Compilation error: cannot declare variable 'server' to be of abstract type 'EthernetServer..

[yltsa]

Hi,

I try to compile

examples/Modules/Base_PoE/LAN_W5500/WebServer/WebServer.ino Arduino example.

There comes always this error:

Compilation error: cannot declare variable 'server' to be of abstract type 'EthernetServer'

The board is CoreS3,

[TinyuZhao]

Don't forget to provide your code.

[yltsa]

It is this code from M5Stack examples:

https://github.com/m5stack/M5Stack/blob/master/examples/Modules/Base_PoE/LAN_W5500/WebServer/WebServer.ino

[TinyuZhao]

This is the library file of the M5Core generation host(M5Fire, M5Basic, M5Gray), you are sure that this is the program that compiles the M5Core S3 host, and I tested the compilation without any problems.

[yltsa]

I have this error:

[TinyuZhao]

Can you provide all the logs?

[yltsa]

FQBN esp32esp32m5stack_cores3.txt

[lovyan03]

hello, @yltsa Perhaps you are mixing the following two? If you do, a conflict will occur and the compile will not work.

// #include <M5Stack.h>    // <- NO NEED THIS.
#include <M5CoreS3.h> // <- need for CoreS3

Also, the argument to the begin function will probably not be necessary.

//  M5.begin(true, false, true);  // <- NG
  M5.begin();                      // <- OK

[TinyuZhao]

As Lovyan said, and these pins don't work with the M5CoreS3 either, Only work for M5Fire, M5Basic, M5Gray