Virtual COM Port

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.

Table 1. Virtual COM Port Connections
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) -