ESP32S3 USB OTG switch to Low Speed

[analoglamb]

Hello,

1. How to switch the usb otg speed from full speed to low speed?
2. esp32s3's USB only support OTG, but in the pinout there is no usb id pin, why? I want to use USB ID pin to determine esp32s3 role. How to solve it?

Thanks

[aliarifat794]

On the ESP32-S3, D- and D+ should be tied to GPIO19 and GPIO20. More here: viewtopic.php?t=26030

[chegewara]

The easiest way IIRC is to swap D+ and D- pins, but there is also some software way (when you configure usb device code).

[analoglamb]

How to switch the usb otg speed from full speed to low speed? @espressif

[ESP_Sprite]

You would normally do that in the device stack, which in our case is TinyUSB. I don't think TinyUSB has proper support for this, though, as USB low speed isn't really used anymore when you also can do full speed.

[analoglamb]

Thanks

[chegewara]

Screenshot from 2024-08-19 17-39-55.png (70.33 KiB) Viewed 920 times