added methods to parse read string from device into java objects + added progress bar

.idea/misc.xml

@@ -3,6 +3,7 @@
   <component name="DesignSurface">
     <option name="filePathToZoomLevelMap">
       <map>
+        <entry key="app/src/main/res/drawable/progressbar_drawable.xml" value="0.1885" />
         <entry key="app/src/main/res/font/inter_bold.xml" value="0.33487179487179486" />
         <entry key="app/src/main/res/layout/activity_main.xml" value="0.25" />
         <entry key="app/src/main/res/layout/activity_splash.xml" value="0.24375" />

app/build.gradle

@@ -44,6 +44,9 @@ dependencies {
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
 
+//    androidTestImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.6.1'
+
+
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.5.1"
     implementation 'com.opencsv:opencsv:4.6'
     implementation 'com.github.mik3y:usb-serial-for-android:3.4.6'

app/src/main/java/com/example/refactoredapp/data/Constants.kt

@@ -6,4 +6,6 @@ object Constants {
     const val WRITE_TIMEOUT_MILLIS = 60000   // 1 min
     const val READ_TIMEOUT_MILLIS = 60000   // 1 min
 
+//    const val TEST_RIGHT_TOTAL_PIXEL = 3694
+    const val TEST_RIGHT_TOTAL_PIXEL = 12
 }

app/src/main/java/com/example/refactoredapp/data/model/TestRightCommands.kt

@@ -16,4 +16,5 @@ enum class TestRightCommands(val command: String) {
     autoset("autoset\r"),
     print("print 239 2719\r"),
     print_all("print\r"),
+
 }

app/src/main/java/com/example/refactoredapp/data/model/TestRightDeviceConstants.kt

@@ -1,8 +1,8 @@
 package com.example.refactoredapp.data.model
 
 data class TestRightDeviceConstants(
-    val a: String,
-    val b: String,
+    var a: String,
+    var b: String,
     val c: String,
     val d: String
 )

app/src/main/java/com/example/refactoredapp/presentation/testRight/TestRightActivity.kt

@@ -66,13 +66,9 @@ class TestRightActivity : AppCompatActivity() {
         setContentView(binding.root)
         viewModel = ViewModelProvider(this, MyViewModelFactory(this.applicationContext))[TestRightViewModel::class.java]
 
-        connectUsb(false);
 
-//        if(connectUsb(false)) {
-//            moveToNext()
-//        } else {
-//            onBackPressed()
-//        }
+
+        connectUsb(false);
 
     }
 

app/src/main/java/com/example/refactoredapp/presentation/testRight/TestRightExpReference.kt

@@ -1,7 +1,6 @@
 package com.example.refactoredapp.presentation.testRight
 
 import android.os.Bundle
-import android.os.Handler
 import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
@@ -24,7 +23,8 @@ class TestRightExpReference : Fragment() {
 
     private val TAG = "TestRightExpReference"
 
-    var fullString: String = ""
+    val fullReadOutput = StringBuilder()
+    private var readingDeviceConstantInProgress = false
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
@@ -40,9 +40,13 @@ class TestRightExpReference : Fragment() {
         setupListeners()
 
         if (DataHolder.isReferenceTaken)
-            parentFragmentManager.beginTransaction().replace(R.id.fl_main, TestRightExpSample())
-                .commit()
+            moveToSamplePage()
 
+        if (viewModel.deviceConstant == null) {
+            binding.progressBar.visibility = View.VISIBLE
+            readingDeviceConstantInProgress = true
+            writeAndReadFromDevice(TestRightCommands.read)
+        }
     }
 
     private fun setupListeners() {
@@ -55,7 +59,8 @@ class TestRightExpReference : Fragment() {
                 getString(R.string.no),
                 object : MyDialogListener {
                     override fun onClickBtnOne() {
-                        startTakingReference()
+                        binding.progressBar.visibility = View.VISIBLE
+                        writeAndReadFromDevice(TestRightCommands.print_all)
                     }
 
                     override fun onClickBtnTwo() {}
@@ -75,11 +80,17 @@ class TestRightExpReference : Fragment() {
 //                    Log.d(TAG, "onUsbRead(data) call back called")
                     data?.let {
                         val stringData = String(it)
-//                        Log.d(TAG, stringData)
-                        fullString += stringData
+                        fullReadOutput.append(stringData)
 
-                        if(stringData.contains("OK")){
-                            viewModel.mapValues(fullString)
+                        if(stringData.contains("OK", true)){
+                            if (readingDeviceConstantInProgress) {
+                                readingDeviceConstantInProgress = false
+                                viewModel.mapDeviceConstants(fullReadOutput.toString())
+                            } else {
+                                viewModel.mapIntensityValues(fullReadOutput.toString(), true)
+                                moveToSamplePage()
+                            }
+                            binding.progressBar.visibility = View.GONE
                         }
                     }
 //                    val stringData = String(data!!)
@@ -99,16 +110,27 @@ class TestRightExpReference : Fragment() {
 //            Log.d(TAG, "clicked on text")
 //            val mService = (activity as TestRightActivity).mService
 //            mService.read()
-            Log.d(TAG, "FULL STRING IS -> $fullString")
-
+            Log.d(TAG, "FULL STRING IS -> $fullReadOutput")
         }
     }
 
-    private fun startTakingReference() {
+
+    private fun writeAndReadFromDevice(command: TestRightCommands) {
+        fullReadOutput.clear()
         val mService = (activity as TestRightActivity).mService
-        mService.eventDrivenWrite(TestRightCommands.print_all)
+        mService.eventDrivenWrite(command)
     }
 
+    private fun moveToSamplePage() {
+        parentFragmentManager.beginTransaction().replace(R.id.fl_main, TestRightExpSample())
+            .commit()
+    }
+
+//    private fun startReadingReference() {
+//        val mService = (activity as TestRightActivity).mService
+//        mService.eventDrivenWrite(TestRightCommands.print_all)
+//    }
+
 //    private fun startTakingReference() {
 //        val mService = (activity as TestRightActivity).mService
 //        mService.write(TestRightCommands.print)

app/src/main/java/com/example/refactoredapp/presentation/testRight/TestRightViewModel.kt

@@ -1,16 +1,107 @@
 package com.example.refactoredapp.presentation.testRight
 
+import android.util.Log
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.refactoredapp.data.Constants
+import com.example.refactoredapp.data.model.TestRightDeviceConstants
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlin.math.pow
 
 class TestRightViewModel : ViewModel() {
 
     var isReferenceDone = false
     var isServiceConnected = false
+    private val TAG = "TestRightViewModel"
+
     val isUsbConnected = MutableLiveData(false)
 
-    fun mapValues(fullString: String) {
-        TODO("Not yet implemented")
+    var deviceConstant: TestRightDeviceConstants? = null
+
+    /* Contains wavelength -> pixel no.*/
+    val wavelengthToPixelArray = ArrayList<ArrayList<Double>>()
+
+    /* (For reference/baseline) Contains pixel no. -> Intensity of light falling on that pixel */
+    val intensityReferenceArray = ArrayList<ArrayList<Double>>()
+
+    /* (For exp sample) Contains pixel no. -> Intensity of light falling on that pixel */
+    val intensitySampleArray = ArrayList<ArrayList<Double>>()
+
+    fun mapDeviceConstants(string: String) {
+//        viewModelScope.launch {
+        if (string.isNotEmpty()) {
+            val listOfStrings = string.split(",")
+            if (listOfStrings.size >= 4) {
+                deviceConstant = TestRightDeviceConstants(
+                    listOfStrings[0].trim(),
+                    listOfStrings[1].trim(),
+                    listOfStrings[2].trim(),
+                    listOfStrings[3].trim()
+                )
+            } else {
+                // Todo: Throws error
+            }
+        } else {
+            // Todo: Throws error (showing error if empty by using a mutable error string)
+        }
+//        }
     }
 
+    fun mapPixelNumberToWavelength() {
+//        viewModelScope.launch {
+        if (deviceConstant != null) {
+            for (x in 1..Constants.TEST_RIGHT_TOTAL_PIXEL) {
+                val wavelength: Double =
+                    (deviceConstant!!.a.toDouble() * (x.toDouble().pow((3).toDouble()))) +
+                            (deviceConstant!!.b.toDouble() * (x.toDouble().pow((2).toDouble()))) +
+                            (deviceConstant!!.c.toDouble() * x) +
+                            (deviceConstant!!.d.toDouble())
+
+                val temp = ArrayList<Double>(2)
+                temp.add(wavelength)
+                temp.add(x.toDouble())
+                wavelengthToPixelArray.add(temp)
+            }
+        } else {
+            // Todo: Throws error
+        }
+//        }
+    }
+
+    fun mapIntensityValues(fullString: String, isReference: Boolean) {
+//        viewModelScope.launch {
+        val listOfString = fullString.split("\n")
+        for (line in listOfString) {
+            if ("Buf" in line) {
+                /* Removing trailing spaces and "Buf" from the string then taking lhs & rhs of ':' */
+                val numbers = line.trim()
+                    .substring(3).split(":")
+                if (numbers.size >= 2) {
+                    val temp = ArrayList<Double>(2)
+                    temp.add(numbers[0].toDouble())
+                    temp.add(numbers[1].toDouble())
+                    if (isReference) intensityReferenceArray.add(temp)
+                    else intensitySampleArray.add(temp)
+                } else {
+                    // Todo: Error handling
+                }
+            }
+        }
+//    }
+    }
+
+
+//    val dispatcher = TestCoroutineDispatcher()
+//
+//    @Before
+//    fun setup() {
+//        Dispatchers.setMain(dispatcher)
+//    }
+//
+//    @After
+//    fun tearDown() {
+//        Dispatchers.resetMain()
+//    }
 }

app/src/main/res/drawable/progressbar_drawable.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<rotate xmlns:android="http://schemas.android.com/apk/res/android"
+    android:duration="4000"
+    android:fromDegrees="0"
+    android:pivotX="50%"
+    android:pivotY="50%"
+    android:toDegrees="360">
+
+    <shape
+        android:innerRadius="20dp"
+        android:shape="ring"
+        android:thickness="4dp"
+        android:useLevel="false">
+        <size
+            android:width="54dp"
+            android:height="54dp" />
+
+        <gradient
+            android:centerColor="#0288D1"
+            android:centerY="0.5"
+            android:endColor="#01579B"
+            android:startColor="#00ec7e2a"
+            android:type="sweep"
+            android:useLevel="false" />
+    </shape>
+
+</rotate>

app/src/main/res/layout/fragment_test_right_exp_reference.xml

@@ -12,21 +12,46 @@
             android:id="@+id/tv_title"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/hello_blank_fragment"
+            android:text="@string/Instructions"
             android:layout_margin="16dp"
+            style="@style/title1"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
-        <Button
-            android:id="@+id/btn_set_reference"
+        <TextView
+            android:id="@+id/tv_subtitle1"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="@string/set_reference"
+            android:text="@string/step1"
+            android:layout_marginTop="16dp"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="16dp"
+            style="@style/title2"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tv_title" />
+
+        <TextView
+            android:id="@+id/tv_subtitle2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/step2"
+            android:layout_marginTop="8dp"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="16dp"
+            style="@style/title2"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tv_subtitle1" />
+
+        <Button
+            android:id="@+id/btn_set_reference"
+            android:layout_width="172dp"
+            android:layout_height="wrap_content"
             android:layout_margin="16dp"
             android:clickable="false"
-            app:layout_constraintTop_toBottomOf="@id/tv_title"
-            app:layout_constraintStart_toStartOf="parent" />
-
+            android:text="@string/set_reference"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tv_subtitle2" />
 
         <Button
             android:id="@+id/btn_read"
@@ -38,6 +63,19 @@
             app:layout_constraintTop_toBottomOf="@id/btn_set_reference"
             app:layout_constraintStart_toStartOf="parent" />
 
+        <ProgressBar
+            android:id="@+id/progressBar"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_centerInParent="true"
+            android:indeterminate="true"
+            android:indeterminateDrawable="@drawable/progressbar_drawable"
+            android:visibility="gone"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"/>
+
     </androidx.constraintlayout.widget.ConstraintLayout>
 
 </layout>

app/src/main/res/values/strings.xml

@@ -18,4 +18,7 @@
     <string name="connect">Connect</string>
     <string name="connected">Connected</string>
     <string name="read">Read</string>
+    <string name="Instructions">Instructions</string>
+    <string name="step1"><b><u>Step 1</u>  : </b> Place the cuvette containing reference/baseline sample for referencing.</string>
+    <string name="step2"><b><u>Step 2</u>  : </b> Press the button below to start the device reading values.</string>
 </resources>