import machine
import time
 
buzzer = machine.PWM(machine.Pin(14))
 
# ── Note frequencies (Hz) ──────────────────────────
NOTES = {
    'B3': 247,
    'C4': 262, 'D4': 294, 'E4': 330, 'F4': 349,
    'G4': 392, 'A4': 440, 'B4': 494,
    'C5': 523, 'D5': 587, 'E5': 659, 'F5': 698,
    'G5': 784, 'A5': 880,
    'R':  0    # rest
}
 
# ── Timing — 140 BPM ───────────────────────────────
BPM = 140
Q   = int(60000 / BPM)   # quarter note  ≈ 428 ms
E   = Q // 2             # eighth        ≈ 214 ms
S   = Q // 4             # sixteenth     ≈ 107 ms
H   = Q * 2              # half          ≈ 857 ms
DQ  = Q + E              # dotted quarter
GAP = 25                 # articulation gap between notes
 
def play(note, dur):
    if NOTES[note] == 0:
        buzzer.duty_u16(0)
        time.sleep_ms(dur)
    else:
        buzzer.freq(NOTES[note])
        buzzer.duty_u16(32768)          # 50% duty = max volume
        time.sleep_ms(dur - GAP)
        buzzer.duty_u16(0)
        time.sleep_ms(GAP)
 
def play_song(melody):
    for note, dur in melody:
        play(note, dur)
 
# ── Monkey Dance melody ────────────────────────────
# Bouncy, syncopated, playful — 4/4 time
 
intro = [
    ('G4', E), ('G4', S), ('A4', S), ('G4', E), ('E4', E),
    ('D4', Q), ('R',  E), ('D4', E),
    ('G4', E), ('G4', S), ('A4', S), ('G4', E), ('E4', E),
    ('C4', H),
]
 
verse = [
    ('E4', E), ('G4', E), ('A4', E), ('G4', E),
    ('E4', E), ('D4', E), ('E4', Q),
    ('G4', E), ('A4', E), ('B4', E), ('A4', E),
    ('G4', H),
 
    ('A4', E), ('A4', S), ('B4', S), ('A4', E), ('G4', E),
    ('E4', DQ), ('D4', S), ('E4', S),
    ('G4', E), ('G4', E), ('A4', E), ('G4', E),
    ('E4', H),
]
 
bridge = [
    ('C5', E), ('D5', E), ('E5', E), ('D5', E),
    ('C5', E), ('B4', E), ('A4', Q),
    ('B4', E), ('C5', E), ('D5', E), ('C5', E),
    ('B4', H),
 
    ('G4', S), ('A4', S), ('B4', E), ('C5', E), ('B4', E),
    ('A4', E), ('G4', E), ('A4', Q),
    ('G4', E), ('E4', E), ('G4', E), ('A4', E),
    ('G4', H),
]
 
# fast bouncy fill at the end
outro = [
    ('G4', S), ('A4', S), ('G4', S), ('E4', S),
    ('G4', S), ('A4', S), ('G4', S), ('E4', S),
    ('C5', E), ('B4', E), ('A4', E), ('G4', E),
    ('G4', H), ('R', Q),
]
 
# ── Run it ─────────────────────────────────────────
print("Monkey Dance!")
play_song(intro)
play_song(verse)
play_song(bridge)
play_song(verse)    # repeat verse
play_song(outro)
 
buzzer.duty_u16(0)
buzzer.deinit()
print("Done!")