⏸️[FEATURE REQUEST]🦄<Please support Ethernet to spi modules similar to W5500>

[liu2-3zhi]

Is your feature request related to a problem? Please describe.

The ESP32-S3 chip does not have a built-in MAC and PHY interface, so it cannot support Ethernet functionality directly like the normal ESP32.

Describe the solution you'd like

Add support for external serial-to-ethernet chips such as W5500 and ENC28J60. This can be done by:

1. Implementing SPI driver for the ethernet chip.

2. Implementing high-level ethernet driver based on the SPI driver.

3. Integrating the driver into ESP-IDF TCP/IP stack.

This will allow ESP32-S3 to use Ethernet functionality by connecting external ethernet chips.

Describe alternatives you've considered

Using third-party Ethernet libraries like Ethernet.h or LwIP. But this requires porting work and won't be able to leverage ESP-IDF native network stack.

Additional context

Example code for W5500 ethernet chip support on ESP32-S3:

// ethconfig.h

#include "driver/spi_master.h"
#include "w5500_ethernet.h"

class EthConfig {

  spi_device_handle_t spi_handle;

  bool init_w5500_spi() {
    // Init W5500 SPI 
  }

  bool linkUp() {
    // Check W5500 registers 
  }

};

// ethconfig.cpp

bool EthConfig::init_w5500_spi() {
  // Init SPI
  // Add device
  // Config SPI device 
} 

bool EthConfig::linkUp() {
  
  // Transmit SPI transaction
  // Check link status bit

}

This allows integrating W5500 to ESP-IDF native network stack.

[luc-github]

The espressif idf seem already support ethernet on S3 for 1 year (IDF 4.4.2) per this project https://github.com/W00ng/ESP32-S3-Gateway
https://github.com/espressif/esp-idf/tree/master/examples/ethernet mention W5500 is supported

The idf code https://github.com/espressif/esp-idf/blob/master/examples/ethernet/enc28j60/README.md show enc28j60 being supported also

On arduino it may be already implemented - but because I do not have any S3 ethernet I did not tested neither see the issue of using current code

Once I will get one S3 device with W5500 - (I may order one https://github.com/W00ng/ESP32-S3-Gateway )I will have a look if there is a need to adapt ESP3D V3 code

[luc-github]

Per this PR SPI ethernet is on going and will be in esp32 arduino core V3.0 : espressif/arduino-esp32#8575 so should be in coming months

[liu2-3zhi]

Per this PR SPI ethernet is on going and will be in esp32 arduino core V3.0 : espressif/arduino-esp32#8575 so should be in coming months

It is finished now!

[luc-github]

but 3.0 is not released yet