ESP32 devkit v1 WiFi.h and Ethernet.h can not be simultaneously compiled

[SergiiSenchurov]

Board

esp32 devkit v1

Device Description

ESP32 DEVKIT v1 with W5500 Ethernet shield connected over the SPI

Hardware Configuration

// static const uint8_t SS = 5;
// static const uint8_t MOSI = 19;
// static const uint8_t MISO = 21;
// static const uint8_t SCK = 18;

Version

v1.0.6

IDE Name

Visual Studio Code with Arduino IDE 1.8.6

Operating System

MacOS 12.0.1

Flash frequency

80MHz

PSRAM enabled

no

Upload speed

921600

Description

Simultaneous compilation of Ethernet.h and WiFi.h makes successfull compilation impossible due to the constructors syntax conflict

Workaround is

// 1. Modify "Server.h" file as follows
// class Server: public Print
// {
// public:
// // -- Remove
// // virtual void begin(uint16_t port=0) =0;
// // ++ Add
// virtual void begin() = 0;
// };
//
// 2. Modify "WiFiServer.h"
// // -- Remove void begin(uint16_t port=0);
// // ++ Add
// void begin(void);
// void begin(uint16_t port);
//
// 3. Modify "WiFiServer.cpp"
// // ++ Add
// void WiFiServer::begin(void){
// begin(0, 1);
// }
//

Sketch

void setup(){

  


  Ethernet.init(SS);
  module_state.DHCP_result = Ethernet.begin(ethernet_macaddress); // Dynamic IP setup
  module_state.hardware_status = Ethernet.hardwareStatus();


  if (Ethernet.linkStatus() == LinkON)
  {
    serverEthernet.begin();
  }


  WiFi.hostname(WIFI_HOSTNAME);
  WiFi.begin(ssid, pass);
  uint8_t delays_count = 0;
  while ((WiFi.status() != WL_CONNECTED) && (delays_count < MAX_WIFI_CONNECT_RETRIES))
  {
    delay(500);
    delays_count++;
  }

  serverWiFi.begin();
  serverWiFi.setNoDelay(true);

Debug Message

Debug impossible

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[atanisoft]

You can use the built-in Ethernet library via "ETH.h". The Ethernet.h file you are using is for AVR and is not guaranteed to work with ESP32.

This appears to also be a duplicate of #2704

[SergiiSenchurov]

Thank you!

[SergiiSenchurov]

The issue persists. I cannot find eth.h library

[atanisoft]

You don't need to "find" the library, it is built-in as part of the Arduino esp32 package you added to the Arduino IDE. You should be able to find a few examples of it's usage in the IDE under the ESP32 examples (look for Ethernet).

In your code you would swap #include <Ethernet.h> with #include <ETH.h> and use the ETH instance (similar to Serial) directly.

[VojtechBartoska]

Hello, can I consider this as covered?

[VojtechBartoska]

Hello, due to no answer I'm closing this issue as expired.

If you still need help, please reopen it.

Thanks for understanding!