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ESP32 i2s Audio Widget with LAN
ESP32 i2s Audio Widget with LAN
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Old 8th June 2018, 05:16 PM   #1
sgpu is offline sgpu  United Kingdom
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Default ESP32 i2s Audio Widget with LAN

Hi!

I've been working on ESP32 audio widget exposing the two i2s peripherals along with with Lan.

I have found the register settings to expose the internal APLL MCLK (low phase noise) out on CLKOUT2/UARTRX0. I then re clock the outputs at the IO with the MCLK with some 74AUP.

The dip switch selects between programming in via USB and outputting MCLK.
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Old 10th June 2018, 03:16 PM   #2
Doedolf is offline Doedolf  Netherlands
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Looks interesting! Was contemplating to do the same thing and get a proof of concept going.
Building on this idea, I wonder if it is possible to stack multiple ESP32 boards for (more than 4-channel) multichannel networked audio, using external (MCLK), BCLK and LRCLK to synchronize...
Windows, linux and/or OS-X drivers would still be an issue though.
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Old 10th June 2018, 04:23 PM   #3
sgpu is offline sgpu  United Kingdom
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Had considered writing TDM driver support for esp32... and using a few of these in mono mode... SSM3582 Datasheet and Product Info | Analog Devices
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