Add TX-buffer for MarlinSerial

AnHardt / Marlin

Reprap FW with look ahead. SDcard and LCD support. It works on Gen6, Ultimaker, RAMPS and Sanguinololu

GNU General Public License v3.0

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Closed AnHardt closed 8 years ago

AnHardt commented 8 years ago

Add TX-buffer for MarlinSerial Similar to the current Arduino HardwareSerial but with max. 256 byte buffersize.

AnHardt commented 8 years ago

Updated, rebased and separated flushTX() from flush().