usb-otg

Suppose I have a USB-powered LED lamp connected through a USB OTG adapter to a Toshiba Excite 10 tablet running Android 4.0.3, which provides the power. I want to programmatically turn the USB OTG host port's power pins on and off from an app. (Ideally without root, but I'll take what I can get). Any ideas? You must have write permission on /sys directory. Rooting makes the process very easy. Just root your device and issue the right echo command to toggle kernel status bits like : String[] command = { "/system/bin/sh", "-c", "echo xxx > /sys/bus/usb/devices/usb3/power/level", }; Runtime

I have an external mass storage device connected to an Android device. There are several .BIN files in the root directory that I need to read into my app. I am able to connect to the device and receive usb permission using UsbDeviceConnection. private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String output = outputTV.getText().toString(); String action = intent.getAction(); outputTV.setText(outputTV.getText() + "\n" + " ACTION: " + action); if (ACTION_USB_PERMISSION.equals(action)) { synchronized (this) {

I am developing an Android application in which I have to get details of USB device connected to Tablet via OTG . when I use sys/bus/usb0/devices then I am getting list of all devices of Tablet while I want to only fetch device name attached via OTG port . Is there ant way to get which device is in built and which device is connected to Tablet. When I used path /storage/usb0/ and /storage/usbdisk0 / , then I didnt get any device whicle device is attached via OTG port. Please can anyone tell me how can I get the USB details attached via OTG port to Tablet Below example link provides data like :

Android 6.0 Developer Preview (API level 23) can natively mounts external removable USB OTG storages out-of-the-box without any additional apps (for more info please see: https://www.androidpolice.com/2015/05/28/android-m-feature-spotlight-external-storage-can-be-adopted-as-true-internal-storage-or-accessed-normally-with-no-additional-apps/ ). When user connects USB OTG storage, it shows up in the system storage menu and it is accessible with the built-in file manager. User can access all files on the USB OTG external storage using the new built-in file manager without root rights. When I

I have one custom made device for measuring current. This device can be connected to PC and communication is done over USB. It is based on FTDI chip. I have application written in Java and that application is using rxtxSerial.dll library and gnu.io.rxtx_2.1.7.4.jar. Now I want to port this application on my android device and I'm litte bit confused what to do that? All I have is android tablet (os version 4.1.1), OTG cable and this measuring device. Should my device be rooted? Is there any kind of library that I can simply add to my Java Android application and read data over USB? Where to