firmata_buzzer.go

package main

import (
	"time"

	"github.com/hybridgroup/gobot"
	"github.com/hybridgroup/gobot/platforms/firmata"
	"github.com/hybridgroup/gobot/platforms/gpio"
)

func main() {
	gbot := gobot.NewGobot()

	firmataAdaptor := firmata.NewFirmataAdaptor("arduino", "/dev/ttyACM0")
	buzzer := gpio.NewBuzzerDriver(firmataAdaptor, "buzzer", "3")

	work := func() {
		type note struct {
			tone     float64
			duration float64
		}

		song := []note{
			{gpio.C4, gpio.Quarter},
			{gpio.C4, gpio.Quarter},
			{gpio.G4, gpio.Quarter},
			{gpio.G4, gpio.Quarter},
			{gpio.A4, gpio.Quarter},
			{gpio.A4, gpio.Quarter},
			{gpio.G4, gpio.Half},
			{gpio.F4, gpio.Quarter},
			{gpio.F4, gpio.Quarter},
			{gpio.E4, gpio.Quarter},
			{gpio.E4, gpio.Quarter},
			{gpio.D4, gpio.Quarter},
			{gpio.D4, gpio.Quarter},
			{gpio.C4, gpio.Half},
		}

		for _, val := range song {
			buzzer.Tone(val.tone, val.duration)
			<-time.After(10 * time.Millisecond)
		}
	}

	robot := gobot.NewRobot("bot",
		[]gobot.Connection{firmataAdaptor},
		[]gobot.Device{buzzer},
		work,
	)

	gbot.AddRobot(robot)

	gbot.Start()
}