ }
+ config = new AltosJson(cfg);
+ return true;
+ }
+
+ private boolean read_old_data(InputStream stream) throws IOException {
+ String line;
+
+ data = new ArrayList<Byte>();
+ while ((line = read_line(stream)) != null) {
+ String[] tokens = line.split("\\s+");
+
+ /* Make sure there's at least a type and time */
+ if (tokens.length < 2)
+ break;
+
+ /* packet type */
+ if (tokens[0].length() != 1)
+ break;
+ int start = data.size();
+
+ if (config_data().log_format != AltosLib.AO_LOG_FORMAT_TINY) {
+ byte cmd = (byte) tokens[0].codePointAt(0);
+ data.add(cmd);
+
+ int time = AltosLib.fromhex(tokens[1]);
+
+ 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)));
+ }
+ }
+ 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() {
+ }
+}
projects / fw / altos / blobdiff