On Sat, Dec 05, 2015 at 11:39:01AM -0500, Lennart Sorensen wrote:
On Sat, Dec 05, 2015 at 11:10:40AM -0500, William Park wrote:
Hi guys,
Do you know a way to emulate a USB keyboard using Raspberry Pi, BeagleBone Black, ODROID, or some other embedded board? That is, as far as PC is concerned, it's receiving keypresses from some keyboard.
I know those boards have UART pins. But, even if I connect the pins to a serial-to-USB cable, the USB end of the cable will show up as serial (/dev/ttyUSBx) and not as keyboard. I have such a cable, and that's what I see.
If it supports linux's USB gadget interface then you should be in luck:
Thanks for the link. It even has sample code for testing!
Raspberry pie can NOT do it, since it has a permanent USB hub connected, and you can't have a hub connected to the port to use it in gadget mode (since gadget mode means being a USB client, not a host).
The BBB on the hand can do it. I didn't check the others.
Both BeagleBone Black and ODROID-U3 have USB mini-B port, and do mention USB "client mode" in their online specs. So, I'm encouraged. -- William