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

Posted: Tue Oct 05, 2021 2:36 pm
by espiando
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

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

Posted: Tue Oct 05, 2021 6:25 pm
by chegewara
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.

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

Posted: Wed Oct 06, 2021 1:06 am
by espiando
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.

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

Posted: Wed Oct 06, 2021 3:09 am
by chegewara
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.

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

Posted: Wed Oct 06, 2021 4:39 am
by espiando
thanks, this was the answer I was looking for. Did not have the Host Use Case in mind :D