dash ble: fix reconnection and improve logging for BleCallbacks

When reconnecting, we have to use the discovered Characteristics and not
the ones that we used for the previous connection

omnipod-dash/src/main/java/info/nightscout/androidaps/plugins/pump/omnipod/dash/driver/comm/callbacks/BleCommCallbacks.kt

@@ -26,16 +26,16 @@ class BleCommCallbacks(
     private val writeQueue: BlockingQueue<WriteConfirmation> = LinkedBlockingQueue(1)
 
     override fun onConnectionStateChange(gatt: BluetoothGatt, status: Int, newState: Int) {
-        super.onConnectionStateChange(gatt, status, newState)
         aapsLogger.debug(LTag.PUMPBTCOMM, "OnConnectionStateChange with status/state: $status/$newState")
+        super.onConnectionStateChange(gatt, status, newState)
         if (newState == BluetoothProfile.STATE_CONNECTED && status == BluetoothGatt.GATT_SUCCESS) {
             connected.countDown()
         }
     }
 
     override fun onServicesDiscovered(gatt: BluetoothGatt, status: Int) {
+        aapsLogger.debug(LTag.PUMPBTCOMM, "OnServicesDiscovered with status: $status")
         super.onServicesDiscovered(gatt, status)
-        aapsLogger.debug(LTag.PUMPBTCOMM, "OnServicesDiscovered with status$status")
         if (status == BluetoothGatt.GATT_SUCCESS) {
             serviceDiscoveryComplete.countDown()
         }
@@ -83,14 +83,23 @@ class BleCommCallbacks(
     }
 
     override fun onCharacteristicWrite(gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic, status: Int) {
+        aapsLogger.debug(
+            LTag.PUMPBTCOMM,
+            "OnCharacteristicWrite with char/status " +
+                "${characteristic.uuid} /" +
+                "$status"
+        )
         super.onCharacteristicWrite(gatt, characteristic, status)
+
         onWrite(status, characteristic.uuid, characteristic.value)
     }
 
     override fun onCharacteristicChanged(gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic) {
         super.onCharacteristicChanged(gatt, characteristic)
+
         val payload = characteristic.value
         val characteristicType = byValue(characteristic.uuid.toString())
+
         aapsLogger.debug(
             LTag.PUMPBTCOMM,
             "OnCharacteristicChanged with char/value " +
@@ -107,16 +116,44 @@ class BleCommCallbacks(
     override fun onDescriptorWrite(gatt: BluetoothGatt, descriptor: BluetoothGattDescriptor, status: Int) {
         super.onDescriptorWrite(gatt, descriptor, status)
 
+        aapsLogger.debug(
+            LTag.PUMPBTCOMM,
+            "OnDescriptorWrite with descriptor/status " +
+                descriptor.uuid.toString() + "/" +
+                status + "/"
+        )
+
         onWrite(status, descriptor.uuid, descriptor.value)
     }
 
+    override fun onMtuChanged(gatt: BluetoothGatt?, mtu: Int, status: Int) {
+        super.onMtuChanged(gatt, mtu, status)
+        aapsLogger.debug(
+            LTag.PUMPBTCOMM,
+            "onMtuChanged with MTU/status: $mtu/$status "
+        )
+    }
+
+    override fun onReadRemoteRssi(gatt: BluetoothGatt?, rssi: Int, status: Int) {
+        super.onReadRemoteRssi(gatt, rssi, status)
+        aapsLogger.debug(
+            LTag.PUMPBTCOMM,
+            "onReadRemoteRssi with rssi/status: $rssi/$status "
+        )
+    }
+
+    override fun onPhyUpdate(gatt: BluetoothGatt?, txPhy: Int, rxPhy: Int, status: Int) {
+        super.onPhyUpdate(gatt, txPhy, rxPhy, status)
+        aapsLogger.debug(
+            LTag.PUMPBTCOMM,
+            "onPhyUpdate with txPhy/rxPhy/status: $txPhy/$rxPhy/$status "
+        )
+    }
+
     private fun onWrite(status: Int, uuid: UUID?, value: ByteArray?) {
-        if (uuid == null || value == null) {
-            return
-        }
         val writeConfirmation = when {
             uuid == null || value == null ->
-                WriteConfirmationError("onWrite received Null: UUID=$uuid, value=${value.toHex()} status=$status")
+                WriteConfirmationError("onWrite received Null: UUID=$uuid, value=${value?.toHex()} status=$status")
 
             status == BluetoothGatt.GATT_SUCCESS -> {
                 aapsLogger.debug(LTag.PUMPBTCOMM, "OnWrite value " + value.toHex())

omnipod-dash/src/main/java/info/nightscout/androidaps/plugins/pump/omnipod/dash/driver/comm/io/BleIO.kt

@@ -23,7 +23,7 @@ data class BleSendErrorConfirming(val msg: String, val cause: Throwable? = null)
 
 open class BleIO(
     private val aapsLogger: AAPSLogger,
-    private val characteristic: BluetoothGattCharacteristic,
+    var characteristic: BluetoothGattCharacteristic,
     private val incomingPackets: BlockingQueue<ByteArray>,
     private val gatt: BluetoothGatt,
     private val bleCommCallbacks: BleCommCallbacks,

omnipod-dash/src/main/java/info/nightscout/androidaps/plugins/pump/omnipod/dash/driver/comm/session/Connection.kt

@@ -88,7 +88,10 @@ class Connection(val podDevice: BluetoothDevice, private val aapsLogger: AAPSLog
         if (waitForConnection() is NotConnected) {
             throw FailedToConnectException(podDevice.address)
         }
-        discoverer.discoverServices()
+        val discovered = discoverer.discoverServices()
+        dataBleIO.characteristic =  discovered[CharacteristicType.DATA]!!
+        cmdBleIO.characteristic =  discovered[CharacteristicType.CMD]!!
+
         cmdBleIO.hello()
         cmdBleIO.readyToRead()
         dataBleIO.readyToRead()