diff -r e5254c6aa0c8 -r 01515349b30e src/hp34comm.h
--- a/src/hp34comm.h	Tue Oct 11 00:46:18 2016 +0200
+++ b/src/hp34comm.h	Tue Oct 11 21:44:04 2016 +0200
@@ -29,7 +29,7 @@
 
 
   
-  HPSerial(PinName rx, PinName tx);
+  HPSerial(PinName rx);
   
   bool cmd_available(void);
   bool pop(CMD& cmd);