V4.1.10a - Added heart rate readings frozen fault warning.

app/src/main/AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:versionCode="123"
+    android:versionCode="124"
-    android:versionName="4.1.9">
+    android:versionName="4.1.10a">
     <!-- android:allowBackup="false" -->
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

app/src/main/java/uk/org/openseizuredetector/MainActivity.java

@@ -853,9 +853,9 @@ public class MainActivity extends AppCompatActivity {
                     // Fault Conditions - We override the values in the UI because we do not know
                     // if the stored ones are correct or not with a fault present.
                     if ((mConnection.mSdServer.mSdData.alarmState == 4) ||
-                            (mConnection.mSdServer.mSdData.alarmState == 7)) {
+                            (mConnection.mSdServer.mSdData.alarmState == 7) || mConnection.mSdServer.mSdData.mHrFrozenFaultStanding) {
                         tv = (TextView) findViewById(R.id.alarmTv);
-                        if (mConnection.mSdServer.mSdData.alarmState == 4) {
+                        if (mConnection.mSdServer.mSdData.alarmState == 4 || mConnection.mSdServer.mSdData.mHrFrozenFaultStanding) {
                             tv.setText(R.string.Fault);
                             tv.setBackgroundColor(warnColour);
                             tv.setTextColor(warnTextColour);
@@ -876,7 +876,7 @@ public class MainActivity extends AppCompatActivity {
                         tv.setTextColor(warnTextColour);
 
                         tv = (TextView) findViewById(R.id.pebbleTv);
-                        tv.setText(getString(R.string.HR_Equals) + " --- bpm\n"+getString(R.string.o2_sat)+" = --- %");
+                        //tv.setText(getString(R.string.HR_Equals) + " --- bpm\n"+getString(R.string.o2_sat)+" = --- %");
                         tv.setBackgroundColor(warnColour);
                         tv.setTextColor(warnTextColour);
 

app/src/main/java/uk/org/openseizuredetector/SdData.java

@@ -99,6 +99,7 @@ public class SdData implements Parcelable {
 
     public CircBuf mAdaptiveHrBuf;
     public CircBuf mAverageHrBuf;
+    public boolean mHrFrozenFaultStanding = false;
     int mNsamp = 0;
 
     /* Analysis results */

app/src/main/java/uk/org/openseizuredetector/SdDataSource.java

@@ -104,6 +104,10 @@ public abstract class SdDataSource {
     private int mAlarmCount;
     protected String mBleDeviceAddr;
     protected String mBleDeviceName;
+    private double mLastHrValue;
+    private Time mHrStatusTime;
+    private double mHrFrozenPeriod = 60; // seconds
+    private boolean mHrFrozenAlarm;
 
 
     public SdDataSource(Context context, Handler handler, SdDataReceiver sdDataReceiver) {
@@ -163,6 +167,12 @@ public abstract class SdDataSource {
             Log.v(TAG, "start(): status timer already running.");
             mUtil.writeToSysLogFile("SdDataSource.start() - status timer already running??");
         }
+
+        // Initialise time we last received a change in HR value.
+        mHrStatusTime = new Time(Time.getCurrentTimezone());
+        mHrStatusTime.setToNow();
+        mLastHrValue = -1;
+
         if (mFaultCheckTimer == null) {
             Log.v(TAG, "start(): starting alarm check timer");
             mUtil.writeToSysLogFile("SdDataSource.start() - starting alarm check timer");
@@ -779,6 +789,21 @@ public abstract class SdDataSource {
             //Log.v(TAG, "faultCheck() - watch app not running so not doing anything");
             mAlarmCount = 0;
         }
+
+        if (mSdData.mHRAlarmActive && mHrFrozenAlarm) {
+            if (mSdData.mHR != mLastHrValue) {
+                mLastHrValue = mSdData.mHR;
+                mHrStatusTime = tnow;
+                mSdData.mHrFrozenFaultStanding = false;
+            } else {
+                tdiff = (tnow.toMillis(false) - mHrStatusTime.toMillis(false));
+                if (tdiff > mHrFrozenPeriod *1000.) {
+                    mSdData.mHrFrozenFaultStanding = true;
+                } else {
+                    mSdData.mHrFrozenFaultStanding = false;
+                }
+            }
+        }
     }
 
     void nnAnalysis() {
@@ -971,6 +996,10 @@ public abstract class SdDataSource {
                 Log.v(TAG, "updatePrefs() HRNullAsAlarm = " + mSdData.mHRNullAsAlarm);
                 mUtil.writeToSysLogFile( "updatePrefs() HRNullAsAlarm = " + mSdData.mHRNullAsAlarm);
 
+                mHrFrozenAlarm = SP.getBoolean("HrFrozenAlarm", true);
+                Log.v(TAG, "updatePrefs() - mHrFrozenAlarm = " + mHrFrozenAlarm);
+                mUtil.writeToSysLogFile("updatePrefs() - mHrFrozenAlarm = " + mHrFrozenAlarm);
+
                 prefStr = SP.getString("HRThreshMin", "SET_FROM_XML");
                 mSdData.mHRThreshMin = (short) Integer.parseInt(prefStr);
                 Log.v(TAG, "updatePrefs() HRThreshMin = " + mSdData.mHRThreshMin);

app/src/main/java/uk/org/openseizuredetector/SdServer.java

@@ -774,7 +774,7 @@ public class SdServer extends Service implements SdDataReceiver {
 
 
         // Fault
-        if ((sdData.alarmState) == 4 || (sdData.alarmState == 7) || (sdData.mHRFaultStanding)) {
+        if ((sdData.alarmState) == 4 || (sdData.alarmState == 7) || (sdData.mHRFaultStanding) || (sdData.mHrFrozenFaultStanding)) {
             sdData.alarmPhrase = "FAULT";
             //writeAlarmToSD();
             faultWarningBeep();

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

@@ -3,6 +3,7 @@
     <string name="app_name">OpenSeizureDetector</string>
     <string name="changelog">
         "\n
+        \nV4.1.10 - Added warning if heart rate readings freeze and do not change for more than 1 minute.
         \nV4.1.9 - Fixed problem with average heart rate alarm
         Fixed issue with phone data source generating continuous alarms for Heart Rate or O2Sat
         Fixed a small number of user reported issues (https://github.com/OpenSeizureDetector/Android_Pebble_SD/issues?q=is%3Aissue+milestone%3AV4.1.8)
@@ -499,4 +500,6 @@
     <string name="export_data_menuItem">Export Data</string>
     <string name="data_exported_ok">Data Exported OK</string>
     <string name="error_exporting_data">*** ERROR Exporting Data ***</string>
+    <string name="HrFrozenTitle">Heart Rate measurement Frozen Warning</string>
+    <string name="HrFrozenSummary">Produce a fault warning if the heart rate measurement freezes and does not change for more than 1 minute.</string>
 </resources>

app/src/main/res/xml/seizure_detector_prefs.xml

@@ -83,6 +83,11 @@
             android:key="HRAlarmActive"
             android:summary="@string/HRAlarmEnabledSummary"
             android:title="@string/HRAlarmEnabledTitle" />
+        <CheckBoxPreference
+            android:defaultValue="true"
+            android:key="HrFrozenAlarm"
+            android:summary="@string/HrFrozenSummary"
+            android:title="@string/HrFrozenTitle" />
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="HRNullAsAlarm"