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