A daemon to provide a bridge between USB-Serial and an HTTP server on an internal TCP port.
The Opentrons OT-3 integrates a USB device port for connecting to a host computer. The USB-TCP Bridge is required to provide a connection between the USB port and the robot's internal HTTP server. This program initializes the port as a USB Gadget, and then relays data between the serial port and the internal NGINX connection.
Before launching the USB Bridge application, the correct drivers must be loaded to enable the USB UDC on the computer:
- A USB Device controller, likely
dwc3.dtoverlay=dwc3- after boot,
modprobe dwc3
- libcomposite, in order to activate and enumerate the UDC
modprobe licomposite