Hi thanks for you reply.

I looked around and saw this resource about configuring the UART1 for At command/response ( https://docs.espressif.com/projects/esp-at/en/latest/esp32/Compile_and_Develop/tools_at_py.html#at-py-modify-uart ). I did try all of the steps and reflashed the updated binary.

I ...

Flash & Sending AT Firmware on Adafruit Huzzah32 - esp32-wroom-32e
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Use the Adafruit HUZZAH32 - ESP32 Feather as a wifi module. The main MCU is the 8051 ( AT89C51RD2 ) and the Huzzah32 is the board that provides wifi connectivity to the 8051. The ...