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  • I am not sure how tjis about Arduino? Commented Oct 27 at 12:07
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    rohit, Please expand your comment. Isn't a question about using any Arduino as a host USB port "about Arduino" ? I am a somewhat new Arduino forum participant and maybe I don't understand its boundaries. Commented Oct 27 at 13:40
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    Why can't you use the provided example USBFTDILoopback as a starting point? Commented Oct 27 at 20:11
  • Edgar, I looked at this example, and I think I might use it. The problem for me is that it is written (I think) for a Teensy or Leonardo board, both of which I have no experience with.. Also, there is no clear explanation of what the program is supposed to do (la common short-coming many Examples). In this regard, I have been misled a number of times by a common ambiguity in USB applications between USB Hosts and Devices. TBD.... Commented Oct 27 at 20:20
  • Edgar, Yes, I know this example is in the Host library, but due to my inexperience I cannot tell, from the code alone, whether the Arduino (Teensy or Leo) is acting as the Host or Device in the overall loopback scheme. The comments do not state the functionality explicitly. However, if YOU can tell me that the Arduino is acting as the Host, I will give this example serious consideration. TBC...... Commented Oct 27 at 20:28