The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAML21J18B UARTs. For further information on how to use the Virtual COM port, see Embedded Debugger.
| SAM L21 pin | Function | Shared functionality |
|---|---|---|
| PA22 | SERCOM3 PAD[0] UART TXD (SAM L21 TX line) | - |
| PA23 | SERCOM3 PAD[1] UART RXD (SAM L21 RX line) | - |