Index: firmware/App/DDCommon.h
===================================================================
diff -u -r4e6f6747a1553ddab0b4b95c9fb158e4562cd408 -r1eb57936e55314b89912f06cd634a17e4a4ed999
--- firmware/App/DDCommon.h	(.../DDCommon.h)	(revision 4e6f6747a1553ddab0b4b95c9fb158e4562cd408)
+++ firmware/App/DDCommon.h	(.../DDCommon.h)	(revision 1eb57936e55314b89912f06cd634a17e4a4ed999)
@@ -25,8 +25,9 @@
 #define DD_VERSION_MAJOR        0
 #define DD_VERSION_MINOR        0
 #define DD_VERSION_MICRO        0
-#define DD_VERSION_BUILD  52
+#define DD_VERSION_BUILD  73
 
+
 // ********** development build switches **********
 
 #ifndef _RELEASE_
@@ -51,6 +52,9 @@
 //Uncomment below for Maxon controller speed change
 #define __MAXON_SPEED_UPDATE__    1
 
+//UnComment below for DryBicarb testing
+//#define __DRY_BICARB__            1
+
 //Uncomment below to disable heaters debug message
 #define __HEATERS_DEBUG__         1
 
@@ -101,6 +105,20 @@
     U32 compatibilityRev;                   ///< DD compatibility revision.
 } DD_VERSIONS_T;
 
+/// Payload record structure for an FP versions message.
+typedef struct
+{
+    U08 major;                              ///< FP version major revision.
+    U08 minor;                              ///< FP version minor revision.
+    U08 micro;                              ///< FP version micro revision.
+    U16 build;                              ///< FP build version.
+    U08 fpgaId;                             ///< FP FPGA ID.
+    U08 fpgaMajor;                          ///< FP FPGA major revision.
+    U08 fpgaMinor;                          ///< FP FPGA minor revision.
+    U08 fpgaLab;                            ///< FP FPGA lab revision.
+    U32 compatibilityRev;                   ///< FP compatibility revision.
+} FP_VERSIONS_T;
+
 /// Record defining the fields in a UI version request message.
 typedef struct
 {