Fix StepDrive parameters

controls-constructor/src/commonMain/kotlin/space/kscience/controls/constructor/devices/StepDrive.kt

@@ -21,21 +21,26 @@ import kotlin.time.DurationUnit
  */
 public class StepDrive(
     context: Context,
-    ticksPerSecond: MutableDeviceState<Double>,
+    ticksPerSecond: Double,
     position: MutableDeviceState<Long> = MutableDeviceState(0),
-    target: MutableDeviceState<Long> = MutableDeviceState(0),
     private val writeTicks: suspend (ticks: Long, speed: Double) -> Unit = { _, _ -> },
 ) : DeviceConstructor(context) {
 
-    public val target: MutableDeviceState<Long> by property(MetaConverter.long, target)
+    public val target: MutableDeviceState<Long> by property(
+        MetaConverter.long,
+        MutableDeviceState<Long>(position.value)
+    )
 
-    public val speed: MutableDeviceState<Double> by property(MetaConverter.double, ticksPerSecond)
+    public val speed: MutableDeviceState<Double> by property(
+        MetaConverter.double,
+        MutableDeviceState<Double>(ticksPerSecond)
+    )
 
     public val position: DeviceState<Long> by property(MetaConverter.long, position)
 
     //FIXME round to zero problem
     private val ticker = onTimer(reads = setOf(target, position), writes = setOf(position)) { prev, next ->
-        val tickSpeed = ticksPerSecond.value
+        val tickSpeed = speed.value
         val timeDelta = (next - prev).toDouble(DurationUnit.SECONDS)
         val ticksDelta: Long = target.value - position.value
         val steps: Long = when {

demo/constructor/src/jvmMain/kotlin/LinearDriveCalibration.kt

@@ -1,24 +1,26 @@
 package space.kscience.controls.demo.constructor
 
 import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.ensureActive
 import space.kscience.controls.constructor.DeviceConstructor
-import space.kscience.controls.constructor.MutableDeviceState
+import space.kscience.controls.constructor.collectValuesIn
 import space.kscience.controls.constructor.device
 import space.kscience.controls.constructor.devices.LimitSwitch
 import space.kscience.controls.constructor.devices.StepDrive
 import space.kscience.controls.constructor.models.MutableRangeState
 import space.kscience.controls.manager.DeviceManager
 import space.kscience.dataforge.context.Context
+import kotlin.time.Duration.Companion.seconds
 
-private val ticksPerSecond = MutableDeviceState(3000.0)
+private val ticksPerSecond = 3000.0
 
 class LinearStepDrive(
     context: Context,
     drive: StepDrive,
     atStart: LimitSwitch,
     atEnd: LimitSwitch,
-):DeviceConstructor(context){
+) : DeviceConstructor(context) {
     val drive by device(drive)
     val atStart by device(atStart)
     val atEnd by device(atEnd)
@@ -35,32 +37,41 @@ fun LinearStepDrive(
     atEnd = LimitSwitch(context, position.atEnd)
 )
 
-suspend fun LinearStepDrive.calibrate(step: Long = 10): ClosedRange<Long> = coroutineScope{
-    do{
-        ensureActive()
-        drive.target.value += step
-    } while (!atEnd.locked.value)
-
-    val end = drive.position.value
-
-    do{
+suspend fun LinearStepDrive.calibrate(step: Long = 10): ClosedRange<Long> = coroutineScope {
+    do {
         ensureActive()
         drive.target.value -= step
+        delay((step / ticksPerSecond).seconds)
     } while (!atStart.locked.value)
 
     val start = drive.position.value
 
+
+    do {
+        ensureActive()
+        drive.target.value += step
+        delay((step / ticksPerSecond).seconds)
+    } while (!atEnd.locked.value)
+
+    val end = drive.position.value
+
     return@coroutineScope start..end
 }
 
 suspend fun main() = coroutineScope {
-    val context = Context{
+    val context = Context {
         plugin(DeviceManager)
     }
 
-    val positionModel = MutableRangeState<Long>(0L, -1002L..1012L)
+    val positionModel = MutableRangeState<Long>(0L, -1000L..1012L)
 
     val linearStepDrive = LinearStepDrive(context, positionModel)
 
+    val printJob = linearStepDrive.drive.target.collectValuesIn(this){
+        println("Move to $it")
+    }
+
     println(linearStepDrive.calibrate())
+
+    printJob.cancel()
 }

demo/constructor/src/jvmMain/kotlin/Plotter.kt

@@ -83,7 +83,7 @@ private suspend fun Plotter.square(xRange: IntRange, yRange: IntRange) {
 
 private val xRange = NumericalValue<Meters>(-0.5)..NumericalValue<Meters>(0.5)
 private val yRange = NumericalValue<Meters>(-0.5)..NumericalValue<Meters>(0.5)
-private val ticksPerSecond = MutableDeviceState(3000.0)
+private const val ticksPerSecond = 3000.0
 private val step = NumericalValue<Degrees>(1.8)