ESP32-S2-DevKitM-1(U) USB and Serial Chip

espiando
Posts: 14
Joined: Tue Oct 05, 2021 2:31 pm

ESP32-S2-DevKitM-1(U) USB and Serial Chip

Postby espiando » Tue Oct 05, 2021 2:36 pm

Hello,

I just purchased a couple of development boards and would like to understand why above board has an additional USB to UART bridge?
I understand USB port can be connected directly to ESP32 S2 chip. Is this to increase the speed ?

Thanks for clarification

chegewara
Posts: 2309
Joined: Wed Jun 14, 2017 9:00 pm

Re: ESP32-S2-DevKitM-1(U) USB and Serial Chip

Postby chegewara » Tue Oct 05, 2021 6:25 pm

As you can see its DevKit, which means its for development purpose.
esp32 S2 its a lot more than just USB and not everyone will use it, also when you are developing USB application it is good to have some debug port, thus cp210x is very handy.

espiando
Posts: 14
Joined: Tue Oct 05, 2021 2:31 pm

Re: ESP32-S2-DevKitM-1(U) USB and Serial Chip

Postby espiando » Wed Oct 06, 2021 1:06 am

thanks for the input, means that without the additional chip is not possible to have serial over usb ?
when I look to other devkits, this is possible without the USB to serial chip.

Sorry not so familiar with ESP yet, therefore this basic question.

chegewara
Posts: 2309
Joined: Wed Jun 14, 2017 9:00 pm

Re: ESP32-S2-DevKitM-1(U) USB and Serial Chip

Postby chegewara » Wed Oct 06, 2021 3:09 am

Yes, it is possible.
The thing is that esp32 S2/S3 has only 1 USB port, which can work as USB device or USB host at the same time. Now lets say you want to work on USB host device and you dont have option to debug logs. Even when you are trying to build USB device in some situation it wont be possible to use USB for logging.

espiando
Posts: 14
Joined: Tue Oct 05, 2021 2:31 pm

Re: ESP32-S2-DevKitM-1(U) USB and Serial Chip

Postby espiando » Wed Oct 06, 2021 4:39 am

thanks, this was the answer I was looking for. Did not have the Host Use Case in mind :D

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