w5500-evb-pico arduino IDE, direct ethernet connection not working

Question

If i connect the w5500-evb-pico to a switch, and then another device with TCP server on the same switch. I can send messages. However, if I plug in the ethernet cable from the w5500-evb-pico straight into the TCP server device (PC, printer,…) it does not send any messages. It looks as if the cable is not connected. As a matter of test, I made a standalone easy testable sketch. #include #include #include #include byte mac[] = { 0x00, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; IPAddress ip(192, 168, 201, 239); IPAddress subnet(255, 255, 255, 0); IPAddress gateway(192, 168, 201, 150); IPAddress dns(192, 168, 201, 150); IPAddress server(192, 168, 201, 150); // TCP server // Initialize the Ethernet client library (port 80 is default for HTTP): EthernetClient client; // Declare IO const uint LED_PIN = LED_BUILTIN; // the number of the LED pin 25 on wiznet evb // State IO int ledState = LOW; // ledState used to set the LED // Timers unsigned long previousMillis1 = 0; // task 1, will store last time task was run const long interval1 = 1000; // task 1, interval at which to run task (milliseconds) unsigned long previousMillis2 = 0; // task 2, will store last time task was run const long interval2 = 1000; // task 2, interval at which to run task (milliseconds) void setup() { pinMode(LED_PIN, OUTPUT); Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } Serial.println("Test"); // Ethernet and TCP init code Ethernet.init(17); // For w5500-evb-pico if (Ethernet.begin(mac) == 0) { Serial.println("Failed to configure Ethernet using DHCP"); // Check for Ethernet hardware present if (Ethernet.hardwareStatus() == EthernetNoHardware) { Serial.println("Ethernet shield was not found"); } if (Ethernet.linkStatus() == LinkOFF) { Serial.println("Ethernet cable is not connected"); } // try to configure using IP address instead of DHCP: // Ethernet.begin(mac, ip, myDns); Serial.println("Now setting static"); Ethernet.begin(mac, ip, dns, gateway, subnet); } else { Serial.print(" DHCP assigned IP "); Serial.println(Ethernet.localIP()); } } void loop() { // See if we need to run a task on core 1 first_core_task_filter(); } // Here we manage the tasks void first_core_task_filter() { // Task 1, blink LED unsigned long currentMillis1 = millis(); if (currentMillis1 - previousMillis1 >= interval1) { // save the last time we ran the task previousMillis1 = currentMillis1; // Now we are sure we are not over calling the task task1_blink(); } // Task 2, send a TCP message unsigned long currentMillis2 = millis(); if (currentMillis2 - previousMillis2 >= interval2) { previousMillis2 = currentMillis2; task2_send_tcp(); } } // Task's void task1_blink() { // if the LED is off turn it on and vice-versa: if (ledState == LOW) { ledState = HIGH; } else { ledState = LOW; } digitalWrite(LED_PIN, ledState); } void task2_send_tcp() { if (client.connected()) { // Send message Serial.println("Already…

Eugeny · Answer

If link LED does not turn on then you have MDIX issue. Refer to chanper 5.5.6 of the W5500 datasheet.

AshwinDeTaeye · Answer

Well, thanks for the super fast response and answer. That seems very likely the problem, I thought the w5100s had auto MDIX. And so the newer w5500 would have it as well. For completeness: 5.5.6 MDIX W5500 does not support auto-MDIX feature. Thus, user should use straight-through cables to connect to other switches or routers and crossover cables to connect to devices such as servers, workstations or another W5500. However, user can use either type of cable to connect to other devices with auto-MDIX enabled, and the interface automatically corrects for any incorrect cabling. Confirmed the proposed solution. Crossover cable between the w5500 and device solved it.