Defer the discovery of services using the system task.

src/SystemTask/SystemTask.cpp

@@ -100,9 +100,25 @@ void SystemTask::Work() {
         case Messages::OnNewNotification:
           displayApp->PushMessage(Pinetime::Applications::DisplayApp::Messages::NewNotification);
           break;
+        case Messages::BleConnected:
+          isBleDiscoveryTimerRunning = true;
+          bleDiscoveryTimer = 5;
+          break;
         default: break;
       }
     }
+
+    if(isBleDiscoveryTimerRunning) {
+      if(bleDiscoveryTimer == 0) {
+        isBleDiscoveryTimerRunning = false;
+        // Services discovery is deffered from 3 seconds to avoid the conflicts between the host communicating with the
+        // tharget and vice-versa. I'm not sure if this is the right way to handle this...
+        nimbleController.StartDiscovery();
+      } else {
+        bleDiscoveryTimer--;
+      }
+    }
+
     uint32_t systick_counter = nrf_rtc_counter_get(portNRF_RTC_REG);
     dateTimeController.UpdateTime(systick_counter);
     batteryController.Update();

src/SystemTask/SystemTask.h

@@ -14,7 +14,7 @@ namespace Pinetime {
   namespace System {
     class SystemTask {
       public:
-        enum class Messages {GoToSleep, GoToRunning, OnNewTime, OnNewNotification
+        enum class Messages {GoToSleep, GoToRunning, OnNewTime, OnNewNotification, BleConnected
         };
 
         SystemTask(Drivers::SpiMaster &spi, Drivers::St7789 &lcd, Drivers::Cst816S &touchPanel,
@@ -58,7 +58,8 @@ namespace Pinetime {
 
         static void Process(void* instance);
         void Work();
-
+        bool isBleDiscoveryTimerRunning = false;
+        uint8_t bleDiscoveryTimer = 0;
 
     };
   }