├── .gitignore ├── AndroidOpenAccessoryBridge ├── .idea │ ├── .name │ ├── compiler.xml │ ├── copyright │ │ └── profiles_settings.xml │ ├── encodings.xml │ ├── gradle.xml │ ├── modules.xml │ ├── scopes │ │ └── scope_settings.xml │ └── vcs.xml ├── AndroidOpenAccessoryBridge.iml ├── build.gradle ├── demo │ ├── build.gradle │ ├── demo.iml │ └── src │ │ └── main │ │ ├── AndroidManifest.xml │ │ ├── java │ │ └── com │ │ │ └── covertbagel │ │ │ └── androidopenaccessorybridge │ │ │ └── demo │ │ │ └── MainActivity.java │ │ └── res │ │ ├── layout │ │ └── activity_main.xml │ │ ├── values │ │ └── strings.xml │ │ └── xml │ │ └── accessory_filter.xml ├── gradle │ └── wrapper │ │ ├── gradle-wrapper.jar │ │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── library │ ├── build.gradle │ ├── library.iml │ └── src │ │ └── main │ │ ├── AndroidManifest.xml │ │ └── java │ │ └── com │ │ └── covertbagel │ │ └── androidopenaccessorybridge │ │ ├── AndroidOpenAccessoryBridge.java │ │ └── BufferHolder.java └── settings.gradle ├── LICENSE ├── README.md └── android_open_accessory_bridge.py /.gitignore: -------------------------------------------------------------------------------- 1 | *.pyc 2 | __pycache__/ 3 | .gradle/ 4 | build/ 5 | local.properties 6 | AndroidOpenAccessoryBridge/.idea/libraries/ 7 | AndroidOpenAccessoryBridge/.idea/misc.xml 8 | AndroidOpenAccessoryBridge/.idea/tasks.xml 9 | AndroidOpenAccessoryBridge/.idea/workspace.xml 10 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/.name: -------------------------------------------------------------------------------- 1 | AndroidOpenAccessoryBridge -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/copyright/profiles_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/encodings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 19 | 20 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/scopes/scope_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 5 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/AndroidOpenAccessoryBridge.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | repositories { 3 | jcenter() 4 | } 5 | 6 | dependencies { 7 | classpath 'com.android.tools.build:gradle:1.0.0' 8 | classpath 'com.github.dcendents:android-maven-plugin:1.2' 9 | classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.0' 10 | } 11 | } 12 | 13 | allprojects { 14 | repositories { 15 | jcenter() 16 | } 17 | } 18 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 22 5 | buildToolsVersion '22.0.1' 6 | 7 | defaultConfig { 8 | applicationId 'com.covertbagel.androidopenaccessorybridge.demo' 9 | minSdkVersion 21 10 | targetSdkVersion 22 11 | versionCode 1 12 | versionName '1.0' 13 | } 14 | 15 | compileOptions { 16 | sourceCompatibility JavaVersion.VERSION_1_7 17 | targetCompatibility JavaVersion.VERSION_1_7 18 | } 19 | } 20 | 21 | dependencies { 22 | compile project(':library') 23 | } 24 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/demo.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 19 | 20 | 23 | 24 | 27 | 28 | 32 | 33 | 34 | 35 | 36 | 37 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/src/main/java/com/covertbagel/androidopenaccessorybridge/demo/MainActivity.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2015 Christopher Blay 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.covertbagel.androidopenaccessorybridge.demo; 18 | 19 | import android.app.Activity; 20 | import android.os.Bundle; 21 | import android.widget.TextView; 22 | 23 | import com.covertbagel.androidopenaccessorybridge.AndroidOpenAccessoryBridge; 24 | import com.covertbagel.androidopenaccessorybridge.BufferHolder; 25 | 26 | public class MainActivity extends Activity implements AndroidOpenAccessoryBridge.Listener { 27 | 28 | private AndroidOpenAccessoryBridge mAoab; 29 | private TextView mTextView; 30 | 31 | @Override 32 | protected void onCreate(final Bundle savedInstanceState) { 33 | super.onCreate(savedInstanceState); 34 | setContentView(R.layout.activity_main); 35 | mAoab = new AndroidOpenAccessoryBridge(this, this); 36 | mTextView = (TextView) findViewById(R.id.text_view); 37 | } 38 | 39 | @Override 40 | protected void onDestroy() { 41 | super.onDestroy(); 42 | mAoab = null; 43 | } 44 | 45 | // AndroidOpenAccessoryBridge.Listener 46 | 47 | @Override 48 | public void onAoabRead(final BufferHolder bufferHolder) { 49 | try { 50 | final int value = Integer.parseInt(bufferHolder.toString()); 51 | runOnUiThread(new Runnable() { 52 | @Override 53 | public void run() { 54 | mTextView.setText(String.valueOf(value)); 55 | } 56 | }); 57 | } catch (NumberFormatException exception) { 58 | return; 59 | } 60 | if (mAoab != null) { 61 | mAoab.write(bufferHolder); 62 | } 63 | } 64 | 65 | @Override 66 | public void onAoabShutdown() { 67 | runOnUiThread(new Runnable() { 68 | @Override 69 | public void run() { 70 | finish(); 71 | } 72 | }); 73 | } 74 | 75 | } 76 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 23 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 18 | Android Open Accessory Bridge 19 | 20 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/demo/src/main/res/xml/accessory_filter.xml: -------------------------------------------------------------------------------- 1 | 2 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/chris-blay/android-open-accessory-bridge/53862a00b1aaea853f60ff67cd374aeb93131a6a/AndroidOpenAccessoryBridge/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sun Apr 19 15:44:03 PDT 2015 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip 7 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # For Cygwin, ensure paths are in UNIX format before anything is touched. 46 | if $cygwin ; then 47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 48 | fi 49 | 50 | # Attempt to set APP_HOME 51 | # Resolve links: $0 may be a link 52 | PRG="$0" 53 | # Need this for relative symlinks. 54 | while [ -h "$PRG" ] ; do 55 | ls=`ls -ld "$PRG"` 56 | link=`expr "$ls" : '.*-> $.*$$'` 57 | if expr "$link" : '/.*' > /dev/null; then 58 | PRG="$link" 59 | else 60 | PRG=`dirname "$PRG"`"/$link" 61 | fi 62 | done 63 | SAVED="`pwd`" 64 | cd "`dirname \"$PRG\"`/" >&- 65 | APP_HOME="`pwd -P`" 66 | cd "$SAVED" >&- 67 | 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 69 | 70 | # Determine the Java command to use to start the JVM. 71 | if [ -n "$JAVA_HOME" ] ; then 72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 73 | # IBM's JDK on AIX uses strange locations for the executables 74 | JAVACMD="$JAVA_HOME/jre/sh/java" 75 | else 76 | JAVACMD="$JAVA_HOME/bin/java" 77 | fi 78 | if [ ! -x "$JAVACMD" ] ; then 79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 80 | 81 | Please set the JAVA_HOME variable in your environment to match the 82 | location of your Java installation." 83 | fi 84 | else 85 | JAVACMD="java" 86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 87 | 88 | Please set the JAVA_HOME variable in your environment to match the 89 | location of your Java installation." 90 | fi 91 | 92 | # Increase the maximum file descriptors if we can. 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 94 | MAX_FD_LIMIT=`ulimit -H -n` 95 | if [ $? -eq 0 ] ; then 96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 97 | MAX_FD="$MAX_FD_LIMIT" 98 | fi 99 | ulimit -n $MAX_FD 100 | if [ $? -ne 0 ] ; then 101 | warn "Could not set maximum file descriptor limit: $MAX_FD" 102 | fi 103 | else 104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 105 | fi 106 | fi 107 | 108 | # For Darwin, add options to specify how the application appears in the dock 109 | if $darwin; then 110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 111 | fi 112 | 113 | # For Cygwin, switch paths to Windows format before running java 114 | if $cygwin ; then 115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/library/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'com.github.dcendents.android-maven' 3 | apply plugin: 'com.jfrog.bintray' 4 | 5 | group = 'com.covertbagel.androidopenaccessorybridge' 6 | version = '1.1' 7 | 8 | android { 9 | compileSdkVersion 22 10 | buildToolsVersion '22.0.1' 11 | 12 | defaultConfig { 13 | minSdkVersion 21 14 | targetSdkVersion 22 15 | versionCode 1 16 | versionName version 17 | } 18 | 19 | compileOptions { 20 | sourceCompatibility JavaVersion.VERSION_1_7 21 | targetCompatibility JavaVersion.VERSION_1_7 22 | } 23 | } 24 | 25 | install { 26 | repositories.mavenInstaller { 27 | pom { 28 | project { 29 | packaging 'aar' 30 | name 'android-open-accessory-bridge' 31 | url 'https://github.com/chris-blay/android-open-accessory-bridge' 32 | 33 | licenses { 34 | license { 35 | name 'Apache License, Version 2.0' 36 | url 'http://www.apache.org/licenses/LICENSE-2.0' 37 | } 38 | } 39 | } 40 | } 41 | } 42 | } 43 | 44 | task sourcesJar(type: Jar) { 45 | classifier = 'sources' 46 | from android.sourceSets.main.java.srcDirs 47 | } 48 | 49 | task javadoc(type: Javadoc) { 50 | source = android.sourceSets.main.java.srcDirs 51 | classpath += project.files(android.getBootClasspath().join(File.pathSeparator)) 52 | } 53 | 54 | task javadocJar(type: Jar, dependsOn: javadoc) { 55 | classifier = 'javadoc' 56 | from javadoc.destinationDir 57 | } 58 | 59 | artifacts { 60 | archives sourcesJar 61 | archives javadocJar 62 | } 63 | 64 | // Bintray Upload 65 | 66 | Properties properties = new Properties() 67 | properties.load(project.rootProject.file('local.properties').newDataInputStream()) 68 | 69 | bintray { 70 | user = properties.getProperty('bintray.user') 71 | key = properties.getProperty('bintray.key') 72 | configurations = ['archives'] 73 | 74 | pkg { 75 | repo = 'maven' 76 | name = 'android-open-accessory-bridge' 77 | websiteUrl = 'https://github.com/chris-blay/android-open-accessory-bridge' 78 | licenses = ['Apache-2.0'] 79 | publish = true 80 | } 81 | } 82 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/library/library.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/library/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 5 | 6 | 7 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/library/src/main/java/com/covertbagel/androidopenaccessorybridge/AndroidOpenAccessoryBridge.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2015 Christopher Blay 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.covertbagel.androidopenaccessorybridge; 18 | 19 | import android.content.Context; 20 | import android.hardware.usb.UsbAccessory; 21 | import android.hardware.usb.UsbManager; 22 | import android.os.Handler; 23 | import android.os.Looper; 24 | import android.os.Message; 25 | import android.os.ParcelFileDescriptor; 26 | import android.util.Log; 27 | 28 | import java.io.Closeable; 29 | import java.io.FileDescriptor; 30 | import java.io.FileInputStream; 31 | import java.io.FileOutputStream; 32 | import java.io.IOException; 33 | 34 | public class AndroidOpenAccessoryBridge { 35 | 36 | private static final String TAG = AndroidOpenAccessoryBridge.class.getSimpleName(); 37 | private static final long CONNECT_COOLDOWN_MS = 100; 38 | private static final long READ_COOLDOWN_MS = 100; 39 | private Listener mListener; 40 | private UsbManager mUsbManager; 41 | private BufferHolder mReadBuffer; 42 | private InternalThread mInternalThread; 43 | private boolean mIsShutdown; 44 | private boolean mIsAttached; 45 | private FileOutputStream mOutputStream; 46 | private FileInputStream mInputStream; 47 | private ParcelFileDescriptor mParcelFileDescriptor; 48 | 49 | public AndroidOpenAccessoryBridge(final Context context, final Listener listener) { 50 | if (BuildConfig.DEBUG && (context == null || listener == null)) { 51 | throw new AssertionError("Arguments context and listener must not be null"); 52 | } 53 | mListener = listener; 54 | mUsbManager = (UsbManager) context.getSystemService(Context.USB_SERVICE); 55 | mReadBuffer = new BufferHolder(); 56 | mInternalThread = new InternalThread(); 57 | mInternalThread.start(); 58 | } 59 | 60 | public synchronized boolean write(final BufferHolder bufferHolder) { 61 | if (BuildConfig.DEBUG && (mIsShutdown || mOutputStream == null)) { 62 | throw new AssertionError("Can't write if shutdown or output stream is null"); 63 | } 64 | try { 65 | return bufferHolder.write(mOutputStream); 66 | } catch (IOException exception) { 67 | mInternalThread.terminate(); 68 | return false; 69 | } 70 | } 71 | 72 | private class InternalThread extends Thread { 73 | 74 | private static final int STOP_THREAD = 1; 75 | private static final int MAYBE_READ = 2; 76 | 77 | private Handler mHandler; 78 | 79 | @Override 80 | public void run() { 81 | Looper.prepare(); 82 | mHandler = new Handler() { 83 | @Override 84 | public void handleMessage(Message msg) { 85 | switch (msg.what) { 86 | case STOP_THREAD: 87 | Looper.myLooper().quit(); 88 | break; 89 | case MAYBE_READ: 90 | final boolean readResult; 91 | try { 92 | readResult = mReadBuffer.read(mInputStream); 93 | } catch (IOException exception) { 94 | terminate(); 95 | break; 96 | } 97 | if (readResult) { 98 | if (mReadBuffer.size == 0) { 99 | mHandler.sendEmptyMessage(STOP_THREAD); 100 | } else { 101 | mListener.onAoabRead(mReadBuffer); 102 | mReadBuffer.reset(); 103 | mHandler.sendEmptyMessage(MAYBE_READ); 104 | } 105 | } else { 106 | mHandler.sendEmptyMessageDelayed(MAYBE_READ, READ_COOLDOWN_MS); 107 | } 108 | break; 109 | } 110 | } 111 | }; 112 | detectAccessory(); 113 | Looper.loop(); 114 | detachAccessory(); 115 | mIsShutdown = true; 116 | mListener.onAoabShutdown(); 117 | 118 | // Clean stuff up 119 | mHandler = null; 120 | mListener = null; 121 | mUsbManager = null; 122 | mReadBuffer = null; 123 | mInternalThread = null; 124 | } 125 | 126 | void terminate() { 127 | mHandler.sendEmptyMessage(STOP_THREAD); 128 | } 129 | 130 | private void detectAccessory() { 131 | while (!mIsAttached) { 132 | if (mIsShutdown) { 133 | mHandler.sendEmptyMessage(STOP_THREAD); 134 | return; 135 | } 136 | try { 137 | Thread.sleep(CONNECT_COOLDOWN_MS); 138 | } catch (InterruptedException exception) { 139 | // pass 140 | } 141 | final UsbAccessory[] accessoryList = mUsbManager.getAccessoryList(); 142 | if (accessoryList == null || accessoryList.length == 0) { 143 | continue; 144 | } 145 | if (accessoryList.length > 1) { 146 | Log.w(TAG, "Multiple accessories attached!? Using first one..."); 147 | } 148 | maybeAttachAccessory(accessoryList[0]); 149 | } 150 | } 151 | 152 | private void maybeAttachAccessory(final UsbAccessory accessory) { 153 | final ParcelFileDescriptor parcelFileDescriptor = mUsbManager.openAccessory(accessory); 154 | if (parcelFileDescriptor != null) { 155 | final FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor(); 156 | mIsAttached = true; 157 | mOutputStream = new FileOutputStream(fileDescriptor); 158 | mInputStream = new FileInputStream(fileDescriptor); 159 | mParcelFileDescriptor = parcelFileDescriptor; 160 | mHandler.sendEmptyMessage(MAYBE_READ); 161 | } 162 | } 163 | 164 | private void detachAccessory() { 165 | if (mIsAttached) { 166 | mIsAttached = false; 167 | } 168 | if (mInputStream != null) { 169 | closeQuietly(mInputStream); 170 | mInputStream = null; 171 | } 172 | if (mOutputStream != null) { 173 | closeQuietly(mOutputStream); 174 | mOutputStream = null; 175 | } 176 | if (mParcelFileDescriptor != null) { 177 | closeQuietly(mParcelFileDescriptor); 178 | mParcelFileDescriptor = null; 179 | } 180 | } 181 | 182 | private void closeQuietly(Closeable closable) { 183 | try { 184 | closable.close(); 185 | } catch (IOException exception) { 186 | // pass 187 | } 188 | } 189 | 190 | } 191 | 192 | public interface Listener { 193 | void onAoabRead(BufferHolder bufferHolder); 194 | void onAoabShutdown(); 195 | } 196 | 197 | } 198 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/library/src/main/java/com/covertbagel/androidopenaccessorybridge/BufferHolder.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2015 Christopher Blay 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | package com.covertbagel.androidopenaccessorybridge; 18 | 19 | import android.system.ErrnoException; 20 | import android.system.OsConstants; 21 | import android.util.Log; 22 | 23 | import java.io.FileInputStream; 24 | import java.io.FileOutputStream; 25 | import java.io.IOException; 26 | import java.nio.ByteBuffer; 27 | 28 | public class BufferHolder { 29 | 30 | private static final String TAG = BufferHolder.class.getSimpleName(); 31 | private final byte[] mSizeBytes; 32 | public final ByteBuffer buffer; 33 | public int size; 34 | 35 | public BufferHolder() { 36 | mSizeBytes = new byte[2]; 37 | buffer = ByteBuffer.allocate(0xffff); 38 | } 39 | 40 | public void reset() { 41 | buffer.clear(); 42 | size = 0; 43 | } 44 | 45 | @Override 46 | public String toString() { 47 | return new String(buffer.array(), 0, size); 48 | } 49 | 50 | boolean read(final FileInputStream inputStream) throws IOException { 51 | if (size <= 0) { 52 | final int bytesRead; 53 | try { 54 | bytesRead = inputStream.read(mSizeBytes); 55 | } catch (IOException exception) { 56 | if (ioExceptionIsNoSuchDevice(exception)) { 57 | throw exception; 58 | } 59 | Log.d(TAG, "IOException while reading size bytes", exception); 60 | return false; 61 | } 62 | if (bytesRead != mSizeBytes.length) { 63 | Log.d(TAG, "Incorrect number of bytes read while reading size bytes:" 64 | + " actual=" + bytesRead + " expected=" + mSizeBytes.length); 65 | return false; 66 | } 67 | size = readSizeBytes(); 68 | } 69 | final int bytesRead; 70 | try { 71 | bytesRead = inputStream.read(buffer.array(), 0, size); 72 | } catch (IOException exception) { 73 | if (ioExceptionIsNoSuchDevice(exception)) { 74 | throw exception; 75 | } 76 | Log.d(TAG, "IOException while reading data bytes", exception); 77 | return false; 78 | } 79 | if (bytesRead != size) { 80 | Log.d(TAG, "Incorrect number of bytes read while reading data bytes:" 81 | + " actual=" + bytesRead + " expected=" + size); 82 | return false; 83 | } 84 | return true; 85 | } 86 | 87 | boolean write(final FileOutputStream outputStream) throws IOException { 88 | writeSizeBytes(size); 89 | try { 90 | outputStream.write(mSizeBytes); 91 | outputStream.write(buffer.array(), 0, size); 92 | outputStream.flush(); 93 | return true; 94 | } catch (IOException exception) { 95 | if (ioExceptionIsNoSuchDevice(exception)) { 96 | throw exception; 97 | } 98 | Log.d(TAG, "IOException while writing size+data bytes", exception); 99 | return false; 100 | } 101 | } 102 | 103 | private int readSizeBytes() { 104 | return ((mSizeBytes[0] & 0xff) << 8) | (mSizeBytes[1] & 0xff); 105 | } 106 | 107 | private void writeSizeBytes(final int value) { 108 | if (BuildConfig.DEBUG && (value <= 0 || value > 0xffff)) { 109 | throw new AssertionError("Size value out of bounds: " + value); 110 | } 111 | mSizeBytes[0] = (byte) ((value & 0xff00) >> 8); 112 | mSizeBytes[1] = (byte) (value & 0x00ff); 113 | } 114 | 115 | private boolean ioExceptionIsNoSuchDevice(IOException ioException) { 116 | final Throwable cause = ioException.getCause(); 117 | if (cause instanceof ErrnoException) { 118 | final ErrnoException errnoException = (ErrnoException) cause; 119 | return errnoException.errno == OsConstants.ENODEV; 120 | } 121 | return false; 122 | } 123 | 124 | } 125 | -------------------------------------------------------------------------------- /AndroidOpenAccessoryBridge/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':demo', ':library' 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | android-open-accessory-bridge 2 | ============================= 3 | 4 | A USB communication bridge using Android Open Accessory Protocol. Allows sending of messages between a Python script running on a PC and Android activity running on an Android device. 5 | 6 | Includes a simple "ping-pong" test for Nexus 4. Just install the Android application and then run the Python script. When the script starts the application will launch and they'll send tiny incremental messages back and forth. When you stop the Python script the Android application closes - it's that easy! 7 | 8 | Python script requires pyusb at http://sourceforge.net/apps/trac/pyusb/ 9 | 10 | My goal in writing this was to make my Nexus 4 into a sensor for a Raspberry Pi. Raspberry Pi doesn't have ADB and Nexus 4 can't easily use USB-OTG so AOAP is the only way to communicate. 11 | -------------------------------------------------------------------------------- /android_open_accessory_bridge.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/python3 2 | # coding=utf-8 3 | 4 | # Copyright 2015 Christopher Blay 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # http://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | 18 | from __future__ import print_function, unicode_literals 19 | 20 | import array 21 | import sys 22 | import time 23 | import usb 24 | 25 | 26 | NEXUS4_USB_IDS = (0x18d1, 0x4ee2, 0x2d01) 27 | _B = 'B' if sys.version_info.major == 3 else b'B' 28 | 29 | 30 | class AndroidOpenAccessoryBridge: 31 | 32 | def __init__(self, 33 | vendor_id, unconfigured_product_id, configured_product_id, 34 | manufacturer, model, description, version, uri, serial): 35 | self._vendor_id = int(vendor_id) 36 | self._unconfigured_product_id = int(unconfigured_product_id) 37 | self._configured_product_id = int(configured_product_id) 38 | self._device = self._configureAndOpenDevice( 39 | str(manufacturer), 40 | str(model), 41 | str(description), 42 | str(version), 43 | str(uri), 44 | str(serial)) 45 | self._endpoint_out, self._endpoint_in = self._detectEndpoints() 46 | 47 | def __enter__(self): 48 | return self # All 'enter' work is done in __init__(). 49 | 50 | def __exit__(self, type, value, traceback): 51 | self.close() 52 | 53 | def _detectDevice(self, attempts_left=5): 54 | unconfigured_device = usb.core.find( 55 | idVendor=self._vendor_id, idProduct=self._unconfigured_product_id) 56 | configured_device = usb.core.find( 57 | idVendor=self._vendor_id, idProduct=self._configured_product_id) 58 | if configured_device: 59 | return configured_device, True 60 | elif unconfigured_device: 61 | return unconfigured_device, False 62 | elif attempts_left: 63 | time.sleep(1) 64 | return self._detectDevice(attempts_left - 1) 65 | else: 66 | raise usb.core.USBError('Device not connected') 67 | 68 | def _configureAndOpenDevice( 69 | self, manufacturer, model, description, version, uri, serial): 70 | device, is_configured = self._detectDevice() 71 | if not is_configured: 72 | # Validate version code. 73 | buf = device.ctrl_transfer(0xc0, 51, data_or_wLength=2) 74 | assert(len(buf) == 2 and (buf[0] | buf[1] << 8) == 2) 75 | # Send accessory information. 76 | for i, data in enumerate( 77 | (manufacturer, model, description, version, uri, serial)): 78 | assert(device.ctrl_transfer( 79 | 0x40, 52, wIndex=i, data_or_wLength=data) == len(data)) 80 | # Put device into accessory mode. 81 | assert(device.ctrl_transfer(0x40, 53) == 0) 82 | usb.util.dispose_resources(device) 83 | else: 84 | # This brings your companion app back to foreground. 85 | device.reset() 86 | time.sleep(1) 87 | 88 | # Wait for configured device to show up 89 | attempts_left = 5 90 | while attempts_left: 91 | device, is_configured = self._detectDevice() 92 | if is_configured: 93 | return device 94 | time.sleep(1) 95 | attempts_left -= 1 96 | raise usb.core.USBError('Device not configured') 97 | 98 | def _detectEndpoints(self): 99 | assert(self._device) 100 | configuration = self._device.get_active_configuration() 101 | interface = configuration[(0, 0)] 102 | 103 | def first_out_endpoint(endpoint): 104 | return (usb.util.endpoint_direction(endpoint.bEndpointAddress) 105 | == usb.util.ENDPOINT_OUT) 106 | 107 | def first_in_endpoint(endpoint): 108 | return (usb.util.endpoint_direction(endpoint.bEndpointAddress) 109 | == usb.util.ENDPOINT_IN) 110 | 111 | endpoint_out = usb.util.find_descriptor( 112 | interface, custom_match=first_out_endpoint) 113 | endpoint_in = usb.util.find_descriptor( 114 | interface, custom_match=first_in_endpoint) 115 | assert(endpoint_out and endpoint_in) 116 | return endpoint_out, endpoint_in 117 | 118 | def write(self, data, timeout=None): 119 | assert(self._device and self._endpoint_out and data) 120 | size = len(data) 121 | size_bytes = array.array(_B, [ 122 | (size & 0x0000ff00) >> 8, 123 | (size & 0x000000ff)]) 124 | data_bytes = array.array(_B, data) 125 | while True: 126 | try: 127 | bytes_wrote = self._endpoint_out.write(size_bytes, 128 | timeout=timeout) 129 | except usb.core.USBError as e: 130 | if e.errno == 110: # Operation timed out 131 | continue 132 | else: 133 | raise e 134 | else: 135 | assert(bytes_wrote == 2) 136 | break 137 | assert(self._endpoint_out.write(data_bytes, timeout=timeout) == size) 138 | 139 | def read(self, timeout=None): 140 | assert(self._device and self._endpoint_in) 141 | try: 142 | size_bytes = self._endpoint_in.read(2, timeout=timeout) 143 | size = (size_bytes[0] << 8) | size_bytes[1] 144 | return self._endpoint_in.read(size, timeout=timeout).tostring() 145 | except usb.core.USBError as e: 146 | if e.errno == 110: # Operation timed out. 147 | return None 148 | else: 149 | raise e 150 | 151 | def close(self): 152 | assert(self._device and self._endpoint_out) 153 | self._endpoint_out.write(array.array(_B, [0, 0])) 154 | usb.util.dispose_resources(self._device) 155 | self._device = None 156 | self._endpoint_out = None 157 | self._endpoint_in = None 158 | 159 | 160 | if __name__ == '__main__': 161 | from signal import signal, SIGTERM, SIGINT 162 | shutdown = False 163 | 164 | def signal_handler(signal, frame): 165 | global shutdown 166 | shutdown = True 167 | for signum in (SIGTERM, SIGINT): 168 | signal(signum, signal_handler) 169 | 170 | while not shutdown: 171 | try: 172 | with AndroidOpenAccessoryBridge( 173 | *NEXUS4_USB_IDS, 174 | manufacturer='AoabManufacturer', 175 | model='AoabModel', 176 | description='AoabDescription', 177 | version=1, 178 | uri=('https://github.com/chris-blay/' 179 | 'android-open-accessory-bridge'), 180 | serial='AoabSerial') as aoab: 181 | aoab.write('0'.encode('utf-8')) 182 | while not shutdown: 183 | bytes = aoab.read() 184 | if bytes: 185 | value = int(bytes.decode('utf-8')) 186 | print('Read in value: {}'.format(value)) 187 | aoab.write(str(value + 1).encode('utf-8')) 188 | except usb.core.USBError: 189 | print('USBError occurred. Restarting…') 190 | --------------------------------------------------------------------------------