HELP LAN8710A ESP32-EVB

[yurka]

good fellows!!! 

iam trying to run ETHERNET with the following example:

but I get error:
E(175)lan87xxx:lan87xx_init(499): wrong chip ID

Anybody has any idea how to solve this problem or another solution. Thanks in advance

Code Select Expand

/*
  OLIMEX ESP32-EVB Ethernet example
*/

#include <ETH.h>
#include <SPI.h>

#define ETH_CLK_MODE    ETH_CLOCK_GPIO0_IN
#define ETH_POWER_PIN   -1
#define ETH_TYPE        ETH_PHY_LAN8720
#define ETH_ADDR        0
#define ETH_MDC_PIN     23
#define ETH_MDIO_PIN    18
#define NRST            5

static bool eth_connected = false;

void setup() {
  Serial.begin(115200);
  Serial.println();
  Serial.println(F("Start OLIMEX ESP32-EVB Ethernet example..."));

  WiFi.onEvent(WiFiEvent);

  ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE);
}

void WiFiEvent(WiFiEvent_t event) {
  switch (event) {
    case SYSTEM_EVENT_ETH_START:
      Serial.println("ETH Started");
      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;
  }
} // WiFiEvent( )

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 loop() {
  if (eth_connected) {
    testClient("google.com", 80);
  }
  delay(10000);
}


[Stanimir5F]

Hey yurka!

It seems you are using an outdated example (and maybe package).

If it isn't 3.0.0-alpha3 (at the moment this is the latest one) my recommendation is update the ESP32 package and then just run their default example from: File --> Examples --> Ethernet --> ETH_LAN8720
without any changes and it should work.

Code Select Expand

/*
    This sketch shows the Ethernet event usage

*/

// Important to be defined BEFORE including ETH.h for ETH.begin() to work.
// Example RMII LAN8720 (Olimex, etc.)
#define ETH_PHY_TYPE        ETH_PHY_LAN8720
#define ETH_PHY_ADDR         0
#define ETH_PHY_MDC         23
#define ETH_PHY_MDIO        18
#define ETH_PHY_POWER       -1
#define ETH_CLK_MODE        ETH_CLOCK_GPIO0_IN

#include <ETH.h>

static bool eth_connected = false;

// WARNING: WiFiEvent is called from a separate FreeRTOS task (thread)!
void WiFiEvent(WiFiEvent_t event)
{
  switch (event) {
    case ARDUINO_EVENT_ETH_START:
      Serial.println("ETH Started");
      // The hostname must be set after the interface is started, but needs
      // to be set before DHCP, so set it from the event handler thread.
      ETH.setHostname("esp32-ethernet");
      break;
    case ARDUINO_EVENT_ETH_CONNECTED:
      Serial.println("ETH Connected");
      break;
    case ARDUINO_EVENT_ETH_GOT_IP:
      Serial.println("ETH Got IP");
      ETH.printInfo(Serial);
      eth_connected = true;
      break;
    case ARDUINO_EVENT_ETH_LOST_IP:
      Serial.println("ETH Lost IP");
      eth_connected = false;
      break;
    case ARDUINO_EVENT_ETH_DISCONNECTED:
      Serial.println("ETH Disconnected");
      eth_connected = false;
      break;
    case ARDUINO_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);  // Will call WiFiEvent() from another thread.
  ETH.begin();
}

void loop()
{
  if (eth_connected) {
    testClient("google.com", 80);
  }
  delay(10000);
}

Stan, Olimex

[yurka]

Hey @Stanimi5F
Thank you very much champion!
I'm going to try it, and i'll post the solution to close the issue.

[yurka]

[SOLVED]
In my case just add "delay(2000)" I think it says it in the documentation !!!! My fault for not having read more carefully.