CDBUS Bridge has two types of communication ports, which are 3 serial ports and 2 RS485 ports:

• Only one of the three serial ports will be in use at the same time. Inserting USB will switch over to the configuration-free USB serial port (the communication rate will not be affected by the selected baud rate);
• The two RS485 ports are internally connected for easy wiring (or pull up, pull down, and termination resistors).

The CDBUS Bridge has two modes, which are selected by the switch:

git clone --recurse-submodules https://github.com/dukelec/cdbus_bridge.git

• Linux: pip3 install pycrc pyserial
• Mac: pip3 install readline pycrc pyserial
• Windows: pip3 install pyreadline pycrc pyserial

Please refer scripts' --help message and the Readme.md under sw/ folder, e.g.:

cd sw/cdbus_tools/
./cdbus_terminal.py --help

Note: The default is 3 seconds for bootloader mode on power-on. The status light will flash when it jumps to the main program. Please use the relevant script tool (except IAP) after this.