mirror of
https://github.com/kidoman/embd
synced 2024-11-12 20:48:55 +01:00
dac729e4fd
the hd44780 package supports HD44780 character display controllers connected by either a 4-bit GPIO bus or an I2C bus it also includes a high-level wrapper for easily printing messages
44 lines
621 B
Go
44 lines
621 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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display, err := hd44780.NewI2CCharacterDisplay(
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bus,
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0x20,
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hd44780.PCF8574PinMap,
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20,
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4,
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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 display.Close()
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display.Clear()
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display.Message("Hello, world!\n@embd")
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time.Sleep(10 * time.Second)
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display.BacklightOff()
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}
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