26 lines
852 B
Go
26 lines
852 B
Go
// 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"
|
|
|
|
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
|
|
)
|