The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAMD21J18A UARTs. For further information on how to use the Virtual COM port see Embedded Debugger.
| Pin on SAM D21 | Function |
|---|---|
| PA22 | SERCOM3 PAD[0] UART TXD (SAM D21 TX line) |
| PA23 | SERCOM3 PAD[1] UART RXD (SAM D21 RX line) |