The ESP32 module comes preloaded with a ROM image with an AT command set, just like the ESP8266 did ... For your next program, you’ll just copy the demo application folder, get into main ...

While the ESP32 ... ESP8266 wranglers alike. An auto-reset circuit with the CH340C For example, [Ray] talks a bit about using the infamous GPIO10 pin. This pin is on the rear of the ESP8266 module ...