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Description
When using both DAC and ESP32SPI it seems that the order the objects are initialized causes the DAC to work or not. If ESP_SPIControl is initialized before the DAC then audio play back works successfully. But if the DAC is initialized before ESP_SPIControl then audio playback does not work. audio.playing property is true and the while loop finishes after the length of the audio file, but no audio comes out of the speaker.
Adafruit CircuitPython 10.0.0-alpha.7-7-g363be5fe80 on 2025-07-01; Adafruit Fruit Jam with rp2350b
This reproducer script illustrates the issue. Swapping between the two commented ESP init lines causes the audio playback to work or not work consistently for me on Fruit Jam revC hardware.
from audiocore import WaveFile
import time
import gc
import board
import busio
from digitalio import DigitalInOut
from adafruit_esp32spi import adafruit_esp32spi
from os import getenv
import adafruit_tlv320
import audiobusio
ssid = getenv("CIRCUITPY_WIFI_SSID")
password = getenv("CIRCUITPY_WIFI_PASSWORD")
esp32_cs = DigitalInOut(board.ESP_CS)
esp32_ready = DigitalInOut(board.ESP_BUSY)
esp32_reset = DigitalInOut(board.ESP_RESET)
spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
# Init ESP_SPIControl here and the audio beep plays successfully
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
i2c = board.I2C()
dac = adafruit_tlv320.TLV320DAC3100(i2c)
dac.headphone_output = True
dac.configure_clocks(sample_rate=16000, bit_depth=16)
audio = audiobusio.I2SOut(board.I2S_BCLK, board.I2S_MCLK, board.I2S_DIN)
wave_file = open("/beep.wav", "rb")
beep_wave = WaveFile(wave_file)
# Init ESP_SPIControl here and the audio beep does not play
# esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
time.sleep(2)
audio.play(beep_wave)
while audio.playing:
pass
print("Audio playback complete")
This audio file is used: beep.wav.zip