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I am looking for a way to give my project both WLAN and LAN but because I need all the IO pins on an ESP32 (which may also be a bit too slow for my application) I can't just use a LAN module on the ESP.

My thought was to use the ESP as a WLAN receiver and a W5500 as LAN receiver and connect them both over SPI to an STM Blue Pill or some other microcontroller that is a bit stronger.

Now I would like to know if that is practical and doable or if you guys may have any other ideas.

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  • \$\begingroup\$ w5500 can give you ethernet and esp32 wireless fidelity(wi-fi). You can decide if it is doable now. \$\endgroup\$
    – emre iris
    Apr 4 at 18:46
  • \$\begingroup\$ which blue pill do you refer to? The usual stm32f103 is hardly stronger than one of the cores in an ESP32. ESP32 spi to the W5500 should achieve your goal. \$\endgroup\$
    – Kartman
    Apr 5 at 11:25
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ESP-Hosted might help with the WiFi Interface between the MCU and ESP32.

It uses SPI to transmit data between processors https://github.com/espressif/esp-hosted

Adafruit has a similar interface, but it uses 2 extra pins https://github.com/ladyada/Adafruit_CircuitPython_ESP32SPI

I'm sorry I can't help you with your hardware without a schematic, and even then my expertise is more in software. Please let me know if I can help in any way!

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