need assistance sequence pier communications ruby

i need communications over sequence pier ruby. research, appears there aren't difficult libraries sequence communications newest component i 2006. there any gems i'm wakeful of?

i eventually need say communications sequence device trustworthy usb (i figure out pier problem) behind leading communications (somewhat ruby-esque pseudo code).

def serial_write_read
  serial.read == "ready"
    serial.write "1"
    until serial.read == "ok"
      serial.write "5"
    end
    relapse serial.read == "done"
  end
end