Olimex ESP32-PoE Rev E上的以太网初始化错误

问题描述

当我尝试在Olimex ESP32-PoE上初始化并开始使用以太网时，遇到以下错误消息：

E (1039) emac: Timed out waiting for PHY register 0x2 to have value 0x0007(mask 0xffff). Current value 0x0000
E (2040) emac: Timed out waiting for PHY register 0x3 to have value 0xc0f0(mask 0xfff0). Current value 0x0000
E (2041) emac: Initialise PHY device Timeout
[E][ETH.cpp:101] begin(): esp_eth_enable error: -1

我使用的平台/框架/工具是：PlatformIO，Arduino框架，Visual Studio 代码编辑器。

代码段：

// Ethernet port parameters
// ETH_CLOCK_GPIO17_OUT - 50MHz clock from internal APLL inverted output on GPIO17 - tested with LAN8720.
#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
// Pin number of the enable signal for the external crystal oscillator (-1 to disable for internal APLL source).
#define ETH_POWER_PIN -1
// Type of the Ethernet PHY (LAN8720 or TLK110).
#define ETH_TYPE ETH_PHY_LAN8720
// I²C-address of Ethernet PHY (0 or 1 for LAN8720,31 for TLK110).
#define ETH_ADDR 0
// Pin number of the I²C clock signal for the Ethernet PHY.
#define ETH_MDC_PIN 23
// Pin number of the I²C IO signal for the Ethernet PHY.
#define ETH_Mdio_PIN 18

#include <Arduino.h>
#include <ETH.h>
#include <WiFi.h>

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 setup()
{
    Serial.begin(115200);
    Serial.println();
    Serial.println();
    Serial.println();
    
    // Set on connected event
    WiFi.onEvent(WiFiEvent);
    // Init Ethernet
    ETH.begin(ETH_ADDR,ETH_POWER_PIN,ETH_MDC_PIN,ETH_Mdio_PIN,ETH_TYPE,ETH_CLK_MODE);
    Serial.print("Waiting for Ethernet... ");
    // Wait for connected status
    while(!eth_connected) {
        Serial.print(".");
        delay(500);
    }
    Serial.println("Ethernet connected! ");
}

该板无法连接到Internet，并且LAN电缆已与其他板（例如“ Olimex ESP32-EVB”）进行了测试，并且可以正常工作，因此可能不是LAN电缆问题。任何人都可以帮助指出任何错误的部分吗？非常感谢。

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

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c++esp32 ethernet