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Code Issues Releases Wiki Activity

if the Mi Scale device is not already initialized then set weight measurement on and set the current time

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This commit is contained in:
OliE
2016-12-20 19:24:02 +01:00
parent 5227e6f0e3
commit 4613afd3e3
1 changed files with 105 additions and 50 deletions
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155
android_app/app/src/main/java/com/health/openscale/core/BluetoothMiScale.java
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@@ -53,8 +53,9 @@ public class BluetoothMiScale extends BluetoothCommunication {
private Handler searchHandler;
private Context context;
private String btDeviceName;
private int nextState;
private boolean restartDiscovery;;
private int nextCmdState;
private int nextInitState;
private boolean initProcessOn;
public BluetoothMiScale(Context con) {
searchHandler = new Handler();
@@ -130,8 +131,9 @@ public class BluetoothMiScale extends BluetoothCommunication {
@Override
public void onServicesDiscovered(final BluetoothGatt gatt, int status) {
restartDiscovery = false;
nextState = 0;
nextCmdState = 0;
nextInitState = 0;
initProcessOn = false;
invokeNextBluetoothCmd(gatt);
}
@@ -140,9 +142,9 @@ public class BluetoothMiScale extends BluetoothCommunication {
BluetoothGattCharacteristic characteristic;
BluetoothGattDescriptor descriptor;
Log.d("BluetoothMiScale", "Bluetooth Cmd State: " + nextState);
Log.d("BluetoothMiScale", "Cmd State " + nextCmdState);
switch (nextState) {
switch (nextCmdState) {
case 0:
// read device time
characteristic = gatt.getService(WEIGHT_MEASUREMENT_SERVICE)
@@ -188,34 +190,93 @@ public class BluetoothMiScale extends BluetoothCommunication {
characteristic.setValue(new byte[]{0x03});
gatt.writeCharacteristic(characteristic);*/
break;
case 5:
// Stop state machine
break;
default:
Log.e("BluetoothMiScale", "Error invalid Bluetooth State");
break;
}
}
private void invokeInitBluetoothCmd(BluetoothGatt gatt) {
BluetoothGattCharacteristic characteristic;
BluetoothGattDescriptor descriptor;
initProcessOn = true;
Log.d("BluetoothMiScale", "Init State " + nextInitState);
switch (nextInitState) {
case 0:
// set current time
characteristic = gatt.getService(WEIGHT_MEASUREMENT_SERVICE)
.getCharacteristic(WEIGHT_MEASUREMENT_TIME_CHARACTERISTIC);
Log.d("BluetoothMiScale", "Set current time on Mi scale");
Calendar currentDateTime = Calendar.getInstance();
int year = currentDateTime.get(Calendar.YEAR);
byte month = (byte)(currentDateTime.get(Calendar.MONTH)+1);
byte day = (byte)currentDateTime.get(Calendar.DAY_OF_MONTH);
byte hour = (byte)currentDateTime.get(Calendar.HOUR_OF_DAY);
byte min = (byte)currentDateTime.get(Calendar.MINUTE);
byte sec = (byte)currentDateTime.get(Calendar.SECOND);
byte[] dateTimeByte = {(byte)(year), (byte)(year >> 8), month, day, hour, min, sec, 0x03, 0x00, 0x00};
characteristic.setValue(dateTimeByte);
gatt.writeCharacteristic(characteristic);
break;
case 1:
// set notification on for weight measurement history
characteristic = gatt.getService(WEIGHT_MEASUREMENT_SERVICE)
.getCharacteristic(WEIGHT_MEASUREMENT_HISTORY_CHARACTERISTIC);
gatt.setCharacteristicNotification(characteristic, true);
descriptor = characteristic.getDescriptor(WEIGHT_MEASUREMENT_CONFIG);
descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
gatt.writeDescriptor(descriptor);
break;
case 2:
// Set on history weight measurement
characteristic = gatt.getService(WEIGHT_MEASUREMENT_SERVICE)
.getCharacteristic(WEIGHT_MEASUREMENT_HISTORY_CHARACTERISTIC);
characteristic.setValue(new byte[]{(byte)0x01, (byte)0x96, (byte)0x8a, (byte)0xbd, (byte)0x62});
gatt.writeCharacteristic(characteristic);
break;
case 3:
initProcessOn = false;
stopSearching();
startSearching(btDeviceName);
break;
}
}
@Override
public void onDescriptorWrite(BluetoothGatt gatt,
BluetoothGattDescriptor descriptor,
int status) {
nextState++;
invokeNextBluetoothCmd(gatt);
if (initProcessOn) {
nextInitState++;
invokeInitBluetoothCmd(gatt);
} else {
nextCmdState++;
invokeNextBluetoothCmd(gatt);
}
}
@Override
public void onCharacteristicWrite (BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic,
int status) {
if (restartDiscovery) {
stopSearching();
startSearching(btDeviceName);
if (initProcessOn) {
nextInitState++;
invokeInitBluetoothCmd(gatt);
} else {
nextCmdState++;
invokeNextBluetoothCmd(gatt);
}
nextState++;
invokeNextBluetoothCmd(gatt);
}
@Override
@@ -229,9 +290,9 @@ public class BluetoothMiScale extends BluetoothCommunication {
if (currentYear != scaleYear) {
Log.d("BluetoothMiScale", "Current year and scale year is different");
setCurrentTimeOnDevice(gatt);
invokeInitBluetoothCmd(gatt);
} else {
nextState++;
nextCmdState++;
invokeNextBluetoothCmd(gatt);
}
}
@@ -241,10 +302,6 @@ public class BluetoothMiScale extends BluetoothCommunication {
BluetoothGattCharacteristic characteristic) {
final byte[] data = characteristic.getValue();
Log.d("BluetoothMiScale", "Char changed");
printByteInHex(data);
if (data != null && data.length > 0) {
if (data.length == 20) {
final byte[] firstWeight = Arrays.copyOfRange(data, 0, 10);
@@ -260,29 +317,6 @@ public class BluetoothMiScale extends BluetoothCommunication {
}
}
private void setCurrentTimeOnDevice(BluetoothGatt gatt) {
// set current time
BluetoothGattCharacteristic characteristic = gatt.getService(WEIGHT_MEASUREMENT_SERVICE)
.getCharacteristic(WEIGHT_MEASUREMENT_TIME_CHARACTERISTIC);
Log.d("BluetoothMiScale", "Set current time on Mi scale");
Calendar currentDateTime = Calendar.getInstance();
int year = currentDateTime.get(Calendar.YEAR);
byte month = (byte)(currentDateTime.get(Calendar.MONTH)+1);
byte day = (byte)currentDateTime.get(Calendar.DAY_OF_MONTH);
byte hour = (byte)currentDateTime.get(Calendar.HOUR_OF_DAY);
byte min = (byte)currentDateTime.get(Calendar.MINUTE);
byte sec = (byte)currentDateTime.get(Calendar.SECOND);
byte[] dateTimeByte = {(byte)(year), (byte)(year >> 8), month, day, hour, min, sec, 0x03, 0x00, 0x00};
restartDiscovery = true;
characteristic.setValue(dateTimeByte);
gatt.writeCharacteristic(characteristic);
}
private void parseBytes(byte[] weightBytes) {
try {
float weight = 0.0f;
@@ -322,17 +356,38 @@ public class BluetoothMiScale extends BluetoothCommunication {
String date_string = year + "/" + month + "/" + day + "/" + hours + "/" + min;
Date date_time = new SimpleDateFormat("yyyy/MM/dd/HH/mm").parse(date_string);
ScaleData scaleBtData = new ScaleData();
// Is the year plausible? Check if the year is in the range of 20 years...
if (validateDate(date_time, 20)) {
ScaleData scaleBtData = new ScaleData();
scaleBtData.weight = weight;
scaleBtData.date_time = date_time;
scaleBtData.weight = weight;
scaleBtData.date_time = date_time;
callbackBtHandler.obtainMessage(BluetoothCommunication.BT_RETRIEVE_SCALE_DATA, scaleBtData).sendToTarget();
callbackBtHandler.obtainMessage(BluetoothCommunication.BT_RETRIEVE_SCALE_DATA, scaleBtData).sendToTarget();
} else {
Log.e("BluetoothMiScale", "Invalid weight year " + year);
}
}
} catch (ParseException e) {
callbackBtHandler.obtainMessage(BluetoothCommunication.BT_UNEXPECTED_ERROR, "Error while decoding bluetooth date string (" + e.getMessage() + ")").sendToTarget();
}
}
public boolean validateDate(Date weightDate, int range) {
Calendar currentDatePos = Calendar.getInstance();
currentDatePos.add(Calendar.YEAR, range);
Calendar currentDateNeg = Calendar.getInstance();
currentDateNeg.add(Calendar.YEAR, -range);
if (weightDate.before(currentDatePos.getTime()) && weightDate.after(currentDateNeg.getTime())) {
return true;
}
return false;
}
private boolean isBitSet(byte value, int bit) {
return (value & (1 << bit)) != 0;
}