From e6458922e111b1d2e22713abddf2edb571fc5126 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Frank=20M=C3=B6hle?=
 <91616163+softhack007@users.noreply.github.com>
Date: Tue, 12 May 2026 13:43:47 +0200
Subject: [PATCH] Add sanity checks for ethernet config table and
 WLED_ETH_DEFAULT

Small helper for integrators by compile-time sanity checks:
* WLED_NUM_ETH_TYPES is aligned with the boards table
* WLED_ETH_DEFAULT is aligned with the boards table

-> can be merged into 17.0.0, 16.0.0, and 0.15.x branch
---
 wled00/network.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/wled00/network.cpp b/wled00/network.cpp
index e97bf70abd..2903628831 100644
--- a/wled00/network.cpp
+++ b/wled00/network.cpp
@@ -177,6 +177,12 @@ const ethernet_settings ethernetBoards[] = {
   },
 };
 
+// sanity checks for ethernet config table and WLED_ETH_DEFAULT
+static_assert((sizeof(ethernetBoards)/sizeof(ethernetBoards[0])) == WLED_NUM_ETH_TYPES, "WLED_NUM_ETH_TYPES does not match size of ethernetBoards[] table.");
+#ifdef WLED_ETH_DEFAULT
+  static_assert(((WLED_ETH_DEFAULT) >= WLED_ETH_NONE) && ((WLED_ETH_DEFAULT) < WLED_NUM_ETH_TYPES), "WLED_ETH_DEFAULT is out of range.");
+#endif
+
 bool initEthernet()
 {
   static bool successfullyConfiguredEthernet = false;