Specified port, COMX, does not exist (Windows) about serial HOT 5 CLOSED

Thanks for the report, that is definitely strange. Can other serial programs (pyserial) open it when it is COM20?

If you have any more information about how this might be resolved please let me know.

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I had actually tried it in pyserial just before I changed the port number and it opened it without error. It works on port numbers below COM10 and fails for everything COM10 and above. This must be some common Microsoft problem because I have seen it from other vendors in the past.

Edit: For some reason for port number above 9 you must use this notation "\.\COM10". But this notation also works for ports below 9. So if you start having this problem possibly just change the constructor to append "\." to portname.

microsoft support

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Just a confirmation over here: bakercp/ofxSerial#5 (comment)

@wjwwood Seems like the solution would be to take @anderwm 's approach and append "." in the win impl.

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what I used:
"string port = "";
port.append("\\.");
port.append("\");
port.append(devicesInfo[deviceIndx].getPort());
success = device.setup(port), 9600);"

learned that \ removes following char. thanks @bakercp

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I reproduced this and fixed it in #84, thanks guys!

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