View Source Wafer.Driver.ElixirALE.GPIO (wafer v1.0.3)

A connection to a native GPIO pin via ElixirALE's GPIO driver.

Implements the Wafer.Conn behaviour as well as the Wafer.GPIO protocol.

Summary

Functions

Acquire a connection to the specified GPIO pin using the ElixirALE GPIO driver.

Types

@type option() ::
  {:pin, non_neg_integer()}
  | {:direction, Wafer.GPIO.pin_direction()}
  | {:force, boolean()}
@type options() :: [option()]
@type t() :: %Wafer.Driver.ElixirALE.GPIO{direction: term(), pid: pid(), pin: term()}

Functions

@spec acquire(options()) :: {:ok, t()} | {:error, reason :: any()}

Acquire a connection to the specified GPIO pin using the ElixirALE GPIO driver.

Options

  • :pin (required) - the integer pin number. Hardware dependent.
  • :direction - either :in or :out. Defaults to :out.