USB: Virtual COM ports under different (Windows) operating systems and the driver problem

If you want to develop your own embedded hardware, you often need a communication interface to a host, usually a PC. In times where the classic but easy-to-handle RS232 interfaces are no longer standard components in modern computers, you basically have two options when it comes to wire-bound connections:

  • Use a USB to UART converter chip in your device
  • Go for native USB support by using a controller which has a USB (device) subsystem on board

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