esp8266 arduino core compatibility

Author: d-a-v

src/Ethernet.cpp

@@ -83,7 +83,11 @@ void EthernetClass::begin(uint8_t *mac, IPAddress ip, IPAddress dns, IPAddress g
 	if (W5100.init() == 0) return;
 	SPI.beginTransaction(SPI_ETHERNET_SETTINGS);
 	W5100.setMACAddress(mac);
-#if ARDUINO > 106 || TEENSYDUINO > 121
+#ifdef ESP8266
+	W5100.setIPAddress(&ip[0]);
+	W5100.setGatewayIp(&gateway[0]);
+	W5100.setSubnetMask(&subnet[0]);
+#elif ARDUINO > 106 || TEENSYDUINO > 121
 	W5100.setIPAddress(ip._address.bytes);
 	W5100.setGatewayIp(gateway._address.bytes);
 	W5100.setSubnetMask(subnet._address.bytes);

src/utility/w5100.h

@@ -454,6 +454,8 @@ extern W5100Class W5100;
 #ifndef UTIL_H
 #define UTIL_H
 
+#ifndef htons
+
 #define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
 #define ntohs(x) htons(x)
 
@@ -463,4 +465,6 @@ extern W5100Class W5100;
                    ((x)>>24 & 0x000000FFUL) )
 #define ntohl(x) htonl(x)
 
+#endif // !defined(htons)
+
 #endif