What is the difference between LINE_IN and ENCODE/DECODE codec modes and how to play sound from AUX

[spacebiker]

I'm trying to send audio from i2s (AUX in) to bluetooth headphones. I made a pipeline i2s->bt, But if i type

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audio_hal_ctrl_codec(board_handle->audio_hal, AUDIO_HAL_CODEC_MODE_DECODE, AUDIO_HAL_CTRL_START);

or

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AUDIO_HAL_CODEC_MODE_ENCODE

, i hear sound from microphones, but not from AUX_IN. But when I type

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AUDIO_HAL_CODEC_MODE_LINE_IN

i hear no sound at all. Moreover, it works with wire headphones(https://github.com/espressif/esp-adf/tr ... e_passthru), but doesn't for wireless. What am i doing wrong?

Full code: https://pastebin.com/AEmCqPuT

Thank you!

[spacebiker]

Problem is solved. You should add lines below:

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audio_hal_ctrl_codec(board_handle->audio_hal, AUDIO_HAL_CODEC_MODE_BOTH, AUDIO_HAL_CTRL_START); // instead of AUDIO_HAL_CODEC_LINE_IN
es8388_write_reg(ES8388_ADCCONTROL2, ADC_INPUT_LINPUT2_RINPUT2);
es8388_write_reg(ES8388_ADCCONTROL1, 0x00);