speaker: add implementation of speaker using Buzzer.

Signed-off-by: Ron Evans <[email protected]>

Author: deadprogram

examples/speaker/main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"time"
+
+	"github.com/hybridgroup/gopherbot"
+)
+
+func main() {
+	speaker := gopherbot.Speaker()
+
+	left := gopherbot.LeftButton()
+	right := gopherbot.RightButton()
+
+	for {
+		if right.Pushed() {
+			speaker.Bleep()
+		}
+
+		if left.Pushed() {
+			speaker.Bloop()
+		}
+
+		time.Sleep(200 * time.Millisecond)
+	}
+}

speaker.go

@@ -0,0 +1,37 @@
+package gopherbot
+
+import (
+	"machine"
+
+	"tinygo.org/x/drivers/buzzer"
+)
+
+// SpeakerDevice is the Gopherbot speaker.
+type SpeakerDevice struct {
+	buzzer.Device
+}
+
+// Speaker returns the SpeakerDevice.
+func Speaker() *SpeakerDevice {
+	enable := machine.PA30
+	enable.Configure(machine.PinConfig{Mode: machine.PinOutput})
+	enable.Set(true)
+
+	speaker := machine.A0
+	speaker.Configure(machine.PinConfig{Mode: machine.PinOutput})
+
+	bzr := buzzer.New(speaker)
+	return &SpeakerDevice{bzr}
+}
+
+// Bleep makes a bleep sound using the speaker.
+func (s *SpeakerDevice) Bleep() {
+	// do bleep
+	s.Tone(buzzer.C3, buzzer.Eighth)
+}
+
+// Bloop makes a bloop sound using the speaker.
+func (s *SpeakerDevice) Bloop() {
+	// do bloop
+	s.Tone(buzzer.C5, buzzer.Quarter)
+}