From b851b15a73979917656fdc96a57742f1ce4847aa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20G=C3=B6ttgens?= <tgoettgens@gmail.com>
Date: Sun, 20 Jul 2025 23:13:50 +0200
Subject: [PATCH] fix UDP builds on nRF (#7394)

* fix UDP builds on nRF
* fix rp2040 too
---
 src/mesh/eth/ethClient.cpp      | 2 ++
 src/platform/nrf52/AsyncUDP.cpp | 4 ++++
 src/platform/nrf52/AsyncUDP.h   | 6 ++++++
 3 files changed, 12 insertions(+)

diff --git a/src/mesh/eth/ethClient.cpp b/src/mesh/eth/ethClient.cpp
index fdcc0f4f7..2b4f63512 100644
--- a/src/mesh/eth/ethClient.cpp
+++ b/src/mesh/eth/ethClient.cpp
@@ -68,9 +68,11 @@ static int32_t reconnectETH()
                 initApiServer();
             }
 #endif
+#if HAS_UDP_MULTICAST
             if (udpHandler && config.network.enabled_protocols & meshtastic_Config_NetworkConfig_ProtocolFlags_UDP_BROADCAST) {
                 udpHandler->start();
             }
+#endif
 
             ethStartupComplete = true;
         }
diff --git a/src/platform/nrf52/AsyncUDP.cpp b/src/platform/nrf52/AsyncUDP.cpp
index 956105cdf..836fb1307 100644
--- a/src/platform/nrf52/AsyncUDP.cpp
+++ b/src/platform/nrf52/AsyncUDP.cpp
@@ -1,5 +1,7 @@
 #include "AsyncUDP.h"
 
+#if HAS_ETHERNET
+
 AsyncUDP::AsyncUDP() : OSThread("AsyncUDP"), localPort(0) {}
 
 bool AsyncUDP::listenMulticast(IPAddress multicastIP, uint16_t port, uint8_t ttl)
@@ -67,3 +69,5 @@ int32_t AsyncUDP::runOnce()
     }
     return 5; // check every 5ms
 }
+
+#endif // HAS_ETHERNET
\ No newline at end of file
diff --git a/src/platform/nrf52/AsyncUDP.h b/src/platform/nrf52/AsyncUDP.h
index c7df6d9dd..e2b406ba9 100644
--- a/src/platform/nrf52/AsyncUDP.h
+++ b/src/platform/nrf52/AsyncUDP.h
@@ -1,6 +1,10 @@
 #ifndef ASYNC_UDP_H
 #define ASYNC_UDP_H
 
+#include "configuration.h"
+
+#if HAS_ETHERNET
+
 #include "concurrency/OSThread.h"
 #include <IPAddress.h>
 #include <Print.h>
@@ -54,4 +58,6 @@ inline bool isMulticast(const IPAddress &ip)
     return (ip[0] & 0xF0) == 0xE0;
 }
 
+#endif // HAS_ETHERNET
+
 #endif // ASYNC_UDP_H