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Updated BLE data source to use neater 128 bit UUIDs (compatible with BangleJS v0.11)

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This commit is contained in:
Graham Jones
2023-10-04 22:24:20 +01:00
parent b339daa826
commit 26f181309a
2 changed files with 31 additions and 19 deletions
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48
app/src/main/java/uk/org/openseizuredetector/SdDataSourceBLE.java
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@@ -83,16 +83,17 @@ public class SdDataSourceBLE extends SdDataSource {
public static String SERV_DEV_INFO = "0000180a-0000-1000-8000-00805f9b34fb";
public static String SERV_HEART_RATE = "0000180d-0000-1000-8000-00805f9b34fb";
public static String SERV_OSD = "000085e9-0000-1000-8000-00805f9b34fb";
public static String CHAR_HEART_RATE_MEASUREMENT = "00002a37-0000-1000-8000-00805f9b34fb";
public static String SERV_OSD = "000085e9-0000-1000-8000-00805f9b34fb";
public static String CHAR_OSD_ACC_DATA = "000085e9-0001-1000-8000-00805f9b34fb";
public static String CHAR_OSD_BATT_DATA = "000085e9-0002-1000-8000-00805f9b34fb";
public static String CHAR_OSD_WATCH_ID = "000085e9-0003-1000-8000-00805f9b34fb";
public static String CHAR_OSD_WATCH_FW = "000085e9-0004-1000-8000-00805f9b34fb";
public static String CHAR_MANUF_NAME = "00002a29-0000-1000-8000-00805f9b34fb";
public static String CLIENT_CHARACTERISTIC_CONFIG = "00002902-0000-1000-8000-00805f9b34fb";
public static String CHAR_OSD_ACC_DATA = "000085ea-0000-1000-8000-00805f9b34fb";
public static String CHAR_OSD_BATT_DATA = "000085eb-0000-1000-8000-00805f9b34fb";
public final static UUID UUID_HEART_RATE_MEASUREMENT = UUID.fromString(CHAR_HEART_RATE_MEASUREMENT);
private BluetoothGatt mGatt;
private BluetoothGattCharacteristic mBattChar;
private BluetoothGattCharacteristic mOsdChar;
@@ -263,10 +264,13 @@ public class SdDataSourceBLE extends SdDataSource {
setCharacteristicNotification(gattCharacteristic,true);
}
else if (charUuidStr.equals(CHAR_OSD_BATT_DATA)) {
Log.v(TAG,"Saving battery characteristic for later");
Log.v(TAG, "Subscribing to battery change Notifications");
setCharacteristicNotification(gattCharacteristic,true);
}
//else if (charUuidStr.equals(CHAR_OSD_HR_DATA)) {
// Log.v(TAG, "Subscribing to HR change Notifications");
// setCharacteristicNotification(gattCharacteristic,true);
//.}
}
}
}
@@ -288,34 +292,42 @@ public class SdDataSourceBLE extends SdDataSource {
}
public void onDataReceived(BluetoothGattCharacteristic characteristic) {
Log.v(TAG, "onDataReceived uuid" + characteristic.getUuid().toString());
// FIXME - collect data until we have enough to do analysis, then use onDataReceived to process it.
/**
* onDataReceived - called whenever a BLE characteristic notifies us that its data has changed.
* If the data is acceleration data, we add it to a buffer - it is analysed once the buffer is full.
* Heart rate data is written directly to sdData to be used in future analysis.
*/
//Log.v(TAG,"onDataReceived: Characteristic="+characteristic.getUuid().toString());
if (characteristic.getUuid().toString().equals(CHAR_HEART_RATE_MEASUREMENT)) {
int flag = characteristic.getProperties();
//Log.d(TAG,"onDataReceived() - flag = "+flag);
int format = -1;
if ((flag & 0x01) != 0) {
format = BluetoothGattCharacteristic.FORMAT_UINT16;
Log.d(TAG, "Heart rate format UINT16.");
//Log.d(TAG, "onDataReceived(): Heart rate format UINT16.");
} else {
format = BluetoothGattCharacteristic.FORMAT_UINT8;
Log.d(TAG, "Heart rate format UINT8.");
//Log.d(TAG, "onDataReceived(): Heart rate format UINT8.");
}
final int heartRate = characteristic.getIntValue(format, 1);
final int heartRate = characteristic.getIntValue(format, 1); // heart rate is second byte
//byte[] rawDataBytes = characteristic.getValue();
//Log.d(TAG,"onDataReceived - len(rawDataBytes)="+rawDataBytes.length);
//for (int i=0;i<rawDataBytes.length;i++) {
// Log.d(TAG,"onDataReceived - HR["+i+" = "+rawDataBytes[i]);
//}
mSdData.mHR = (double) heartRate;
Log.d(TAG, String.format("Received heart rate: %d", heartRate));
Log.d(TAG, String.format("onDataReceived(): CHAR_HEART_RATE_MEASUREMENT: %d", heartRate));
}
else if (characteristic.getUuid().toString().equals(CHAR_OSD_ACC_DATA)) {
//Log.v(TAG,"Received OSD ACC DATA"+characteristic.getValue());
byte[] rawDataBytes = characteristic.getValue();
Log.v(TAG, "CHAR_OSD_ACC_DATA: numSamples = " + rawDataBytes.length+" nRawData="+nRawData);
Log.v(TAG, "onDataReceived(): CHAR_OSD_ACC_DATA: numSamples = " + rawDataBytes.length+" nRawData="+nRawData);
for (int i = 0; i < rawDataBytes.length;i++) {
if (nRawData < MAX_RAW_DATA) {
rawData[nRawData] = 1000 * rawDataBytes[i] / 64; // Scale to mg
nRawData++;
} else {
Log.i(TAG, "RawData Buffer Full - processing data");
Log.i(TAG, "onDataReceived(): RawData Buffer Full - processing data");
// Re-start collecting raw data.
mSdData.watchAppRunning = true;
for (i = 0; i < rawData.length; i++) {
@@ -334,7 +346,7 @@ public class SdDataSourceBLE extends SdDataSource {
else if (characteristic.getUuid().toString().equals(CHAR_OSD_BATT_DATA)) {
byte batteryPc = characteristic.getValue()[0];
mSdData.batteryPc = batteryPc;
Log.v(TAG,"Received Battery Data" + String.format("%d", batteryPc));
Log.v(TAG,"onDataReceived(): CHAR_OSD_BATT_DATA: " + String.format("%d", batteryPc));
mSdData.haveSettings = true;
}
else {
@@ -356,7 +368,7 @@ public class SdDataSourceBLE extends SdDataSource {
@Override
public void onCharacteristicChanged(BluetoothGatt gatt,
BluetoothGattCharacteristic characteristic) {
Log.v(TAG,"onCharacteristicChanged(): Characteristic "+characteristic.getUuid()+" changed");
//Log.v(TAG,"onCharacteristicChanged(): Characteristic "+characteristic.getUuid()+" changed");
onDataReceived(characteristic);
}