CODEWITHSUNDEEP
androidusb
Harsh Butani
Harsh Butani

Reputation: 45

android app to send a signal through the data pin of the usb cable

I need to send a signal (basically some current) via my android phone through the usb data pin. Is there any way to do this. I have the basic knowledge of app development and am ready to create my own app. Any help would be appreciated :)

Upvotes: 3

Views: 806

Answers (1)

Kevin Reid
Kevin Reid

Reputation: 43872

Unlike some older port designs (serial and parallel ports), USB does not provide for any arbitrary electrical control. Every pin serves a specific function in the USB protocol and cannot be arbitrarily set.

Some devices may have support for switching to an alternate non-USB mode, but nearly all such modes will similarly not allow for direct control.

If your Android phone supports USB host mode, then you could connect a USB-serial (RS232) adapter. This has two control pins that can be set arbitrarily, RTS and DTR, as well as the actual serial data line.

Upvotes: 2

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