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package gpio
import (
"time"
"gobot.io/x/gobot"
)
const (
Whole = 4
Half = 2
Quarter = 1
Eighth = 0.500
)
const (
Rest = 0
C0 = 16.35
Db0 = 17.32
D0 = 18.35
Eb0 = 19.45
E0 = 20.60
F0 = 21.83
Gb0 = 23.12
G0 = 24.50
Ab0 = 25.96
A0 = 27.50
Bb0 = 29.14
B0 = 30.87
C1 = 32.70
Db1 = 34.65
D1 = 36.71
Eb1 = 38.89
E1 = 41.20
F1 = 43.65
Gb1 = 46.25
G1 = 49.00
Ab1 = 51.91
A1 = 55.00
Bb1 = 58.27
B1 = 61.74
C2 = 65.41
Db2 = 69.30
D2 = 73.42
Eb2 = 77.78
E2 = 82.41
F2 = 87.31
Gb2 = 92.50
G2 = 98.00
Ab2 = 103.83
A2 = 110.00
Bb2 = 116.54
B2 = 123.47
C3 = 130.81
Db3 = 138.59
D3 = 146.83
Eb3 = 155.56
E3 = 164.81
F3 = 174.61
Gb3 = 185.00
G3 = 196.00
Ab3 = 207.65
A3 = 220.00
Bb3 = 233.08
B3 = 246.94
C4 = 261.63
Db4 = 277.18
D4 = 293.66
Eb4 = 311.13
E4 = 329.63
F4 = 349.23
Gb4 = 369.99
G4 = 392.00
Ab4 = 415.30
A4 = 440.00
Bb4 = 466.16
B4 = 493.88
C5 = 523.25
Db5 = 554.37
D5 = 587.33
Eb5 = 622.25
E5 = 659.25
F5 = 698.46
Gb5 = 739.99
G5 = 783.99
Ab5 = 830.61
A5 = 880.00
Bb5 = 932.33
B5 = 987.77
C6 = 1046.50
Db6 = 1108.73
D6 = 1174.66
Eb6 = 1244.51
E6 = 1318.51
F6 = 1396.91
Gb6 = 1479.98
G6 = 1567.98
Ab6 = 1661.22
A6 = 1760.00
Bb6 = 1864.66
B6 = 1975.53
C7 = 2093.00
Db7 = 2217.46
D7 = 2349.32
Eb7 = 2489.02
E7 = 2637.02
F7 = 2793.83
Gb7 = 2959.96
G7 = 3135.96
Ab7 = 3322.44
A7 = 3520.00
Bb7 = 3729.31
B7 = 3951.07
C8 = 4186.01
Db8 = 4434.92
D8 = 4698.63
Eb8 = 4978.03
E8 = 5274.04
F8 = 5587.65
Gb8 = 5919.91
G8 = 6271.93
Ab8 = 6644.88
A8 = 7040.00
Bb8 = 7458.62
B8 = 7902.13
)
var _ gobot.Driver = (*BuzzerDriver)(nil)
// BuzzerDriver represents a digital buzzer
type BuzzerDriver struct {
pin string
name string
connection DigitalWriter
high bool
BPM float64
}
// NewBuzzerDriver return a new BuzzerDriver given a DigitalWriter and pin.
func NewBuzzerDriver(a DigitalWriter, pin string) *BuzzerDriver {
l := &BuzzerDriver{
name: gobot.DefaultName("Buzzer"),
pin: pin,
connection: a,
high: false,
BPM: 96.0,
}
return l
}
// Start implements the Driver interface
func (l *BuzzerDriver) Start() (err error) { return }
// Halt implements the Driver interface
func (l *BuzzerDriver) Halt() (err error) { return }
// Name returns the BuzzerDrivers name
func (l *BuzzerDriver) Name() string { return l.name }
// SetName sets the BuzzerDrivers name
func (l *BuzzerDriver) SetName(n string) { l.name = n }
// Pin returns the BuzzerDrivers name
func (l *BuzzerDriver) Pin() string { return l.pin }
// Connection returns the BuzzerDrivers Connection
func (l *BuzzerDriver) Connection() gobot.Connection {
return l.connection.(gobot.Connection)
}
// State return true if the buzzer is On and false if the led is Off
func (l *BuzzerDriver) State() bool {
return l.high
}
// On sets the buzzer to a high state.
func (l *BuzzerDriver) On() (err error) {
if err = l.connection.DigitalWrite(l.Pin(), 1); err != nil {
return
}
l.high = true
return
}
// Off sets the buzzer to a low state.
func (l *BuzzerDriver) Off() (err error) {
if err = l.connection.DigitalWrite(l.Pin(), 0); err != nil {
return
}
l.high = false
return
}
// Toggle sets the buzzer to the opposite of it's current state
func (l *BuzzerDriver) Toggle() (err error) {
if l.State() {
err = l.Off()
} else {
err = l.On()
}
return
}
func (l *BuzzerDriver) Tone(hz, duration float64) (err error) {
// calculation based off https://www.arduino.cc/en/Tutorial/Melody
tone := (1.0 / (2.0 * hz)) * 1000000.0
tempo := ((60 / l.BPM) * (duration * 1000))
for i := 0.0; i < tempo*1000; i += tone * 2.0 {
if err = l.On(); err != nil {
return
}
time.Sleep(time.Duration(tone) * time.Microsecond)
if err = l.Off(); err != nil {
return
}
time.Sleep(time.Duration(tone) * time.Microsecond)
}
return
}
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