mirror of
https://github.com/kidoman/embd
synced 2024-05-29 07:08:04 +02:00
915b3b76a7
the characterdisplay package is an abstraction layer for controlling character displays also includes refactors to the hd44780 package to fit the characterdisplay Controller interface
54 lines
785 B
Go
54 lines
785 B
Go
// +build ignore
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package main
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import (
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"flag"
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"time"
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"github.com/kidoman/embd"
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"github.com/kidoman/embd/controller/hd44780"
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_ "github.com/kidoman/embd/host/all"
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)
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func main() {
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flag.Parse()
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if err := embd.InitI2C(); err != nil {
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panic(err)
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}
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defer embd.CloseI2C()
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bus := embd.NewI2CBus(1)
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hd, err := hd44780.NewI2C(
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bus,
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0x20,
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hd44780.PCF8574PinMap,
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hd44780.RowAddress20Col,
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hd44780.TwoLine,
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hd44780.BlinkOn,
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)
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if err != nil {
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panic(err)
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}
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defer hd.Close()
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hd.Clear()
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message := "Hello, world!"
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bytes := []byte(message)
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for _, b := range bytes {
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hd.WriteChar(b)
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}
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hd.SetCursor(0, 1)
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message = "@embd | hd44780"
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bytes = []byte(message)
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for _, b := range bytes {
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hd.WriteChar(b)
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}
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time.Sleep(10 * time.Second)
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hd.BacklightOff()
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}
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