GrovePi v0.2.0
GrovePi.Ultrasonic
Read distance from the Grove Ultrasonic sensor.
Example use:
iex> pin = 3
iex> {:ok, pid}=GrovePi.Ultrasonic.start_link(pin)
{:ok, #PID<0.205.0>}
iex> GrovePi.Ultrasonic.read_distance(pin)
20
iex> GrovePi.Ultrasonic.read_distance(pin)
23