Fast USB stack

[Deouss]

I am looking for code and examples how to make esp32 work with USB 2.0 protocols mostly isochronous and bulk.
I am not sure if USB 3.0 is possible and just wonder if there are any projects or libraries that could help with that.

[loboris]

ESP32 does not have any USB hardware!

[Deouss]

You can turn esp32 into usb device with full protocols support just don't know how fast.

[loboris]

I'm aware of some tests on implementing the software USB on ESP32, but as far as I know it is far from "you can turn esp32 into usb device with full protocols support".
Maybe USB 1.0 could be implemented, but I'm quite shure USB 2.0/3.0 will never be possible.
If you have more information, please share it.

[Deouss]

Check this guy insane attempts

https://www.youtube.com/watch?v=-NxoNdTj_7U

[ESP_Sprite]

Heh, that's an USB1.1 low-speed (1.5MBit) stack on an entirely different processor. You're skipping straight past USB1.1 full-speed (12MBit) and are not only intending to run USB2.0 on it (480MBit) but even USB3.0 (5GBit)? I like your optimism, but I hope you can imagine we think that not only porting this library from the ESP8266 to the ESP32 but also increasing the speed 320-fold or even 3333-fold is... well, let's say I wish you good luck in your attempt and sincerely hope you find some way to pull it off, but you'll have to excuse us for not holding our collective breath.

[Deouss]

Well, yes that example was done on ESP8266 but ESP32 is faster, right? So at least usb1.1 would be possible.
I am not sure how to calculate speed but with 240MHz running 2 parallel transfers (per core) can give you insane speeds.
I wonder if anyone measured common esp32 transfer speeds like bluetooth, wifi etc