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Re:Raspberry Pi Pico Bit-Bangs 100 Mbit/S Ethernet by bschwindHN on Wednesday October 29, 2025 @10:48PM (#45755912)
Here you go, I2S output:

https://github.com/bschwind/rp2040-i2s/blob/e1d5647704b03ad1...

And I2S input:

https://github.com/bschwind/rp2040-i2s/blob/e1d5647704b03ad1...

The RP2040 has great documentation and the PIO is an amazing swiss army knife of a peripheral. I've had no trouble learning from their datasheet and docs and making plenty of PIO programs.

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