Can the USB serial and the pin 6/7 serial be used at the same time (Seeeduino XIAO)?

Hi,

Can the USB serial (Serial) be used at the same time as pins 6 and 7 (Serial1)?

Thanks,

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Yes. I Arduino this would be Serial1 as a low level logic serial port. Remember not RS232 voltages directly.

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… and of course D6/D7 can be used as GPIO pins if not used as Serial1 IO.

Yes, the hardware serial lines are used by using Serial1, in arduino speak

Serial1.begin(baud rate);