Free unuse bt memory if not needed

Author: amandel

OpenBikeSensorFirmware/OpenBikeSensorFirmware.ino

@@ -178,6 +178,8 @@ void setup() {
   if (buttonState == HIGH || (requiresDisplayConnection && displayError != 0))
   {
     displayTest->showTextOnGrid(2, 2, "Start Server");
+    esp_bt_mem_release(ESP_BT_MODE_BTDM); // no bluetooth at all here.
+
     delay(1000); // Added for user experience
 
     startServer();

OpenBikeSensorFirmware/bluetooth/BluetoothManager.cpp

@@ -9,6 +9,7 @@ unsigned long buttonPressTimestamp = -1;
 
 void BluetoothManager::init() {
 
+  esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT);
   char deviceName[32];
   snprintf(deviceName, sizeof(deviceName), "OpenBikeSensor %04X", (uint16_t)(ESP.getEfuseMac() >> 32));
   BLEDevice::init(deviceName);
@@ -49,7 +50,6 @@ void BluetoothManager::activateBluetooth() {
       pServer->getAdvertising()->addServiceUUID(service->getService()->getUUID());
     }
   }
-//  esp_bt_controller_mem_release(ESP_BT_MODE_BTDM);
 
   pServer->getAdvertising()->start();
 //  digitalWrite(13, HIGH);