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Quote:
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Originally posted by shaneincottondale@Jan 12 2003, 12:00 PM
I have customers asking all the time for a USB to serial cable but I have yet to find one manufactured. Serial to USB, no problem....guess it's harder going the other way.
shane
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I think I've figured out why you can't go the other way. RS 232 serial ports don't have any intelligence built in them. USB has significant protocol intelligence built in. The USB to Serial adapters out there basically dumb-down the USB Host port to accept Serial communications, then "smarten" the inbound 232 signals to USB standards to have them look like they are coming from the dumb end of USB, the Device. If all you have is a 232 port, it would take basically another computer to be on the USB side to handle the protocol and pretend to be the USB Host controlling the interface. The cost would be very high. Basically you'd be buying a minimized pc with ports, USB Host logic and communications to act as a bridge. Not likely too many buyers.