Added register_dump function to show the contents of a socket register

src/socket/mod.rs

@@ -168,6 +168,17 @@ pub trait Socket {
             }
         }
     }
+
+    fn dump_register<SpiBus: ActiveBus>(&self, bus: &mut SpiBus) -> Result<[u8; 0x30], SpiBus::Error> {
+        let mut register = [0u8; 0x30];
+        block!(bus.transfer_frame(
+            self.register(),
+            0u16,
+            false,
+            &mut register
+        ))?;
+        Ok(register)
+    }
 }
 
 pub type OwnedSockets = (

src/udp/mod.rs

@@ -34,6 +34,10 @@ impl<SpiBus: ActiveBus, NetworkImpl: Network, SocketImpl: Socket>
         Ok(UdpSocket { w5500, socket })
     }
 
+    pub fn dump_register(&mut self) -> Result<[u8; 0x30], SpiBus::Error> {
+        Ok(self.socket.dump_register(&mut self.w5500.bus)?)
+    }
+
     /// Returns a UDP packet if one is available.  Will return `None` if no UDP packets are in the socket's buffer
     pub fn receive(mut self) -> Result<Option<IncomingPacket<Self>>, SpiBus::Error> {
         if !self