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// Copyright 2018 The Periph Authors. All rights reserved.
// Use of this source code is governed under the Apache License, Version 2.0
// that can be found in the LICENSE file.
package gpio
import "periph.io/x/periph/conn/pin"
// Well known pin functionality.
const (
// Inputs
IN pin.Func = "IN" // Input
IN_HIGH pin.Func = "In/High" // Read high
IN_LOW pin.Func = "In/Low" // Read low
// Outputs
OUT pin.Func = "OUT" // Output, drive
OUT_OC pin.Func = "OUT_OPEN" // Output, open collector/drain
OUT_HIGH pin.Func = "Out/High" // Drive high
OUT_LOW pin.Func = "Out/Low" // Drive low; open collector low
FLOAT pin.Func = "FLOAT" // Input float or Output open collector high
CLK pin.Func = "CLK" // Clock is a subset of a PWM, with a 50% duty cycle
PWM pin.Func = "PWM" // Pulse Width Modulation, which is a clock with variable duty cycle
)
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