4.4.4 UART Connection
The SAM R34 Xplained Pro Evaluation Kit exposes the UART on EXT1. This is useful for command line interfaces, debugging and application layer code.
Info: The TXD/RXD UART signals exposed on EXT1 are connected
to SERCOM 5 which is in low-power domain PD0. Because of low-power constraints, SERCOM 5
does not support CTS/RTS flow-control signals.
The following table provides the UART signals pin description.
| SAM R34 pin | Function | Shared Functionality |
|---|---|---|
| D3 | PA04_S0_UART_TX | EXT1, EDBG |
| C4 | PA05_S0_UART_RX | EXT1, EDBG |