ESP32-POE-ISO No IP Via DHCP Problem

[TeKiLLa1985]

Hi,

we have 3 ESP32-POE-ISO and 1 works abserlutly fine and 2 not

Code Select Expand

#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;
  }
}
with this Code we din't get an IP adress from our DHCP on 2 Boards. 1 Board works fine. The not working boards LED working all on the Seriell Monitor we get ETH Connected and nothing else it hangs up than and don't fire SYSTEM_EVENT_ETH_GOT_IP.
We tested the wifi connect then and it works fine on all boards but we need the POE to power up the boards.

Can someone give us a little help on this problem, the LED's for the connection looking fine.

We also try Static IP but dosn't work too

[LubOlimex]

Each board has the Ethernet interface tested here empirically after manufacturing. So it is likely some sort of software or configuration issue. Try this example:

https://github.com/espressif/arduino-esp32/blob/1.0.3/libraries/WiFi/examples/ETH_LAN8720/ETH_LAN8720.ino

And follow the instructions here:

https://www.olimex.com/Products/IoT/ESP32/_resources/Arudino-ESP32.txt

The last few times someone encountered similar issue it turned out to be some improper network configuration, unrelated to the the ESP32-POE-ISO. For example here: https://www.olimex.com/forum/index.php?topic=7158.0

[TeKiLLa1985]

Hi thanks for the input i try it out but without success the problem is the board works like 2 - 3 month and then without any changes it stops working.
Starts with ETH Connected ETH Disconnected randomly and than nothing.
I try different Switches and differend networks but all the same with POE or no POE. But wenn i switch my sketch to wifi it works greate.