From 6eeaacdf90d646c9c38568e3530edf7a2ec8be7d Mon Sep 17 00:00:00 2001
From: Fred <fndecker@gmail.com>
Date: Thu, 10 Jun 2021 19:02:20 -0400
Subject: [PATCH] Add loop to retry Ethernet cable connection (#173)

Implement PaulS's change to delay in a loop to give more time for sensing an Ethernet cable connection
---
 EthernetInterface.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/EthernetInterface.cpp b/EthernetInterface.cpp
index c0b43d3..22b61f3 100644
--- a/EthernetInterface.cpp
+++ b/EthernetInterface.cpp
@@ -68,6 +68,16 @@ EthernetInterface::EthernetInterface()
       DIAG(F("Ethernet shield not found"));
       return;
     }
+  
+    unsigned long startmilli = millis();
+    while ((millis() - startmilli) < 5500) // Loop to give time to check for cable connection
+    {
+        if (Ethernet.linkStatus() == LinkON)
+            break;
+        DIAG(F("Ethernet waiting for link (1sec) "));
+        delay(1000);
+    }
+
     if (Ethernet.linkStatus() == LinkOFF) {
       DIAG(F("Ethernet cable not connected"));
       return;