pxt-calliope/libs/microbit/music.ts

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enum Notes {
//% enumval=262
C,
//% enumval=277 blockId=C#
CSharp,
//% enumval=294
D,
//% enumval=311
Eb,
//% enumval=330
E,
//% enumval=349
F,
//% enumval=370 blockId=F#
FSharp,
//% enumval=392
G,
//% enumval=415 blockId=G#
GSharp,
//% enumval=440
A,
//% enumval=466
Bb,
//% enumval=494
B,
//% enumval=131
C3,
//% enumval=139 blockId=C#3
CSharp3,
//% enumval=147
D3,
//% enumval=156
Eb3,
//% enumval=165
E3,
//% enumval=175
F3,
//% enumval=185 blockId=F#3
FSharp3,
//% enumval=196
G3,
//% enumval=208 blockId=G#3
GSharp3,
//% enumval=220
A3,
//% enumval=233
Bb3,
//% enumval=247
B3,
//% enumval=262
C4,
//% enumval=277 blockId=C#4
CSharp4,
//% enumval=294
D4,
//% enumval=311
Eb4,
//% enumval=330
E4,
//% enumval=349
F4,
//% enumval=370 blockId=F#3
FSharp4,
//% enumval=392
G4,
//% enumval=415 blockId=G#3
GSharp4,
//% enumval=440
A4,
//% enumval=466
Bb4,
//% enumval=494
B4,
//% enumval=523
C5,
//% enumval=555 blockId=C#5
CSharp5,
//% enumval=587
D5,
//% enumval=622
Eb5,
//% enumval=659
E5,
//% enumval=698
F5,
//% enumval=740 blockId=F#5
FSharp5,
//% enumval=784
G5,
//% enumval=831 blockId=G#5
GSharp5,
//% enumval=880
A5,
//% enumval=932
Bb5,
//% enumval=989
B5,
}
enum BeatFraction {
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//% enumval=1 blockId=1
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Whole = 1,
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//% enumval=2 blockId="1/2"
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Half = 2,
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//% enumval=4 blockId="1/4"
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Quater = 4,
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//% enumval=8 blockId="1/8"
Eighth = 8,
//% enumval=16 blockId="1/16"
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Sixteenth = 16
}
//% color=52 weight=33
namespace music {
var beatsPerMinute: number = 120;
/**
* Plays a tone through pin ``P0`` for the given duration.
* @param frequency TODO
* @param ms TODO
*/
//% help=functions/play-tone weight=90
//% blockId=device_play_note block="play|tone (Hz) %note=device_note|for (ms) %duration=device_beat" icon="\uf025" blockGap=8
export function playTone(frequency: number, ms: number): void {
pins.analogSetPitchPin(AnalogPins.P0);
pins.analogPitch(frequency, ms);
}
/**
* Plays a tone through pin ``P0``.
* @param frequency TODO
*/
//% help=functions/ring-tone weight=80
//% blockId=device_ring block="ring tone (Hz)|%note=device_note" icon="\uf025" blockGap=8
export function ringTone(frequency: number): void {
pins.analogSetPitchPin(AnalogPins.P0);
pins.analogPitch(frequency, 0);
}
/**
* Rests (plays nothing) for a specified time through pin ``P0``.
* @param ms TODO
*/
//% help=functions/rest weight=79
//% blockId=device_rest block="rest(ms)|%duration=device_beat"
export function rest(ms: number): void {
playTone(0, ms);
}
/**
* Gets the frequency of a note.
* @param name TODO
*/
//% shim=TD_ID weight=50 help=functions/note-frequency
//% blockId=device_note block="%note"
export function noteFrequency(name: Notes): number {
return name;
}
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function init() {
if (beatsPerMinute <= 0) beatsPerMinute = 120;
}
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/**
* Returns the duration of a beat in milli-seconds
*/
//% help=/functions/beat weight=49
//% blockId=device_beat block="%fraction|beat"
export function beat(fraction : BeatFraction = BeatFraction.Whole): number {
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init();
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let beat = 60000 / beatsPerMinute;
if (fraction == BeatFraction.Whole) return beat;
else if (fraction == BeatFraction.Half) return beat / 2;
else if (fraction == BeatFraction.Quater) return beat / 4
else if (fraction == BeatFraction.Eighth) return beat / 8;
else return beat / 16;
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}
/**
* Returns the tempo in beats per minute. Tempo is the speed (bpm = beats per minute) at which notes play. The larger the tempo value, the faster the notes will play.
*/
//% help=/functions/tempo weight=40
//% blockId=device_tempo block="tempo (bpm)" blockGap=8
export function tempo(): number {
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init();
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return beatsPerMinute;
}
/**
* Change the tempo by the specified amount
* @param bpm The change in beats per minute to the tempo, eg: 20
*/
//% help=/functions/tempo weight=39
//% blockId=device_change_tempo block="change tempo by (bpm)|%value" blockGap=8
export function changeTempoBy(bpm: number): void {
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setTempo(beat(BeatFraction.Whole) + bpm);
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}
/**
* Sets the tempo to the specified amount
* @param bpm The new tempo in beats per minute, eg: 120
*/
//% help=/functions/tempo weight=38
//% blockId=device_set_tempo block="set tempo to (bpm)|%value"
export function setTempo(bpm: number): void {
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init();
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if (bpm > 0) {
beatsPerMinute = Math.max(1, bpm);
}
}
}