IoShield A+ Arduino DUE as Server TCP

Question

Hello I have and Wiznet IoShieldA that I connect to an Arduino DUE in order to become a TCP SERVER. I downloaded Arduino IDE 1.6.12. I copy in the Ethernet library the Wiznet Ethernet library. in utility/w5100.h I uncommented #define WIZ550io_WITH_MACADDRESS Then I wen to the the TCP Example arduino.cc/en/Reference/EthernetServer I copy this code in a new sketch, and I gives me an error. Problem is in if (client == true) Reading some forums, it seems the example is wrong and should modify it to if (client) I changed the MAC (the one written in the Wiznet), IP and Subnet to be the one that fits my Server. I donwloaded the code in my Arduino DUE+ioShield- A without trouble. To test if it worked I connected ioshield by means of a crossed utp cable to the PC, I put the PC in the same net as Arduino, with the same mask. I try to test the doe using AX1 application. I go to TCP> Connect … it takes some seconds, and finally Connection Failed message appears. I don’t know why. Any help will be appreciated. I tested the Arduino as Client using AX1 with the same configuration and it worked. Here is my code: [code]#include <Ethernet.h> // network configuration. gateway and subnet are optional. // the media access control (ethernet hardware) address for the shield: byte mac = { 0x00, 0x08, 0xDC, 0x4D, 0xD1, 0x22 }; //the IP address for the shield: byte ip = { 10, 1, 3, 1 }; // the router’s gateway address: //byte gateway = { 10, 0, 0, 1 }; // the subnet: byte subnet = { 255, 255, 255, 0 }; // telnet defaults to port 23 EthernetServer server = EthernetServer(3000); void setup() { // initialize the ethernet device Ethernet.begin(mac, ip); // start listening for clients server.begin(); } void loop() { // if an incoming client connects, there will be bytes available to read: EthernetClient client = server.available(); if (client) { // read bytes from the incoming client and write them back // to any clients connected to the server: server.write(client.read()); } }[/code]

Eugeny · Answer

[quote=“svia”]I put the PC in the same net as Arduino, with the same mask. byte mac[] = { 0x00, 0x08, 0xDC, 0x4D, 0xD1, 0x22 }; byte ip[] = { 10, 1, 3, 1 }; //byte gateway[] = { 10, 0, 0, 1 }; byte subnet[] = { 255, 255, 255, 0 }; [/quote] You should set gateway IP address properly too. Note that gateway 10.0.0.1 is out of scope for network 10.2.3.x.