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Play PWM audio on ESP32-S3 boards #11672

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Merged
dhalbert merged 1 commit into from
Oct 27, 2026
Merged

Play PWM audio on ESP32-S3 boards #11672

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1 change: 1 addition & 0 deletions ports/espressif/boards/adafruit_esp32s3_camera/mpconfigboard.mk
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ CIRCUITPY_ESPCAMERA = 1

CIRCUITPY_AUDIOBUSIO = 0
CIRCUITPY_AUDIOI2SIN = 0
CIRCUITPY_AUDIOPWMIO = 0
CIRCUITPY_CANIO = 0
CIRCUITPY_DUALBANK = 0
CIRCUITPY_FRAMEBUFFERIO = 0
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1 change: 1 addition & 0 deletions ports/espressif/boards/seeed_xiao_esp32_s3_trmnl_diy_kit/mpconfigboard.mk
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Expand Up @@ -30,3 +30,4 @@ CIRCUITPY_AUDIOCORE = 0
CIRCUITPY_AUDIOBUSIO = 0
CIRCUITPY_AUDIOBUSIO_PDMIN = 0
CIRCUITPY_AUDIOI2SIN = 0
CIRCUITPY_AUDIOPWMIO = 0
7 changes: 5 additions & 2 deletions ports/espressif/mpconfigport.mk
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Expand Up @@ -484,6 +484,9 @@ CIRCUITPY_ESP_USB_SERIAL_JTAG ?= 0
# No DAC
CIRCUITPY_AUDIOIO = 0

# LEDC + GPTimer PWM audio, the only analog audio output without I2S hardware.
CIRCUITPY_AUDIOPWMIO ?= 1

endif
#### end chip-specific choices ########################################

Expand Down Expand Up @@ -552,8 +555,8 @@ USB_NUM_IN_ENDPOINTS = 5
# only thing a user needs, with no custom build.
ifeq ($(IDF_TARGET),esp32s3)
# It needs the TinyUSB device stack and audiocore, so leave it off for boards
# that turn either off. The S3 has no AUDIOIO and no AUDIOPWMIO, so audiocore
# follows CIRCUITPY_AUDIOBUSIO here.
# that turn either off. CIRCUITPY_AUDIOCORE is not set yet at this point, so
# boards that drop audio are recognized by CIRCUITPY_AUDIOBUSIO = 0 instead.
ifeq ($(filter 0,$(CIRCUITPY_USB_DEVICE) $(CIRCUITPY_AUDIOCORE) $(CIRCUITPY_AUDIOBUSIO)),)
CIRCUITPY_USB_AUDIO ?= 1
endif
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