<![CDATA[PlatformIO + pioarduino + M5StickC Plus2: Cannot compile due to I2S v2 API incompatibility]]>I’m using an M5StickC Plus2 and the M5Stack SPK2 Hat (I2S speaker).
In the Arduino IDE, everything works perfectly using ESP32-audioI2S with Arduino core 3.x.
Now I’m trying to use PlatformIO with pioarduino (ESP32 core 3.x fork) to get the same audio playback working.

❌ Problem
Compilation fails due to:

error: 'i2s_chan_handle_t' does not name a type
This comes from code that uses the new I2S v2 API (i2s_std_config_t, i2s_chan_handle_t, etc.).

This seems related to PlatformIO’s use of its own build system and lack of ESP-IDF header propagation or mismatched SDKs.

⚙️ My Setup
PlatformIO platformio.ini:
platform = https://github.com/pioarduino/platform-espressif32.git
board = m5stick-c
framework = arduino
monitor_speed = 115200
lib_deps =
https://github.com/m5stack/M5Unified.git#8b25496
https://github.com/m5stack/M5GFX.git#develop
arduino-libraries/Arduino_BMI270_BMM150
paulstoffregen/Mahony
adafruit/Adafruit Unified Sensor
adafruit/Adafruit BusIO
adafruit/Adafruit BMP280 Library
arduino-libraries/WiFi
schreibfaul1/ESP32-audioI2S
m5stack/M5Unified
🔍 What I've Tried
Works in Arduino IDE with Arduino core 3.0.0

Fails in PlatformIO (even with pioarduino)

Tried modifying library includes to manually pull in ESP-IDF 5 headers — no success
Tried every other audio library I could find but all fail, both on espressif32 and pioarduino
💡 Feature Request
Could you provide:

Either a backwards-compatible version using the I2S v1 API (e.g., i2s_config_t)

Or guidance for PlatformIO+pioarduino users to get this compiling?

]]>https://community.m5stack.com/topic/7625/platformio-pioarduino-m5stickc-plus2-cannot-compile-due-to-i2s-v2-api-incompatibilityRSS for NodeFri, 13 Mar 2026 11:13:51 GMTThu, 19 Jun 2025 06:33:41 GMT60