User Guide
20 of 46
Rev. 1.0
2022-03-09
48V Battery Switch Reference Design
R 48V BATT Switch10
System and functional description
2.3.2
Operating the switch via command line interface
The firmware of the XMC4700 microcontroller provides a simple command line interface for extended
configuration, control, and diagnosis of the 48V Battery Switch. To use it a standard terminal emulator program
for serial port communication like TeraTerm or PuTTY is needed.
The command line interface uses a virtual COM port via the USB interface for communication. The COM port
gets assigned automatically when the USB cable to the XMC4700 Relax Lite Kit is plugged in. To locate the COM
port number on a Windows PC, check the port assignment in the device manager (Figure 21). The assigned
virtual COM port number is shown in brackets next to the port named “JLink CDC UART Port”.
Figure 21
Locating the virtual COM port in the device manager
Following settings have to be set in the terminal emulator for the serial port communication:
Baud Rate: 115200 bps
8 data bits
No parity bits
1 stop bit
Figure 22
Virtual COM port settings
The terminal window size should be at least 100 characters wide to avoid line wrapping.
After power-up or reset a welcome message and a command prompt is displayed
