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ESP32-S3 cdc device hot plug question
Posted: Mon Dec 18, 2023 9:28 am
by Away_480522
Does the ESP32-S3 cdc device support hot plug? Why did I test and find that after multiple hot plug, the USB can no longer send data? Even if the monitoring VBUS is set up on the software and hardware, the result is still the same.What is the reason？
Re: ESP32-S3 cdc device hot plug question
Posted: Fri Oct 10, 2025 9:18 am
by maldus
I am interested in this topic as well. I have a couple of projects powered by ESP32S3 and the monitoring USB seems to stop responding after a few hotplugs. The first attempts work, but at some point the serial port starts appearing but not answering (no output).
Re: ESP32-S3 cdc device hot plug question
Posted: Mon Oct 13, 2025 8:41 am
by tore-espressif
USB hot plugging works on ESP32-S3 USB device applications. You must also check the connection status in your software, eg. do not send data when disconnected because your buffers could overflow.
If you can provide more details about the failure and how to reproduce it, I can have a look