• ControlHandler() : usb_serial_structs.c , usb_serial_structs.h
• FaultISR() : startup_gcc.c
• IntDefaultHandler() : startup_gcc.c
• main() : startup_gcc.c
• NmiSR() : startup_gcc.c
• ResetISR() : startup_gcc.c
• RxHandler() : usb_serial_structs.h , usb_serial_structs.c
• TxHandler() : usb_serial_structs.c , usb_serial_structs.h