ReachTargetVoltage: Convert to V3 analysis function

This allows us to set it in the wavebuilder again as we can only set V3
functions interactively due to 55ee1cc (Introduce Analysis functions
V3, 2018-01-26).

V1 and V2 functions are still executed from existing stimsets.

Packages/MIES/MIES_AnalysisFunctions.ipf

@@ -947,16 +947,10 @@ End
 /// Prerequisites:
 /// - Stimset with multiple but identical sweeps and testpulse-like shape. The
 ///   number of sweeps must be larger than the number of rows in the targetVoltages wave below.
-/// - This stimset must have this analysis function set for the "Pre DAQ" and the "Post Sweep" Event
 /// - Does not support DA/AD channels not associated with a MIES headstage (aka unassociated DA/AD Channels)
 /// - All active headstages must be in "Current Clamp"
 /// - An inital DAScale of -20pA is used, a fixup value of -100pA is used on the next sweep if the measured resistance is smaller than 20MOhm
-Function ReachTargetVoltage(panelTitle, eventType, ITCDataWave, headStage, realDataLength)
-	string panelTitle
-	variable eventType
-	Wave ITCDataWave
-	variable headstage, realDataLength
-
+Function ReachTargetVoltage(string panelTitle, STRUCT AnalysisFunction_V3& s)
 	variable sweepNo, index, i
 	variable amps
 	variable autoBiasCheck, holdingPotential
@@ -972,11 +966,11 @@ Function ReachTargetVoltage(panelTitle, eventType, ITCDataWave, headStage, realD
 
 	WAVE ampParam = GetAmplifierParamStorageWave(panelTitle)
 
-	switch(eventType)
+	switch(s.eventType)
 		case PRE_DAQ_EVENT:
-			targetVoltagesIndex[headstage] = -1
+			targetVoltagesIndex[s.headstage] = -1
 
-			if(DAG_GetHeadstageMode(panelTitle, headstage) != I_CLAMP_MODE)
+			if(DAG_GetHeadstageMode(panelTitle, s.headstage) != I_CLAMP_MODE)
 				printf "(%s) The analysis function %s does only work in clamp mode.\r", panelTitle, GetRTStackInfo(1)
 				ControlWindowToFront()
 				return 1
@@ -1012,7 +1006,7 @@ Function ReachTargetVoltage(panelTitle, eventType, ITCDataWave, headStage, realD
 			KillOrMoveToTrash(wv = GetAnalysisFuncDAScaleRes(panelTitle))
 			KillWindow/Z $RESISTANCE_GRAPH
 
-			SetDAScale(panelTitle, headstage, absolute=-20e-12)
+			SetDAScale(panelTitle, s.headstage, absolute=-20e-12)
 
 			PGC_SetAndActivateControl(panelTitle,"Check_DataAcq1_DistribDaq", val = 1)
 
@@ -1023,15 +1017,15 @@ Function ReachTargetVoltage(panelTitle, eventType, ITCDataWave, headStage, realD
 			return Nan
 			break
 		case POST_SWEEP_EVENT:
-			targetVoltagesIndex[headstage] += 1
+			targetVoltagesIndex[s.headstage] += 1
 			break
 		default:
 			ASSERT(0, "Unknown eventType")
 			break
 	endswitch
 
 	// only do something if we are called for the very last headstage
-	if(DAP_GetHighestActiveHeadstage(panelTitle) != headstage)
+	if(DAP_GetHighestActiveHeadstage(panelTitle) != s.headstage)
 		return NaN
 	endif