nRF52 Preview DK v1.1.x

Virtual COM port

The on-board Interface MCU features a Virtual COM port via UART.

The virtual COM port has the following features:

Table 1 shows an overview of the UART connections on nRF52832 and the interface MCU.

Table 1. Relationship of UART connections on nRF52832 and Interface MCU
Default GPIO nRF52832 UART nRF52832 Interface MCU UART
P0.05 RTS CTS
P0.06 TXD RXD
P0.07 CTS RTS
P0.08 RXD TXD

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.

Important: The terminal used must send a DTR signal in order to configure the UART Interface MCU pins.

The P0.05 (RTS) and P0.07 (CTS) can be used freely when HWFC is disabled on the nRF52832.