Using USB-serial FTDI adapters with Intel Edison

The current Yocto kernel distro available for the Intel Edison configure_edison --version does not include the FTDI driver. Thus when you plug a USB-serial adapter into the USB OTG host port, you’ll see it partially recognized in dmesg tail upon plugin, but you won’t see an assignment to a /dev/ttyUSB* device.

You need to install the FTDI kernel module first.

opkg install kernel-module-ftdi-sio`

This assumes you have already setup the unofficial opkg repository.

Now when you type dmesg tail you’ll see

usb: FTDI USB Serial Device converter now attached to ttyUSB0

You may have to update your kernel if this doesn’t work.