wafer

v0.1.0

wafer v0.1.0 Wafer.Driver.Circuits.GPIO

A connection to a native GPIO pin via Circuits' GPIO driver.

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

Link to this section Summary

Types

option()
options()
t()

Functions

acquire(opts)

Acquire a connection to a native GPIO pin via Circuit's GPIO driver.

Link to this section Types

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option()

option() :: {:pin, non_neg_integer()} | {:direction, Wafer.GPIO.pin_direction()}
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options()

options() :: [option()]
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t()

t() :: %Wafer.Driver.Circuits.GPIO{
  direction: Wafer.GPIO.pin_direction(),
  pin: non_neg_integer(),
  ref: reference()
}

Link to this section Functions

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acquire(opts)

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

Acquire a connection to a native GPIO pin via Circuit's GPIO driver.

Options

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