The SAM4L8 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and debug the ATSAM4LC8CA using Serial Wire Debug (SWD). The Embedded debugger also include a Virtual Com port interface over UART, an Atmel Data Gateway Interface over synchronous UART and TWI and it monitors four of the SAM4L8 GPIOs. Atmel Studio can be used as a front end for the Embedded Debugger.