File list (Check if you may need any files):
AndroidStudio_USB_ADC_Pulsesensor\USB_ADC_Pulsesensor\.gitignore
.................................\...................\build.gradle
.................................\...................\gradle.properties
.................................\...................\gradlew
.................................\...................\gradlew.bat
.................................\...................\local.properties
.................................\...................\settings.gradle
.................................\...................\USB_ADC_Pulsesensor.iml
.................................\...................\.gradle\2.2.1\taskArtifacts\cache.properties
.................................\...................\.......\.....\.............\cache.properties.lock
.................................\...................\.......\.....\.............\fileHashes.bin
.................................\...................\.......\.....\.............\fileSnapshots.bin
.................................\...................\.......\.....\.............\outputFileStates.bin
.................................\...................\.......\.....\.............\taskArtifacts.bin
.................................\...................\.idea\.name
.................................\...................\.....\compiler.xml
.................................\...................\.....\encodings.xml
.................................\...................\.....\gradle.xml
.................................\...................\.....\misc.xml
.................................\...................\.....\modules.xml
.................................\...................\.....\vcs.xml
.................................\...................\.....\workspace.xml
.................................\...................\.....\copyright\profiles_settings.xml
.................................\...................\.....\scopes\scope_settings.xml
.................................\...................\app\.gitignore
.................................\...................\...\app.iml
.................................\...................\...\build.gradle
.................................\...................\...\proguard-rules.pro
.................................\...................\...\libs\ginkgo_driver.jar
.................................\...................\...\src\androidTest\java\com\viewtool\wdluo\usb_adc_pulsesensor\ApplicationTest.java
.................................\...................\...\...\main\AndroidManifest.xml
.................................\...................\...\...\....\java\com\viewtool\wdluo\usb_adc_pulsesensor\fft.java
.................................\...................\...\...\....\....\...\........\.....\...................\MainActivity.java
.................................\...................\...\...\....\....\...\........\.....\...................\WaveSurfaceView.java
.................................\...................\...\...\....\res\layout\activity_main.xml
.................................\...................\...\...\....\...\menu\menu_main.xml
.................................\...................\...\...\....\...\.ipmap-hdpi\ic_launcher.png
.................................\...................\...\...\....\...\.......mdpi\ic_launcher.png
.................................\...................\...\...\....\...\.......xhdpi\ic_launcher.png
.................................\...................\...\...\....\...\........xhdpi\ic_launcher.png
.................................\...................\...\...\....\...\values\dimens.xml
.................................\...................\...\...\....\...\......\strings.xml
.................................\...................\...\...\....\...\......\styles.xml
.................................\...................\...\...\....\...\......-w820dp\dimens.xml
.................................\...................\gradle\wrapper\gradle-wrapper.jar
.................................\...................\......\.......\gradle-wrapper.properties