Kevin O'Connor 8ed1696624 gcode: Only write to the gcode pseudo-tty if it appears to be active
If there isn't a reader of the output pipe it can lead to the
generation of a large number of errors.  Only attempt to write if it
appears the pipe is active.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2020-08-06 14:21:08 -04:00
..
2020-06-15 17:15:53 -04:00