Tom Hohensee wrote:

Steve,
Serial out is the tty prefixed with cu.

./a.out/dev/cu.USA49W62P1.1

Right device, wrong reason. It's because "tty" is the prefix for devices that wait for DCD handshake before returning from open(). It's an ancient Unix convention.

  http://osdir.com/ml/hardware.gps.gpsd.devel/2005-04/msg00110.html

  -- GG

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