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Code Issues Releases Wiki Activity

Try to calculate fat, water, muscle and bone for inlife

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This commit is contained in:
Erik Johansson
2018-11-20 11:34:41 +01:00
parent 967d720478
commit 44773dee1f
3 changed files with 46 additions and 0 deletions
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27
android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothInlife.java
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@@ -20,7 +20,9 @@ import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCharacteristic;
import android.content.Context;
import com.health.openscale.core.OpenScale;
import com.health.openscale.core.datatypes.ScaleMeasurement;
import com.health.openscale.core.datatypes.ScaleUser;
import com.health.openscale.core.utils.Converters;
import java.util.UUID;
@@ -84,9 +86,34 @@ public class BluetoothInlife extends BluetoothCommunication {
}
float weight = Converters.fromUnsignedInt16Be(data, 2) / 10.0f;
float lbm = Converters.fromUnsignedInt24Be(data, 4) / 1000.0f;
final ScaleUser selectedUser = OpenScale.getInstance().getSelectedScaleUser();
switch (selectedUser.getActivityLevel()) {
case SEDENTARY:
case MILD:
break;
case MODERATE:
lbm *= 1.0427f;
break;
case HEAVY:
case EXTREME:
lbm *= 1.0958f;
break;
}
float fatKg = weight - lbm;
float fat = (fatKg / weight) * 100.0f;
float water = (0.73f * (weight - fatKg) / weight) * 100.0f;
float muscle = (0.548f * lbm / weight) * 100.0f;
float bone = 0.05158f * lbm;
ScaleMeasurement measurement = new ScaleMeasurement();
measurement.setWeight(weight);
measurement.setFat(fat);
measurement.setWater(water);
measurement.setMuscle(muscle);
measurement.setBone(bone);
addScaleData(measurement);
}

11
android_app/app/src/main/java/com/health/openscale/core/utils/Converters.java
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@@ -284,10 +284,21 @@ public class Converters {
return value;
}
public static int fromSignedInt24Be(byte[] data, int offset) {
int value = data[offset] << 16;
value += (data[offset + 1] & 0xFF) << 8;
value += data[offset + 2] & 0xFF;
return value;
}
public static int fromUnsignedInt24Le(byte[] data, int offset) {
return fromSignedInt24Le(data, offset) & 0xFFFFFF;
}
public static int fromUnsignedInt24Be(byte[] data, int offset) {
return fromSignedInt24Be(data, offset) & 0xFFFFFF;
}
public static int fromSignedInt32Le(byte[] data, int offset) {
int value = data[offset + 3] << 24;
value += (data[offset + 2] & 0xFF) << 16;

8
android_app/app/src/test/java/com/health/openscale/ConvertersTest.java
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@@ -133,10 +133,18 @@ public class ConvertersTest {
assertEquals(0x0010fcfe, Converters.fromSignedInt24Le(data, 1));
assertEquals(0x007f10fc, Converters.fromSignedInt24Le(data, 2));
assertEquals(0xfffdfefc, Converters.fromSignedInt24Be(data, 0));
assertEquals(0xfffefc10, Converters.fromSignedInt24Be(data, 1));
assertEquals(0xfffc107f, Converters.fromSignedInt24Be(data, 2));
assertEquals(0xfcfefd, Converters.fromUnsignedInt24Le(data, 0));
assertEquals(0x10fcfe, Converters.fromUnsignedInt24Le(data, 1));
assertEquals(0x7f10fc, Converters.fromUnsignedInt24Le(data, 2));
assertEquals(0xfdfefc, Converters.fromUnsignedInt24Be(data, 0));
assertEquals(0xfefc10, Converters.fromUnsignedInt24Be(data, 1));
assertEquals(0xfc107f, Converters.fromUnsignedInt24Be(data, 2));
assertEquals(-1234567,
Converters.fromSignedInt24Le(Converters.toInt32Le(-1234567), 0));
}