From 96b132ac34f7038051f611a655ca4bfa240474d3 Mon Sep 17 00:00:00 2001
From: Alkarex <alexandre@alapetite.fr>
Date: Tue, 20 Mar 2012 20:54:25 +0100
Subject: [PATCH] Patch for
 http://arduino.cc/forum/index.php/topic,85342.msg677517.html#msg677517 See
 W5100 Datasheet V1.2.4 page 64 available from:
 http://www.wiznet.co.kr/Sub_Modules/en/product/product_detail.asp?pid=1011

---
 libraries/Ethernet/utility/w5100.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/Ethernet/utility/w5100.cpp b/libraries/Ethernet/utility/w5100.cpp
index 9c748fd201d..42439aac820 100644
--- a/libraries/Ethernet/utility/w5100.cpp
+++ b/libraries/Ethernet/utility/w5100.cpp
@@ -30,7 +30,9 @@ void W5100Class::init(void)
   SPI.begin();
   initSS();
   
-  writeMR(1<<RST);
+  writeMR(1<<RST);	//Issue a software reset to the W5100 chip.
+  delay(100);	//Wait for the chip to physically reset (it takes 10ms but manufacturer request 100ms).
+  //Continue with the setup of the internal registers:
   writeTMSR(0x55);
   writeRMSR(0x55);