# Adafruit CircuitPython 10.0.0-alpha.6-84-g56bff43e84-dirty on 2025-08-22; Adafruit Fruit Jam with rp2350b

import audiobusio
import audiomixer
import board
import displayio
import synthio
import random
import time

import adafruit_tlv320

TEMPO = 240
TEST = True

MIDI = (
    b'\x00\x90E\x7f\x81p\x80E\x00\x00\x90C\x7f\x81p\x80C\x00\x00\x90A\x7f\x81p\x80A\x00\x00\x90>\x7f\x81p\x80>\x00\x00\xff/\x00',
    b'\x00\x90>`\x81p\x80>\x00\x81p\x90;`\x81p\x80;\x00x\x907`x\x807\x00\x00\xff/\x00'
)

# disable REPL output over DVI
displayio.release_displays()

# setup dac
i2c = board.I2C()
dac = adafruit_tlv320.TLV320DAC3100(i2c)
dac.configure_clocks(sample_rate=22050, bit_depth=16)
dac.speaker_output = True
dac.dac_volume = 0

# setup audio
audio = audiobusio.I2SOut(board.I2S_BCLK, board.I2S_WS, board.I2S_DIN)
mixer = audiomixer.Mixer(voice_count=len(MIDI), channel_count=1, sample_rate=dac.sample_rate, bits_per_sample=dac.bit_depth)
audio.play(mixer)

# create midi tracks
tracks = [synthio.MidiTrack(x, tempo=TEMPO, sample_rate=dac.sample_rate) for x in MIDI]

# play
for i, track in enumerate(tracks):
    mixer.play(track, voice=i, loop=True)

while True:
    for i in range(2):
        tempo = random.randint(TEMPO//2, TEMPO*2)
        for track in tracks:
            track.tempo = tempo
        print(tempo)
        time.sleep(2)