XIAO ESP32S3 - USB serial and Tx/Rx for GPIO?

[Adam.Scho]

Hi, I have selected this board for a project and am using just about every pin available, including Tx/Rx (D6/D7) for GPIO.

Will I also be able to upload my firmware and receive console output over USB serial when the Tx/Rx pins are in use as GPIO?

The getting started page is helpful for serial, but I am still unclear on this detail.

[cgwaltney]

Yes… the USB serial is on different pins… D+ and D-
The unit has 3 Hardware serial units and Software Serial can be used to get serial emmulation on any digital pin

Welcome and please post more questions and information here
Multiple serial ports can be confusing and different XIAO work differently in software

XIAO ESP32C3 Multiple Software Serial Ports

Hi there, ROCK SOLID performance from the L76K GSS unit. seems to be a TAD faster and fresher than the Grove connected AIR530 Unit. I was able to run each device with each method Hardware/Software Serial on either Port. The key seems to be SoftSerial works better on pins that are already defined as a Uart channel. Hardware Serial can make changes to the interconnected PPI in the chips Peripherals to better support a Brute force or bitbanged io approach to serial comms. Baud rates also play a…