Espressif Systems ESP Faq page 102

Chapter 4. Software framework
Are there any references to the library and demo of ESP32-S2 USB Host?
Please refer to USB Host
The USB protocol supported by ESP32-S2 is OTG 1.1, with the maximum speed of 12 Mbps. Can it com-
municate with USB 2.0 devices?
In the full speed mode, USB 2.0 devices are compatible with USB 1.1 devices, so they can communicate
with each other.
Does ESP32-S2 support USB camera?
Yes. For the demo code of ESP32-S2/ESP32-S3 USB Host UVC, please refer to usb_stream.
Does ESP32-S3 support USB cameras with microphones and speakers?
Yes. For the demo code of ESP32-S2/ESP32-S3 USB Host UVC, please refer to usb_stream.
Is there any reference for the example of using ESP32S2 as a USB flash drive (MSC DEVICE)?
Please refer to usb_msc_wireless_disk
540 KB/s, write 350 KB/s.
As ESP32-C3 already has USB function, can I download firmware directly via USB without using the cp2102
chip?
Yes, ESP32-C3 can download firmware via USB, The USB serial port number should be displayed as
COMx on Windows devices and ttyACMx on Linux devices.
Does ESP32-C3 support USB Host?
No, it only supports USB-Serial-JTAG function and can only be used as the USB device.
The ESP32-C3 chip can use USB to download firmware, but it is not supported under ESP-IDF v4.3. How
to use USB to download firmware?
You need to compile under ESP-IDF v4.4 or later versions. After pulling the latest branch and
the IDF tool, you can compile normally and download it using USB. Please refer to
console for the usage.
Espressif Systems
in ESP-IDF.
demo. The average read and write speed currently tested is: read
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