add command to read current dac values

app/src/main/java/com/example/hpostesting/presentation/autodac/AutoDacFragment.kt

@@ -55,6 +55,10 @@ class AutoDacFragment : Fragment() {
             binding.btnSubmit.visibility = View.GONE
             runAutoDacCommand()
         }
+        binding.btnReadDac.setOnClickListener {
+            binding.btnReadDac.visibility = View.GONE
+            readCurrentDACValuesCommand()
+        }
     }
 
     private fun observeViewModel() {
@@ -126,6 +130,20 @@ class AutoDacFragment : Fragment() {
             })
     }
 
+    private fun readCurrentDACValuesCommand() {
+        autoDacViewModel.progressBar.postValue(true)
+        (activity as AutoDacActivity).mService.sendAndListenToHemoCube(
+            HemoCubeCommands.READ_DAC_COMMAND,
+            object : UsbServiceListener {
+                override fun onUsbRead(data: ByteArray?) {
+                }
+
+                override fun onUsbError(e: Exception?) {
+                    autoDacViewModel.progressBar.postValue(false)
+                }
+            })
+    }
+
     private fun listenToHemoCube() {
 
         val fullReadOutput = StringBuilder()

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

@@ -72,6 +72,20 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@id/tv_subtitle4" />
 
+    <Button
+        android:id="@+id/btn_read_dac"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="16dp"
+        android:layout_marginTop="24dp"
+        android:clickable="false"
+        android:gravity="center"
+        android:text="Read Current DAC Values"
+        android:textColor="@color/white"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tv_subtitle4" />
+
     <!--        <Button-->
     <!--            android:id="@+id/btn_read"-->
     <!--            android:layout_width="wrap_content"-->