Olimex Support Forum

Microcontrollers => ESP32 => Topic started by: MicBar on September 10, 2021, 09:14:52 pm

Title: ESP 32 POE ISO ethernet not work
Post by: MicBar on September 10, 2021, 09:14:52 pm
Hi,

i'm new on Arduino community and I've been working on ESP32 poe iso for a few days

i want established an ethernet connection between the board and my pc to create a tcp/ip connection between my pc and the board. i tried to use this code



#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
#define ETH_PHY_POWER 12

#include <ETH.h>

static bool eth_connected = false;

void WiFiEvent(WiFiEvent_t event)
{
  switch (event) {
    case SYSTEM_EVENT_ETH_START:
      Serial.println("ETH Started");
      //set eth hostname here
      ETH.setHostname("esp32-ethernet");
      break;
    case SYSTEM_EVENT_ETH_CONNECTED:
      Serial.println("ETH Connected");
      break;
    case SYSTEM_EVENT_ETH_GOT_IP:
      Serial.print("ETH MAC: ");
      Serial.print(ETH.macAddress());
      Serial.print(", IPv4: ");
      Serial.print(ETH.localIP());
      if (ETH.fullDuplex()) {
        Serial.print(", FULL_DUPLEX");
      }
      Serial.print(", ");
      Serial.print(ETH.linkSpeed());
      Serial.println("Mbps");
      eth_connected = true;
      break;
    case SYSTEM_EVENT_ETH_DISCONNECTED:
      Serial.println("ETH Disconnected");
      eth_connected = false;
      break;
    case SYSTEM_EVENT_ETH_STOP:
      Serial.println("ETH Stopped");
      eth_connected = false;
      break;
    default:
      break;
  }
}

void testClient(const char * host, uint16_t port)
{
  Serial.print("\nconnecting to ");
  Serial.println(host);

  WiFiClient client;
  if (!client.connect(host, port)) {
    Serial.println("connection failed");
    return;
  }
  client.printf("GET / HTTP/1.1\r\nHost: %s\r\n\r\n", host);
  while (client.connected() && !client.available());
  while (client.available()) {
    Serial.write(client.read());
  }

  Serial.println("closing connection\n");
  client.stop();
}

void setup()
{
  Serial.begin(115200);
  WiFi.onEvent(WiFiEvent);
  ETH.begin();
  ETH.config(IPAddress(192, 168, 1, 101),IPAddress(192, 168, 1, 1),IPAddress(255, 255, 255, 0),IPAddress(192, 168, 1, 1), IPAddress(192, 168, 1, 1));
}


void loop()
{
 
  Serial.print("Looping.. ");
  Serial.print("IPv4: ");
  Serial.println(ETH.localIP());
  if (eth_connected) {
    testClient("google.com", 80);
  }
  delay(10000);
}

but after the flash, from the serial plotter i can see only

Looping.. IPv4: 0.0.0.0

why does ethernet connection not work?

how can i set a static IP and then ping it by command prompt line? i'm using win 10

best regards
Title: Re: ESP 32 POE ISO ethernet not work
Post by: LubOlimex on September 13, 2021, 08:19:53 am
It has static IP address set and maybe it doesn't belong to your network. Try to fiddle with this part:

ETH.config(IPAddress(192, 168, 1, 101),IPAddress(192, 168, 1, 1),IPAddress(255, 255, 255, 0),IPAddress(192, 168, 1, 1), IPAddress(192, 168, 1, 1));

Try with DCHP instead, maybe try this demo:

https://raw.githubusercontent.com/OLIMEX/ESP32-POE/master/SOFTWARE/ARDUINO/ESP32_PoE_Ethernet_SD_Card_Arduino/ESP32_PoE_Ethernet_SD_Card_Arduino.ino

Title: Re: ESP 32 POE ISO ethernet not work
Post by: SejnyM on September 24, 2021, 04:39:51 pm
I don't see something like this:

#define ETH_ADDR 0
#define ETH_TYPE ETH_PHY_LAN8720
#define ETH_POWER 5
#define ETH_MDC 23
#define ETH_MDIO 18
#define ETH_CLK ETH_CLOCK_GPIO17_OUT

ETH.begin(ETH_ADDR, ETH_POWER, ETH_MDC, ETH_MDIO, ETH_TYPE, ETH_CLK);