From bd50024ebcfd64ea8d031561bfc59e84104957e6 Mon Sep 17 00:00:00 2001 From: mike wakerly Date: Wed, 28 Dec 2011 15:07:58 -0800 Subject: [PATCH] Initial commit. --- CHANGELOG.txt | 3 + LICENSE.txt | 165 ++++++++ README.md | 81 ++++ UsbSerialExamples/.classpath | 9 + UsbSerialExamples/.project | 33 ++ .../.settings/org.eclipse.jdt.core.prefs | 280 +++++++++++++ .../.settings/org.eclipse.jdt.ui.prefs | 4 + UsbSerialExamples/AndroidManifest.xml | 32 ++ UsbSerialExamples/proguard.cfg | 40 ++ UsbSerialExamples/project.properties | 12 + .../res/drawable-hdpi/ic_launcher.png | Bin 0 -> 4147 bytes .../res/drawable-ldpi/ic_launcher.png | Bin 0 -> 1723 bytes .../res/drawable-mdpi/ic_launcher.png | Bin 0 -> 2574 bytes UsbSerialExamples/res/layout/main.xml | 26 ++ UsbSerialExamples/res/values/strings.xml | 7 + UsbSerialExamples/res/xml/device_filter.xml | 5 + .../usbserial/examples/DemoActivity.java | 165 ++++++++ UsbSerialLibrary/.classpath | 7 + UsbSerialLibrary/.project | 33 ++ .../.settings/org.eclipse.jdt.core.prefs | 280 +++++++++++++ .../.settings/org.eclipse.jdt.ui.prefs | 4 + UsbSerialLibrary/AndroidManifest.xml | 7 + UsbSerialLibrary/proguard.cfg | 36 ++ UsbSerialLibrary/project.properties | 12 + .../usbserial/driver/FtdiSerialDriver.java | 376 ++++++++++++++++++ .../usbserial/driver/UsbSerialDriver.java | 76 ++++ .../usbserial/driver/UsbSerialProber.java | 105 +++++ .../driver/UsbSerialRuntimeException.java | 46 +++ .../hoho/android/usbserial/util/HexDump.java | 149 +++++++ .../util/SerialInputOutputManager.java | 181 +++++++++ 30 files changed, 2174 insertions(+) create mode 100644 CHANGELOG.txt create mode 100644 LICENSE.txt create mode 100644 README.md create mode 100644 UsbSerialExamples/.classpath create mode 100644 UsbSerialExamples/.project create mode 100644 UsbSerialExamples/.settings/org.eclipse.jdt.core.prefs create mode 100644 UsbSerialExamples/.settings/org.eclipse.jdt.ui.prefs create mode 100644 UsbSerialExamples/AndroidManifest.xml create mode 100644 UsbSerialExamples/proguard.cfg create mode 100644 UsbSerialExamples/project.properties create mode 100644 UsbSerialExamples/res/drawable-hdpi/ic_launcher.png create mode 100644 UsbSerialExamples/res/drawable-ldpi/ic_launcher.png create mode 100644 UsbSerialExamples/res/drawable-mdpi/ic_launcher.png create mode 100644 UsbSerialExamples/res/layout/main.xml create mode 100644 UsbSerialExamples/res/values/strings.xml create mode 100644 UsbSerialExamples/res/xml/device_filter.xml create mode 100644 UsbSerialExamples/src/com/hoho/android/usbserial/examples/DemoActivity.java create mode 100644 UsbSerialLibrary/.classpath create mode 100644 UsbSerialLibrary/.project create mode 100644 UsbSerialLibrary/.settings/org.eclipse.jdt.core.prefs create mode 100644 UsbSerialLibrary/.settings/org.eclipse.jdt.ui.prefs create mode 100644 UsbSerialLibrary/AndroidManifest.xml create mode 100644 UsbSerialLibrary/proguard.cfg create mode 100644 UsbSerialLibrary/project.properties create mode 100644 UsbSerialLibrary/src/com/hoho/android/usbserial/driver/FtdiSerialDriver.java create mode 100644 UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialDriver.java create mode 100644 UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java create mode 100644 UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialRuntimeException.java create mode 100644 UsbSerialLibrary/src/com/hoho/android/usbserial/util/HexDump.java create mode 100644 UsbSerialLibrary/src/com/hoho/android/usbserial/util/SerialInputOutputManager.java diff --git a/CHANGELOG.txt b/CHANGELOG.txt new file mode 100644 index 0000000..9d43608 --- /dev/null +++ b/CHANGELOG.txt @@ -0,0 +1,3 @@ +2011-12-28 mike wakerly + + * Initial release. diff --git a/LICENSE.txt b/LICENSE.txt new file mode 100644 index 0000000..65c5ca8 --- /dev/null +++ b/LICENSE.txt @@ -0,0 +1,165 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. 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Combined Works. + + You may convey a Combined Work under terms of your choice that, +taken together, effectively do not restrict modification of the +portions of the Library contained in the Combined Work and reverse +engineering for debugging such modifications, if you also do each of +the following: + + a) Give prominent notice with each copy of the Combined Work that + the Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the Combined Work with a copy of the GNU GPL and this license + document. + + c) For a Combined Work that displays copyright notices during + execution, include the copyright notice for the Library among + these notices, as well as a reference directing the user to the + copies of the GNU GPL and this license document. + + d) Do one of the following: + + 0) Convey the Minimal Corresponding Source under the terms of this + License, and the Corresponding Application Code in a form + suitable for, and under terms that permit, the user to + recombine or relink the Application with a modified version of + the Linked Version to produce a modified Combined Work, in the + manner specified by section 6 of the GNU GPL for conveying + Corresponding Source. + + 1) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (a) uses at run time + a copy of the Library already present on the user's computer + system, and (b) will operate properly with a modified version + of the Library that is interface-compatible with the Linked + Version. + + e) Provide Installation Information, but only if you would otherwise + be required to provide such information under section 6 of the + GNU GPL, and only to the extent that such information is + necessary to install and execute a modified version of the + Combined Work produced by recombining or relinking the + Application with a modified version of the Linked Version. (If + you use option 4d0, the Installation Information must accompany + the Minimal Corresponding Source and Corresponding Application + Code. If you use option 4d1, you must provide the Installation + Information in the manner specified by section 6 of the GNU GPL + for conveying Corresponding Source.) + + 5. Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/README.md b/README.md new file mode 100644 index 0000000..63e4827 --- /dev/null +++ b/README.md @@ -0,0 +1,81 @@ +# usb-serial-for-android + +Library for talking to Arduinos and other USB serial devices on Android, using +USB Host mode and Android 3.1+ + +Homepage: http://code.google.com/p/usb-serial-for-android + +## About + +This project provides an Android userspace driver for USB serial devices. You +can use it to talk to your Arduino, or any other supported serial devices. + +## Usage + +Download the sources. Inside you will find two Eclipse projects: + +* UsbSerialLibrary - the main library code, an "Android Library" project. +* UsbSerialExamples - a demo Android application + +In Eclipse, open "File", "Import", and then select "General, "Existing Projects +into Workspace". + +Navigate to the directory you just checked out and import both projects. Then +run the demo application. + + +## Compatible Serial Devices + +Supported and tested: + +* FT232R + +Possibly supported (untested): + +* FT232H +* FT2232D +* FT2432H + +Unsupported (send patches!): + +* Arduino Uno (CDC) + + +## Compatible Android Devices + +Supported and tested: + +* Motorola Xoom, Android 3.1/3.2 + +Possibly supported (untested): + +* Samsung Galaxy Tab 10.1 + + +## License and Copyright + +This library is licensed under LGPL Version 2.1. Please see LICENSE.txt for the +complete license. + +Copyright 2011, Google Inc. All Rights Reserved. + +Portions of this library are based on libftdi +(http://www.intra2net.com/en/developer/libftdi). Please see +FtdiSerialDriver.java for more information. + + +## Contributing + +Patches are welcome. We're especially interested in supporting more devices. +Please open a bug report. + + +## Credits + +Author/maintainer: mike wakerly + +Contributors: + +* Robert Tsai (code review) + + diff --git a/UsbSerialExamples/.classpath b/UsbSerialExamples/.classpath new file mode 100644 index 0000000..e913ecc --- /dev/null +++ b/UsbSerialExamples/.classpath @@ -0,0 +1,9 @@ + + + + + + + + + diff --git a/UsbSerialExamples/.project b/UsbSerialExamples/.project new file mode 100644 index 0000000..a74aedb --- /dev/null +++ b/UsbSerialExamples/.project @@ -0,0 +1,33 @@ + + + UsbSerialExamples + + + + + + com.android.ide.eclipse.adt.ResourceManagerBuilder + + + + + com.android.ide.eclipse.adt.PreCompilerBuilder + + + + + org.eclipse.jdt.core.javabuilder + + + + + com.android.ide.eclipse.adt.ApkBuilder + + + + + + com.android.ide.eclipse.adt.AndroidNature + org.eclipse.jdt.core.javanature + + diff --git a/UsbSerialExamples/.settings/org.eclipse.jdt.core.prefs 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+org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line=true +org.eclipse.jdt.core.formatter.tabulation.char=space +org.eclipse.jdt.core.formatter.tabulation.size=4 +org.eclipse.jdt.core.formatter.use_on_off_tags=false +org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations=false +org.eclipse.jdt.core.formatter.wrap_before_binary_operator=true +org.eclipse.jdt.core.formatter.wrap_outer_expressions_when_nested=true diff --git a/UsbSerialExamples/.settings/org.eclipse.jdt.ui.prefs b/UsbSerialExamples/.settings/org.eclipse.jdt.ui.prefs new file mode 100644 index 0000000..6d4c90a --- /dev/null +++ b/UsbSerialExamples/.settings/org.eclipse.jdt.ui.prefs @@ -0,0 +1,4 @@ +#Thu Apr 21 23:18:48 PDT 2011 +eclipse.preferences.version=1 +formatter_profile=_Android +formatter_settings_version=11 diff --git a/UsbSerialExamples/AndroidManifest.xml b/UsbSerialExamples/AndroidManifest.xml new file mode 100644 index 0000000..ec67dec --- /dev/null +++ b/UsbSerialExamples/AndroidManifest.xml @@ -0,0 +1,32 @@ + + + + + + + + + + + + + + + + + + + + + + diff --git a/UsbSerialExamples/proguard.cfg b/UsbSerialExamples/proguard.cfg new file mode 100644 index 0000000..b1cdf17 --- /dev/null +++ b/UsbSerialExamples/proguard.cfg @@ -0,0 +1,40 @@ +-optimizationpasses 5 +-dontusemixedcaseclassnames +-dontskipnonpubliclibraryclasses +-dontpreverify +-verbose +-optimizations !code/simplification/arithmetic,!field/*,!class/merging/* + +-keep public class * extends android.app.Activity +-keep public class * extends android.app.Application +-keep public class * extends android.app.Service +-keep public class * extends android.content.BroadcastReceiver +-keep public class * extends android.content.ContentProvider +-keep public class * extends android.app.backup.BackupAgentHelper +-keep public class * extends android.preference.Preference +-keep public class com.android.vending.licensing.ILicensingService + +-keepclasseswithmembernames class * { + native ; +} + +-keepclasseswithmembers class * { + public (android.content.Context, android.util.AttributeSet); +} + +-keepclasseswithmembers class * { + public (android.content.Context, android.util.AttributeSet, int); +} + +-keepclassmembers class * extends android.app.Activity { + public void *(android.view.View); +} + +-keepclassmembers enum * { + public static **[] values(); + public static ** valueOf(java.lang.String); +} + +-keep class * implements android.os.Parcelable { + public static final android.os.Parcelable$Creator *; +} diff --git a/UsbSerialExamples/project.properties b/UsbSerialExamples/project.properties new file mode 100644 index 0000000..117494e --- /dev/null +++ b/UsbSerialExamples/project.properties @@ -0,0 +1,12 @@ +# This file is automatically generated by Android Tools. +# Do not modify this file -- YOUR CHANGES WILL BE ERASED! +# +# This file must be checked in Version Control Systems. +# +# To customize properties used by the Ant build system use, +# 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b/UsbSerialExamples/src/com/hoho/android/usbserial/examples/DemoActivity.java @@ -0,0 +1,165 @@ +/* Copyright 2011 Google Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + * + * Project home page: http://code.google.com/p/usb-serial-for-android/ + */ + +package com.hoho.android.usbserial.examples; + +import android.app.Activity; +import android.content.Context; +import android.hardware.usb.UsbManager; +import android.os.Bundle; +import android.util.Log; +import android.widget.ScrollView; +import android.widget.TextView; + +import com.hoho.android.usbserial.R; +import com.hoho.android.usbserial.driver.UsbSerialDriver; +import com.hoho.android.usbserial.driver.UsbSerialProber; +import com.hoho.android.usbserial.util.HexDump; +import com.hoho.android.usbserial.util.SerialInputOutputManager; + +import java.io.IOException; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; + +/** + * A sample Activity demonstrating USB-Serial support. + * + * @author mike wakerly (opensource@hoho.com) + */ +public class DemoActivity extends Activity { + + private final String TAG = DemoActivity.class.getSimpleName(); + + /** + * The device currently in use, or {@code null}. + */ + private UsbSerialDriver mSerialDevice; + + /** + * The system's USB service. + */ + private UsbManager mUsbManager; + + private TextView mTitleTextView; + private TextView mDumpTextView; + private ScrollView mScrollView; + + private final ExecutorService mExecutor = Executors.newSingleThreadExecutor(); + + private SerialInputOutputManager mSerialIoManager; + + private final SerialInputOutputManager.Listener mListener = + new SerialInputOutputManager.Listener() { + + @Override + public void onRunError(Exception e) { + Log.d(TAG, "Runner stopped."); + } + + @Override + public void onNewData(final byte[] data) { + DemoActivity.this.runOnUiThread(new Runnable() { + @Override + public void run() { + DemoActivity.this.updateReceivedData(data); + } + }); + } + }; + + @Override + public void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + setContentView(R.layout.main); + mUsbManager = (UsbManager) getSystemService(Context.USB_SERVICE); + mTitleTextView = (TextView) findViewById(R.id.demoTitle); + mDumpTextView = (TextView) findViewById(R.id.demoText); + mScrollView = (ScrollView) findViewById(R.id.demoScroller); + } + + @Override + protected void onPause() { + super.onPause(); + stopIoManager(); + if (mSerialDevice != null) { + try { + mSerialDevice.close(); + } catch (IOException e) { + // Ignore. + } + mSerialDevice = null; + } + } + + @Override + protected void onResume() { + super.onResume(); + mSerialDevice = UsbSerialProber.acquire(mUsbManager); + Log.d(TAG, "Resumed, mSerialDevice=" + mSerialDevice); + if (mSerialDevice == null) { + mTitleTextView.setText("No serial device."); + } else { + try { + mSerialDevice.open(); + } catch (IOException e) { + Log.e(TAG, "Error setting up device: " + e.getMessage(), e); + mTitleTextView.setText("Error opening device: " + e.getMessage()); + try { + mSerialDevice.close(); + } catch (IOException e2) { + // Ignore. + } + mSerialDevice = null; + return; + } + mTitleTextView.setText("Serial device: " + mSerialDevice); + } + onDeviceStateChange(); + } + + private void stopIoManager() { + if (mSerialIoManager != null) { + Log.i(TAG, "Stopping io manager .."); + mSerialIoManager.stop(); + mSerialIoManager = null; + } + } + + private void startIoManager() { + if (mSerialDevice != null) { + Log.i(TAG, "Starting io manager .."); + mSerialIoManager = new SerialInputOutputManager(mSerialDevice, mListener); + mExecutor.submit(mSerialIoManager); + } + } + + private void onDeviceStateChange() { + stopIoManager(); + startIoManager(); + } + + private void updateReceivedData(byte[] data) { + final String message = "Read " + data.length + " bytes: \n" + + HexDump.dumpHexString(data) + "\n\n"; + mDumpTextView.append(message); + mScrollView.smoothScrollTo(0, mDumpTextView.getBottom()); + } + +} diff --git a/UsbSerialLibrary/.classpath b/UsbSerialLibrary/.classpath new file mode 100644 index 0000000..6c635c0 --- /dev/null +++ b/UsbSerialLibrary/.classpath @@ -0,0 +1,7 @@ + + + + + + + diff --git a/UsbSerialLibrary/.project b/UsbSerialLibrary/.project new file mode 100644 index 0000000..b8b86d8 --- /dev/null +++ b/UsbSerialLibrary/.project @@ -0,0 +1,33 @@ + + + UsbSerialLibrary + + + + + + com.android.ide.eclipse.adt.ResourceManagerBuilder + + + + + com.android.ide.eclipse.adt.PreCompilerBuilder + + + + + org.eclipse.jdt.core.javabuilder + + + + + com.android.ide.eclipse.adt.ApkBuilder + + + + + + com.android.ide.eclipse.adt.AndroidNature + org.eclipse.jdt.core.javanature + + diff --git a/UsbSerialLibrary/.settings/org.eclipse.jdt.core.prefs b/UsbSerialLibrary/.settings/org.eclipse.jdt.core.prefs new file mode 100644 index 0000000..d811575 --- /dev/null +++ b/UsbSerialLibrary/.settings/org.eclipse.jdt.core.prefs @@ -0,0 +1,280 @@ +#Thu Jun 02 12:32:09 PDT 2011 +eclipse.preferences.version=1 +org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled +org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6 +org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve +org.eclipse.jdt.core.compiler.compliance=1.6 +org.eclipse.jdt.core.compiler.debug.lineNumber=generate +org.eclipse.jdt.core.compiler.debug.localVariable=generate +org.eclipse.jdt.core.compiler.debug.sourceFile=generate +org.eclipse.jdt.core.compiler.problem.assertIdentifier=error +org.eclipse.jdt.core.compiler.problem.enumIdentifier=error +org.eclipse.jdt.core.compiler.source=1.6 +org.eclipse.jdt.core.formatter.align_type_members_on_columns=false +org.eclipse.jdt.core.formatter.alignment_for_arguments_in_allocation_expression=16 +org.eclipse.jdt.core.formatter.alignment_for_arguments_in_annotation=0 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+org.eclipse.jdt.core.formatter.put_empty_statement_on_new_line=true +org.eclipse.jdt.core.formatter.tabulation.char=space +org.eclipse.jdt.core.formatter.tabulation.size=4 +org.eclipse.jdt.core.formatter.use_on_off_tags=false +org.eclipse.jdt.core.formatter.use_tabs_only_for_leading_indentations=false +org.eclipse.jdt.core.formatter.wrap_before_binary_operator=true +org.eclipse.jdt.core.formatter.wrap_outer_expressions_when_nested=true diff --git a/UsbSerialLibrary/.settings/org.eclipse.jdt.ui.prefs b/UsbSerialLibrary/.settings/org.eclipse.jdt.ui.prefs new file mode 100644 index 0000000..6d4c90a --- /dev/null +++ b/UsbSerialLibrary/.settings/org.eclipse.jdt.ui.prefs @@ -0,0 +1,4 @@ +#Thu Apr 21 23:18:48 PDT 2011 +eclipse.preferences.version=1 +formatter_profile=_Android +formatter_settings_version=11 diff --git a/UsbSerialLibrary/AndroidManifest.xml b/UsbSerialLibrary/AndroidManifest.xml new file mode 100644 index 0000000..9355f7b --- /dev/null +++ b/UsbSerialLibrary/AndroidManifest.xml @@ -0,0 +1,7 @@ + + + + diff --git a/UsbSerialLibrary/proguard.cfg b/UsbSerialLibrary/proguard.cfg new file mode 100644 index 0000000..12dd039 --- /dev/null +++ b/UsbSerialLibrary/proguard.cfg @@ -0,0 +1,36 @@ +-optimizationpasses 5 +-dontusemixedcaseclassnames +-dontskipnonpubliclibraryclasses +-dontpreverify +-verbose +-optimizations !code/simplification/arithmetic,!field/*,!class/merging/* + +-keep public class * extends android.app.Activity +-keep public class * extends android.app.Application +-keep public class * extends android.app.Service +-keep public class * extends android.content.BroadcastReceiver +-keep public class * extends android.content.ContentProvider +-keep public class * extends android.app.backup.BackupAgentHelper +-keep public class * extends android.preference.Preference +-keep public class com.android.vending.licensing.ILicensingService + +-keepclasseswithmembernames class * { + native ; +} + +-keepclasseswithmembernames class * { + public (android.content.Context, android.util.AttributeSet); +} + +-keepclasseswithmembernames class * { + public (android.content.Context, android.util.AttributeSet, int); +} + +-keepclassmembers enum * { + public static **[] values(); + public static ** valueOf(java.lang.String); +} + +-keep class * implements android.os.Parcelable { + public static final android.os.Parcelable$Creator *; +} diff --git a/UsbSerialLibrary/project.properties b/UsbSerialLibrary/project.properties new file mode 100644 index 0000000..786389e --- /dev/null +++ b/UsbSerialLibrary/project.properties @@ -0,0 +1,12 @@ +# This file is automatically generated by Android Tools. +# Do not modify this file -- YOUR CHANGES WILL BE ERASED! +# +# This file must be checked in Version Control Systems. +# +# To customize properties used by the Ant build system use, +# "ant.properties", and override values to adapt the script to your +# project structure. + +# Project target. +target=android-12 +android.library=true diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/FtdiSerialDriver.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/FtdiSerialDriver.java new file mode 100644 index 0000000..2480021 --- /dev/null +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/FtdiSerialDriver.java @@ -0,0 +1,376 @@ +/* Copyright 2011 Google Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + * + * Project home page: http://code.google.com/p/usb-serial-for-android/ + */ + +package com.hoho.android.usbserial.driver; + +import android.hardware.usb.UsbConstants; +import android.hardware.usb.UsbDevice; +import android.hardware.usb.UsbDeviceConnection; +import android.hardware.usb.UsbEndpoint; +import android.util.Log; + +import java.io.IOException; +import java.util.Arrays; + +/** + * A {@link UsbSerialDriver} implementation for a variety of FTDI devices + *

+ * This driver is based on libftdi, and is + * copyright and subject to the following terms: + * + * 

+ *   Copyright (C) 2003 by Intra2net AG
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU Lesser General Public License
+ *   version 2.1 as published by the Free Software Foundation;
+ *
+ *   opensource@intra2net.com
+ *   http://www.intra2net.com/en/developer/libftdi
+ *
+ * + *

+ *

+ * Some FTDI devices have not been tested; see later listing of supported and + * unsupported devices. Devices listed as "supported" support the following + * features: + *

    + *
  • Read and write of serial data (see {@link #read(byte[], int)} and + * {@link #write(byte[], int)}. + *
  • Setting baud rate (see {@link #setBaudRate(int)}). + *
+ *

+ *

+ * Supported and tested devices: + *

    + *
  • {@value DeviceType#TYPE_R}
    • + *
+ *

+ *

+ * Unsupported but possibly working devices (please contact the author with + * feedback or patches): + *

    + *
  • {@value DeviceType#TYPE_2232C}
    • + *
  • {@value DeviceType#TYPE_2232H}
    • + *
  • {@value DeviceType#TYPE_4232H}
    • + *
  • {@value DeviceType#TYPE_AM}
    • + *
  • {@value DeviceType#TYPE_BM}
    • + *
+ *

+ * + * @author mike wakerly (opensource@hoho.com) + * @see USB Serial + * for Android project page + * @see FTDI Homepage + * @see libftdi + */ +public class FtdiSerialDriver implements UsbSerialDriver { + + private static final int DEFAULT_BAUD_RATE = 115200; + + public static final int USB_TYPE_STANDARD = 0x00 << 5; + public static final int USB_TYPE_CLASS = 0x00 << 5; + public static final int USB_TYPE_VENDOR = 0x00 << 5; + public static final int USB_TYPE_RESERVED = 0x00 << 5; + + public static final int USB_RECIP_DEVICE = 0x00; + public static final int USB_RECIP_INTERFACE = 0x01; + public static final int USB_RECIP_ENDPOINT = 0x02; + public static final int USB_RECIP_OTHER = 0x03; + + public static final int USB_ENDPOINT_IN = 0x80; + public static final int USB_ENDPOINT_OUT = 0x00; + + public static final int USB_WRITE_TIMEOUT_MILLIS = 5000; + public static final int USB_READ_TIMEOUT_MILLIS = 5000; + + // From ftdi.h + /** + * Reset the port. + */ + private static final int SIO_RESET_REQUEST = 0; + + /** + * Set the modem control register. + */ + private static final int SIO_MODEM_CTRL_REQUEST = 1; + + /** + * Set flow control register. + */ + private static final int SIO_SET_FLOW_CTRL_REQUEST = 2; + + /** + * Set baud rate. + */ + private static final int SIO_SET_BAUD_RATE_REQUEST = 3; + + /** + * Set the data characteristics of the port. + */ + private static final int SIO_SET_DATA_REQUEST = 4; + + private static final int SIO_RESET_SIO = 0; + + public static final int FTDI_DEVICE_OUT_REQTYPE = + UsbConstants.USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_OUT; + + public static final int FTDI_DEVICE_IN_REQTYPE = + UsbConstants.USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_ENDPOINT_IN; + + /** + * Size of chunks, used in {@link #write(byte[], int)}. + */ + private static final int WRITE_CHUNKSIZE = 4096; + + /** + * Length of the modem status header, transmitted with every read. + */ + private static final int MODEM_STATUS_HEADER_LENGTH = 2; + + private final String TAG = FtdiSerialDriver.class.getSimpleName(); + + private UsbDevice mDevice; + private UsbDeviceConnection mConnection; + private DeviceType mType; + + private final byte[] mReadBuffer = new byte[4096]; + + /** + * FTDI chip types. + */ + private static enum DeviceType { + TYPE_BM, TYPE_AM, TYPE_2232C, TYPE_R, TYPE_2232H, TYPE_4232H; + } + + private int mInterface = 0; /* INTERFACE_ANY */ + + private int mMaxPacketSize = 64; // TODO(mikey): detect + + /** + * Constructor. + * + * @param usbDevice the {@link UsbDevice} to use + * @param usbConnection the {@link UsbDeviceConnection} to use + * @throws UsbSerialRuntimeException if the given device is incompatible + * with this driver + */ + public FtdiSerialDriver(UsbDevice usbDevice, UsbDeviceConnection usbConnection) { + if (!probe(usbDevice)) { + throw new UsbSerialRuntimeException("Device type not supported."); + } + mConnection = usbConnection; + mDevice = usbDevice; + mType = null; + } + + public void reset() throws IOException { + int result = mConnection.controlTransfer(FTDI_DEVICE_OUT_REQTYPE, SIO_RESET_REQUEST, + SIO_RESET_SIO, 0 /* index */, null, 0, USB_WRITE_TIMEOUT_MILLIS); + if (result != 0) { + throw new IOException("Reset failed: result=" + result); + } + + // TODO(mikey): autodetect. + mType = DeviceType.TYPE_R; + } + + @Override + public void open() throws IOException { + boolean opened = false; + try { + for (int i = 0; i < mDevice.getInterfaceCount(); i++) { + if (mConnection.claimInterface(mDevice.getInterface(i), true)) { + Log.d(TAG, "claimInterface " + i + " SUCCESS"); + } else { + Log.d(TAG, "claimInterface " + i + " FAIL"); + } + } + reset(); + setBaudRate(DEFAULT_BAUD_RATE); + opened = true; + } finally { + if (!opened) { + close(); + } + } + } + + @Override + public void close() { + mConnection.close(); + } + + @Override + public int read(byte[] dest, int timeoutMillis) throws IOException { + final int readAmt = Math.min(dest.length, mReadBuffer.length); + final UsbEndpoint endpoint = mDevice.getInterface(0).getEndpoint(0); + + final int transferred = mConnection.bulkTransfer(endpoint, mReadBuffer, readAmt, + timeoutMillis); + if (transferred < MODEM_STATUS_HEADER_LENGTH) { + throw new IOException("Expected at least " + MODEM_STATUS_HEADER_LENGTH + " bytes"); + } + + final int nread = transferred - MODEM_STATUS_HEADER_LENGTH; + if (nread > 0) { + System.arraycopy(mReadBuffer, MODEM_STATUS_HEADER_LENGTH, dest, 0, nread); + } + return nread; + } + + @Override + public int write(byte[] src, int timeoutMillis) throws IOException { + final UsbEndpoint endpoint = mDevice.getInterface(0).getEndpoint(0); + int offset = 0; + + while (offset < src.length) { + final byte[] writeBuffer; + final int writeLength; + + // bulkTransfer does not support offsets; make a copy if necessary. + writeLength = Math.min(src.length - offset, WRITE_CHUNKSIZE); + if (offset == 0) { + writeBuffer = src; + } else { + writeBuffer = Arrays.copyOfRange(src, offset, offset + writeLength); + } + + final int amt = mConnection.bulkTransfer(endpoint, writeBuffer, writeLength, + timeoutMillis); + if (amt <= 0) { + throw new IOException("Error writing " + writeLength + + " bytes at offset " + offset); + } + offset += amt; + } + return offset; + } + + @Override + public int setBaudRate(int baudRate) throws IOException { + long[] vals = convertBaudrate(baudRate); + long actualBaudrate = vals[0]; + long index = vals[1]; + long value = vals[2]; + Log.i(TAG, "Requested baudrate=" + baudRate + ", actual=" + actualBaudrate); + + int result = mConnection.controlTransfer(FTDI_DEVICE_OUT_REQTYPE, + SIO_SET_BAUD_RATE_REQUEST, (int) value, (int) index, + null, 0, USB_WRITE_TIMEOUT_MILLIS); + if (result != 0) { + throw new IOException("Setting baudrate failed: result=" + result); + } + return (int) actualBaudrate; + } + + private long[] convertBaudrate(int baudrate) { + // TODO(mikey): Braindead transcription of libfti method. Clean up, + // using more idiomatic Java where possible. + int divisor = 24000000 / baudrate; + int bestDivisor = 0; + int bestBaud = 0; + int bestBaudDiff = 0; + int fracCode[] = { + 0, 3, 2, 4, 1, 5, 6, 7 + }; + + for (int i = 0; i < 2; i++) { + int tryDivisor = divisor + i; + int baudEstimate; + int baudDiff; + + if (tryDivisor <= 8) { + // Round up to minimum supported divisor + tryDivisor = 8; + } else if (mType != DeviceType.TYPE_AM && tryDivisor < 12) { + // BM doesn't support divisors 9 through 11 inclusive + tryDivisor = 12; + } else if (divisor < 16) { + // AM doesn't support divisors 9 through 15 inclusive + tryDivisor = 16; + } else { + if (mType == DeviceType.TYPE_AM) { + // TODO + } else { + if (tryDivisor > 0x1FFFF) { + // Round down to maximum supported divisor value (for + // BM) + tryDivisor = 0x1FFFF; + } + } + } + + // Get estimated baud rate (to nearest integer) + baudEstimate = (24000000 + (tryDivisor / 2)) / tryDivisor; + + // Get absolute difference from requested baud rate + if (baudEstimate < baudrate) { + baudDiff = baudrate - baudEstimate; + } else { + baudDiff = baudEstimate - baudrate; + } + + if (i == 0 || baudDiff < bestBaudDiff) { + // Closest to requested baud rate so far + bestDivisor = tryDivisor; + bestBaud = baudEstimate; + bestBaudDiff = baudDiff; + if (baudDiff == 0) { + // Spot on! No point trying + break; + } + } + } + + // Encode the best divisor value + long encodedDivisor = (bestDivisor >> 3) | (fracCode[bestDivisor & 7] << 14); + // Deal with special cases for encoded value + if (encodedDivisor == 1) { + encodedDivisor = 0; // 3000000 baud + } else if (encodedDivisor == 0x4001) { + encodedDivisor = 1; // 2000000 baud (BM only) + } + + // Split into "value" and "index" values + long value = encodedDivisor & 0xFFFF; + long index; + if (mType == DeviceType.TYPE_2232C || mType == DeviceType.TYPE_2232H + || mType == DeviceType.TYPE_4232H) { + index = (encodedDivisor >> 8) & 0xffff; + index &= 0xFF00; + index |= 0 /* TODO mIndex */; + } else { + index = (encodedDivisor >> 16) & 0xffff; + } + + // Return the nearest baud rate + return new long[] { + bestBaud, index, value + }; + } + + public static boolean probe(UsbDevice usbDevice) { + // TODO(mikey): Support other devices. + return usbDevice.getVendorId() == 0x0403 && usbDevice.getProductId() == 0x6001; + } + +} diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialDriver.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialDriver.java new file mode 100644 index 0000000..65d90d5 --- /dev/null +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialDriver.java @@ -0,0 +1,76 @@ +/* Copyright 2011 Google Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + * + * Project home page: http://code.google.com/p/usb-serial-for-android/ + */ + +package com.hoho.android.usbserial.driver; + +import java.io.IOException; + +/** + * Driver interface for a supported USB serial device. + * + * @author mike wakerly (opensource@hoho.com) + */ +public interface UsbSerialDriver { + + /** + * Opens and initializes the device as a USB serial device. Upon success, + * caller must ensure that {@link #close()} is eventually called. + * + * @throws IOException on error opening or initializing the device. + */ + public void open() throws IOException; + + /** + * Closes the serial device. + * + * @throws IOException on error closing the device. + */ + public void close() throws IOException; + + /** + * Reads as many bytes as possible into the destination buffer. + * + * @param dest the destination byte buffer + * @param timeoutMillis the timeout for reading + * @return the actual number of bytes read + * @throws IOException if an error occurred during reading + */ + public int read(final byte[] dest, final int timeoutMillis) throws IOException; + + /** + * Writes as many bytes as possible from the source buffer. + * + * @param src the source byte buffer + * @param timeoutMillis the timeout for writing + * @return the actual number of bytes written + * @throws IOException if an error occurred during writing + */ + public int write(final byte[] src, final int timeoutMillis) throws IOException; + + /** + * Sets the baud rate of the serial device. + * + * @param baudRate the desired baud rate, in bits per second + * @return the actual rate set + * @throws IOException on error setting the baud rate + */ + public int setBaudRate(final int baudRate) throws IOException; + +} diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java new file mode 100644 index 0000000..4d50e5c --- /dev/null +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialProber.java @@ -0,0 +1,105 @@ +/* Copyright 2011 Google Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + * + * Project home page: http://code.google.com/p/usb-serial-for-android/ + */ + +package com.hoho.android.usbserial.driver; + +import android.hardware.usb.UsbDevice; +import android.hardware.usb.UsbDeviceConnection; +import android.hardware.usb.UsbManager; + +/** + * Helper class to assist in detecting and building {@link UsbSerialDriver} + * instances from available hardware. + * + * @author mike wakerly (opensource@hoho.com) + */ +public enum UsbSerialProber { + + /** + * Prober for {@link FtdiSerialDriver}. + * + * @see FtdiSerialDriver + */ + FTDI_SERIAL { + @Override + public UsbSerialDriver getDevice(final UsbManager manager, final UsbDevice usbDevice) { + if (!FtdiSerialDriver.probe(usbDevice)) { + return null; + } + final UsbDeviceConnection connection = manager.openDevice(usbDevice); + if (connection == null) { + return null; + } + return new FtdiSerialDriver(usbDevice, connection); + } + }; + + /** + * Builds a new {@link UsbSerialDriver} instance from the raw device, or + * returns null if it could not be built (for example, if the + * probe failed). + * + * @param manager the {@link UsbManager} to use + * @param usbDevice the raw {@link UsbDevice} to use + * @return the first available {@link UsbSerialDriver}, or {@code null} if + * no devices could be acquired + */ + public abstract UsbSerialDriver getDevice(final UsbManager manager, final UsbDevice usbDevice); + + /** + * Acquires and returns the first available serial device among all + * available {@link UsbDevice}s, or returns {@code null} if no device could + * be acquired. + * + * @param usbManager the {@link UsbManager} to use + * @return the first available {@link UsbSerialDriver}, or {@code null} if + * no devices could be acquired + */ + public static UsbSerialDriver acquire(final UsbManager usbManager) { + for (final UsbDevice usbDevice : usbManager.getDeviceList().values()) { + final UsbSerialDriver probedDevice = acquire(usbManager, usbDevice); + if (probedDevice != null) { + return probedDevice; + } + } + return null; + } + + /** + * Builds and returns a new {@link UsbSerialDriver} from the given + * {@link UsbDevice}, or returns {@code null} if no drivers supported this + * device. + * + * @param usbManager the {@link UsbManager} to use + * @param usbDevice the {@link UsbDevice} to use + * @return a new {@link UsbSerialDriver}, or {@code null} if no devices + * could be acquired + */ + public static UsbSerialDriver acquire(final UsbManager usbManager, final UsbDevice usbDevice) { + for (final UsbSerialProber prober : values()) { + final UsbSerialDriver probedDevice = prober.getDevice(usbManager, usbDevice); + if (probedDevice != null) { + return probedDevice; + } + } + return null; + } + +} diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialRuntimeException.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialRuntimeException.java new file mode 100644 index 0000000..b48607c --- /dev/null +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/driver/UsbSerialRuntimeException.java @@ -0,0 +1,46 @@ +/* + * Copyright 2011 Google Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + */ + +package com.hoho.android.usbserial.driver; + +/** + * Generic unchecked exception for the usbserial package. + * + * @author mike wakerly (opensource@hoho.com) + */ +@SuppressWarnings("serial") +public class UsbSerialRuntimeException extends RuntimeException { + + public UsbSerialRuntimeException() { + super(); + } + + public UsbSerialRuntimeException(String detailMessage, Throwable throwable) { + super(detailMessage, throwable); + } + + public UsbSerialRuntimeException(String detailMessage) { + super(detailMessage); + } + + public UsbSerialRuntimeException(Throwable throwable) { + super(throwable); + } + +} diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/util/HexDump.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/util/HexDump.java new file mode 100644 index 0000000..a6c5e62 --- /dev/null +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/util/HexDump.java @@ -0,0 +1,149 @@ +/* + * Copyright (C) 2006 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.hoho.android.usbserial.util; + +/** + * Clone of Android's HexDump class, for use in debugging. Cosmetic changes + * only. + */ +public class HexDump { + private final static char[] HEX_DIGITS = { + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' + }; + + public static String dumpHexString(byte[] array) { + return dumpHexString(array, 0, array.length); + } + + public static String dumpHexString(byte[] array, int offset, int length) { + StringBuilder result = new StringBuilder(); + + byte[] line = new byte[16]; + int lineIndex = 0; + + result.append("\n0x"); + result.append(toHexString(offset)); + + for (int i = offset; i < offset + length; i++) { + if (lineIndex == 16) { + result.append(" "); + + for (int j = 0; j < 16; j++) { + if (line[j] > ' ' && line[j] < '~') { + result.append(new String(line, j, 1)); + } else { + result.append("."); + } + } + + result.append("\n0x"); + result.append(toHexString(i)); + lineIndex = 0; + } + + byte b = array[i]; + result.append(" "); + result.append(HEX_DIGITS[(b >>> 4) & 0x0F]); + result.append(HEX_DIGITS[b & 0x0F]); + + line[lineIndex++] = b; + } + + if (lineIndex != 16) { + int count = (16 - lineIndex) * 3; + count++; + for (int i = 0; i < count; i++) { + result.append(" "); + } + + for (int i = 0; i < lineIndex; i++) { + if (line[i] > ' ' && line[i] < '~') { + result.append(new String(line, i, 1)); + } else { + result.append("."); + } + } + } + + return result.toString(); + } + + public static String toHexString(byte b) { + return toHexString(toByteArray(b)); + } + + public static String toHexString(byte[] array) { + return toHexString(array, 0, array.length); + } + + public static String toHexString(byte[] array, int offset, int length) { + char[] buf = new char[length * 2]; + + int bufIndex = 0; + for (int i = offset; i < offset + length; i++) { + byte b = array[i]; + buf[bufIndex++] = HEX_DIGITS[(b >>> 4) & 0x0F]; + buf[bufIndex++] = HEX_DIGITS[b & 0x0F]; + } + + return new String(buf); + } + + public static String toHexString(int i) { + return toHexString(toByteArray(i)); + } + + public static byte[] toByteArray(byte b) { + byte[] array = new byte[1]; + array[0] = b; + return array; + } + + public static byte[] toByteArray(int i) { + byte[] array = new byte[4]; + + array[3] = (byte) (i & 0xFF); + array[2] = (byte) ((i >> 8) & 0xFF); + array[1] = (byte) ((i >> 16) & 0xFF); + array[0] = (byte) ((i >> 24) & 0xFF); + + return array; + } + + private static int toByte(char c) { + if (c >= '0' && c <= '9') + return (c - '0'); + if (c >= 'A' && c <= 'F') + return (c - 'A' + 10); + if (c >= 'a' && c <= 'f') + return (c - 'a' + 10); + + throw new RuntimeException("Invalid hex char '" + c + "'"); + } + + public static byte[] hexStringToByteArray(String hexString) { + int length = hexString.length(); + byte[] buffer = new byte[length / 2]; + + for (int i = 0; i < length; i += 2) { + buffer[i / 2] = (byte) ((toByte(hexString.charAt(i)) << 4) | toByte(hexString + .charAt(i + 1))); + } + + return buffer; + } +} diff --git a/UsbSerialLibrary/src/com/hoho/android/usbserial/util/SerialInputOutputManager.java b/UsbSerialLibrary/src/com/hoho/android/usbserial/util/SerialInputOutputManager.java new file mode 100644 index 0000000..829ac62 --- /dev/null +++ b/UsbSerialLibrary/src/com/hoho/android/usbserial/util/SerialInputOutputManager.java @@ -0,0 +1,181 @@ +/* Copyright 2011 Google Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA. + * + * Project home page: http://code.google.com/p/usb-serial-for-android/ + */ + +package com.hoho.android.usbserial.util; + +import android.hardware.usb.UsbRequest; +import android.util.Log; + +import com.hoho.android.usbserial.driver.UsbSerialDriver; + +import java.io.IOException; +import java.nio.ByteBuffer; + +/** + * Utility class which services a {@link UsbSerialDriver} in its {@link #run()} + * method. + * + * @author opensource@hoho.com (mike wakerly) + */ +public class SerialInputOutputManager implements Runnable { + + private static final String TAG = SerialInputOutputManager.class.getSimpleName(); + private static final boolean DEBUG = true; + + private static final int READ_WAIT_MILLIS = 200; + private static final int BUFSIZ = 4096; + + private final UsbSerialDriver mDriver; + + private final ByteBuffer mReadBuffer = ByteBuffer.allocate(BUFSIZ); + private final ByteBuffer mWriteBuffer = ByteBuffer.allocate(BUFSIZ); + + private enum State { + STOPPED, + RUNNING, + STOPPING + } + + // Synchronized by 'this' + private State mState = State.STOPPED; + + // Synchronized by 'this' + private Listener mListener; + + public interface Listener { + /** + * Called when new incoming data is available. + */ + public void onNewData(byte[] data); + + /** + * Called when {@link SerialInputOutputManager#run()} aborts due to an + * error. + */ + public void onRunError(Exception e); + } + + /** + * Creates a new instance with no listener. + */ + public SerialInputOutputManager(UsbSerialDriver driver) { + this(driver, null); + } + + /** + * Creates a new instance with the provided listener. + */ + public SerialInputOutputManager(UsbSerialDriver driver, Listener listener) { + mDriver = driver; + mListener = listener; + } + + public synchronized void setListener(Listener listener) { + mListener = listener; + } + + public synchronized Listener getListener() { + return mListener; + } + + public void writeAsync(byte[] data) { + mWriteBuffer.put(data); + } + + public synchronized void stop() { + if (getState() == State.RUNNING) { + Log.i(TAG, "Stop requested"); + mState = State.STOPPING; + } + } + + private synchronized State getState() { + return mState; + } + + /** + * Continuously services the read and write buffers until {@link #stop()} is + * called, or until a driver exception is raised. + * + * NOTE(mikey): Uses inefficient read/write-with-timeout. + * TODO(mikey): Read asynchronously with {@link UsbRequest#queue(ByteBuffer, int)} + */ + @Override + public void run() { + synchronized (this) { + if (getState() != State.STOPPED) { + throw new IllegalStateException("Already running."); + } + mState = State.RUNNING; + } + + Log.i(TAG, "Running .."); + try { + while (true) { + if (getState() != State.RUNNING) { + Log.i(TAG, "Stopping mState=" + getState()); + break; + } + step(); + } + } catch (Exception e) { + Log.w(TAG, "Run ending due to exception: " + e.getMessage(), e); + final Listener listener = getListener(); + if (listener != null) { + listener.onRunError(e); + } + } finally { + synchronized (this) { + mState = State.STOPPED; + Log.i(TAG, "Stopped."); + } + } + } + + private void step() throws IOException { + // Handle incoming data. + int len = mDriver.read(mReadBuffer.array(), READ_WAIT_MILLIS); + if (len > 0) { + if (DEBUG) Log.d(TAG, "Read data len=" + len); + final Listener listener = getListener(); + if (listener != null) { + final byte[] data = new byte[len]; + mReadBuffer.get(data, 0, len); + listener.onNewData(data); + } + mReadBuffer.clear(); + } + + // Handle outgoing data. + if (mWriteBuffer.position() > 0) { + final byte[] outBuff; + synchronized (mWriteBuffer) { + len = mWriteBuffer.position(); + outBuff = new byte[len]; + mWriteBuffer.get(outBuff, 0, len); + mWriteBuffer.clear(); + } + if (DEBUG) + Log.d(TAG, "Writing data len=" + len); + mDriver.write(outBuff, READ_WAIT_MILLIS); + } + } + +}