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arduino-libraries / Ethernet

Ethernet Library for Arduino
http://arduino.cc/
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ESP32 + W5500 (Ethernet Shield 2) is not recognised #169

Open barcesat opened 3 years ago

barcesat commented 3 years ago

Hello all, I have tried many combinations but I just can't understand what's the problem. I have an ESP32 Dev module that I have successfully connected to the old W5100 shield in this configuration:

ESP32 SHIELD
GPIO18 SCK (ICSP connector)
GPIO19 MISO (ICSP connector)
GPIO23 MOSI (ICSP connector)
GPIO5 CS (pin10)
EN RESET
5V 5V
GND GND

I have tried to use the same code by selecting the CS pin correctly with 'Ethernet.init(5);' along with the Ethernet shield 2. However, the shield appears to not be recognized by the ESP32 and thus the connection is failing. To test whether the shield is defective I have tried it successfully with Arduino Uno (CS pin=10 of course). I also tested another exact shield with no success.

I thought that perhaps the reset is not connected properly so I've tried connecting it to a free GPIO (32) and run this WizReset function (that I've found somewhere) between Ethernet.init(5); & Ethernet.begin(mac). 

void WizReset(int reset_pin) {`
    Serial.print("Resetting Wiz W5500 Ethernet Board...  ");`
    pinMode(reset_pin, OUTPUT);`
    digitalWrite(reset_pin, HIGH);`
    delay(250);`
    digitalWrite(reset_pin, LOW);`
    delay(50);`
    digitalWrite(reset_pin, HIGH);`
    delay(350);`
    Serial.println("Done.");`
}

It also didn't work... I also tried connecting the reset pin straight to 3.3V but that also failed. I tried all kinds of forks of this library (including the infamous Ethernet2) without success. Does anyone have any idea what am I doing wrong? Thanks!

lathoub commented 3 years ago

I have an ESP32 WROOM32 talking happily to a W5500, using the std Ethernet library with CS pin on 5 of the ESP32 and SCL on PIO22 (not on your drawing)

Only 'special' code I had to add was: Ethernet.init(5);

So no extra resetting of the W5500

philm001 commented 9 months ago

@lathoub Can you share your connections?

I have an ESP32 DevKit C and I also am unable to get the v2 of the Ethernet shield working. I am able to have it work with the v1 which uses the 5100 chip. I am pretty sure that the connections are the same. Will be testing a little more and posting my issue soon.

philm001 commented 9 months ago

So here is where the issue is:

uint8_t W5100Class::isW5500(void)
{
    chip = 55;
    Serial.println("w5100.cpp: detect W5500 chip");
    if (!softReset()) return 0;
    writeMR(0x08);
    int someValue = readMR();
    Serial.println(String(someValue));
    if (someValue != 0x00) return 0;
    writeMR(0x10);
    someValue = readMR();
    Serial.println(String(someValue));
    if (someValue != 0x10) return 0;
    writeMR(0x00);
    if (readMR() != 0x00) return 0;
    int ver = readVERSIONR_W5500();
    //Serial.print("version=");
    //Serial.println(ver);
    if (ver != 4) return 0;
    //Serial.println("chip is W5500");
    return 1;
}

In here, both of the read functions return a 0