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Support Forum » Can't open device "/dev/ttyCOM3"

December 30, 2009
by emh593
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I am getting the error can't open device "/dev/ttyCOM3", but my serial port is COM3. Is there an issue with this working on Windows 7 64-bit?

December 30, 2009
by Rick_S
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The /dev/tty is used for linux based systems. For windows pc's , just use COM3 in the -P parameter.

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