Possible to use both USB and UART1 on P1?

We’re looking to take a design from Photon to P1 and this question came up when looking at the P1 datasheet - will we be able to use both UART1 and USB?

I noticed that the USB is connected to pins MICRO_UART1_RTS and MICRO_UART1_CTS. Then the UART RX and TX go to MICRO_UART1_TX and MICRO_UART1_RX. Is the implication that both are using the same underlying UART and can’t be used together? Will we need to run our UART TX and RX to other pins if we want to use USB in the P1?


Yes you can use both interfaces in parallel since Serial1 does not use RTS/CTS flow control.

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