From 4ff4bc95c9f04a9cf1f07f91a5a3aaccaeb5042d Mon Sep 17 00:00:00 2001
From: Jonah Dahlquist <jonahd@google.com>
Date: Sun, 19 Jan 2020 23:49:46 -0800
Subject: [PATCH] Added register_dump function to show the contents of a socket
 register

---
 src/socket/mod.rs | 11 +++++++++++
 src/udp/mod.rs    |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/src/socket/mod.rs b/src/socket/mod.rs
index 6abd085..1cd9ce2 100644
--- a/src/socket/mod.rs
+++ b/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 = (
diff --git a/src/udp/mod.rs b/src/udp/mod.rs
index 351ecd5..a192f4e 100644
--- a/src/udp/mod.rs
+++ b/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