[MicroPython] REPL not responding on ESP8266 / ESP32
I met this issue before. I use Putty, when I changed "Flow Control" from "XON/XOFF" to "None" under Connection -> Serial setting Category, this issue is gone.
After checked with ESP8266 data sheet, ESP32 / ESP8266 chips do not support the "Flow Control", that is why I changed "Flow Control" from "XON/XOFF" to "None", the issue is gone.
Hope this information can help someone.
