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