Index: firmware/App/DDCommon.h
===================================================================
diff -u -r977f03e20990ed5579160b9b927df1c0f2428101 -r0a74bcce6674271e35d5154003dd6c25011f80f9
--- firmware/App/DDCommon.h	(.../DDCommon.h)	(revision 977f03e20990ed5579160b9b927df1c0f2428101)
+++ firmware/App/DDCommon.h	(.../DDCommon.h)	(revision 0a74bcce6674271e35d5154003dd6c25011f80f9)
@@ -57,6 +57,9 @@
 //Uncomment below for spent chamber filling
 #define __SPENT_CHAMBER_FILL__    1
 
+//Uncomment below for bicarb chamber filling
+#define __BICARB_CHAMBER_FILL__   1
+
 //Uncomment below if balancing chamber pressure alarm is required
 #define __BC_PRESSURE_ALARM__     1