How to use A10-Lime Android USB host sockers?

Started by woj, August 28, 2018, 01:10:18 pm

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I have problem with connection to the USB host socket in my Android application (A10-Lime). I am planning to use it as USB serial port to connect with my other project with FTDI chip on second side.
At the moment I cannot list the USB devices. I prepare an application which use USBManager.getDeviceList() according to the instruction:
but every time I got empty list.

I tried also other application like FTDI example:
or UsbSerial library example:

And every time I got empty list. When I check logs using "dmesg" I see, that every device is recognized.

Could somebody give me hint?
Thanks in advance.