bb driver impl (not tested)

include/bbnow_driver.hpp

@@ -10,6 +10,7 @@
 #include <vector>
 
 #include "esp_err.h"
+#include "freertos/FreeRTOS.h"
 
 #include "bb_expantions.hpp"
 #include "bbnow_pub.hpp"
@@ -32,7 +33,11 @@ public:
 
     static esp_err_t send_pub(const BBNowPubPacket& packet);
     static bool has_pub();
-    static bool recv_pub(BBNowPubPacket& packet);
+    static bool recv_pub(
+        MacAddress& source,
+        BBNowPubPacket& packet,
+        TickType_t max_delay = 0
+    );
 
     static esp_err_t send_priv(
         const MacAddress& destination,
@@ -41,7 +46,8 @@ public:
     static bool has_priv();
     static bool recv_priv(
         MacAddress& source,
-        BBNowPrivPacket& packet
+        BBNowPrivPacket& packet,
+        TickType_t max_delay = 0
     );
 
     /// Broadcast a discovery packet.
@@ -71,4 +77,4 @@ private:
     static std::vector<PairedExpander> paired_expanders;
 };
 
-#endif /* _BBNOW_DRIVER_HPP */
+#endif /* _BBNOW_DRIVER_HPP */