The onboard interface MCU features a Universal Asynchronous Receiver/Transmitter (UART) interface through a virtual COM port.
The following table shows an overview of the UART connections on nRF52833 System on Chip (SoC) and the interface MCU.
GPIO nRF52833 | nRF52833 UART |
---|---|
P0.05 | RTS |
P0.06 | TXD |
P0.07 | CTS |
P0.08 | RXD |
The UART signals are routed directly to the interface MCU. The UART pins connected to the interface MCU are tri-stated when no terminal is connected to the virtual COM port on the computer.
The P0.05 (Request to Send (RTS)) and P0.07 (Clear to Send (CTS)) can be used freely when HWFC is disabled on the SoC.