Fully working version of SeleneGuide

This commit is the first fully working version of the selene guide
driver.

db/seleneGuide.db

@@ -0,0 +1,24 @@
+# The fields "RBV" of the "seleneOffsetAxis" motor record are relative positions
+# (see README.md). THis PV provides in addition the "raw" encoder value read
+# directly from the motor controller. Due to the way the motor record and asyn
+# motor code is architectured, this PV is also provided for the virtual 
+# "seleneLiftAxis" and "seleneAngleAxis". However, it has no meaning for these
+# two axes, hence the record value is undefined.
+record(ai, "$(INSTR)$(M):AbsolutePositionRBV")
+{
+    field(DTYP, "asynFloat64")
+    field(INP,  "@asyn($(CONTROLLER),$(AXIS)) MOTOR_ABSOLUTE_POSITION_RBV")
+    field(SCAN, "I/O Intr")
+}
+
+# Setting this PV to "1" causes a "normalization" of the virtual and offset axes:
+# Lift and angle are recalculated based on the position of the central offset 
+# axes 3 and 4 (whose value is then correspondingly set to 0) and the other offset
+# axes positions are recalculated accordingly. The normalization can be triggered
+# from any of the offset or the lift or the angle axis.
+record(longout, "$(INSTR)$(M):Normalize") {
+    field(DTYP, "asynInt32")
+    field(OUT, "@asyn($(CONTROLLER),$(AXIS),1) NORMALIZE")
+    field(VAL, "1")
+    field(PINI, "NO")
+}