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Add RenphoScale/ES-WBE28 #1108

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Add RenphoScale/ES-WBE28 #1108

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7 changes: 7 additions & 0 deletions android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothFactory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -152,6 +152,13 @@ public static BluetoothCommunication createDeviceDriver(Context context, String
if (deviceName.equals("AE BS-06")) {
return new BluetoothActiveEraBF06(context);
}
if (deviceName.equals("Renpho-Scale")) {
/* Driver for Renpho ES-WBE28, which has device name of "Renpho-Scale".
"Renpho-Scale" is quite generic, not sure if other Renpho scales with different
protocol match this name.
*/
return new BluetoothRenphoScale(context);
}
return null;
}

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255 changes: 255 additions & 0 deletions android_app/app/src/main/java/com/health/openscale/core/bluetooth/BluetoothRenphoScale.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,255 @@
package com.health.openscale.core.bluetooth;

import static com.health.openscale.core.utils.Converters.toCentimeter;

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 java.util.Calendar;
import java.util.Date;
import java.util.UUID;
import java.time.LocalDateTime;

import timber.log.Timber;

public class BluetoothRenphoScale extends BluetoothCommunication {

private static final UUID SERV_BODY_COMP = BluetoothGattUuid.fromShortCode(0x181b);
private static final UUID SERV_USER_DATA = BluetoothGattUuid.fromShortCode(0x181c);
private static final UUID SERV_WEIGHT_SCALE = BluetoothGattUuid.fromShortCode(0x181d);
private static final UUID SERV_CUR_TIME = BluetoothGattUuid.fromShortCode(0x1805);

// Custom characteristic nr. 0 (Service: body comp)
// Written data was always the same on all my tests
private static final UUID CHAR_CUSTOM0_NOTIFY = BluetoothGattUuid.fromShortCode(0xffe1);
private static final UUID CHAR_CUSTOM0 = BluetoothGattUuid.fromShortCode(0xffe2);
private static final byte[] CHAR_CUSTOM0_MAGIC0 = new byte[]{(byte) 0x10, (byte) 0x01, (byte) 0x00, (byte) 0x11};
private static final byte[] CHAR_CUSTOM0_MAGIC1 = new byte[]{(byte) 0x03, (byte) 0x00, (byte) 0x01, (byte) 0x04};

// Custom characteristic nr. 1 (Service: user data)
// Written data was always the same on all my tests
private static final UUID CHAR_CUSTOM1_NOTIFY = BluetoothGattUuid.fromShortCode(0x2a9f);
private static final UUID CHAR_CUSTOM1 = BluetoothGattUuid.fromShortCode(0x2a9f);
private static final byte[] CHAR_CUSTOM1_MAGIC = new byte[]{(byte) 0x02, (byte) 0xaa, (byte) 0x0f, (byte) 0x27};

// Service: body comp
private static final UUID CHAR_BODY_COMP_FEAT = BluetoothGattUuid.fromShortCode(0x2a9b);
private static final UUID CHAR_BODY_COMP_MEAS = BluetoothGattUuid.fromShortCode(0x2a9c);

// Service: user data
private static final UUID CHAR_GENDER = BluetoothGattUuid.fromShortCode(0x2a8c); // 0x00 male, 0x01 female
private static final UUID CHAR_HEIGHT = BluetoothGattUuid.fromShortCode(0x2a8e); // in cm. 177cm = {0xb1 0x00}
private static final UUID CHAR_BIRTH = BluetoothGattUuid.fromShortCode(0x2a85); // 2 bytes year, 1 byte month, 1 byte day of year (1-366)
private static final UUID CHAR_AGE = BluetoothGattUuid.fromShortCode(0x2a80); // 1 byte
private static final UUID CHAR_ATHLETE= BluetoothGattUuid.fromShortCode(0x2aff); // {0x0d 0x00} = Athlete; {0x03 0x00} = Not athlete

// Service: weight scale
private static final UUID CHAR_WEIGHT = BluetoothGattUuid.fromShortCode(0x2a9d); // {0x0d 0x00} = Athlete; {0x03 0x00} = Not athlete

// Curr time
private static final UUID CHAR_CUR_TIME = BluetoothGattUuid.fromShortCode(0x2a2b);
private static final UUID CHAR_ICCEDK = BluetoothGattUuid.fromShortCode(0xfff1);

/*
Despite notified data is discarded, notify must be set on
- 0x2a2b (CHAR_CUR_TIME)
- 0x2a9f (CHAR_CUSTOM1_NOTIFY)
- 0xfff1 (CHAR_ICCEDK)
- 0xffe1 (CHAR_CUSTOM0_NOTIFY)
*/

private ScaleUser user;

public BluetoothRenphoScale(Context context) {
super(context);
}

@Override
public String driverName() {
// Not sure of the driver name. Tested with ES-WBE28
return "RENPHO ES-WBE28";
}

@Override
protected boolean onNextStep(int stepNr) {
Timber.i("onNextStep(%d)", stepNr);

switch (stepNr) {
case 0:
user = OpenScale.getInstance().getSelectedScaleUser();
setNotificationOn(SERV_CUR_TIME, CHAR_CUR_TIME);
break;
case 1:
setIndicationOn(SERV_USER_DATA, CHAR_CUSTOM1_NOTIFY);
break;
case 2:
setNotificationOn(SERV_CUR_TIME, CHAR_ICCEDK);
break;
case 3:
setNotificationOn(SERV_BODY_COMP, CHAR_CUSTOM0_NOTIFY);
break;
case 4:
LocalDateTime now = LocalDateTime.now();

byte[] currtime = new byte[]{
(byte) (now.getYear() & 0xff), // Year LSB
(byte) (now.getYear() >> 8), // Year MSB
(byte) (now.getMonthValue()),
(byte) (now.getDayOfMonth()),
(byte) (now.getHour()),
(byte) (now.getMinute()),
(byte) (now.getSecond()),
(byte) (now.getDayOfWeek().getValue()), // 1 = Monday, 7 = Sunday
(byte) 0, // Fraction of seconds, unused
(byte) 0 // Reason of update: not specified

};

writeBytes(SERV_CUR_TIME, CHAR_CUR_TIME, currtime);
break;
case 5:
stopMachineState();
writeBytes(SERV_BODY_COMP, CHAR_CUSTOM0, CHAR_CUSTOM0_MAGIC0);
break;
case 6:
stopMachineState();
writeBytes(SERV_BODY_COMP, CHAR_CUSTOM0, CHAR_CUSTOM0_MAGIC1);
break;
case 7:
stopMachineState();
writeBytes(SERV_USER_DATA, CHAR_CUSTOM1, CHAR_CUSTOM1_MAGIC);
break;
case 8:
byte[] gender = new byte[]{(byte) (user.getGender().isMale() ? 0x00 : 0x01)};
writeBytes(SERV_USER_DATA, CHAR_GENDER, gender);
break;
case 9:
int height = (int) toCentimeter(user.getBodyHeight(), user.getMeasureUnit());
byte[] height_data = new byte[]{
(byte) (height & 0xff) , // Height, cm, LSB
(byte) (height >> 8) // Height, cm, MSB
};
writeBytes(SERV_USER_DATA, CHAR_HEIGHT, height_data);
break;
case 10:
Date dob_d = user.getBirthday();

// Needed to calculate DAY_OF_YEAR.
// Moreover, Date::getXXX() is deprecated and replaced by Calendar::get
Calendar dob = Calendar.getInstance();
dob.setTime(dob_d);

byte[] dob_data = new byte[]{
(byte) (dob.get(Calendar.YEAR) & 0xff), // Year LSB
(byte) (dob.get(Calendar.YEAR) >> 8), // Year MSB

// Calendar.JANUARY is zero, but scale needs Jan = 1, Dec = 12
(byte) (dob.get(Calendar.MONTH) - Calendar.JANUARY + 1),

// GATT spec says DAY_OF_MONTH (1-31) but Renpho app sends some strange values
(byte) dob.get(Calendar.DAY_OF_MONTH)
};
writeBytes(SERV_USER_DATA, CHAR_BIRTH, dob_data);
break;
case 11:
byte[] age = new byte[]{(byte) user.getAge()};
writeBytes(SERV_USER_DATA, CHAR_AGE, age);
break;
case 12:
byte[] athl = new byte[]{(byte) 0x03, (byte)0x00}; // Non athlete

switch (user.getActivityLevel()) {
case HEAVY:
case EXTREME:
athl[0] = (byte) 0x0d;
break;
}

writeBytes(SERV_USER_DATA, CHAR_ATHLETE, athl);
break;
case 13:
readBytes(SERV_BODY_COMP, CHAR_BODY_COMP_FEAT);
break;
case 14:
setNotificationOn(SERV_WEIGHT_SCALE, CHAR_WEIGHT);
break;
case 15:
setIndicationOn(SERV_BODY_COMP, CHAR_BODY_COMP_MEAS);
break;
case 16:
stopMachineState();
break;
default:
return false;
}
return true;
}

@Override
public void onBluetoothNotify(UUID characteristic, byte[] value) {
Timber.d("Received notification on UUID = %s", characteristic.toString());
for(int i = 0; i < value.length; i++) {
Timber.d("Byte %d = 0x%02x", i, value[i]);
}

switch (getStepNr()) {
case 6:
case 7:
case 8:
resumeMachineState();
break;
case 17:
if (characteristic.equals(CHAR_WEIGHT)) {
if (value[0] == 0x2e) {

float weight_kg = (Byte.toUnsignedInt(value[2])*256 + Byte.toUnsignedInt(value[1])) / 20.0f;

Timber.d("Weight = 0x%02x, 0x%02x = %f",value[1], value[2], weight_kg);
saveMeasurement(weight_kg);
resumeMachineState();

}
}
if (characteristic.equals(CHAR_BODY_COMP_MEAS)) {
// TODO
/*
Not yet decoded (it does not follow GATT Body Comp standard fields).
What I've found is:
byte 0 : Unknown (always zero?)
byte 1- 3 : Unknown
byte 4 : Unknown (always zero?)
byte 5 : "metabolic_age" in years
byte 6 : Unknown (always zero?)
byte 7 : "protein" in units of 0.1%
byte 8- 9 : "subcutaneous_fat" in units of 0.1%
byte 10 : "visceral_fat_grade" in unknown/absolute units
byte 11 : Unknown (always zero?)
byte 12 : int part of "lean_body_mass" in kg. Dunno where decimal digit is encoded.
bytes 13-16 : Unknown (some flags/counters?). These fields change even between identical measurements. byte 16 = (byte 14) + 2.
bytes 17-18 : "body_water" in units of 0.1%
*/
}
break;
}
}

/**
* Save a measurement from the scale to openScale.
*
* @param weightKg The weight, in kilograms
*/
private void saveMeasurement(float weightKg) {

final ScaleUser scaleUser = OpenScale.getInstance().getSelectedScaleUser();

Timber.d("Saving measurement for scale user %s", scaleUser);

final ScaleMeasurement btScaleMeasurement = new ScaleMeasurement();
btScaleMeasurement.setWeight(weightKg);

addScaleMeasurement(btScaleMeasurement);
}
}