2 iOS: add LSV point density config, remove auto/manual toggle

cue-ios/CueIOS/AppState.swift

@@ -1,6 +1,12 @@
 import Foundation
 import Observation
 
+enum LsvDensityMode: String, CaseIterable, Identifiable {
+    case ptsPerMv = "pts/mV"
+    case ptsPerSec = "pts/s"
+    var id: String { rawValue }
+}
+
 enum Tab: String, CaseIterable, Identifiable {
     case eis = "EIS"
     case lsv = "LSV"
@@ -38,12 +44,13 @@ final class AppState {
     // LSV
     var lsvPoints: [LsvPoint] = []
     var lsvPeaks: [LsvPeak] = []
-    var lsvManualPeaks: Bool = false
     var lsvTotal: UInt16 = 0
     var lsvStartV: String = "0"
     var lsvStopV: String = "500"
     var lsvScanRate: String = "50"
     var lsvRtia: LpRtia = .r10K
+    var lsvDensityMode: LsvDensityMode = .ptsPerMv
+    var lsvDensity: String = "1"
 
     // Amperometry
     var ampPoints: [AmpPoint] = []
@@ -171,9 +178,7 @@ final class AppState {
 
         case .lsvEnd:
             saveLsv()
-            if !lsvManualPeaks {
             lsvPeaks = detectLsvPeaks(lsvPoints)
-            }
             var st = "LSV complete: \(lsvPoints.count) points"
             if let s = phSlope, let o = phOffset, abs(s) > 1e-6 {
                 if let peak = detectQhqPeak(lsvPoints) {
@@ -300,13 +305,30 @@ final class AppState {
         send(buildSysexStartSweep())
     }
 
+    func lsvCalcPoints() -> UInt16 {
+        let vs = Float(lsvStartV) ?? 0
+        let ve = Float(lsvStopV) ?? 500
+        let sr = Float(lsvScanRate) ?? 50
+        let d = Float(lsvDensity) ?? 1
+        let range = abs(ve - vs)
+        let raw: Float
+        switch lsvDensityMode {
+        case .ptsPerMv:
+            raw = range * d
+        case .ptsPerSec:
+            raw = abs(sr) < 0.001 ? 2 : (range / abs(sr)) * d
+        }
+        return max(2, min(500, UInt16(raw)))
+    }
+
     func startLSV() {
         lsvPoints.removeAll()
         let vs = Float(lsvStartV) ?? 0
         let ve = Float(lsvStopV) ?? 500
         let sr = Float(lsvScanRate) ?? 50
+        let n = lsvCalcPoints()
         send(buildSysexGetTemp())
-        send(buildSysexStartLsv(vStart: vs, vStop: ve, scanRate: sr, lpRtia: lsvRtia))
+        send(buildSysexStartLsv(vStart: vs, vStop: ve, scanRate: sr, lpRtia: lsvRtia, numPoints: n))
     }
 
     func startAmp() {

cue-ios/CueIOS/Models/Protocol.swift

@@ -307,12 +307,13 @@ func buildSysexGetConfig() -> [UInt8] {
     [0xF0, sysexMfr, CMD_GET_CONFIG, 0xF7]
 }
 
-func buildSysexStartLsv(vStart: Float, vStop: Float, scanRate: Float, lpRtia: LpRtia) -> [UInt8] {
+func buildSysexStartLsv(vStart: Float, vStop: Float, scanRate: Float, lpRtia: LpRtia, numPoints: UInt16) -> [UInt8] {
     var sx: [UInt8] = [0xF0, sysexMfr, CMD_START_LSV]
     sx.append(contentsOf: encodeFloat(vStart))
     sx.append(contentsOf: encodeFloat(vStop))
     sx.append(contentsOf: encodeFloat(scanRate))
     sx.append(lpRtia.rawValue)
+    sx.append(contentsOf: encodeU16(numPoints))
     sx.append(0xF7)
     return sx
 }

cue-ios/CueIOS/Views/LSVView.swift

@@ -41,18 +41,17 @@ struct LSVView: View {
                 LabeledPicker("RTIA", selection: $state.lsvRtia, items: LpRtia.allCases) { $0.label }
                     .frame(width: 120)
 
+                LabeledPicker("Density", selection: $state.lsvDensityMode, items: LsvDensityMode.allCases) { $0.rawValue }
+                    .frame(width: 100)
+
+                LabeledField("Value", text: $state.lsvDensity, width: 60)
+
+                Text("\(state.lsvCalcPoints()) pts")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+
                 Button("Start LSV") { state.startLSV() }
                     .buttonStyle(ActionButtonStyle(color: .green))
-
-                Button(state.lsvManualPeaks ? "Manual" : "Auto") {
-                    state.lsvManualPeaks.toggle()
-                    if state.lsvManualPeaks {
-                        state.lsvPeaks.removeAll()
-                    } else {
-                        state.lsvPeaks = detectLsvPeaks(state.lsvPoints)
-                    }
-                }
-                .font(.caption)
             }
             .padding(.horizontal)
             .padding(.vertical, 8)