feat: defmt + derive for some UDP types

Signed-off-by: Lachezar Lechev <elpiel93@gmail.com>

Cargo.toml

@@ -17,6 +17,7 @@ embedded-nal = "0.6.0"
 bit_field = "0.10.1"
 derive-try-from-primitive = "1"
 nb = "1.0.0"
+defmt = { version = "0.3", optional = true }
 
 [features]
 no-chip-version-assertion = []

src/host/dhcp.rs

@@ -4,7 +4,7 @@ use crate::MacAddress;
 
 pub struct Dhcp {
     // settings: HostConfig,
-// current: HostConfig,
+    // current: HostConfig,
 }
 
 impl Dhcp {

src/socket.rs

@@ -2,6 +2,8 @@ use crate::bus::Bus;
 use crate::register::socketn;
 use embedded_nal::Ipv4Addr;
 
+#[derive(Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct Socket {
     pub index: u8,
     register: u8,

src/udp.rs

@@ -6,6 +6,8 @@ use crate::socket::Socket;
 use core::fmt::Debug;
 use embedded_nal::{nb, IpAddr, Ipv4Addr, SocketAddr, SocketAddrV4, UdpClientStack, UdpFullStack};
 
+#[derive(Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub struct UdpSocket {
     socket: Socket,
 }
@@ -140,10 +142,11 @@ impl UdpSocket {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum UdpSocketError<E: Debug> {
     NoMoreSockets,
     UnsupportedAddress,
-    Other(E),
+    Other(#[cfg_attr(feature = "defmt", defmt(Debug2Format))] E),
     WriteTimeout,
 }