Communication issues with W5500

Question

Hello, I’m having difficulty communicating with the chip via web server with Atmega 328pb. Server code below. #define __AVR_ATmega328PB__ #include "Ethernet.h" #include "C:/Users/user/source/Workspaces/directory/Directory/Libraries/SPI_Atmega_328PB/SPI/src/SPI.h" //#include byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //the IP address for the shield: IPAddress ip(192, 168, 50, 252 ); // the router's gateway address: //IPAddress gateway(192, 168, 50, 1); // the subnet: //IPAddress subnet( 255, 255, 0, 0 ); EthernetServer server(80); String readString; void setup() { Serial.begin(9600); while(!Serial) {}; // initialize the ethernet device Ethernet.init(PIN_SPI_SS); Ethernet.begin(mac, ip); //Ethernet.setLocalIP(ip); Serial.println(Ethernet.localIP()); // Check for Ethernet hardware present if (Ethernet.hardwareStatus() == EthernetNoHardware) { Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :("); while (true) { delay(1); // do nothing, no point running without Ethernet hardware } } if (Ethernet.linkStatus() == LinkOFF) { Serial.println("Ethernet cable is not connected."); } // start listening for clients server.begin(); Serial.println("Server is at: "); Serial.print(Ethernet.localIP()); } void loop() { // Create a client connection EthernetClient client = server.available(); if (client) { Serial.println("new client"); // an HTTP request ends with a blank line bool currentLineIsBlank = true; while (client.connected()) { if (client.available()) { char c = client.read(); //read char by char HTTP request if (readString.length() < 100) { //store characters to string readString += c; Serial.print(c); } //if HTTP request has ended if (c == ' ' && currentLineIsBlank) { /* Serial.println(readString); //print to serial monitor for debuging client.println("HTTP/1.1 200 OK"); //send new page client.println("Content-Type: text/html"); client.println("Connection: close"); // the connection will be closed after completion of the response client.println("Refresh: 5"); // refresh the page automatically every 5 sec client.println(); client.println(""); client.println(""); client.println(""); client.println(""); client.println(""); client.println("hello world"); client.println(""); client.println(""); client.println("

"); client.println("

"); client.println("
"); client.println("

"); client.println("
"); client.println("Turn On LED"); client.println("Turn Off LED
"); client.println("
"); client.println("
"); //client.println("Rotate Left"); //client.println("Rotate Right
"); client.println("

"); client.println("
"); client.println("")…

Eugeny · Answer

Not looking at the code much: 0xdeadbeeffeed is locally administered MAC address! Why people keep selecting it? Next, explain how the difficulty exhibits itself. More detailed explanation will lead to quicker and effective solution.

Eugeny · Answer

What is the difficulty you are experiencing? Can you explain it please? And change MAC address to something different not having two lower bits in first octet set.

NLawc · Answer

I’m having issues receiving data from the network. The W5500 can communicate via SPI with the main uC.

Eugeny · Answer

Much better! Now explain what issues are you having with the receiving: what you are sending to the W5500, what it displays in debug output, and what it, from your opinion, does wrong.