Garmin Cadence Sensor not sending data (Issue #1704)

cagnulein · Oct 18, 2023 · 8d8b1c1 · 8d8b1c1
1 parent 64d40b5
commit 8d8b1c1
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Showing 2 changed files with 31 additions and 2 deletions.
diff --git a/src/cscbike.cpp b/src/cscbike.cpp
@@ -89,6 +89,15 @@ void cscbike::update() {
                /*initDone*/) {
         update_metrics(true, watts());
 
+        if(lastGoodCadence.secsTo(QDateTime::currentDateTime()) > 5 && !charNotified) {
+            readMethod = true;
+            qDebug() << "no cadence for 5 secs, switching to reading method";
+        }
+
+        if(readMethod && cadenceService) {
+            cadenceService->readCharacteristic(cadenceChar);
+        }
+
         // updating the treadmill console every second
         if (sec1Update++ == (500 / refresh->interval())) {
             sec1Update = 0;
@@ -141,6 +150,8 @@ void cscbike::characteristicChanged(const QLowEnergyCharacteristic &characterist
     double _WheelRevs = 0;
     uint8_t battery = 0;
 
+    charNotified = true;
+
     emit debug(QStringLiteral(" << ") + newValue.toHex(' '));
 
     if (characteristic.uuid() == QBluetoothUuid((quint16)0x2A19)) {
@@ -311,8 +322,16 @@ void cscbike::stateChanged(QLowEnergyService::ServiceState state) {
 
     qDebug() << QStringLiteral("all services discovered!");
 
+    QBluetoothUuid CyclingSpeedAndCadence(QBluetoothUuid::CyclingSpeedAndCadence);
+
     for (QLowEnergyService *s : qAsConst(gattCommunicationChannelService)) {
         if (s->state() == QLowEnergyService::ServiceDiscovered) {
+
+            if(s->serviceUuid() == CyclingSpeedAndCadence) {
+                qDebug() << "CyclingSpeedAndCadence found";
+                cadenceService = s;
+            }
+
             // establish hook into notifications
             connect(s, &QLowEnergyService::characteristicChanged, this, &cscbike::characteristicChanged);
             connect(s, &QLowEnergyService::characteristicWritten, this, &cscbike::characteristicWritten);
@@ -327,7 +346,11 @@ void cscbike::stateChanged(QLowEnergyService::ServiceState state) {
 
             auto characteristics_list = s->characteristics();
             for (const QLowEnergyCharacteristic &c : qAsConst(characteristics_list)) {
-                qDebug() << QStringLiteral("char uuid") << c.uuid() << QStringLiteral("handle") << c.handle();
+                if(c.uuid() == QBluetoothUuid((quint16)0x2A5B)) {
+                    qDebug() << "CyclingSpeedAndCadence char found";
+                    cadenceChar = c;
+                }
+                qDebug() << QStringLiteral("char uuid") << c.uuid() << QStringLiteral("handle") << c.handle() << QStringLiteral("properties") << c.properties();
                 auto descriptors_list = c.descriptors();
                 for (const QLowEnergyDescriptor &d : qAsConst(descriptors_list)) {
                     qDebug() << QStringLiteral("descriptor uuid") << d.uuid() << QStringLiteral("handle") << d.handle();
@@ -424,6 +447,8 @@ void cscbike::characteristicWritten(const QLowEnergyCharacteristic &characterist
 
 void cscbike::characteristicRead(const QLowEnergyCharacteristic &characteristic, const QByteArray &newValue) {
     qDebug() << QStringLiteral("characteristicRead ") << characteristic.uuid() << newValue.toHex(' ');
+
+    characteristicChanged(characteristic, newValue);
 }
 
 void cscbike::serviceScanDone(void) {

diff --git a/src/cscbike.h b/src/cscbike.h
@@ -47,13 +47,15 @@ class cscbike : public bike {
     QTimer *refresh;
 
     QList<QLowEnergyService *> gattCommunicationChannelService;
-    // QLowEnergyCharacteristic gattNotify1Characteristic;
+    QLowEnergyService* cadenceService = nullptr;
+    QLowEnergyCharacteristic cadenceChar;
 
     uint8_t sec1Update = 0;
     QByteArray lastPacket;
     QDateTime lastRefreshCharacteristicChanged = QDateTime::currentDateTime();
     QDateTime lastGoodCadence = QDateTime::currentDateTime();
     uint8_t firstStateChanged = 0;
+    bool charNotified = false;
 
     bool initDone = false;
     bool initRequest = false;
@@ -62,6 +64,8 @@ class cscbike : public bike {
     bool noHeartService = false;
     bool noVirtualDevice = false;
 
+    bool readMethod = false;
+
     uint16_t oldLastCrankEventTime = 0;
     uint16_t oldCrankRevs = 0;