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embd/samples/mcp4725.go

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package main
import (
"log"
"math/rand"
"os"
"os/signal"
"github.com/kidoman/embd"
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"github.com/kidoman/embd/controller/mcp4725"
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)
func main() {
i2c, err := embd.NewI2C()
if err != nil {
panic(err)
}
bus := i2c.Bus(1)
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dac := mcp4725.New(bus, 0x62)
defer dac.Close()
stop := make(chan os.Signal, 1)
signal.Notify(stop, os.Interrupt, os.Kill)
for {
select {
case <-stop:
return
default:
voltage := rand.Intn(4096)
if err := dac.SetVoltage(voltage); err != nil {
log.Printf("mcp4725: %v", err)
}
}
}
}