According to google the serial code to modify a simple serial read and write source code, android2.2 project.

serial_src_google\SerialTest\.classpath
.................\..........\.project
.................\..........\AndroidManifest.xml
.................\..........\bin\android_serialport_api\.svn\all-wcprops
.................\..........\...\......................\....\entries
.................\..........\...\......................\....\text-base\SerialPort.java.svn-base
.................\..........\...\......................\....\.........\SerialPortFinder.java.svn-base
.................\..........\...\......................\sample\.svn\all-wcprops
.................\..........\...\......................\......\....\entries
.................\..........\...\......................\......\....\text-base\Application.java.svn-base
.................\..........\...\......................\......\....\.........\ConsoleActivity.java.svn-base
.................\..........\...\......................\......\....\.........\LoopbackActivity.java.svn-base
.................\..........\...\......................\......\....\.........\MainMenu.java.svn-base
.................\..........\...\......................\......\....\.........\Sending01010101Activity.java.svn-base
.................\..........\...\......................\......\....\.........\SerialPortActivity.java.svn-base
.................\..........\...\......................\......\....\.........\SerialPortPreferences.java.svn-base
.................\..........\...\......................\......\Application.class
.................\..........\...\......................\......\ConsoleActivity$1.class
.................\..........\...\......................\......\ConsoleActivity$2.class
.................\..........\...\......................\......\ConsoleActivity.class
.................\..........\...\......................\......\LoopbackActivity$SendingThread$1.class
.................\..........\...\......................\......\LoopbackActivity$SendingThread.class
.................\..........\...\......................\......\LoopbackActivity.class
.................\..........\...\......................\......\MainMenu$1.class
.................\..........\...\......................\......\MainMenu$2.class
.................\..........\...\......................\......\MainMenu$3.class
.................\..........\...\......................\......\MainMenu$4.class
.................\..........\...\......................\......\MainMenu$5.class
.................\..........\...\......................\......\MainMenu$6.class
.................\..........\...\......................\......\MainMenu.class
.................\..........\...\......................\......\R$array.class
.................\..........\...\......................\......\R$attr.class
.................\..........\...\......................\......\R$drawable.class
.................\..........\...\......................\......\R$id.class
.................\..........\...\......................\......\R$layout.class
.................\..........\...\......................\......\R$string.class
.................\..........\...\......................\......\R$xml.class
.................\..........\...\......................\......\R.class
.................\..........\...\......................\......\Sending01010101Activity$SendingThread.class
.................\..........\...\......................\......\Sending01010101Activity.class
.................\..........\...\......................\......\SerialPortActivity$1.class
.................\..........\...\......................\......\SerialPortActivity$ReadThread.class
.................\..........\...\......................\......\SerialPortActivity.class
.................\..........\...\......................\......\SerialPortPreferences$1.class
.................\..........\...\......................\......\SerialPortPreferences$2.class
.................\..........\...\......................\......\SerialPortPreferences.class
.................\..........\...\......................\SerialPort.class
.................\..........\...\......................\SerialPortFinder$Driver.clas

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