The SAM4L Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and debug the ATSAM4LC4C 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 SAM4L GPIOs. Atmel Studio can be used as a front end for the Embedded Debugger.