add callback for harware error event - intended for embedded systems and allows to reset the system

src/bt_control.h

@@ -65,4 +65,5 @@ typedef struct {
 
     void         (*register_for_power_notifications)(void (*cb)(POWER_NOTIFICATION_t event));
 
+    void         (*hw_error)(void); 
 } bt_control_t;

src/hci.c

@@ -492,6 +492,12 @@ static void event_handler(uint8_t *packet, int size){
             }
             break;
             
+        case HCI_EVENT_HARDWARE_ERROR:
+            if(hci_stack.control->hw_error){
+                (*hci_stack.control->hw_error)();
+            }
+            break;
+
         default:
             break;
     }