esp_codec_dev I2S PHILIPS MODE (AUD-4610)

[tore-espressif]

Environment

• Audio development kit: ESP32-S3-Korvo-2-LCD
• Audio kit version v3.1
• [Required] Module or chip used: ESP32-S3-WROOM-1
• [Required] IDF version v5.1
• [Required] ADF version esp_codec_dev v1.0.1
• Build system: idf.py
• [Required] Running log: Log is OK
• Compiler version (run xtensa-esp32-elf-gcc --version in your project folder to find it): // 1.22.0-80-g6c4433a
• Operating system: Windows
• (Windows only) Environment type: Power Shell
• Using an IDE?: No
• Power supply: USB

Problem Description

I can see that esp_codec_dev always reconfigures my I2S slot to MSB mode https://github.com/espressif/esp-adf/blob/master/components/esp_codec_dev/platform/audio_codec_data_i2s.c#L75 How do I configure it for PHILIPS mode?

[TempoTian]

You can change the mentioned line to i2s_std_slot_config_t slot_cfg = I2S_STD_PHILIPS_SLOT_DEFAULT_CONFIG(fs->bits_per_sample, fs->channel); and have a try. We will commit a new verison of esp_codec_dev it will add support for TDM mode, the default STD slot config will change to PHILIP mode.

[tore-espressif]

Thank you for the quick response @TempoTian !

Just an FYI: I am attaching my changes that I had to do to get playback working on ES8311 with various sampling frequencies: https://github.com/espressif/esp-adf/compare/master...tore-espressif:fix/esp_codec_dev

[TempoTian]

Thanks! Yes, you are right, add codec format setting is necessary, if use PHILIP mode, need not change to left align inside codec also.