I have a question in my head how does a WIFI chip like ESP8266 communicate with any microcontroller. I downloaded datasheet https://www.espressif.com/sites/default/files/documentation/esp8266-technical_reference_en.pdf If I am not wrong its lt seems ESP8266 work on SPI protocol. This chip can support with any microcontroller that supports SPI

1. Micro at transmitter End
2. ESP8266 at transmitter End
3. ES8266 at receiver END
4. Micro at receiver End

Will both ESP8266 chip use WiFi protocol for communication but Micro and ESP8266 will exchange their data on SPI protocol?

 

I have a question in my head how does a WIFI chip like ESP8266 communicate with any microcontroller. I downloaded datasheet https://www.espressif.com/sites/default/files/documentation/esp8266-technical_reference_en.pdf If I am not wrong its lt seems ESP8266 work on SPI protocol. This chip can support with any microcontroller that supports SPI

1. Micro at transmitter End
2. ESP8266 at transmitter End
3. ES8266 at receiver END
4. Micro at receiver End

Will both ESP8266 chip use WiFi protocol for communication but Micro and ESP8266 will exchange their data on SPI protocol?

Yes.

 

Although an RS232 at logic levels is very common.