Esp8266 / esp32 with Arduinos ethernet.h library problem

colarocker · May 6, 2019, 12:52am

Hello! I’m trying to begin to use PlatformIO, but for my needs it’s essential to get an ethernet library working. with the Arduino IDE i was able to use the ethernet library of Arduinos Compilation (stoffregens ethernet lib) but when i try to use a simple example-project like LinkStatus (code below) it won’t compile and i get a lot of errors… what could i do? thanks in advance for your time <3
the code:

#include <Arduino.h>
/*
  Link Status
  This sketch prints the ethernet link status. When the
  ethernet cable is connected the link status should go to "ON".
  NOTE: Only WizNet W5200 and W5500 are capable of reporting
  the link status. W5100 will report "Unknown".
  Hardware:
   - Ethernet shield or equivalent board/shield with WizNet 5200/5500
  Written by Cristian Maglie
  This example is public domain.
*/

#include <SPI.h>
#include <Ethernet.h>

void setup() {
  // You can use Ethernet.init(pin) to configure the CS pin
  Ethernet.init(15);  // ESP8266 with Adafruit Featherwing Ethernet

  Serial.begin(9600);
}

void loop() {
  auto link = Ethernet.linkStatus();
  Serial.print("Link status: ");
  switch (link) {
    case Unknown:
      Serial.println("Unknown");
      break;
    case LinkON:
      Serial.println("ON");
      break;
    case LinkOFF:
      Serial.println("OFF");
      break;
  }
  delay(1000);
}

part of the output (Some got cut because output was too big):

colarocker · May 6, 2019, 2:00am

In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dhcp.cpp:7:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:464:0: warning: "ntohl" redefined [enabled by default]
#define ntohl(x) htonl(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dhcp.cpp:5:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:122:0: note: this is the location of the previous definition
#define ntohl(x) lwip_ntohl(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:8:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:457:0: warning: "htons" redefined [enabled by default]
#define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:6:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:119:0: note: this is the location of the previous definition
#define htons(x) lwip_htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:24:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:457:0: warning: "htons" redefined [enabled by default]
#define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:8:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:458:0: warning: "ntohs" redefined [enabled by default]
#define ntohs(x) htons(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:119:0: note: this is the location of the previous definition
#define htons(x) lwip_htons(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:6:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:120:0: note: this is the location of the previous definition
#define ntohs(x) lwip_ntohs(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:24:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:458:0: warning: "ntohs" redefined [enabled by default]
#define ntohs(x) htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:457:0: warning: "htons" redefined [enabled by default]
#define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetServer.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:457:0: warning: "htons" redefined [enabled by default]
#define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\socket.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:457:0: warning: "htons" redefined [enabled by default]
#define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:8:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:460:0: warning: "htonl" redefined [enabled by default]
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:120:0: note: this is the location of the previous definition
#define ntohs(x) lwip_ntohs(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:119:0: note: this is the location of the previous definition
#define htons(x) lwip_htons(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\socket.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:119:0: note: this is the location of the previous definition
#define htons(x) lwip_htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetUdp.cpp:32:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:457:0: warning: "htons" redefined [enabled by default]
#define htons(x) ( (((x)<<8)&0xFF00) | (((x)>>8)&0xFF) )
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:6:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:121:0: note: this is the location of the previous definition
#define htonl(x) lwip_htonl(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetServer.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:119:0: note: this is the location of the previous definition
#define htons(x) lwip_htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:24:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:460:0: warning: "htonl" redefined [enabled by default]
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetUdp.cpp:30:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:119:0: note: this is the location of the previous definition
#define htons(x) lwip_htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:458:0: warning: "ntohs" redefined [enabled by default]
#define ntohs(x) htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\socket.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:458:0: warning: "ntohs" redefined [enabled by default]
#define ntohs(x) htons(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:121:0: note: this is the location of the previous definition
#define htonl(x) lwip_htonl(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetServer.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:458:0: warning: "ntohs" redefined [enabled by default]
#define ntohs(x) htons(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:8:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:464:0: warning: "ntohl" redefined [enabled by default]
#define ntohl(x) htonl(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:120:0: note: this is the location of the previous definition
#define ntohs(x) lwip_ntohs(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetServer.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:120:0: note: this is the location of the previous definition
#define ntohs(x) lwip_ntohs(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetUdp.cpp:32:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:458:0: warning: "ntohs" redefined [enabled by default]
#define ntohs(x) htons(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Dns.cpp:6:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:122:0: note: this is the location of the previous definition
#define ntohl(x) lwip_ntohl(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:24:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:464:0: warning: "ntohl" redefined [enabled by default]
#define ntohl(x) htonl(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\socket.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:120:0: note: this is the location of the previous definition
#define ntohs(x) lwip_ntohs(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetUdp.cpp:30:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:120:0: note: this is the location of the previous definition
#define ntohs(x) lwip_ntohs(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetServer.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:460:0: warning: "htonl" redefined [enabled by default]
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:460:0: warning: "htonl" redefined [enabled by default]
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetClient.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:122:0: note: this is the location of the previous definition
#define ntohl(x) lwip_ntohl(x)
^
In file included from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/ip_addr.h:41:0,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\include/ipv4_addr.h:38,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/arch/cc.h:93,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/arch.h:48,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/debug.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwipopts.h:3575,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/opt.h:51,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/init.h:40,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/IPAddress.h:27,
from C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\cores\esp8266/Client.h:24,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\Ethernet.h:52,
from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetServer.cpp:22:
C:\Users\Sir_A\.platformio\packages\framework-arduinoespressif8266\tools\sdk\lwip2\include/lwip/def.h:121:0: note: this is the location of the previous definition
#define htonl(x) lwip_htonl(x)
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\EthernetUdp.cpp:32:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:460:0: warning: "htonl" redefined [enabled by default]
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
^
In file included from C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\socket.cpp:23:0:
C:\Users\Sir_A\.platformio\lib\Ethernet_ID872\src\utility/w5100.h:460:0: warning: "htonl" redefined [enabled by default]
#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
^

pfeerick · May 6, 2019, 2:23am

Try setting platform = espressif8266@1.8.0 in your platformio.ini, which will switch you back to the v2.4.2 Arduino ESP8266 core. There appear to be known issues with v2.5.0 and the Ethernet library, which should be fixed in v2.5.1

github.com/esp8266/Arduino

2.5.0: Issues with Arduino API

opened 09:47PM - 09 Feb 19 UTC

closed 08:05PM - 26 Apr 19 UTC

d-a-v

component: libraries component: network type: troubleshooting component: 3rd party lib

> UDP `virtual IPAddress remoteIP() =0;` `virtual IPAddress remoteIP() const =0;…` you can't change a virtual function in an established Arduino core class https://github.com/esp8266/Arduino/commit/5c4db3acf4353870b6a5663ba06d712d67e6c179#commitcomment-32254962 > other networking libraries Client implementations do not implement `flush` and `stop` with parameter. "The type 'UIPClient' must implement the inherited pure virtual method 'Client::stop' " https://github.com/esp8266/Arduino/commit/83a8076db87b77de6a7b500c18b85057e38ed117#commitcomment-32254941 @jandrassy Can you please give more details ? Also [If your sketch does not compile and returns error](https://learn.adafruit.com/adafruit-feather-huzzah-esp8266/using-arduino-ide) needs to be addressed.

github.com/esp8266/Arduino

upgrade Ethernet library to pjrc Version 2.0.0

opened 11:05AM - 16 Jan 19 UTC

closed 06:11PM - 09 Nov 20 UTC

wolfgangr

There is a new Ethernet library been developed by Paul Stoffregen https://www.…pjrc.com/arduino-ethernet-library-2-0-0/ which has already found its way into arduino mainstream: https://github.com/arduino-libraries/Ethernet/blob/master/library.properties Here at esp8266/Arduino, current master is still at "version=1.0.4" https://github.com/esp8266/Arduino/blob/master/libraries/Ethernet/library.properties In his linked article, Paul reports succesful testing on a Adafruit Huzzah ESP8266 Feather , so I hoped, this lib would be copmatible or even included in esp8266/Arduino. among other, I'd desperately use `Ethernet.hardwareStatus() ` and `Ethernet.linkStatus()` to debug my network test environment. ### Basic Infos - [X] This issue complies with the [issue POLICY doc](https://github.com/esp8266/Arduino/blob/master/POLICY.md). - [X] I have read the documentation at [readthedocs](https://arduino-esp8266.readthedocs.io/en/latest) and the issue is not addressed there. Search for "Ethernet" does not macht any document - [X] I have tested that the issue is present in current master branch (aka latest git). - [X] I have searched the issue tracker for a similar issue. - [X] If there is a stack dump, I have decoded it. no stack dump - [X] I have filled out all fields below. #### Platform - Hardware: [ESP-12] + WIZNET W5100 - Core Version: [2.5.0-beta2] and [2.4.2] - Development Env: [Arduino IDE] ARDUINO 1.8.8 2018.12.07 - Operating System: [debian 9.3] ### Settings in IDE - Module: [Generic ESP8266] and |Nodemcu 0.9] - Flash Mode: N/A - Flash Size: [4MB] no SPIFFS - lwip Variant: [v2 Lower Memory] - Reset Method: N/A - Flash Frequency: N/A - CPU Frequency: [80Mhz] - Upload Using: [SERIAL] - Upload Speed: [115200] ### Problem Description I try to include wired networking into the tasmota Project. https://github.com/arendst/Sonoff-Tasmota/issues/4936 My test setup consists of a NODEMCU 0.9 with a generic china sourced W5100. (Yes, I got those to work with AVR MCU's, and tried different modules....) When I try the DHCPAdressPrinter example, I don't get any print at all. I see the initial stage of DHCP handshake in my router log, but not the DHCPREQUEST / DHCPACK of a succesful lease assignment: ``` Jan 16 01:21:34 spider daemon.info dnsmasq-dhcp[1862]: DHCPDISCOVER(br-dmz) 00:aa:bb:cc:de:02 Jan 16 01:21:34 spider daemon.info dnsmasq-dhcp[1862]: DHCPOFFER(br-dmz) 192.168.1.88 00:aa:bb:cc:de:02 ``` I concluded that either my net module does only transmit sends, not recieve the answer, or problems buried somewhere deep in the stack. **More debug would be great at that point.** Googling the issue, I found PJRC's library 2.0.0. Scrutinizing my Arduino (good exercise :-), anyway....) revelaed that this was already included in mainstream arduino, but not yet in the ESP8266 platform. So I tried to add it manually. When I override the Ethernet lib shipped with esp8266/Arduino with the new 2-0-0 Ethernet lib, I get loads of `error: invalid abstract return type for member function 'EthernetClient EthernetServer::available()'`. So obvioulsy there is more to change in the ESP8266 interface then just dropping in this library. Would be great to get it to work, however. Among else, it promises **extended hardware and link state debugging.** Im trying at the DNSAddressPrinter example. I see DHCPDISCOVER and DHCPOFFER in my router log, but communication seems to break down then. I could not manage to test 2-0-0 Ethernet libs using the Arduino IDE. So I did a forceful override: ``` ~/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/libraries$ rm -rf Ethernet/ :~/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/libraries$ ln -s ~/Arduino/libraries/Ethernet-2.0.0/ ./Ethernet ``` ### Debug Messages Full error message: ``` Arduino: 1.8.8 (Linux), Board: "NodeMCU 0.9 (ESP-12 Module), 80 MHz, Flash, Enabled, 4M (no SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200" In file included from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/EthernetServer.h:3:0, from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:1: /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:258:17: error: invalid abstract return type for member function 'EthernetClient EthernetServer::available()' EthernetClient available(); ^ /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:214:7: note: because the following virtual functions are pure within 'EthernetClient': class EthernetClient : public Client { ^ In file included from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:52:0, from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/EthernetServer.h:3, from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:1: Multiple libraries were found for "EthernetServer.h" Used: /home/wrosner/Arduino/libraries/Ethernet-2.0.0 Not used: /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/libraries/Ethernet /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/cores/esp8266/Client.h:29:21: note: virtual int Client::connect(const IPAddress&, uint16_t) Not used: /home/wrosner/test/arduino/arduino-1.8.8/arduino-1.8.8/libraries/Ethernet Not used: /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/libraries/Ethernet Not used: /home/wrosner/test/arduino/arduino-1.8.8/arduino-1.8.8/libraries/Ethernet Not used: /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/libraries/Ethernet Not used: /home/wrosner/test/arduino/arduino-1.8.8/arduino-1.8.8/libraries/Ethernet Not used: /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/libraries/Ethernet Not used: /home/wrosner/test/arduino/arduino-1.8.8/arduino-1.8.8/libraries/Ethernet virtual int connect(CONST IPAddress& ip, uint16_t port) =0; ^ /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/cores/esp8266/Client.h:37:22: note: virtual bool Client::flush(unsigned int) virtual bool flush(unsigned int maxWaitMs = 0) = 0; ^ /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/cores/esp8266/Client.h:38:22: note: virtual bool Client::stop(unsigned int) virtual bool stop(unsigned int maxWaitMs = 0) = 0; ^ In file included from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/EthernetServer.h:3:0, from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:1: /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:259:17: error: invalid abstract return type for member function 'EthernetClient EthernetServer::accept()' EthernetClient accept(); ^ /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:214:7: note: since type 'EthernetClient' has pure virtual functions class EthernetClient : public Client { ^ /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:298:14: error: cannot declare field 'DhcpClass::_dhcpUdpSocket' to be of abstract type 'EthernetUDP' EthernetUDP _dhcpUdpSocket; ^ In file included from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/EthernetServer.h:3:0, from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:1: /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:152:7: note: because the following virtual functions are pure within 'EthernetUDP': class EthernetUDP : public UDP { ^ In file included from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:54:0, from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/EthernetServer.h:3, from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:1: /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/cores/esp8266/Udp.h:81:27: note: virtual IPAddress UDP::remoteIP() const virtual IPAddress remoteIP() const =0; ^ /home/wrosner/.arduino15/packages/esp8266/hardware/esp8266/2.5.0-beta2/cores/esp8266/Udp.h:83:26: note: virtual uint16_t UDP::remotePort() const virtual uint16_t remotePort() const =0; ^ In file included from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:5:0: /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Dns.h:37:14: error: cannot declare field 'DNSClient::iUdp' to be of abstract type 'EthernetUDP' EthernetUDP iUdp; ^ In file included from /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/EthernetServer.h:3:0, from /home/wrosner/test/ESP8266/Ethernet-2.0.0/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino:1: /home/wrosner/Arduino/libraries/Ethernet-2.0.0/src/Ethernet.h:152:7: note: since type 'EthernetUDP' has pure virtual functions class EthernetUDP : public UDP { ^ exit status 1 Error compiling for board NodeMCU 0.9 (ESP-12 Module). This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences. ``` ### [MCVE](https://stackoverflow.com/help/mcve) Sketch Nothing of my own. I used the stock DhcpAddressPrinter Example, as shipped with current Arduino IDE, e.g. here https://github.com/arduino-libraries/Ethernet/blob/master/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino I just changed the serial speed to 115200 It builds without issues for AVR platforms. ```cpp #include <EthernetServer.h> #include <EthernetUdp.h> #include <Dhcp.h> #include <Ethernet.h> #include <Dns.h> #include <EthernetClient.h> #include <EthernetServer.h> #include <EthernetUdp.h> #include <Dhcp.h> #include <Ethernet.h> #include <Dns.h> #include <EthernetClient.h> /* DHCP-based IP printer This sketch uses the DHCP extensions to the Ethernet library to get an IP address via DHCP and print the address obtained. using an Arduino Wiznet Ethernet shield. Circuit: Ethernet shield attached to pins 10, 11, 12, 13 created 12 April 2011 modified 9 Apr 2012 by Tom Igoe modified 02 Sept 2015 by Arturo Guadalupi */ #include <SPI.h> #include <Ethernet.h> // Enter a MAC address for your controller below. // Newer Ethernet shields have a MAC address printed on a sticker on the shield byte mac[] = { 0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02 }; void setup() { // You can use Ethernet.init(pin) to configure the CS pin //Ethernet.init(10); // Most Arduino shields //Ethernet.init(5); // MKR ETH shield //Ethernet.init(0); // Teensy 2.0 //Ethernet.init(20); // Teensy++ 2.0 //Ethernet.init(15); // ESP8266 with Adafruit Featherwing Ethernet //Ethernet.init(33); // ESP32 with Adafruit Featherwing Ethernet // Open serial communications and wait for port to open: Serial.begin(115200); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } // start the Ethernet connection: Serial.println("Initialize Ethernet with DHCP:"); if (Ethernet.begin(mac) == 0) { Serial.println("Failed to configure Ethernet using DHCP"); if (Ethernet.hardwareStatus() == EthernetNoHardware) { Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :("); } else if (Ethernet.linkStatus() == LinkOFF) { Serial.println("Ethernet cable is not connected."); } // no point in carrying on, so do nothing forevermore: while (true) { delay(1); } } // print your local IP address: Serial.print("My IP address: "); Serial.println(Ethernet.localIP()); } void loop() { switch (Ethernet.maintain()) { case 1: //renewed fail Serial.println("Error: renewed fail"); break; case 2: //renewed success Serial.println("Renewed success"); //print your local IP address: Serial.print("My IP address: "); Serial.println(Ethernet.localIP()); break; case 3: //rebind fail Serial.println("Error: rebind fail"); break; case 4: //rebind success Serial.println("Rebind success"); //print your local IP address: Serial.print("My IP address: "); Serial.println(Ethernet.localIP()); break; default: //nothing happened break; } } ```

colarocker · May 6, 2019, 2:39am

awesome, thanks for the fast reply, works like a charm! do you maybe know how to fix it for the esp32 platform?

pfeerick · May 6, 2019, 10:04am

Fantastic.

For the esp32, I’d just start rolling back the versions from the current 1.8.0 … i.e. for the second last version…

platform = espressif32@1.7.0

You can see the list of releases here…

colarocker · May 6, 2019, 1:26pm

works too, really great, thanks for the insight! best wishes =)

miq19 · May 24, 2020, 3:45pm

I am running into similar issues with ESP32 today - is it still required to roll back to 1.7.0? Seems to be a long time since without motion to me…

The use of EthernetServer and EthernetClient is still impossible, for a line of

EthernetServer server(23);

I get thrown

error: cannot declare variable 'server' to be of abstract type 'EthernetServer'
 EthernetServer server(23);
                ^
In file included from src\main.cpp:10:0:
C:/Users/Micha/.platformio/lib/Ethernet_ID872/src/Ethernet.h:253:7: note:   because the following virtual functions are pure within 'EthernetServer':     
 class EthernetServer : public Server {
       ^
In file included from C:/Users/Micha/.platformio/packages/framework-arduinoespressif32/cores/esp32/Arduino.h:152:0,
                 from src\main.cpp:1:
C:/Users/Micha/.platformio/packages/framework-arduinoespressif32/cores/esp32/Server.h:28:18: note:      virtual void Server::begin(uint16_t)
     virtual void begin(uint16_t port=0) =0;

maxgerhardt · May 24, 2020, 5:43pm

As noted in this library’s repository: It is a known bug. Arduino-core and Arduino-ESP32 people couldn’t aggree upon whether it was correct of Arduino-ESP32 to change the original Arduino API and don’t think they need to adapt their library, but Arduino-ESP32 should fix their code. According to Virtual functions in client.h are out of line with standard Arduino API · Issue #2755 · espressif/arduino-esp32 · GitHub, this has finally happened partially for one function, but the bug about connect() remains.

But again you can just take the code from the pull-request and see if it works for you.

remove the Ethernet library from your global library repository (C:/Users/Micha/.platformio/lib/Ethernet_ID872)
In your platformio.ini declare:

lib_deps = 
   Ethernet=https://github.com/cnSchwarzer/Ethernet.git

and retry compilation.

miq19 · May 24, 2020, 7:48pm

Thank you very much! I have missed the reference you cited, else I would not have complained

I will do as you advised.

miq19 · May 25, 2020, 2:43pm

Thanks again - the compile now finishes - albeit with some warnings about int connect() having no return statement. A look into the code reveals that is true - would not that harm any function relying on the return codes? connect() is used repeatedly in the lib assuming it returns a value.

maxgerhardt · May 25, 2020, 4:09pm

Wow even supposedly “fixed” code is broken. Jesus Christ.

No that’s actually a problem because it can provoke undefined behavior and the firmware can crash… Connect should return a proper return code according to the Arduino specifications.

I’ve fixed the library as good as a I can – connect() can only return 0 or 1 anyways because that’s the only implemented return values of the underlying connect function. But it should be good enough as an error indication.

To use the new fixed library, delete the old folder in .pio\libdeps\<environment name>\Ethernet and adapt the platformio.ini with:

lib_deps = 
   Ethernet=https://github.com/maxgerhardt/Ethernet.git

Then the WebClient demo compiles without warnings for me.

miq19 · May 25, 2020, 4:15pm

I did a change myself and offered it in a comment on the commit in cnSchwarzer’s repository. I even tried to post a commit myself, but I have never worked with Github before, so I am not sure if that succeeded.

My change is a bit less elaborate, but since setConnectionTimeout does nothing else but giving the _timeout variable a value, I think it will work as well:

#ifdef ESP32
	int connect(IPAddress ip, uint16_t port, int timeout)
	{
		setConnectionTimeout(timeout);
		return connect(ip, port);
	}
	int connect(const char* host, uint16_t port, int timeout)
	{
		setConnectionTimeout(timeout);
		return connect(host, port);
	}
#endif

maxgerhardt · May 25, 2020, 4:30pm

There I wasn’t sure whether the order of the function calls is important – can connect change the values set by setConnectionTimeout, e.g. to some default values? Didn’t want to play with that, that’s why I left that order in its original form (see Fix return codes for connect() · maxgerhardt/Ethernet@c9399a9 · GitHub).

Does it work with actual hardware now?

miq19 · May 25, 2020, 4:37pm

Yes, it does, if a little brittle only - it is still on a breadboard with patch wires and the power supply is slightly on the meager side…

I turned to your fork, for your objection is valid.

By the way: Einen schönen Gruß nach Bochum(?)!

maxgerhardt · May 25, 2020, 5:11pm

Right indeed

Off-topic addendum: The ESP32 has a built-in Ethernet peripheral (MAC) which you can connect to an Ethernet PHY chip via the RMII (Reduced media-independent interface) protocol, which is in turn connected to the physical ethernet jack / magjack. ESP-IDF has an example. For HW see e.g. the OLIMEX ESP32 gateway boards. The schematics are also available. The PHY costs about 0,80€ and a RJ45 jack with built-in or external magnetics can’t also cost that much – should all be much cheapter than a W5500 chip costing 2€ plus a RJ45 jack.

miq19 · May 25, 2020, 5:20pm

I read about that, but it looked too adventurous to me. Given the price of the DIN rail box (~25€, plus another 10€ for a DIN rail power supply) I will be using for the device the cost reduction is neglectable.

Off topic: Ich wohne bei Frankfurt/M., komme aber aus GE .

miq19 · June 29, 2020, 3:07pm

A very late observation: initializing the W5500 without DHCP actually works fine, but a call to Ethernet.linkStatus() will always return a LINK_OFF state regardless.