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42 lines
894 B
Go
42 lines
894 B
Go
// Copyright 2025 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 nxp74hc595
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import (
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"log"
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"periph.io/x/conn/v3/gpio"
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"periph.io/x/conn/v3/physic"
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"periph.io/x/conn/v3/spi"
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"periph.io/x/conn/v3/spi/spireg"
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"periph.io/x/host/v3"
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)
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func Example() {
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if _, err := host.Init(); err != nil {
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log.Fatal(err)
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}
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// Open the SPI Bus
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pc, err := spireg.Open("")
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if err != nil {
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log.Fatal(err)
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}
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defer pc.Close()
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conn, err := pc.Connect(physic.MegaHertz, spi.Mode1, 8)
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if err != nil {
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log.Fatal(err)
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}
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// Create a new 74HC595 device conn that bus.
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dev, err := New(conn)
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if err != nil {
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log.Fatal(err)
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}
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// Get a GPIO group, and write values to it.
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gr, _ := dev.Group(0, 1, 2, 3, 4, 5, 6, 7, 8)
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for i := range 256 {
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gr.Out(gpio.GPIOValue(i), 0)
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}
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}
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